San Diego weather in August 2025

The weather in San Diego in August is hot. The average temperatures are between 21°C and 27°C.

You can expect a few rainy days in San Diego during August, but usually the weather is comfortable in August.

Our weather forecast can give you a great sense of what weather to expect in San Diego in August 2025.

If you’re planning to visit San Diego in the near future, we highly recommend that you review the 14 day weather forecast for San Diego before you arrive.

Temperatures

27° / 21°

Rainy Days

Snowy Days

Dry Days

Rainfall

Sun Hours

12.0

Hrs

Sun	Mon	Tue	Wed	Thu	Fri	Sat
					1 27° /21°	2 27° /21°
3 27° /21°	4 25° /21°	5 26° /20°	6 25° /20°	7 25° /20°	8 25° /20°	9 25° /20°
10 25° /20°	11 26° /21°	12 26° /21°	13 27° /21°	14 27° /21°	15 27° /22°	16 26° /20°
17 26° /21°	18 26° /20°	19 26° /20°	20 27° /21°	21 25° /21°	22 25° /20°	23 25° /19°
24 25° /21°	25 27° /21°	26 28° /21°	27 27° /21°	28 26° /20°	29 26° /20°	30 26° /21°
31 26° /21°

Explore the weather in San Diego in other months

San Diego annual weather

Month	Temperatures	Rainy Days	Dry Days	Rainfall	Weather	More details
January	19° / 11°	2	29	56 mm	Good	San Diego in January
February	19° / 11°	2	26	66 mm	Good	San Diego in February
March	19° / 12°	2	29	44 mm	Good	San Diego in March
April	20° / 13°	1	29	16 mm	Good	San Diego in April
May	21° / 14°	1	30	19 mm	Good	San Diego in May
June	23° / 17°	0	30	5 mm	Perfect	San Diego in June
July	26° / 20°	1	30	25 mm	Perfect	San Diego in July
August	27° / 21°	1	30	21 mm	Perfect	San Diego in August
September	27° / 20°	1	29	15 mm	Perfect	San Diego in September
October	25° / 18°	1	30	10 mm	Perfect	San Diego in October
November	22° / 15°	1	29	34 mm	Good	San Diego in November
December	18° / 11°	2	29	60 mm	Good	San Diego in December