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Contents
- The climate of Astoria
- The best time to visit Astoria
- The worst time to visit Astoria
- Spring weather in Astoria
- Summer weather in Astoria
- Autumn weather in Astoria
- Winter weather in Astoria
- 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
A scenic seaside shot of the city of Astoria in Oregon, with a view of the iconic Astoria Megler bridge crossing over the Columbia river
The climate of Astoria
Astoria, Oregon, identified under Köppen climate classification as a 'Csb' zone, experiences a Mediterranean, warm summer climatic condition. On the northwest coast of Oregon, close to the mouth of the Columbia River, Astoria indeed exhibits a distinct annual climate pattern influenced by the surrounding Pacific Ocean.
There is a significant change in weather parameters throughout the year, manifesting in variations across temperature, atmospheric pressure, precipitation, cloud coverage, and wind speed. The temperatures range from an average high of 46°F (7.8°C) in January and February to a peak average high of 67.6°F (19.8°C) in August. The lowest temperatures are seen in the winter months from November to February.
Astoria has high levels of humidity that range from 81% in May to 84% in December, January, and November. Consistent with its location near the ocean, the city experiences significant rainfall throughout the year. The maximum appears in January with an average of 6.22in and decreases to a minimum of 0.51in in July. Snowfall is significantly less frequent compared to rain, with January and February seeing the most, .75in and .91in respectively. November and December witness traces of snow, while the summer season remains devoid of it.
There is a significant change in weather parameters throughout the year, manifesting in variations across temperature, atmospheric pressure, precipitation, cloud coverage, and wind speed. The temperatures range from an average high of 46°F (7.8°C) in January and February to a peak average high of 67.6°F (19.8°C) in August. The lowest temperatures are seen in the winter months from November to February.
Astoria has high levels of humidity that range from 81% in May to 84% in December, January, and November. Consistent with its location near the ocean, the city experiences significant rainfall throughout the year. The maximum appears in January with an average of 6.22in and decreases to a minimum of 0.51in in July. Snowfall is significantly less frequent compared to rain, with January and February seeing the most, .75in and .91in respectively. November and December witness traces of snow, while the summer season remains devoid of it.
The best time to visit Astoria
Astoria offers its best weather during the summer months, specifically from June to September. In these months, the average high temperatures hover around a comfortable 60s°F. The lowest rainfall is noted in these months, with July displaying the least at 0.51in. Moreover, this period yields more daylight hours, with an approximate 15 hours in June and July. This sunny, warm, and relatively dry period is ideal for outdoor explorations and local sightseeing, making the summer months the best time to visit Astoria.
The worst time to visit Astoria
The period from November to March affords less favorable conditions for visitors due to several reasons. The lower average temperatures, with the lowest being 39.2°F (4°C) in January, combined with a higher likelihood of rainfall, mark this time as the least desirable for visiting Astoria. Additionally, these months see reduced daylight hours, ranging from 8.7 to 10.4 hours, further limiting time for outdoor activities.
Spring weather in Astoria
During the spring months of March to May, Astoria experiences a gradual increase in temperature from an average high of 49.5°F (9.7°C) to 58.3°F (14.6°C). The amount of rainfall also decreases, from an average of 4.17in in March to 1.97in in May. This period records a relatively pleasant weather, with moderate temperatures and decreasing rains making it a comfortable time to visit.
Summer weather in Astoria
Summer in Astoria, from June through August, is characterized by the highest average temperatures, soaring up to 67.6°F (19.8°C) in August. Rainfall is considerably reduced during these months, making it the driest period of the year, culminating in a paltry 0.51in in July. The summer season is hence, the warmest and driest, boasting more daylight hours than any other season.
Autumn weather in Astoria
Autumn weather in Astoria, from September to November, witnesses a gradual drop in average temperatures from 64.6°F (18.1°C) in September to 50.5°F (10.3°C) in November. During this period, rainfall begins to increase, starting with an average of 1.81in in September, escalating to a significant 5.28in by November. While September offers a pleasant weather, October and November see a notable change with cooler temperatures and increased precipitation.
Winter weather in Astoria
Winter, stretching from December through February, is the coldest season in Astoria, with average high temperatures ranging from 45.1°F (7.3°C) to 46.8°F (8.2°C). This season is also characterized by the highest rainfall, with January seeing an average total of 6.22in. The combination of lowered temperatures, frequent rain, and shortened daylight hours, those being at their lowest at 8.7h in December, create a cool and damp winter period.
Weather in January
January presents a chilly kickoff to the year, with weather patterns characterized by consistent rainfall and overcast conditions. This trend carries over from December, making the distinction between these two months rather subtle in Astoria, Oregon. Weather in January »
Weather in February
February continues with the winter theme established by January in Astoria. The city pushes through the persistent rainfall and frosty temperatures as winter's grip begins to gradually loosen. Temperatures fluctuate between 38.8°F (3.8°C) and 46.8°F (8.2°C) degrees, making February only marginally warmer than the prior month. Weather in February »
Weather in March
March marks an often-overlooked turning point in Astoria’s calendar year, with this month serving as the city's gateway to spring. Compared to February, there is a slight increase in overall precipitation leading to more rainy days. Weather in March »
Weather in April
In April, Astoria undeniably steps into warmer weather, leaving the stubborn remnants of winter behind. The city witnesses a significant leap in temperatures, making a noticeable contrast to March. April's warmer temperatures range from 42.1°F (5.6°C) to 52.3°F (11.3°C). Weather in April »
Weather in May
May ushers in the beauty of spring in Astoria, creating a stark contrast to the city's more humid winter begetting a remarkable change in scenery. There's a significant rise in the average temperature, presenting sunnier and drier conditions than April. Weather in May »
Weather in June
June in Astoria is when summer really begins to make itself known. Warm, long days are increasingly common, while the cooler, rainier weather synonymous with winter becomes a memory. It's important to note that June's temperature spectrum spans from 48.9°F (9.4°C) to 61.9°F (16.6°C). Weather in June »
Weather in July
July signifies the zenith of the summer season in Astoria, characterized by longer daylight hours and elevated temperatures. As per the data, July's temperatures oscillate between a high of 66.6°F (19.2°C) and a low of 52.3°F (11.3°C), providing warm, sunny days and comfortably cool evenings. Weather in July »
Weather in August
August in Astoria continues the familiar patterns of summer with warm days, low chances of rain, and plenty of sun. With temperature peaks in July, August temperature scales down marginally, offering wonderful late summer conditions. Weather in August »
Weather in September
Astoria's weather in September marks the transition from the warm summer season to the cooler, wetter conditions of autumn. Foliage begins to change, landscapes adopt burnished hues, and a tangible shift in the city's ambience gains momentum. Weather in September »
Weather in October
Astoria's October weather brings about a significant metamorphosis, as summer's long, lively days give way to the more subdued ambiance of autumn. The city witnesses shorter days and increased rainfall, a stark departure from September's conditions. Weather in October »
Weather in November
November, the last month of the autumn in Astoria, is cool month, with an average temperature fluctuating between 43°F (6.1°C) and 50.5°F (10.3°C). With the onset of November, Astoria experiences a modest temperature adjustment, with the average high-temperature gently receding from a mild 57.6°F (14.2°C) in October to a cool 50.5°F (10.3°C). Weather in November »
Weather in December
December rolls in with the return of frosty temperatures, supplementing the characteristic charm of winter in Astoria. Signs of snowfall make their appearance, albeit quite minimally, adorning the cityscape with a dusting of wintry white. Weather in December »
Updated: Jun 4, 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 are the most humid months?
January through March, November and December, with an average relative humidity of 84%, are most humid months.
How much does it rain?
Throughout the year, there are 192.7 rainfall days, and 40.12" (1019mm) of precipitation is accumulated.
When does it snow?
Months with snowfall are January through March and December.
How many days does it snow?
Throughout the year, in Astoria, there are 3.4 snowfall days, and 1.93" (49mm) of snow is accumulated.
What are the months with the least sunshine?
January and February, with an average of 3.8h of sunshine, are months with the least sunshine.
When is the lowest UV index?
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
What is the snowiest month?
February is the month with the most snowfall. Snow falls for 1.4 days and accumulates 0.91" (23mm) of snow.
When is the ocean coldest in Astoria?
February is the month with the coldest seawater, with an average ocean temperature of 47.8°F (8.8°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 PST to PDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from PDT to PST.
When it does not snow?
April through November are months without snowfall.
What is the least humid month?
May is the least humid month, with an average relative humidity of 81%.
When are the longest days?
The month with the longest days is June, with an average of 15h and 42min of daylight.
What is the driest month?
The month with the least rainfall is July, when the rain falls for 8.1 days and typically collects 0.51" (13mm) of precipitation.
What month is the ocean warmest?
With an average ocean temperature of 56.8°F (13.8°C), July is the month with the warmest seawater.
What is the month with the highest UV index?
With an average maximum UV index of 5, July is the month with the highest UV index.
What time of the year is the hottest?
August, on average, is the warmest month, registering a high temperature of 67.6°F (19.8°C) and a low of 53.1°F (11.7°C).
What month has the most sunshine?
August has the most sunshine of the year, with an average of 9.9h of sunshine.
What is the coldest time of year in Astoria?
The coldest period tends to be December, when average temperatures fluctuate between a high of 45.1°F (7.3°C) and a low of 38.5°F (3.6°C).
What is the wettest month?
December is the month with the most rainfall. Rain falls for 21.2 days and accumulates 6.42" (163mm) of precipitation.
What is the month with the shortest days?
With an average of 8h and 42min of daylight, December has the shortest days of the year.
Average temperature
Astoria, OR
The warmest month (with the highest average high temperature) is August (67.6°F).
The month with the lowest average high temperature is December (45.1°F).
The month with the highest average low temperature is August (53.1°F).
The coldest month (with the lowest average low temperature) is December (38.5°F).
Average pressure
Astoria, OR
- Average pressure in January:
30.08"Hg - Average pressure in February:
30.06"Hg - Average pressure in March:
30.02"Hg - Average pressure in April:
30.07"Hg - Average pressure in May:
30.05"Hg - Average pressure in June:
30.06"Hg
- Average pressure in July:
30.07"Hg - Average pressure in August:
30.03"Hg - Average pressure in September:
30.02"Hg - Average pressure in October:
30.04"Hg - Average pressure in November:
30.03"Hg - Average pressure in December:
30.06"Hg
The month with the highest atmospheric pressure is January (30.08"Hg).
The months with the lowest atmospheric pressure are March and September (30.02"Hg).
Average wind speed
Astoria, OR
- Average wind speed in January:
9.1mph - Average wind speed in February:
8.2mph - Average wind speed in March:
8.5mph - Average wind speed in April:
7.5mph - Average wind speed in May:
6.5mph - Average wind speed in June:
6.2mph
- Average wind speed in July:
5.9mph - Average wind speed in August:
5.3mph - Average wind speed in September:
6mph - Average wind speed in October:
7.3mph - Average wind speed in November:
8.8mph - Average wind speed in December:
8.8mph
The windiest month (with the highest average wind speed) is January (9.1mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity
Astoria, OR
The months with the highest relative humidity are January, February, March, November and December (84%).
The month with the lowest relative humidity is May (81%).
Average rainfall
Astoria, OR
- Average rainfall in January:
6.22" - Average rainfall in February:
4.45" - Average rainfall in March:
4.17" - Average rainfall in April:
3.15" - Average rainfall in May:
1.97" - Average rainfall in June:
1.46"
- Average rainfall in July:
0.51" - Average rainfall in August:
0.55" - Average rainfall in September:
1.81" - Average rainfall in October:
4.13" - Average rainfall in November:
5.28" - Average rainfall in December:
6.42"
The wettest month (with the highest rainfall) is December (6.42").
The driest month (with the least rainfall) is July (0.51").
Average rainfall days
Astoria, OR
- Average rainfall days in January:
20.1 days - Average rainfall days in February:
19.1 days - Average rainfall days in March:
21 days - Average rainfall days in April:
20 days - Average rainfall days in May:
13.4 days - Average rainfall days in June:
13 days
- Average rainfall days in July:
8.1 days - Average rainfall days in August:
7.2 days - Average rainfall days in September:
12.4 days - Average rainfall days in October:
16.7 days - Average rainfall days in November:
20.5 days - Average rainfall days in December:
21.2 days
The month with the highest number of rainy days is December (21.2 days).
The month with the least rainy days is August (7.2 days).
Average snowfall
Astoria, OR
The month with the highest snowfall is February (0.91").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days
Astoria, OR
- Average snowfall days in January:
0.9 days - Average snowfall days in February:
1.4 days - Average snowfall days in March:
0.6 days - Average snowfall days in April:
0 days - Average snowfall days in May:
0 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:
0 days - Average snowfall days in November:
0.2 days - Average snowfall days in December:
0.3 days
The month with the highest number of snowfall days is February (1.4 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average sea temperature
Astoria, OR
The best month for swimming (with the highest average sea temperature) is July (56.9°F).
The coldest month (with the lowest average sea temperature) is February (47.7°F).
Average daylight / Average sunshine
Astoria, OR
- Average daylight in January:
9h and 1min - Average daylight in February:
10h and 2min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 4min - Average daylight in May:
15h and 0min - Average daylight in June:
15h and 4min
- Average daylight in July:
15h and 2min - Average daylight in August:
14h and 1min - Average daylight in September:
12h and 3min - Average daylight in October:
10h and 5min - Average daylight in November:
9h and 2min - Average daylight in December:
8h and 4min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in January:
3h and 5min - Average sunshine in February:
3h and 5min - Average sunshine in March:
5h and 2min - Average sunshine in April:
7h and 1min - Average sunshine in May:
8h and 2min - Average sunshine in June:
8h and 5min
- Average sunshine in July:
9h and 5min - Average sunshine in August:
9h and 5min - Average sunshine in September:
8h and 4min - Average sunshine in October:
5h and 1min - Average sunshine in November:
4h and 2min - Average sunshine in December:
4h and 1min
The month with the most sunshine is August (Average sunshine: 9h and 54min).
The months with the least sunshine are January and February (Average sunshine: 3h and 48min).
Average sunshine days
Astoria, OR
- Average sunshine days in January:
9.8 days - Average sunshine days in February:
7.5 days - Average sunshine days in March:
8 days - Average sunshine days in April:
8.2 days - Average sunshine days in May:
15.1 days - Average sunshine days in June:
14.3 days
- Average sunshine days in July:
19.3 days - Average sunshine days in August:
20.1 days - Average sunshine days in September:
15.3 days - Average sunshine days in October:
13.5 days - Average sunshine days in November:
8.2 days - Average sunshine days in December:
9.2 days
The month with the most sunshine days is August (20.1 days).
The month with the least sunshine days is February (7.5 days).
Average UV index
Astoria, OR
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Astoria, OR
The months with the most cloud cover are January and February (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility
Astoria, OR
The months with the highest visibility are January, February, March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are July, August and September (5mi).
Astoria, Oregon, USA
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