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Monthly climate in Imperial Beach, California, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Imperial Beach features a cold semi-arid climate (BSk).Temperatures typically range between 13 °C (56 °F) and 21 °C (71 °F) through the year, but rarely can drop to 6 °C (43 °F) or can rise to as high as 32 °C (90 °F).The average annual precipitation amounts to about 385 mm (15.2 inches) and receives 43 rainy days on the 1 mm (0.04 inches) threshold annually.Imperial Beach enjoys an average of 3629 hours of sunshine throughout the year, and daylight varies from 10 hours 2 minutes to 14 hours 14 minutes per day.

Monthly average temperatures in Imperial Beach, California, United States §

The warmest months in Imperial Beach are July, August and September, with daily mean temperatures ranging from 21 to 21 °C (69 - 71 °F) throughout the day. The coldest temperatures usually occur in January, February and March, when daily mean temperatures range from 13 to 14 °C (56 - 57 °F) throughout the day. On average each year, Imperial Beach experiences 19 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 Imperial Beach, 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
(75°F)		 25°C
(77°F)		 24°C
(76°F)		 27°C
(81°F)		 24°C
(76°F)		 27°C
(80°F)		 28°C
(83°F)		 28°C
(83°F)		 30°C
(86°F)		 32°C
(90°F)		 27°C
(80°F)		 23°C
(73°F)
Mean maximum 21°C
(71°F)		 21°C
(70°F)		 21°C
(70°F)		 24°C
(75°F)		 22°C
(72°F)		 24°C
(75°F)		 26°C
(79°F)		 27°C
(80°F)		 27°C
(81°F)		 28°C
(83°F)		 26°C
(78°F)		 21°C
(70°F)
Average high 17°C
(62°F)		 16°C
(61°F)		 16°C
(62°F)		 18°C
(64°F)		 18°C
(65°F)		 20°C
(69°F)		 23°C
(73°F)		 24°C
(75°F)		 23°C
(74°F)		 22°C
(72°F)		 20°C
(68°F)		 17°C
(63°F)
Daily mean 14°C
(57°F)		 13°C
(56°F)		 14°C
(57°F)		 15°C
(60°F)		 16°C
(61°F)		 18°C
(65°F)		 21°C
(69°F)		 21°C
(71°F)		 21°C
(70°F)		 19°C
(67°F)		 17°C
(62°F)		 14°C
(58°F)
Average low 11°C
(53°F)		 11°C
(52°F)		 12°C
(53°F)		 13°C
(56°F)		 14°C
(58°F)		 16°C
(61°F)		 19°C
(66°F)		 20°C
(68°F)		 19°C
(66°F)		 17°C
(63°F)		 14°C
(58°F)		 12°C
(54°F)
Mean minimum 8°C
(46°F)		 7°C
(46°F)		 8°C
(47°F)		 11°C
(52°F)		 12°C
(53°F)		 14°C
(58°F)		 16°C
(61°F)		 17°C
(63°F)		 17°C
(62°F)		 14°C
(57°F)		 11°C
(53°F)		 9°C
(48°F)
Minimum 7°C
(45°F)		 6°C
(43°F)		 7°C
(45°F)		 10°C
(51°F)		 11°C
(52°F)		 14°C
(57°F)		 16°C
(60°F)		 17°C
(62°F)		 16°C
(61°F)		 12°C
(53°F)		 9°C
(49°F)		 8°C
(46°F)

Compare climate in Imperial Beach with other places

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

Monthly average precipitation in Imperial Beach, California, United States §

Imperial Beach usually has the most precipitation in January, February and December, with an average of 6 rainy days and 68 mm (2.7 inches) of precipitation per month.The driest months in Imperial Beach are July, August and September. On average, 6 mm (0.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Imperial Beach, 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) 60 (2.3) 75 (3.0) 57 (2.2) 27 (1.1) 26 (1.0) 7 (0.3) 5 (0.2) 5 (0.2) 6 (0.2) 14 (0.6) 35 (1.4) 68 (2.7)
Average precipitation days (≥ 1 mm) 6 7 10 4 6 0 0 0 0 2 2 6

Monthly sunshine hours in Imperial Beach, California, United States §

The sunniest months in Imperial Beach are June, July and August, when the sun shines an average of 11 hours 56 minutes a day.Least sunny months in Imperial Beach: January, February and December receive an average of 7 hours 24 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Imperial Beach, 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 195 242 299 324 359 364 375 359 317 297 258 235
Mean daily daylight hours 10h 16m 11h 1m 12h 0m 13h 0m 13h 50m 14h 14m 14h 1m 13h 16m 12h 19m 11h 19m 10h 27m 10h 2m

Solar UV radiation in Imperial Beach, California, United States §

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

Average daily maximum UV levels by month for Imperial Beach, 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 11 11 10 7 5 4