Weather · San Diego, United States
San Diego Weather in September
September in San Diego averages 34°C by day and 24°C at night, with about 49mm of rain. That makes it a reasonable time to visit.
Avg high
34°C
93°F
Avg low
24°C
75°F
Rainfall
49mm
#7 wettest of 12
What to pack
Light, breathable clothes and strong sun protection. Rain is unlikely to interrupt your plans.
Timing a trip around the weather? A Local Friend in San Diego builds it around the season for you.