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Monthly climate in Seaside, California, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Seaside features a warm-summer Mediterranean climate (Csb).Temperatures typically range between 10 °C (50 °F) and 17 °C (63 °F) through the year, but rarely can drop to 0 °C (32 °F) or can rise to as high as 34 °C (93 °F).The average annual precipitation amounts to about 533 mm (21.0 inches) and receives 51 rainy days on the 1 mm (0.04 inches) threshold annually.Seaside enjoys an average of 3476 hours of sunshine throughout the year, and daylight varies from 9 hours 41 minutes to 14 hours 36 minutes per day.

Monthly average temperatures in Seaside, California, United States §

The warmest months in Seaside are July, August and September, with daily mean temperatures ranging from 16 to 17 °C (61 - 63 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 10 to 10 °C (50 - 51 °F) throughout the day. On average each year, Seaside experiences 10 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, California, 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 21°C
(70°F)		 23°C
(73°F)		 23°C
(73°F)		 26°C
(79°F)		 25°C
(78°F)		 29°C
(84°F)		 26°C
(79°F)		 30°C
(87°F)		 34°C
(93°F)		 31°C
(88°F)		 24°C
(76°F)		 24°C
(75°F)
Mean maximum 19°C
(66°F)		 20°C
(67°F)		 20°C
(69°F)		 22°C
(72°F)		 22°C
(73°F)		 25°C
(78°F)		 25°C
(77°F)		 27°C
(80°F)		 29°C
(84°F)		 27°C
(81°F)		 23°C
(73°F)		 20°C
(68°F)
Average high 14°C
(57°F)		 14°C
(58°F)		 14°C
(58°F)		 16°C
(60°F)		 17°C
(62°F)		 19°C
(67°F)		 21°C
(70°F)		 22°C
(71°F)		 21°C
(71°F)		 20°C
(69°F)		 17°C
(63°F)		 14°C
(58°F)
Daily mean 10°C
(51°F)		 10°C
(50°F)		 10°C
(51°F)		 12°C
(53°F)		 13°C
(55°F)		 15°C
(59°F)		 16°C
(61°F)		 17°C
(63°F)		 17°C
(62°F)		 15°C
(59°F)		 12°C
(55°F)		 10°C
(51°F)
Average low 7°C
(45°F)		 6°C
(44°F)		 7°C
(45°F)		 8°C
(47°F)		 9°C
(49°F)		 11°C
(52°F)		 12°C
(54°F)		 13°C
(56°F)		 13°C
(55°F)		 11°C
(52°F)		 8°C
(47°F)		 7°C
(45°F)
Mean minimum 2°C
(35°F)		 2°C
(36°F)		 2°C
(37°F)		 5°C
(40°F)		 6°C
(43°F)		 7°C
(46°F)		 10°C
(50°F)		 11°C
(52°F)		 9°C
(48°F)		 7°C
(44°F)		 4°C
(39°F)		 2°C
(36°F)
Minimum 1°C
(34°F)		 -0°C
(32°F)		 2°C
(35°F)		 3°C
(38°F)		 5°C
(40°F)		 6°C
(43°F)		 9°C
(49°F)		 10°C
(51°F)		 8°C
(47°F)		 6°C
(42°F)		 2°C
(36°F)		 1°C
(34°F)

Compare climate in Seaside with other places

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

Monthly average precipitation in Seaside, California, United States §

Seaside usually has the most precipitation in January, March and December, with an average of 9 rainy days and 104 mm (4.1 inches) of precipitation per month.The driest months in Seaside are June, July and August. On average, 2 mm (0.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Seaside, California, 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) 113 (4.5) 94 (3.7) 99 (3.9) 33 (1.3) 23 (0.9) 3 (0.1) 2 (0.1) 2 (0.1) 6 (0.3) 19 (0.7) 40 (1.6) 100 (3.9)
Average precipitation days (≥ 1 mm) 8 9 13 5 3 0 0 0 0 1 4 8

Monthly sunshine hours in Seaside, California, United States §

The sunniest months in Seaside are May, June and July, when the sun shines an average of 12 hours 12 minutes a day.Least sunny months in Seaside: January, February and December receive an average of 6 hours 29 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Seaside, California, 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 162 219 264 302 358 376 388 356 314 289 235 208
Mean daily daylight hours 9h 58m 10h 51m 11h 59m 13h 9m 14h 7m 14h 36m 14h 20m 13h 28m 12h 21m 11h 11m 10h 11m 9h 41m

Solar UV radiation in Seaside, California, United States §

Seaside experiences the highest level of ultraviolet (UV) radiation in May, June and August, when the maximum UV index can reach values of 11 - 12, which corresponds to the Extreme category of sun exposure.January, February and December are in the Moderate exposure category. In these months, the maximum values of the UV index do not exceed 5. For more detailed information, check out our hourly Seaside UV Index data.

Average daily maximum UV levels by month for Seaside, California, 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) 4 5 8 9 11 12 11 11 9 7 5 3