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Monthly climate in Seaside, Oregon, United States

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Seaside features a warm-summer Mediterranean climate (Csb). Temperatures typically range between 7 °C (44 °F) and 16 °C (60 °F) through the year, but rarely can drop to -2 °C (30 °F) or can rise to as high as 25 °C (77 °F). The average annual precipitation amounts to about 1765 mm (69.5 inches) and receives 167 rainy days on the 1 mm (0.04 inches) threshold annually. Seaside enjoys an average of 2666 hours of sunshine throughout the year, and daylight varies from 8 hours 42 minutes to 15 hours 39 minutes per day.

Monthly average temperatures in Seaside, Oregon, United States §

The warmest months in Seaside are July, August and September, with daily mean temperatures ranging from 15 to 16 °C (59 - 60 °F) throughout the day. The coldest temperatures usually occur in January, February and March, when daily mean temperatures range from 7 to 8 °C (44 - 46 °F) throughout the day. On average each year, Seaside experiences 0 days above 25 °C (77.0 °F) and 0 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Seaside, Oregon, United States. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 13°C
(56°F)		 13°C
(55°F)		 18°C
(65°F)		 20°C
(67°F)		 21°C
(70°F)		 25°C
(77°F)		 21°C
(70°F)		 24°C
(76°F)		 24°C
(75°F)		 20°C
(67°F)		 15°C
(59°F)		 13°C
(56°F)
Mean maximum 12°C
(54°F)		 11°C
(53°F)		 13°C
(56°F)		 16°C
(61°F)		 18°C
(64°F)		 20°C
(68°F)		 19°C
(66°F)		 22°C
(71°F)		 21°C
(70°F)		 17°C
(63°F)		 14°C
(58°F)		 12°C
(54°F)
Average high 9°C
(49°F)		 8°C
(46°F)		 9°C
(49°F)		 11°C
(52°F)		 13°C
(55°F)		 15°C
(59°F)		 16°C
(61°F)		 17°C
(63°F)		 16°C
(62°F)		 14°C
(57°F)		 11°C
(53°F)		 9°C
(49°F)
Daily mean 8°C
(46°F)		 7°C
(44°F)		 8°C
(46°F)		 9°C
(49°F)		 12°C
(53°F)		 14°C
(57°F)		 15°C
(59°F)		 16°C
(60°F)		 15°C
(59°F)		 12°C
(54°F)		 10°C
(50°F)		 8°C
(46°F)
Average low 7°C
(44°F)		 5°C
(42°F)		 6°C
(44°F)		 8°C
(46°F)		 10°C
(51°F)		 12°C
(54°F)		 14°C
(57°F)		 14°C
(58°F)		 13°C
(56°F)		 11°C
(52°F)		 9°C
(48°F)		 6°C
(44°F)
Mean minimum 3°C
(37°F)		 1°C
(34°F)		 3°C
(37°F)		 5°C
(41°F)		 7°C
(46°F)		 10°C
(50°F)		 12°C
(54°F)		 12°C
(54°F)		 11°C
(51°F)		 7°C
(45°F)		 5°C
(42°F)		 2°C
(36°F)
Minimum -0°C
(32°F)		 -0°C
(32°F)		 1°C
(34°F)		 2°C
(36°F)		 6°C
(43°F)		 10°C
(49°F)		 11°C
(52°F)		 11°C
(53°F)		 10°C
(50°F)		 5°C
(41°F)		 3°C
(38°F)		 -2°C
(30°F)

Compare climate in Seaside with other places

Compare temperature, precipitation, sunshine, UV index in Seaside, Oregon, United States with other places around the world.

Monthly average precipitation in Seaside, Oregon, United States §

Seaside usually has the most precipitation in January, November and December, with an average of 19 rainy days and 261 mm (10.3 inches) of precipitation per month. The driest months in Seaside are June, July and August. On average, 34 mm (1.4 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Seaside, Oregon, United States. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 252 (9.9) 224 (8.8) 182 (7.2) 145 (5.7) 72 (2.8) 63 (2.5) 20 (0.8) 20 (0.8) 91 (3.6) 166 (6.5) 258 (10.2) 272 (10.7)
Average precipitation days (≥ 1 mm) 18 20 18 17 12 9 4 5 10 14 18 22

Monthly sunshine hours in Seaside, Oregon, United States §

The sunniest months in Seaside are June, July and August, when the sun shines an average of 10 hours 57 minutes a day. Least sunny months in Seaside: January, February and December receive an average of 3 hours 36 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Seaside, Oregon, United States. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 90 131 206 230 289 323 358 326 262 206 134 105
Mean daily daylight hours 9h 6m 10h 22m 11h 57m 13h 34m 14h 58m 15h 39m 15h 16m 14h 2m 12h 28m 10h 51m 9h 26m 8h 42m

Solar UV radiation in Seaside, Oregon, United States §

Seaside experiences the highest level of ultraviolet (UV) radiation in May, June and July, when the maximum UV index can reach values of 9 - 10, which corresponds to the Very High category of sun exposure. January, February and December are in the Low / Moderate exposure category. In these months, the maximum values of the UV index do not exceed 3. For more detailed information, check out our hourly Seaside UV Index data.

Average daily maximum UV levels by month for Seaside, Oregon, United States. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 2 3 5 6 9 10 9 8 7 5 3 2

Detailed Monthly Weather Insights for Seaside, Oregon, United States

Discover in-depth weather details for every month in Seaside. Click through the links below for comprehensive overviews of temperature trends, precipitation levels, sunshine hours, and solar UV radiation specifics. Whether planning a visit or simply curious about Seaside's climate nuances, these monthly breakdowns provide the information you need for an informed understanding of what to expect throughout the year.

Each link leads to a detailed account of the typical weather conditions for that month, providing both locals and tourists with vital information to plan their daily activities, wardrobe, and travel itineraries accordingly.