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Monthly climate in Topanga, California, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Topanga features a warm-summer Mediterranean climate (Csb).Temperatures typically range between 14 °C (57 °F) and 23 °C (74 °F) through the year, but rarely can drop to 4 °C (39 °F) or can rise to as high as 38 °C (101 °F).The average annual precipitation amounts to about 326 mm (12.9 inches) and receives 27 rainy days on the 1 mm (0.04 inches) threshold annually.Topanga enjoys an average of 3548 hours of sunshine throughout the year, and daylight varies from 9 hours 54 minutes to 14 hours 22 minutes per day.

Monthly average temperatures in Topanga, California, United States §

The warmest months in Topanga are July, August and September, with daily mean temperatures ranging from 22 to 23 °C (72 - 74 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 14 to 14 °C (57 - 57 °F) throughout the day. On average each year, Topanga experiences 97 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 Topanga, 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 29°C
(84°F)		 28°C
(83°F)		 27°C
(80°F)		 33°C
(92°F)		 31°C
(88°F)		 33°C
(91°F)		 38°C
(101°F)		 34°C
(93°F)		 37°C
(100°F)		 37°C
(99°F)		 32°C
(89°F)		 27°C
(80°F)
Mean maximum 24°C
(76°F)		 24°C
(75°F)		 25°C
(77°F)		 29°C
(85°F)		 27°C
(82°F)		 29°C
(85°F)		 32°C
(91°F)		 32°C
(89°F)		 33°C
(92°F)		 33°C
(91°F)		 30°C
(86°F)		 24°C
(75°F)
Average high 18°C
(65°F)		 18°C
(65°F)		 19°C
(66°F)		 21°C
(70°F)		 21°C
(70°F)		 24°C
(75°F)		 27°C
(81°F)		 28°C
(82°F)		 27°C
(80°F)		 25°C
(78°F)		 22°C
(72°F)		 18°C
(65°F)
Daily mean 14°C
(57°F)		 14°C
(57°F)		 14°C
(58°F)		 17°C
(62°F)		 17°C
(63°F)		 20°C
(68°F)		 22°C
(73°F)		 23°C
(74°F)		 22°C
(72°F)		 20°C
(69°F)		 17°C
(63°F)		 14°C
(57°F)
Average low 10°C
(50°F)		 10°C
(50°F)		 11°C
(51°F)		 13°C
(55°F)		 14°C
(57°F)		 16°C
(61°F)		 19°C
(66°F)		 19°C
(67°F)		 18°C
(65°F)		 16°C
(61°F)		 13°C
(55°F)		 10°C
(50°F)
Mean minimum 5°C
(42°F)		 5°C
(42°F)		 7°C
(44°F)		 10°C
(50°F)		 11°C
(52°F)		 14°C
(57°F)		 16°C
(62°F)		 17°C
(63°F)		 15°C
(59°F)		 12°C
(54°F)		 9°C
(48°F)		 6°C
(43°F)
Minimum 5°C
(40°F)		 4°C
(39°F)		 6°C
(43°F)		 9°C
(49°F)		 10°C
(50°F)		 13°C
(56°F)		 16°C
(60°F)		 16°C
(61°F)		 14°C
(57°F)		 10°C
(50°F)		 6°C
(44°F)		 5°C
(42°F)

Compare climate in Topanga with other places

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

Monthly average precipitation in Topanga, California, United States §

Topanga usually has the most precipitation in January, March and December, with an average of 5 rainy days and 73 mm (2.9 inches) of precipitation per month.The driest months in Topanga are June, August and September. On average, 1 mm (0.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Topanga, 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) 68 (2.7) 53 (2.1) 71 (2.8) 15 (0.6) 10 (0.4) 1 (0.1) 2 (0.1) 1 (0.0) 2 (0.1) 7 (0.3) 17 (0.7) 80 (3.1)
Average precipitation days (≥ 1 mm) 4 5 8 2 1 0 0 0 0 1 1 5

Monthly sunshine hours in Topanga, California, United States §

The sunniest months in Topanga are June, July and August, when the sun shines an average of 12 hours 0 minutes a day.Least sunny months in Topanga: January, February and December receive an average of 7 hours 2 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Topanga, 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 187 228 280 314 347 364 380 360 313 291 255 224
Mean daily daylight hours 10h 9m 10h 58m 11h 59m 13h 3m 13h 56m 14h 22m 14h 7m 13h 20m 12h 19m 11h 17m 10h 22m 9h 54m

Solar UV radiation in Topanga, California, United States §

Topanga experiences the highest level of ultraviolet (UV) radiation in June, July and September, when the maximum UV index can reach values of 10 - 11, which corresponds to the Very High / 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 Topanga UV Index data.

Average daily maximum UV levels by month for Topanga, 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 9 10 11 11 10 10 7 5 4