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Monthly climate in Buellton, California, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Buellton features a warm-summer Mediterranean climate (Csb).Temperatures typically range between 13 °C (55 °F) and 18 °C (64 °F) through the year, but rarely can drop to 6 °C (43 °F) or can rise to as high as 31 °C (88 °F).The average annual precipitation amounts to about 395 mm (15.5 inches) and receives 30 rainy days on the 1 mm (0.04 inches) threshold annually.Buellton enjoys an average of 3608 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 Buellton, California, United States §

The warmest months in Buellton are August, September and October, with daily mean temperatures ranging from 18 to 18 °C (64 - 64 °F) throughout the day. The coldest temperatures usually occur in January, February and March, when daily mean temperatures range from 13 to 13 °C (55 - 56 °F) throughout the day. On average each year, Buellton experiences 3 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 Buellton, 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)		 22°C
(72°F)		 21°C
(70°F)		 24°C
(75°F)		 22°C
(72°F)		 23°C
(74°F)		 28°C
(82°F)		 26°C
(78°F)		 28°C
(82°F)		 31°C
(88°F)		 24°C
(76°F)		 23°C
(73°F)
Mean maximum 20°C
(69°F)		 19°C
(66°F)		 19°C
(66°F)		 21°C
(70°F)		 19°C
(67°F)		 21°C
(69°F)		 24°C
(75°F)		 23°C
(74°F)		 25°C
(77°F)		 26°C
(80°F)		 23°C
(75°F)		 20°C
(68°F)
Average high 15°C
(60°F)		 15°C
(59°F)		 14°C
(58°F)		 15°C
(60°F)		 16°C
(60°F)		 17°C
(63°F)		 19°C
(66°F)		 19°C
(67°F)		 20°C
(68°F)		 20°C
(68°F)		 18°C
(65°F)		 16°C
(60°F)
Daily mean 13°C
(56°F)		 13°C
(55°F)		 13°C
(55°F)		 13°C
(56°F)		 14°C
(57°F)		 15°C
(60°F)		 17°C
(63°F)		 18°C
(64°F)		 18°C
(64°F)		 18°C
(64°F)		 16°C
(61°F)		 14°C
(57°F)
Average low 11°C
(53°F)		 11°C
(52°F)		 11°C
(52°F)		 12°C
(53°F)		 12°C
(54°F)		 14°C
(57°F)		 15°C
(60°F)		 16°C
(61°F)		 16°C
(61°F)		 16°C
(60°F)		 14°C
(57°F)		 12°C
(54°F)
Mean minimum 8°C
(47°F)		 7°C
(45°F)		 8°C
(47°F)		 9°C
(49°F)		 10°C
(51°F)		 12°C
(54°F)		 14°C
(57°F)		 14°C
(58°F)		 14°C
(57°F)		 13°C
(56°F)		 11°C
(52°F)		 9°C
(48°F)
Minimum 7°C
(45°F)		 6°C
(43°F)		 7°C
(45°F)		 9°C
(48°F)		 9°C
(49°F)		 11°C
(53°F)		 13°C
(56°F)		 14°C
(57°F)		 13°C
(55°F)		 11°C
(53°F)		 8°C
(46°F)		 9°C
(48°F)

Compare climate in Buellton with other places

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

Monthly average precipitation in Buellton, California, United States §

Buellton usually has the most precipitation in January, February and March, with an average of 6 rainy days and 87 mm (3.4 inches) of precipitation per month.The driest months in Buellton 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 Buellton, 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) 95 (3.8) 78 (3.1) 86 (3.4) 17 (0.7) 10 (0.4) 1 (0.1) 1 (0.0) 1 (0.0) 1 (0.1) 9 (0.4) 25 (1.0) 69 (2.7)
Average precipitation days (≥ 1 mm) 6 6 7 2 1 0 0 0 0 0 2 6

Monthly sunshine hours in Buellton, California, United States §

The sunniest months in Buellton are May, June and July, when the sun shines an average of 12 hours 9 minutes a day.Least sunny months in Buellton: January, February and December receive an average of 7 hours 8 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Buellton, 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 184 235 289 326 367 371 379 358 317 297 252 230
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 Buellton, California, United States §

Buellton 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 Buellton UV Index data.

Average daily maximum UV levels by month for Buellton, 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