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Monthly climate in Santa Ynez, California, United States

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Santa Ynez features a warm-summer Mediterranean climate (Csb). Temperatures typically range between 12 °C (55 °F) and 20 °C (68 °F) through the year, but rarely can drop to 5 °C (41 °F) or can rise to as high as 32 °C (90 °F). The average annual precipitation amounts to about 432 mm (17.0 inches) and receives 33 rainy days on the 1 mm (0.04 inches) threshold annually. Santa Ynez enjoys an average of 3599 hours of sunshine throughout the year, and daylight varies from 9 hours 51 minutes to 14 hours 25 minutes per day.

Monthly average temperatures in Santa Ynez, California, United States §

The warmest months in Santa Ynez are July, August and September, with daily mean temperatures ranging from 19 to 20 °C (67 - 68 °F) throughout the day. The coldest temperatures usually occur in January, February and March, when daily mean temperatures range from 12 to 13 °C (55 - 55 °F) throughout the day. On average each year, Santa Ynez 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 Santa Ynez, 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)		 23°C
(74°F)		 23°C
(73°F)		 28°C
(84°F)		 24°C
(75°F)		 26°C
(79°F)		 30°C
(85°F)		 29°C
(84°F)		 32°C
(90°F)		 31°C
(88°F)		 27°C
(81°F)		 23°C
(74°F)
Mean maximum 21°C
(70°F)		 19°C
(67°F)		 20°C
(69°F)		 23°C
(73°F)		 22°C
(71°F)		 23°C
(75°F)		 26°C
(80°F)		 26°C
(80°F)		 27°C
(82°F)		 28°C
(83°F)		 27°C
(80°F)		 21°C
(71°F)
Average high 15°C
(60°F)		 15°C
(59°F)		 15°C
(59°F)		 17°C
(62°F)		 17°C
(63°F)		 19°C
(67°F)		 21°C
(70°F)		 22°C
(71°F)		 21°C
(71°F)		 21°C
(70°F)		 19°C
(66°F)		 16°C
(61°F)
Daily mean 13°C
(55°F)		 12°C
(55°F)		 12°C
(55°F)		 14°C
(58°F)		 15°C
(59°F)		 17°C
(63°F)		 19°C
(67°F)		 20°C
(68°F)		 19°C
(67°F)		 18°C
(65°F)		 16°C
(61°F)		 13°C
(56°F)
Average low 11°C
(52°F)		 10°C
(51°F)		 10°C
(51°F)		 12°C
(54°F)		 13°C
(55°F)		 15°C
(59°F)		 17°C
(64°F)		 18°C
(64°F)		 17°C
(63°F)		 16°C
(61°F)		 14°C
(57°F)		 11°C
(52°F)
Mean minimum 7°C
(44°F)		 6°C
(43°F)		 7°C
(44°F)		 9°C
(48°F)		 9°C
(49°F)		 12°C
(54°F)		 15°C
(59°F)		 15°C
(59°F)		 14°C
(57°F)		 12°C
(55°F)		 10°C
(50°F)		 7°C
(46°F)
Minimum 6°C
(42°F)		 5°C
(41°F)		 6°C
(43°F)		 7°C
(46°F)		 8°C
(47°F)		 11°C
(53°F)		 14°C
(57°F)		 14°C
(58°F)		 12°C
(53°F)		 11°C
(51°F)		 6°C
(44°F)		 7°C
(45°F)

Compare climate in Santa Ynez with other places

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

Monthly average precipitation in Santa Ynez, California, United States §

Santa Ynez usually has the most precipitation in January, February and March, with an average of 7 rainy days and 95 mm (3.7 inches) of precipitation per month. The driest months in Santa Ynez are July, August and September. On average, 2 mm (0.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Santa Ynez, 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) 103 (4.1) 89 (3.5) 93 (3.7) 19 (0.8) 11 (0.4) 2 (0.1) 1 (0.0) 1 (0.1) 2 (0.1) 10 (0.4) 27 (1.1) 72 (2.8)
Average precipitation days (≥ 1 mm) 6 6 9 2 2 0 0 0 0 0 2 6

Monthly sunshine hours in Santa Ynez, California, United States §

The sunniest months in Santa Ynez are May, June and July, when the sun shines an average of 12 hours 10 minutes a day. Least sunny months in Santa Ynez: January, February and December receive an average of 7 hours 3 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Santa Ynez, 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 184 231 285 326 367 370 381 359 316 295 252 226
Mean daily daylight hours 10h 7m 10h 56m 11h 59m 13h 4m 13h 58m 14h 25m 14h 10m 13h 22m 12h 20m 11h 15m 10h 19m 9h 51m

Solar UV radiation in Santa Ynez, California, United States §

Santa Ynez experiences the highest level of ultraviolet (UV) radiation in May, July and August, when the maximum UV index can reach values of 11 - 12, which corresponds to the Extreme category of sun exposure. January, November 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 Santa Ynez UV Index data.

Average daily maximum UV levels by month for Santa Ynez, 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 6 8 10 11 11 12 11 10 7 5 4

Detailed Monthly Weather Insights for Santa Ynez, California, United States

Discover in-depth weather details for every month in Santa Ynez. 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 Santa Ynez'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.