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West Carson, California climate

Csb Warm-summer Mediterranean

West Carson has a mildly seasonal mild-temperate climate (Warm-summer Mediterranean, Köppen Csb). The hottest month is August with an average daily high near 25°C, while the coldest is December averaging around 8°C at night. Precipitation totals about 350 mm a year and is strongly seasonal — February alone averages 94 mm while August barely receives 0 mm.

☀️ Summers

Mild

Highs near 25°C in August.

About 4 days a year above 32 °C

❄️ Winters

Cool

Lows near 8°C in December.

🌧️ Rain

Fairly dry

About 350 mm of rain a year.

Wettest in February

⛅ Sky & trend

Partly cloudy

A roughly even mix of sun and cloud.

Temperature & precipitation

Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figures

Clear vs cloudy days

Share of days each month that are clear, partly cloudy or cloudy · 1991–2020 · hover a month for the day counts

West Carson climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	19	19	19	20	21	22	24	25	25	23	21	19
Avg temp (°C)	14	14	14	15	17	19	21	21	21	19	16	14
Avg low (°C)	9	9	10	11	13	15	17	17	17	14	11	8
Precipitation (mm)	75	94	57	16	8	2	1	0	3	13	20	60

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°C)	19	19	19	20	21	22
Avg temp (°C)	14	14	14	15	17	19
Avg low (°C)	9	9	10	11	13	15
Precipitation (mm)	75	94	57	16	8	2

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	24	25	25	23	21	19
Avg temp (°C)	21	21	21	19	16	14
Avg low (°C)	17	17	17	14	11	8
Precipitation (mm)	1	0	3	13	20	60

How often — frequency of weather events

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	6	4	5	3	2	0.7	1	0.2	0.4	1	3	6
Days with high ≥ 32°C (days)	—	—	0.1	—	—	0.2	0.2	0.3	0.7	2	0.6	—
Days with low ≤ 0°C (days)	0.1	—	—	—	—	—	—	—	—	—	—	—

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Days with measurable rain (days)	6	4	5	3	2	0.7
Days with high ≥ 32°C (days)	—	—	0.1	—	—	0.2
Days with low ≤ 0°C (days)	0.1	—	—	—	—	—

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	1	0.2	0.4	1	3	6
Days with high ≥ 32°C (days)	0.2	0.3	0.7	2	0.6	—
Days with low ≤ 0°C (days)	—	—	—	—	—	—

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	53	54	54	48	55	62	60	51	48	48	44	48
Clear days (≤ 30% cloud)	10	9	9	11	8	5	5	8	10	12	12	12
Partly cloudy days (30–70%)	10	8	11	11	12	10	14	14	11	9	10	9
Cloudy days (≥ 70%)	11	11	11	9	11	14	13	9	9	10	8	10
Relative humidity (%)	61	65	66	63	63	58	53	49	50	52	52	58
Wind speed (mph)	5.3	5.1	4.8	5.0	4.7	4.3	4.0	3.9	3.9	4.2	4.8	5.4

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	53	54	54	48	55	62
Clear days (≤ 30% cloud)	10	9	9	11	8	5
Partly cloudy days (30–70%)	10	8	11	11	12	10
Cloudy days (≥ 70%)	11	11	11	9	11	14
Relative humidity (%)	61	65	66	63	63	58
Wind speed (mph)	5.3	5.1	4.8	5.0	4.7	4.3

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	60	51	48	48	44	48
Clear days (≤ 30% cloud)	5	8	10	12	12	12
Partly cloudy days (30–70%)	14	14	11	9	10	9
Cloudy days (≥ 70%)	13	9	9	10	8	10
Relative humidity (%)	53	49	50	52	52	58
Wind speed (mph)	4.0	3.9	3.9	4.2	4.8	5.4

Methodology & sources

Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Redondo Beach (NOAA GHCN station USC00047326), about 8 km from the city centre.

Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.

How we build these numbers →