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Monthly climate in Watsonville, California, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Watsonville features a warm-summer Mediterranean climate (Csb).Temperatures typically range between 10 °C (51 °F) and 18 °C (65 °F) through the year, but rarely can drop to 0 °C (32 °F) or can rise to as high as 37 °C (98 °F).The average annual precipitation amounts to about 527 mm (20.7 inches) and receives 46 rainy days on the 1 mm (0.04 inches) threshold annually.Watsonville enjoys an average of 3493 hours of sunshine throughout the year, and daylight varies from 9 hours 39 minutes to 14 hours 38 minutes per day.

Monthly average temperatures in Watsonville, California, United States §

The warmest months in Watsonville are July, August and September, with daily mean temperatures ranging from 17 to 18 °C (63 - 65 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 10 to 11 °C (51 - 52 °F) throughout the day. On average each year, Watsonville experiences 26 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 Watsonville, 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 23°C
(74°F)		 25°C
(77°F)		 25°C
(77°F)		 29°C
(85°F)		 28°C
(82°F)		 33°C
(92°F)		 30°C
(86°F)		 34°C
(94°F)		 37°C
(98°F)		 32°C
(90°F)		 26°C
(79°F)		 24°C
(75°F)
Mean maximum 20°C
(69°F)		 22°C
(72°F)		 23°C
(74°F)		 25°C
(78°F)		 25°C
(78°F)		 28°C
(83°F)		 28°C
(82°F)		 29°C
(85°F)		 32°C
(89°F)		 29°C
(85°F)		 24°C
(76°F)		 20°C
(69°F)
Average high 15°C
(60°F)		 16°C
(62°F)		 16°C
(62°F)		 18°C
(65°F)		 19°C
(67°F)		 21°C
(71°F)		 22°C
(72°F)		 23°C
(74°F)		 23°C
(74°F)		 22°C
(72°F)		 19°C
(66°F)		 15°C
(60°F)
Daily mean 11°C
(51°F)		 11°C
(52°F)		 12°C
(54°F)		 13°C
(57°F)		 15°C
(59°F)		 17°C
(62°F)		 17°C
(63°F)		 18°C
(65°F)		 18°C
(65°F)		 16°C
(62°F)		 13°C
(56°F)		 10°C
(51°F)
Average low 7°C
(45°F)		 6°C
(44°F)		 8°C
(46°F)		 9°C
(49°F)		 11°C
(52°F)		 12°C
(55°F)		 13°C
(56°F)		 14°C
(58°F)		 14°C
(57°F)		 11°C
(52°F)		 8°C
(47°F)		 6°C
(44°F)
Mean minimum 1°C
(35°F)		 1°C
(34°F)		 3°C
(37°F)		 5°C
(42°F)		 7°C
(45°F)		 9°C
(49°F)		 11°C
(52°F)		 12°C
(54°F)		 10°C
(50°F)		 7°C
(44°F)		 3°C
(39°F)		 1°C
(35°F)
Minimum 0°C
(33°F)		 -0°C
(32°F)		 2°C
(36°F)		 4°C
(39°F)		 5°C
(42°F)		 8°C
(47°F)		 10°C
(51°F)		 11°C
(51°F)		 8°C
(47°F)		 6°C
(42°F)		 1°C
(34°F)		 0°C
(33°F)

Compare climate in Watsonville with other places

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

Monthly average precipitation in Watsonville, California, United States §

Watsonville usually has the most precipitation in January, February and December, with an average of 8 rainy days and 106 mm (4.2 inches) of precipitation per month.The driest months in Watsonville are June, July and August. On average, 1 mm (0.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Watsonville, 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) 122 (4.8) 105 (4.1) 88 (3.5) 32 (1.2) 19 (0.7) 1 (0.1) 1 (0.0) 1 (0.0) 2 (0.1) 22 (0.9) 42 (1.7) 92 (3.6)
Average precipitation days (≥ 1 mm) 8 7 11 4 2 0 0 0 0 1 4 9

Monthly sunshine hours in Watsonville, California, United States §

The sunniest months in Watsonville are May, June and July, when the sun shines an average of 12 hours 22 minutes a day.Least sunny months in Watsonville: January, February and December receive an average of 6 hours 28 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Watsonville, 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 162 222 266 302 366 381 390 357 315 288 233 205
Mean daily daylight hours 9h 56m 10h 50m 11h 59m 13h 10m 14h 9m 14h 38m 14h 22m 13h 29m 12h 21m 11h 11m 10h 10m 9h 39m

Solar UV radiation in Watsonville, California, United States §

Watsonville experiences the highest level of ultraviolet (UV) radiation in May, June and July, when the maximum UV index can reach values of 11 - 11, 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 Watsonville UV Index data.

Average daily maximum UV levels by month for Watsonville, 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 11 11 10 9 7 5 3