Climate and monthly weather forecastSeaside, OR
Climate and monthly weather forecast
The climate of Seaside
Seaside, Oregon, embraced by the North Pacific Ocean, bears the characteristics of a Mediterranean climate with warm summers, designated as Csb according to the Köppen climate classification. A cool coastal breeze adorns this climate year-round, bringing a soothing respite to the inhabitants. Average high temperatures range from 46.6°F (8.1°C) in December to a peak of 65.5°F (18.6°C) in August, while the minimum average temperatures vary from 40.5°F (4.7°C) in December to 55°F (12.8°C) in August.Throughout the year, precipitation occurs more frequently, with November to January marking the most rainfall, specifically from 5.28" (134mm) in November to 6.54" (166mm) in December. A greatly reduced amount from 0.47" (12mm) is observed in July and August, which serves as a respite during the summer months. The average humidity remains relatively constant year-round, with minor variations between 81% to 84%.
An intriguing aspect of Seaside's climate lies in its snowfall. Measurable quantities are quite rare and mostly observed during the months of January and March with 0.59" (15mm) and 0.16" (4mm) respectively. Sunlight hours range from a minimum of 8.7 hours in December to a maximum of 15.7 hours in June, providing ample opportunity for both indoor and outdoor activities.
The best time to visit Seaside
Considering various weather conditions, the best time to visit Seaside would be from June to August. These months offer comfortable conditions with the least amount of rainfall, peak temperatures around 65.5°F (18.6°C), and the longest daylight hours, peaking at 15.7 hours in June. Furthermore, it is the period with the most sun exposure, with sunshine hours ranging from 8.9 to 10 hours per day. Coupled with an average sea temperature around 57.2°F (14°C), it is the ideal time for outdoor activities and beach fun.The worst time to visit Seaside
The least favorable period to visit Seaside is from November to January. This period is marked by the highest levels of rainfall, ranging from 5.28" (134mm) in November to 6.54" (166mm) in December. With high humidity levels, averaging 82%, and the lowest daylight hours, from 8.7 hours to 9.5 hours, outdoor activities might be restricted during these months.Spring weather in Seaside
Spring in Seaside welcomes a moderate change in weather conditions from March to May. Average high temperatures rise gradually from 49.6°F (9.8°C) to 57.6°F (14.2°C), while the low temperatures increase from 42.4°F (5.8°C) to 47.5°F (8.6°C). Though daylight increases significantly from 12 hours to 15 hours, rainfall is still frequent but undergoes a steady decline from 4.06" (103mm) in March to 1.85" (47mm) in May.Summer weather in Seaside
Summer in Seaside from June to August sees the warmest temperatures of the year. Highs range from 60.6°F (15.9°C) in June to 65.5°F (18.6°C) in August, while lows range from 50.9°F (10.5°C) to 55°F (12.8°C). The rainfall is at its lowest from 1.5" (38mm) in June to 0.47" (12mm) in July and August. Long daylight hours of up to 15.7 hours in June and maximum sunshine exposure from 8.9 hours in June to 10 hours in August make this season favorable for seaside lovers.Autumn weather in Seaside
Autumn from September to November brings about a significant change in Seaside's climate. The average high temperatures drop from 63.5°F (17.5°C) to 51.4°F (10.8°C), while the average low temperatures decrease from 53.8°F (12.1°C) to 45.3°F (7.4°C). The rainfall undergoes an upward trend from 1.77" (45mm) to a high of 5.28" (134mm) in November. Shorter days prevail, with daylight hours dropping from 12.5 hours in September to 9.5 hours in November.Winter weather in Seaside
Winter, from December to February, is the coolest season in Seaside. The average high temperatures range from 47.8°F (8.8°C) in January to 46.6°F (8.1°C) in December, whereas the average low temperatures decrease from 41.2°F (5.1°C) in January to 40.5°F (4.7°C) in December. The rainfall levels peak during this season, reaching 6.54" (166mm) in December. Although the daylight hours are at their shortest, ranging from 8.7 hours to 10.4 hours, the sight of winter landscapes may charm the winter enthusiasts.Weather in January
In Seaside, Oregon, January is marked by a notable high: an average rainfall of 6.26" (159mm) is observed, situated between December's 6.54" (166mm) and February's 4.41" (112mm). The month carries a distinct winter ambiance, with gloomy skies prevailing, shrouding the city in frequent, dense cloud cover. Weather in January »Weather in February
The transition from January to February in Seaside, Oregon, is marked by a comforting reduction in rainfall, subtly preluding the arrival of spring. A tenacious winter remains, but temperatures rise slightly, and the city begins to rebound from the wet chills of January. Weather in February »Weather in March
In March, Seaside, Oregon, witnesses a rise in daylight hours from 10.4 to 12, a delightful sign of the approaching spring. Total rainfall decreases and temperatures mildly ascend towards a more welcoming scale. The landscape renews itself, shaking off the winter frost and sprouting fresh foliage. Weather in March »Weather in April
With the onslaught of April, Seaside, Oregon, sees an impressive rise in daily sunshine hours from 5.6 hours to 7.4 hours. The skies clear up as cloud cover recedes, bestowing more sunlight upon the city. Weather remains consistent, with no snowfall in sight and reduced rainfall levels. Weather in April »Weather in May
The weather in Seaside, Oregon, witnesses considerable changes as May rolls in, still showing a progressive daylight increment to 15 hours. Mild weather is the prime theme, characterized by mild temperatures and a slight increase in relative humidity. Weather in May »Weather in June
June serves as the harbinger of Summer in Seaside, Oregon, and comes with a remarkable 8.9 hours of daily sunshine, a close second to July's highest 9.8 hours. The increase in temperature correlates with an escalation in sea temperatures, welcoming beach-goers along its shores. Weather in June »Weather in July
July in Seaside, Oregon, is a demonstration of the city's warmest weather, staging an average high temperature of 64.2°F (17.9°C). The advent of summer is made apparent by the cloudless azure skies, ensuing dry spells, and peak durations of daylight. Weather in July »Weather in August
During August, Seaside, Oregon reaches the apex of its summer climate, characterized by the year's zenith of average high temperature at 65.5°F (18.6°C). The weather balances heat and light, enabling outdoor activities under the most conducive conditions. Weather in August »Weather in September
September makes its appearance in Seaside, Oregon, with a significant drop in temperature from 65.5°F (18.6°C) to 63.5°F (17.5°C). The conclusion of the summer season is indicated by shorter days and slightly cooler evenings. Weather in September »Weather in October
In October, Seaside, Oregon, experiences a noticeable escalation in rainfall from 1.77" (45mm) to 4.17" (106mm). The weather in October brings with it the sweet melancholy of autumn, painting the city with hues of gold and brown. Weather in October »Weather in November
A return to a wetter climate marks the arrival of November in Seaside, Oregon, with rainfall levels peaking to 5.28" (134mm). Variances in temperature become more prominent, favoring cooler averages. The onset of winter is sensed by the city, with a decrease in sunshine hours and an increase in cloud cover. Weather in November »Weather in December
December in Seaside, Oregon, bears witness to the return of snowfall with 0.04" (1mm), albeit sparingly, indicating the commencement of winter. Sunshine hours drop lowest in the year, offering limited warmth during the day. The landscape transforms with stark trees and frost-kissed plains, portraying a picture of winter wonderland in parts. 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
January, March through May, October and December, with an average relative humidity of 81%, are the least humid months.
Throughout the year, there are 185.6 rainfall days, and 39.8" (1011mm) of precipitation is accumulated.
Months with snowfall are January through March and December.
In Seaside, during the entire year, snow falls for 2.8 days and aggregates up to 1.3" (33mm) of snow.
January and February, with an average of 3.9h of sunshine, are months with the least sunshine.
The month with the most snowfall is February, when snow falls for 1.3 days and typically aggregates up to 0.59" (15mm) of snow.
February is the month with the coldest seawater, with an average ocean temperature of 48.2°F (9°C).
February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
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.
In Seaside, snow does not fall in April through November.
The months with the highest UV index are May through September, with an average maximum UV index of 4.
The month with the longest days is June, with an average of 15h and 42min of daylight.
July and August are months with the least rain in Seaside when the rain falls for 7.3 days and typically aggregates up to 0.47" (12mm) of rain.
The month with the warmest seawater is July, with an average ocean temperature of 57.2°F (14°C).
In Seaside, temperatures reach their average annual highs in August, measuring 65.5°F (18.6°C) and a minimum average of 55°F (12.8°C).
The most humid month is August, with an average relative humidity of 84%.
With an average of 10h of sunshine, August has the most sunshine of the year.
December stands out as Seaside's coldest month, with an average high-temperature of 46.6°F (8.1°C) and a low-temperature of 40.5°F (4.7°C).
December is the month with the most rainfall. Rain falls for 20.7 days and accumulates 6.54" (166mm) of precipitation.
The month with the shortest days is December, with an average of 8h and 42min of daylight.
Average temperature
Seaside, OR
The warmest month (with the highest average high temperature) is August (65.5°F).
The month with the lowest average high temperature is December (46.6°F).
The month with the highest average low temperature is August (55°F).
The coldest month (with the lowest average low temperature) is December (40.5°F).
Average pressure
Seaside, 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:
30.06"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
Seaside, OR
- Average wind speed in January:
10.9mph - Average wind speed in February:
9.8mph - Average wind speed in March:
10.1mph - Average wind speed in April:
8.9mph - Average wind speed in May:
7.7mph - Average wind speed in June:
7.3mph
- Average wind speed in July:
7mph - Average wind speed in August:
6.3mph - Average wind speed in September:
7.2mph - Average wind speed in October:
8.8mph - Average wind speed in November:
10.6mph - Average wind speed in December:
10.5mph
The windiest month (with the highest average wind speed) is January (10.9mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity
Seaside, OR
The month with the highest relative humidity is August (84%).
The months with the lowest relative humidity are January, March, April, May, October and December (81%).
Average rainfall
Seaside, OR
- Average rainfall in January:
6.26" - Average rainfall in February:
4.41" - Average rainfall in March:
4.06" - Average rainfall in April:
3.03" - Average rainfall in May:
1.85" - Average rainfall in June:
1.5"
- Average rainfall in July:
0.47" - Average rainfall in August:
0.47" - Average rainfall in September:
1.77" - Average rainfall in October:
4.17" - Average rainfall in November:
5.28" - Average rainfall in December:
6.54"
The wettest month (with the highest rainfall) is December (6.54").
The driest months (with the least rainfall) are July and August (0.47").
Average rainfall days
Seaside, OR
- Average rainfall days in January:
19.4 days - Average rainfall days in February:
18.7 days - Average rainfall days in March:
20.8 days - Average rainfall days in April:
19 days - Average rainfall days in May:
12.8 days - Average rainfall days in June:
12.4 days
- Average rainfall days in July:
7.3 days - Average rainfall days in August:
7.3 days - Average rainfall days in September:
11 days - Average rainfall days in October:
16.1 days - Average rainfall days in November:
20.1 days - Average rainfall days in December:
20.7 days
The month with the highest number of rainy days is March (20.8 days).
The months with the least rainy days are July and August (7.3 days).
Average snowfall
Seaside, OR
The month with the highest snowfall is February (0.59").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days
Seaside, OR
- Average snowfall days in January:
0.5 days - Average snowfall days in February:
1.3 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:
0.1 days - Average snowfall days in December:
0.3 days
The month with the highest number of snowfall days is February (1.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average sea temperature
Seaside, OR
The best month for swimming (with the highest average sea temperature) is July (57.2°F).
The coldest month (with the lowest average sea temperature) is February (48.1°F).
Average daylight / Average sunshine
Seaside, OR
- Average daylight in January:
9h and 6min - Average daylight in February:
10h and 24min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 36min - Average daylight in May:
15h and 0min - Average daylight in June:
15h and 42min
- Average daylight in July:
15h and 18min - Average daylight in August:
14h and 6min - Average daylight in September:
12h and 30min - Average daylight in October:
10h and 54min - Average daylight in November:
9h and 30min - Average daylight in December:
8h and 42min
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 54min - Average sunshine in February:
3h and 54min - Average sunshine in March:
5h and 36min - Average sunshine in April:
7h and 24min - Average sunshine in May:
8h and 18min - Average sunshine in June:
8h and 54min
- Average sunshine in July:
9h and 48min - Average sunshine in August:
10h and 0min - Average sunshine in September:
8h and 48min - Average sunshine in October:
5h and 12min - Average sunshine in November:
4h and 24min - Average sunshine in December:
4h and 12min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The months with the least sunshine are January and February (Average sunshine: 3h and 54min).
Average sunshine days
Seaside, OR
- Average sunshine days in January:
10.3 days - Average sunshine days in February:
7.5 days - Average sunshine days in March:
8.3 days - Average sunshine days in April:
9.1 days - Average sunshine days in May:
15.4 days - Average sunshine days in June:
14.4 days
- Average sunshine days in July:
20.2 days - Average sunshine days in August:
21.2 days - Average sunshine days in September:
17 days - Average sunshine days in October:
13.5 days - Average sunshine days in November:
8.3 days - Average sunshine days in December:
8.8 days
The month with the most sunshine days is August (21.2 days).
The month with the least sunshine days is February (7.5 days).
Average UV index
Seaside, OR
The months with the highest UV index are May, June, July, August and September (UV index 4).
The months with the lowest UV index are February, November and December (UV index 2).
Average cloud cover
Seaside, OR
The months with the most cloud cover are January and February (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility
Seaside, OR
The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).
