San Diego · May
Run in the morning.
Cool month: average high 68°F, low 58°F. Cool, runnable conditions throughout — morning still has the steadiest air and lightest wind.
Avg high / low
68° / 58°F
Humidity
74%
Rain days
6/mo
Wind
12 mph
What May feels like in San Diego
Sunrise
05:49
Mid-month average
Sunset
19:40
Mid-month average
Time-of-day breakdown
Morning
Coolest, driest air of the day. The window before sunrise is the most reliable comfortable hour.
Midday
Mild but UV and traffic peak. Workable if you don't mind shifting your pace.
Evening
Warm and runnable. Crowded routes but the air's typically calm.
What to wear running in San Diego in May
The kit for May in San Diego: shorts and a short-sleeve are the standard kit.
May vs the surrounding months
vs April
0° avg high
+1 rain days
San Diego in April →
May
68°F avg high
6 rain days
Best: morning
vs June
-4° avg high
+5 rain days
San Diego in June →
Frequently Asked Questions
What is the best time of day to run in San Diego in May?+
Morning. Cool, runnable conditions throughout — morning still has the steadiest air and lightest wind.
What's the average temperature in San Diego in May?+
Average high 68°F, average low 58°F.
How does May compare to surrounding months in San Diego?+
Compared to April (avg high 68°F), May is warmer. Compared to June (avg high 72°F), May is cooler.
Does it rain often in San Diego in May?+
Expect about 6 measurable rain days in May, on average.