San Francisco · April
Run in the morning.
Cool month: average high 61°F, low 50°F. Humidity averages 77% — the limiting factor on most runs. Cool, runnable conditions throughout — morning still has the steadiest air and lightest wind.
Avg high / low
61° / 50°F
Humidity
77%
Rain days
6/mo
Wind
16 mph
What April feels like in San Francisco
Sunrise
06:33
Mid-month average
Sunset
19:45
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 Francisco in April
The kit for April in San Francisco: shorts and a short-sleeve are the standard kit, a wind-blocking layer for exposed routes.
April vs the surrounding months
vs March
+2° avg high
-6 rain days
San Francisco in March →
April
61°F avg high
6 rain days
Best: morning
vs May
-2° avg high
+2 rain days
San Francisco in May →
Frequently Asked Questions
What is the best time of day to run in San Francisco in April?+
Morning. Cool, runnable conditions throughout — morning still has the steadiest air and lightest wind.
What's the average temperature in San Francisco in April?+
Average high 61°F, average low 50°F.
How does April compare to surrounding months in San Francisco?+
Compared to March (avg high 59°F), April is warmer. Compared to May (avg high 63°F), April is cooler.
Does it rain often in San Francisco in April?+
Expect about 6 measurable rain days in April, on average.