Verdict: Excellent month
San Francisco Weather in April
April is mild-to-cool in San Francisco, topping out near 15°C (59°F) — comfortable with a layer on. Rain is a non-issue, with only ~3 wet days in an average year. Overall, April is one of the best months of the year to be in San Francisco.
Average high
15°C / 59°F
Average low
10°C / 50°F
Rain days
~3
Precipitation
23 mm
What to pack for San Francisco in April
- Layers — t-shirts under a light jacket or sweater
- Comfortable walking shoes — every guide on this site assumes you'll use them
April against the rest of the year
Warmest in San Francisco: Oct (21°C / 70°F) · Coolest: Dec (13°C / 55°F) · Wettest: Dec (~12 rain days)
14°
8°
Jan
15°
8°
Feb
14°
9°
Mar
15°
10°
Apr
17°
11°
May
19°
13°
Jun
19°
13°
Jul
20°
14°
Aug
20°
14°
Sep
21°
13°
Oct
16°
10°
Nov
13°
8°
Dec
Daily highs / lows in °C · bars show rain days per month · ERA5 climate normals (2020–2024)