Average temperatures, rainfall and packing tips for San Francisco, United States in April
April in San Francisco is typically mild, with average daytime highs around 17°C and nights near 9°C. Temperature-wise it sits mid-range for San Francisco (the 7th warmest month).
Rainfall is light in April: roughly 28 mm across the whole month.
If your dates are flexible, the most comfortable months in San Francisco are usually May, June, July, August, September and October.
← San Francisco weather tomorrow (live)
In April, San Francisco averages a daytime high of about 17°C and a night-time low of around 9°C, based on recent historical data.
Rainfall is light in April: roughly 28 mm across the whole month.
April is a workable time to visit San Francisco, with mild days - just pack accordingly. If your dates are flexible, the most comfortable months in San Francisco are usually May, June, July, August, September and October.