San Diego weather by month

San Diego runs from an average daily high of 66°F in December to 77°F in August, with overnight lows between 50°F (December) and 68°F (August).

February is the wettest month (2.2 inches) and August the driest (0.0 inches); about 10 inches fall in a normal year.

By a simple rule (average highs of 65-88°F, lows of 40°F or more and rain at or under the yearly average), the comfortable months for San Diego day trips are Apr-Nov.

Month by month in San Diego

Month	Average high	Average low	Rain (in)	Day trips open
January	66°F	50°F	2.0	129 of 129
February	66°F	52°F	2.2	129 of 129
March	67°F	54°F	1.5	129 of 129
April best	69°F	57°F	0.7	129 of 129
May best	70°F	60°F	0.3	129 of 129
June best	72°F	63°F	0.1	129 of 129
July best	75°F	66°F	0.1	129 of 129
August best	77°F	68°F	0.0	129 of 129
September best	77°F	66°F	0.1	129 of 129
October best	75°F	62°F	0.5	129 of 129
November best	71°F	55°F	0.8	129 of 129
December	66°F	50°F	1.7	129 of 129

The numbers are from NOAA's station at San Diego Lindbergh Fld, Ca (USW00023188). Climate normals 1991-2020: long-run averages, not a forecast. "Day trips open" counts the places within 3 hours that are open or in season on the 15th, from our own place data.

Questions about San Diego weather

What is the best time to visit San Diego?

By a simple rule (average highs of 65-88°F, lows of 40°F or more and rain at or under the yearly average), the comfortable months for San Diego day trips are Apr-Nov.

What is the hottest and coldest month in San Diego?

August is the hottest (average high 77°F) and December the coolest (average low 50°F).

When does it rain the most in San Diego?

February is the wettest month (2.2 inches) and August the driest (0.0 inches).

Does it snow in San Diego?

The station does not record snowfall as a normal; check the forecast for mountain areas.

Where do these weather numbers come from?

The numbers are from NOAA's station at San Diego Lindbergh Fld, Ca (USW00023188). They are 1991-2020 climate normals (long-run averages), not a forecast. For today's weather use the National Weather Service forecast.