Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average sea temperature in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
December's arrival shows an average high-temperature of a still freezing cold 27°F (-2.8°C), hardly different from the previous month. Seward's evenings during December maintain an average temperature of 18.3°F (-7.6°C), aligning closely with the daytime temperatures.Humidity
March, April and December, with an average relative humidity of 87%, are the most humid months.Rainfall
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.Snowfall
Months with snowfall are January through May, October through December. In December, it is snowing for 12.9 days. Throughout December, 15.91" (404mm) of snow is accumulated. Throughout the year, there are 72 snowfall days, and 73.19" (1859mm) of snow is accumulated.Ocean temperature
In December, the average ocean temperature is 43.3°F (6.3°C).Note: Swimming at temperatures less than 50°F (10°C) in 43.3°F (6.3°C) is feasible with the right swimsuit; if not, expect cold shock and breathlessness. A quick swim at 55.4°F (13°C) without adequate warmth can be discomforting.
Daylight
The month with the shortest days is December, with an average of 6h and 0min of daylight.On the first day of the month, sunrise is at 9:35 am and sunset at 3:58 pm. On the last day of December, sunrise is at 10:00 am and sunset at 4:01 pm AKST.
Sunshine
January and December, with an average of 3.1h of sunshine, are months with the least sunshine.UV index
January, October through December, with an average maximum UV index of 1, are months with the lowest UV index in Seward. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: A maximum UV index of 1 in December translates into the following recommendations:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the most humid month?
What is the average humidity in December?
What is the rainiest month?
How much does it rain in December?
How many days does it snow in December?
How cold is the water in December?
What is the month with the shortest days?
What is the average length of the day in December?
What time are sunrise and sunset in December?
What are the months with the least sunshine?
How many hours of sunshine does Seward have in December?
What is the month with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Seward, AK
- Average high temperature in December: 27°F
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).
- Average low temperature in December: 18.3°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 in December
Seward, AK
- 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 in December
Seward, AK
- 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 in December
Seward, AK
- Average humidity in December: 87%
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 in December
Seward, AK
- 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 in December
Seward, AK
- 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 in December
Seward, AK
- Average snowfall in December: 15.91"
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 in December
Seward, AK
- 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 in December
Seward, AK
- Average sea temperature in December: 43.3°F
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 in December /
Average sunshine in December
Seward, AK
- 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 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 in December
Seward, AK
- 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 in December
Seward, AK
- Average UV index in December: 1
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 in December
Seward, AK
- Average cloud cover in December: 55
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 in December
Seward, AK
- Average visibility in December: 5mi
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
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