California climate guide

Temperature in California (°C)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
20°C maximum daytime temperature in January in California (Los Angeles)20
20°C maximum daytime temperature in February in California (Los Angeles)20
21°C maximum daytime temperature in March in California (Los Angeles)21
22°C maximum daytime temperature in April in California (Los Angeles)22
23°C maximum daytime temperature in May in California (Los Angeles)23
26°C maximum daytime temperature in June in California (Los Angeles)26
29°C maximum daytime temperature in July in California (Los Angeles)29
30°C maximum daytime temperature in August in California (Los Angeles)30
28°C maximum daytime temperature in September in California (Los Angeles)28
26°C maximum daytime temperature in October in California (Los Angeles)26
22°C maximum daytime temperature in November in California (Los Angeles)22
20°C maximum daytime temperature in December in California (Los Angeles)20
Min temperature (night-time)
8°C minimum night-time temperature in January in California (Los Angeles)8
9°C minimum night-time temperature in February in California (Los Angeles)9
10°C minimum night-time temperature in March in California (Los Angeles)10
11°C minimum night-time temperature in April in California (Los Angeles)11
13°C minimum night-time temperature in May in California (Los Angeles)13
15°C minimum night-time temperature in June in California (Los Angeles)15
17°C minimum night-time temperature in July in California (Los Angeles)17
18°C minimum night-time temperature in August in California (Los Angeles)18
17°C minimum night-time temperature in September in California (Los Angeles)17
15°C minimum night-time temperature in October in California (Los Angeles)15
11°C minimum night-time temperature in November in California (Los Angeles)11
8°C minimum night-time temperature in December in California (Los Angeles)8

Sunshine & Daylight in California

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
Daily hours of daylight
10 hours of daylight per day in January in California (Los Angeles)10
11 hours of daylight per day in February in California (Los Angeles)11
12 hours of daylight per day in March in California (Los Angeles)12
13 hours of daylight per day in April in California (Los Angeles)13
14 hours of daylight per day in May in California (Los Angeles)14
14 hours of daylight per day in June in California (Los Angeles)14
14 hours of daylight per day in July in California (Los Angeles)14
13 hours of daylight per day in August in California (Los Angeles)13
12 hours of daylight per day in September in California (Los Angeles)12
11 hours of daylight per day in October in California (Los Angeles)11
10 hours of daylight per day in November in California (Los Angeles)10
10 hours of daylight per day in December in California (Los Angeles)10

Rainfall in California

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
5 days with some rainfall in January in California (Los Angeles)5
5 days with some rainfall in February in California (Los Angeles)5
6 days with some rainfall in March in California (Los Angeles)6
3 days with some rainfall in April in California (Los Angeles)3
1 day with some rainfall in May in California (Los Angeles)1
0 days with some rainfall in June in California (Los Angeles)0
0 days with some rainfall in July in California (Los Angeles)0
1 day with some rainfall in August in California (Los Angeles)1
2 days with some rainfall in September in California (Los Angeles)2
2 days with some rainfall in October in California (Los Angeles)2
4 days with some rainfall in November in California (Los Angeles)4
5 days with some rainfall in December in California (Los Angeles)5
Average monthly rainfall (mm)
80 mm monthly rainfall in January in California (Los Angeles)80
79 mm monthly rainfall in February in California (Los Angeles)79
67 mm monthly rainfall in March in California (Los Angeles)67
29 mm monthly rainfall in April in California (Los Angeles)29
5 mm monthly rainfall in May in California (Los Angeles)5
1 mm monthly rainfall in June in California (Los Angeles)1
1 mm monthly rainfall in July in California (Los Angeles)1
4 mm monthly rainfall in August in California (Los Angeles)4
9 mm monthly rainfall in September in California (Los Angeles)9
9 mm monthly rainfall in October in California (Los Angeles)9
51 mm monthly rainfall in November in California (Los Angeles)51
53 mm monthly rainfall in December in California (Los Angeles)53

More climate for California

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (Maximum)
UV (maximum) index 3 (Moderate) in January in California (Los Angeles)3
UV (maximum) index 4 (Moderate) in February in California (Los Angeles)4
UV (maximum) index 6 (High) in March in California (Los Angeles)6
UV (maximum) index 8 (Very High) in April in California (Los Angeles)8
UV (maximum) index 9 (Very High) in May in California (Los Angeles)9
UV (maximum) index 10 (Very High) in June in California (Los Angeles)10
UV (maximum) index 11 (Extreme) in July in California (Los Angeles)11
UV (maximum) index 10 (Very High) in August in California (Los Angeles)10
UV (maximum) index 8 (Very High) in September in California (Los Angeles)8
UV (maximum) index 6 (High) in October in California (Los Angeles)6
UV (maximum) index 4 (Moderate) in November in California (Los Angeles)4
UV (maximum) index 3 (Moderate) in December in California (Los Angeles)3
Heat & Humidity
No heat & humidity in January in California (Los Angeles)0
No heat & humidity in February in California (Los Angeles)0
No heat & humidity in March in California (Los Angeles)0
No heat & humidity in April in California (Los Angeles)0
No heat & humidity in May in California (Los Angeles)0
Low heat & humidity in June in California (Los Angeles)L
Moderate heat & humidity in July in California (Los Angeles)M
Moderate heat & humidity in August in California (Los Angeles)M
Moderate heat & humidity in September in California (Los Angeles)M
Low heat & humidity in October in California (Los Angeles)L
No heat & humidity in November in California (Los Angeles)0
No heat & humidity in December in California (Los Angeles)0

Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

Going to California? Find the best month to visit California based on the weather.

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Check climate guides for California showing average temperature, rainfall & sunshine figures for each month of the year. The climate guide shown above is for Los Angeles.

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More about California

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

The climate guide for California, represented by Los Angeles, shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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California climate overview

California on the Pacific West Coast is the third largest state in the United States after Alaska and Texas. It is also the most highly populated with over 37 million inhabitants, 75% of whom live either in Los Angeles, San Francisco or San Diego.

A unique geographical feature of California is its 650 kilometre (400 mile) long Central Valley, an enormous fertile flat expanse completely surrounded by mountains, that was once a vast inland sea. It is one of the most productive agricultural regions of the world, where an enormous variety of fruit and vegetables are grown.

The state's climate is dominated by the Pacific Ocean to the west and the Sierra Nevada Mountains to the east. The Pacific Ocean helps to moderate temperatures near the coast in all months, while the Sierra Nevada Mountains protect the state from extremes of weather on the Great Basin plateau to the east.

The result is very pleasant weather in most places with warm, generally dry and sunny conditions in all months of the year. The exceptions are inland to the east of the mountains where it can be extremely hot in summer and cold in winter, and to the north of San Francisco where winters can be rather wet and foggy in coastal areas.

Apart from the odd thunderstorm summers across the whole of California are virtually free of rainfall. In the extreme south-east rainfall is scarce throughout the year producing desert and desert-like conditions in areas such as Death Valley and Joshua Tree National Park.

In the north rain arrives from October onwards when low-pressure systems migrate southwards from the north Pacific. Rainfall is generally most persistent in December and January in the north, and from mid-January to mid- March in the south. With numerous peaks in the Sierra Nevada Mountains rising to well over 3,000 metres (10,000 ft) much of this falls as snow on high ground.

Although most of the state has less sunshine in the winter, the least sunny time along the coast from Monterey south through Los Angeles to San Diego is actually in May and June when the relatively cold waters of the Pacific generate morning cloud and sea fog. This type of weather is known as the 'June Gloom' when, at coastal places such as Santa Monica, the sun may not break through for days on end.

Earthquakes are common in California especially in western regions, which includes the highly populated conurbations of San Francisco and Los Angeles.

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