Which is the hottest month in San Diego?

The hottest time of year in San Diego is normally August. Expect maximum daytime temperatures to reach 27°C with moderate heat and humidity.

Which month has the most rain in San Diego?

In terms of rainfall, January is usually the wettest month in San Diego with 53mm on average. There are normally 6 days in January with some rain.

When is it sunniest in San Diego?

The sunniest time of year in San Diego is normally January with bright sunshine on average for 76% of daylight hours; that's 8 hours of sunshine per day.

When is the sea warmest in San Diego?

The sea is usually at its warmest in San Diego in August when the water temperature reaches 20°C.

Best time to visit San Diego

Q: When is the best time to visit San Diego?

The best time to visit San Diego is July and August based on the following average weather conditions. Maximum daytime temperature = 22 - 30°C. Daily hours of sunshine = 10 hours or more.

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San Diego by month

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

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Destination

When is the best time to visit San Diego?

The best time to visit San Diego is July and August based on the following average weather conditions.

Maximum daytime temperature = 72 - 86°F [remove]
Daily hours of sunshine = 10 hours or more [remove]

Change the criteria to reflect your weather preferences.

3.5
Jan
3.5
Feb
3.5
Mar
4
Apr
4
May
4
Jun
5
Jul
5
Aug
4.5
Sep
4
Oct
4
Nov
3.5
Dec

Change criteria

Max Day Temperature (°F)

66
Jan
66
Feb
66
Mar
70
Apr
70
May
73
Jun
79
Jul
81
Aug
79
Sep
75
Oct
72
Nov
66
Dec

Hours of Sunshine (daily)

8
Jan
8
Feb
9
Mar
9
Apr
8
May
9
Jun
10
Jul
10
Aug
9
Sep
8
Oct
8
Nov
8
Dec

Best time to visit

Destination

Daytime temperature

Sunshine hours

Sea temperature

Monthly rainfall

Days with some rain

Heat & humidity

The weather guide for California (San Diego) shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by meteoblue. Find out more about our data sources.

Metric (°C) | Imperial (°F)