Expand
Contents
- The climate of Seward
- The best time to visit Seward
- The worst time to visit Seward
- Spring weather in Seward
- Summer weather in Seward
- Autumn weather in Seward
- Winter weather in Seward
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average sea temperature
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
The busy Small Boat Harbor in Seward City, Alaska
The climate of Seward
Seward, Alaska, operates within a Köppen climate classification of Dfc, indicating a subarctic climate with severely freezing winters and no dry season. Located on the southern coast of Alaska, this temperate region registers annual fluctuations in weather conditions. Within this climatic zone, a notable absence of excessive heat prevails, yet the region finds itself prone to substantial snowfall during the colder part of the year.
Consideration reveals yearly average temperatures fluctuating from a chilling 17.1°F (-8.3°C) in January to a moderate 56.8°F (13.8°C) in July. Weather throughout the year witnesses significant variances, with higher temperatures from May to September, while colder weather prevails from October through to April. Reiterating, the area's highest temperature generally peaks in July at around 56.8°F (13.8°C). Simultaneously, the coldest months are December and January, temperatures averaging between 17.1°F (-8.3°C) and 18.3°F (-7.6°C).
A consistent pattern of rainfall is observable throughout the year, with rainfall inches ranging from 2.09" (53mm) in June to a substantial 7.64" (194mm) in December. Furthermore, monthly snowfall exhibits a noticeable ascent from November to February, December being the height of snowfall with 15.91" (404mm). Average daylight hours present a vast range from 6 hours in December to an impressive 18.8 hours in June, portraying significant variations during the year.
Consideration reveals yearly average temperatures fluctuating from a chilling 17.1°F (-8.3°C) in January to a moderate 56.8°F (13.8°C) in July. Weather throughout the year witnesses significant variances, with higher temperatures from May to September, while colder weather prevails from October through to April. Reiterating, the area's highest temperature generally peaks in July at around 56.8°F (13.8°C). Simultaneously, the coldest months are December and January, temperatures averaging between 17.1°F (-8.3°C) and 18.3°F (-7.6°C).
A consistent pattern of rainfall is observable throughout the year, with rainfall inches ranging from 2.09" (53mm) in June to a substantial 7.64" (194mm) in December. Furthermore, monthly snowfall exhibits a noticeable ascent from November to February, December being the height of snowfall with 15.91" (404mm). Average daylight hours present a vast range from 6 hours in December to an impressive 18.8 hours in June, portraying significant variations during the year.
The best time to visit Seward
Optimum visiting times for Seward, Alaska, center around the summer months of June through August. During this period, temperatures average between 44.2°F (6.8°C) to 56.8°F (13.8°C), providing hospitable weather for outdoor activities and sightseeing. Furthermore, these months also offer the highest amount of daylight hours, peaking at 18.8 hours in June. This allows ample time for explorations and excursions amidst extended hours of sunlight. Nevertheless, potential visitors should note the relatively high rainfall during these months, particularly in August with an average precipitation of 3.94" (100mm).
The worst time to visit Seward
The least advantageous period for a visit to Seward culminates in the winter months of November through March. Intense cold weather with an average low temperature below freezing at 17.1°F (-8.3°C) to 25.2°F (-3.8°C) is prevalent, and daylight is significantly reduced, hitting a low of 6 hours in December. Additionally, steady snowfall ensues, escalating to a monthly average high of 15.91" (404mm) in December, making road travel challenging. Summatively, these conditions pose requisite preparations for potential tourists to keep safety paramount and enjoyment feasible.
Spring weather in Seward
Seward's springtime, from March through May, introduces a gradual warming trend after the harsh winter. March begins with temperature lows at 25.2°F (-3.8°C), steadily rising to 35.4°F (1.9°C) by May. Concurrently, the high temperature follows a similar pattern and elevates from 29.8°F (-1.2°C) in March to 44.2°F (6.8°C) in May. Noticeably, the daylight hours increase considerably from 11.9 hours to a substantial 17.3 hours during this period. On the other hand, expected rainfall will be around 3.62" (92mm) in April to 3.82" (97mm) in May, and snowfall drops significantly to 0.47" (12mm) in May.
Summer weather in Seward
Summertime in Seward, spanning from June to August, promises the warmest months of the year with temperature highs ranging from 52°F (11.1°C) in June to 56.8°F (13.8°C) in July. Simultaneously, the low temperature registers a comfortable bracket between 43.3°F (6.3°C) to 47.8°F (8.8°C). High daylight hours compliment this season, peaking at 18.8 hours in June, reducing slightly to 17.9 hours in August. Predominantly, summer has the lowest rainfall of 2.09" (53mm) in June albeit a rise to 3.94" (100mm) in August.
Autumn weather in Seward
Autumn in Seward, from September to November, brings a noticeable drop in temperatures. High temperatures decrease from 48.7°F (9.3°C) in September to a chilling 29.7°F (-1.3°C) in November. Correspondingly, low temperatures follow the trend, ranging from 41.9°F (5.5°C) down to 22.8°F (-5.1°C). Rainfall gradually intensifies, starting at 5.75" (146mm) in September and escalating up to 5.63" (143mm) in November, coinciding with the start of the snowfall season. Sequentially, daylight hours progressively reduce from 12.8 hours in September to 7.5 hours in November.
Winter weather in Seward
Winter engulfs Seward from December through February, showcasing the coldest and harshest weather conditions of the year. During this period, high temperatures tumble to an average of 27°F (-2.8°C) in December and 24.6°F (-4.1°C) in February. Lows follow suit from 18.3°F (-7.6°C) in December to a chilling 17.1°F (-8.3°C) in January. In unison with the cold, daylight hours shrink to a mere 6 hours in December. However, this time witnesses the maximum snowfall of the year of up to 15.91" (404mm) in December, providing ideal conditions for winter sports enthusiasts.
Weather in January
The chill of winter is in full swing in Seward, Alaska as January unfolds. Compared to the slightly milder December, January experiences a peak in snowfall with a considerable 9.76" (248mm). A common sight would be the pristine white snow adding splendour to Seward's landscape. Weather in January »
Weather in February
As the calendar turns to February, the weather undergoes minor deviations from that of January. There is a slight increase in snowfall, reaching an annual high of 18.35" (466mm) presenting Seward in the prettiest of winter whites. Weather in February »
Weather in March
March heralds the transition period from Winter to Spring. From the snow-heavy months of January and February, snowfall dips to 15.04" (382mm) in March in Seward. Despite the early signs of an imminent spring, the temperatures still lean towards the colder side. Weather in March »
Weather in April
Unlike the snow-laden March, April witnesses a dramatic plunge in snowfall, signifying the departure of winter in Seward, Alaska. The precipitation turns to rain, with an average of 3.62" (92mm). With the advent of spring, the overall weather pattern becomes more pleasant. Weather in April »
Weather in May
May is predominantly the onset of the summer season for Seward. The most notable characteristic is the considerable increase in temperature, up to a high of 44.2°F (6.8°C) compared to the preceding months. The skies clear out substantially, affording more daylight hours for both residents and tourists alike. Weather in May »
Weather in June
Summer, by Alaskan standards, is in full bloom in Seward in June. Temperatures touch an agreeable 52°F (11.1°C), making daily activities more enjoyable. Humidity levels drop to the year’s lowest, offering residents a comfortable respite from the bone-drenching dampness of spring. Weather in June »
Weather in July
July is essentially the peak of summer in Seward, as temperatures escalate to an annual high of 56.8°F (13.8°C). Along with the heightened temperature, the sea temperature also peaks at 55.8°F (13.2°C), inviting a host of water sports activities. Weather in July »
Weather in August
The weather in August starts hinting at the impending departure of summer. A noticeable dip in temperature down to 55.6°F (13.1°C) from the July peak, signals the commencement of autumn’s preamble. This gentle cool off coupled with a heightened rainfall of 3.94" (100mm) gives Seward a new refreshingly cool look. Weather in August »
Weather in September
September marks the beginning of fall in Seward with the arrival of some striking changes in weather characteristics. Temperatures start descending with average highs plummeting to 48.7°F (9.3°C). However, rainfall reaches an annual high at 5.75" (146mm), paving the way for lush landscapes and a flourishing local ecosystem. Weather in September »
Weather in October
October embraces autumn wholeheartedly in Seward, Alaska. An evident decrease in average temperature down to a high of 39.9°F (4.4°C) underlines the transition from September. The rainfall prevails generously pouring 7.56" (192mm) in October laying the foundation for a vibrant, autumnal transformation of Seward. Weather in October »
Weather in November
As winter looms, the weather in November turns significantly colder in Seward, with highs not surpassing the 29.7°F (-1.3°C) mark. Snowfall makes a comeback after a prolonged hiatus, dusting the city with a moderate 4.84" (123mm). Weather in November »
Weather in December
December marks the official start of winter in Seward, Alaska. With the temperature hovering around a high of 27°F (-2.8°C), it ushers in the coldest phase of the year. The resurge in snowfall with a considerable 15.91" (404mm) is a clear indication of changing climatic conditions. Weather in December »
Updated: Aug 17, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest?
With an average high-temperature of 24.6°F (-4.1°C) and an average low-temperature of 17.1°F (-8.3°C), January is the coldest month.
How many days does it rain?
In Seward, Alaska, during the entire year, the rain falls for 166.9 days and collects up to 56.06" (1424mm) of precipitation.
When does it snow?
Months with snowfall are January through May, October through December.
How much does it snow?
Throughout the year, there are 72 snowfall days, and 73.19" (1859mm) of snow is accumulated.
What are the months with the least sunshine?
The months with the least sunshine are January and December, with an average of 3.1h of sunshine.
When is the lowest UV index?
January, October through December, with an average maximum UV index of 1, are months with the lowest UV index.
When does it snow the most?
The month with the most snowfall is February, when snow falls for 13.3 days and typically aggregates up to 18.35" (466mm) of snow.
What are the most humid months?
The months with the highest humidity are March, April and December, with an average relative humidity of 87%.
What month is the ocean coldest?
The month with the coldest seawater in Seward is March, with an average ocean temperature of 39°F (3.9°C).
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from AKST to AKDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from AKDT to AKST.
What is the least humid month?
The least humid month is June, with an average relative humidity of 80%.
What is the driest month?
The month with the least rainfall is June, when the rain falls for 15.8 days and typically collects 2.09" (53mm) of precipitation.
When it does not snow in Seward?
In Seward, snow does not fall in June through September.
When are the longest days?
The month with the longest days is June, with an average of 18h and 48min of daylight.
What month has the most sunshine?
The month with the most sunshine is June, with an average of 9.5h of sunshine.
What are the warmest months?
July registers as the month with the average highest temperatures, reaching 56.8°F (13.8°C) at its peak and 47.8°F (8.8°C) at the lowest.
When is the highest UV index?
July is the month with the highest UV index, with an average maximum UV index of 4.
What month is the ocean warmest in Seward?
With an average ocean temperature of 55.9°F (13.3°C), August is the month with the warmest seawater in Seward.
What is the rainiest month?
The month with the most rainfall is December, when the rain falls for 11.9 days and typically aggregates up to 7.64" (194mm) of precipitation.
What is the month with the shortest days?
With an average of 6h and 0min of daylight, December has the shortest days of the year.
Average temperature
Seward, AK
The warmest month (with the highest average high temperature) is July (56.8°F).
The month with the lowest average high temperature is January (24.6°F).
The month with the highest average low temperature is July (47.8°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).
Average pressure
Seward, AK
- Average pressure in January:
29.65"Hg - Average pressure in February:
29.78"Hg - Average pressure in March:
29.72"Hg - Average pressure in April:
29.8"Hg - Average pressure in May:
29.93"Hg - Average pressure in June:
29.92"Hg
- Average pressure in July:
29.98"Hg - Average pressure in August:
29.86"Hg - Average pressure in September:
29.73"Hg - Average pressure in October:
29.67"Hg - Average pressure in November:
29.61"Hg - Average pressure in December:
29.62"Hg
The month with the highest atmospheric pressure is July (29.98"Hg).
The month with the lowest atmospheric pressure is November (29.61"Hg).
Average wind speed
Seward, AK
- Average wind speed in January:
8.5mph - Average wind speed in February:
8mph - Average wind speed in March:
7.1mph - Average wind speed in April:
5.9mph - Average wind speed in May:
5.4mph - Average wind speed in June:
4.8mph
- Average wind speed in July:
4.9mph - Average wind speed in August:
5.5mph - Average wind speed in September:
6.5mph - Average wind speed in October:
7mph - Average wind speed in November:
8.9mph - Average wind speed in December:
8.4mph
The windiest month (with the highest average wind speed) is November (8.9mph).
The calmest month (with the lowest average wind speed) is June (4.8mph).
Average humidity
Seward, AK
The months with the highest relative humidity are March, April and December (87%).
The month with the lowest relative humidity is June (80%).
Average rainfall
Seward, AK
- Average rainfall in January:
4.49" - Average rainfall in February:
3.98" - Average rainfall in March:
4.25" - Average rainfall in April:
3.62" - Average rainfall in May:
3.82" - Average rainfall in June:
2.09"
- Average rainfall in July:
3.31" - Average rainfall in August:
3.94" - Average rainfall in September:
5.75" - Average rainfall in October:
7.56" - Average rainfall in November:
5.63" - Average rainfall in December:
7.64"
The wettest month (with the highest rainfall) is December (7.64").
The driest month (with the least rainfall) is June (2.09").
Average rainfall days
Seward, AK
- Average rainfall days in January:
10.9 days - Average rainfall days in February:
7.6 days - Average rainfall days in March:
9.2 days - Average rainfall days in April:
13.8 days - Average rainfall days in May:
16 days - Average rainfall days in June:
15.8 days
- Average rainfall days in July:
15.7 days - Average rainfall days in August:
19 days - Average rainfall days in September:
17.6 days - Average rainfall days in October:
17.2 days - Average rainfall days in November:
12.2 days - Average rainfall days in December:
11.9 days
The month with the highest number of rainy days is August (19 days).
The month with the least rainy days is February (7.6 days).
Average snowfall
Seward, AK
- Average snowfall in January:
9.76" - Average snowfall in February:
18.35" - Average snowfall in March:
15.04" - Average snowfall in April:
8.39" - Average snowfall in May:
0.47" - Average snowfall in June:
0"
The month with the highest snowfall is February (18.35").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Seward, AK
- Average snowfall days in January:
11.1 days - Average snowfall days in February:
13.3 days - Average snowfall days in March:
14.3 days - Average snowfall days in April:
9.8 days - Average snowfall days in May:
0.8 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
1.2 days - Average snowfall days in November:
8.6 days - Average snowfall days in December:
12.9 days
The month with the highest number of snowfall days is March (14.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature
Seward, AK
The best month for swimming (with the highest average sea temperature) is August (56°F).
The coldest month (with the lowest average sea temperature) is March (39°F).
Average daylight / Average sunshine
Seward, AK
- Average daylight in January:
6h and 5min - Average daylight in February:
9h and 1min - Average daylight in March:
11h and 5min - Average daylight in April:
14h and 4min - Average daylight in May:
17h and 2min - Average daylight in June:
18h and 5min
- Average daylight in July:
17h and 5min - Average daylight in August:
15h and 3min - Average daylight in September:
12h and 5min - Average daylight in October:
10h and 1min - Average daylight in November:
7h and 3min - Average daylight in December:
6h and 0min
The month with the longest days is June (Average daylight: 18h and 48min).
The month with the shortest days is December (Average daylight: 6h and 0min).
- Average sunshine in January:
3h and 1min - Average sunshine in February:
4h and 3min - Average sunshine in March:
6h and 1min - Average sunshine in April:
6h and 5min - Average sunshine in May:
8h and 4min - Average sunshine in June:
9h and 3min
- Average sunshine in July:
9h and 2min - Average sunshine in August:
8h and 1min - Average sunshine in September:
6h and 1min - Average sunshine in October:
5h and 1min - Average sunshine in November:
4h and 0min - Average sunshine in December:
3h and 1min
The month with the most sunshine is June (Average sunshine: 9h and 30min).
The months with the least sunshine are January and December (Average sunshine: 3h and 6min).
Average sunshine days
Seward, AK
- Average sunshine days in January:
13.8 days - Average sunshine days in February:
11.3 days - Average sunshine days in March:
12.9 days - Average sunshine days in April:
11 days - Average sunshine days in May:
11.9 days - Average sunshine days in June:
12.3 days
- Average sunshine days in July:
13.7 days - Average sunshine days in August:
11.2 days - Average sunshine days in September:
10.6 days - Average sunshine days in October:
11.9 days - Average sunshine days in November:
11.8 days - Average sunshine days in December:
11 days
The month with the most sunshine days is January (13.8 days).
The month with the least sunshine days is September (10.6 days).
Average UV index
Seward, AK
The month with the highest UV index is July (UV index 4).
The months with the lowest UV index are January, October, November and December (UV index 1).
Average cloud cover
Seward, AK
The month with the most cloud cover is December (Cloud cover 55).
The months with the least cloud cover are March and November (Cloud cover 50).
Average visibility
Seward, AK
The months with the highest visibility are June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March, April, May and December (5mi).
Seward, Alaska, USA
Weather forecast for your location
1. Click Locate me button
2. Allow the app to use your location
2. Allow the app to use your location