San Francisco, CA weather in April
In April, San Francisco sees highs around 63°F and lows around 50°F: cool, with some rain. Rain falls on about 7 days. Good for outdoor plans.
- Normal high
- 63°F
- Normal low
- 50°F
- Wet days
- 7
- 1.6 in total
- Muggy days
- 0
- dew point 65°F+
How April changes from start to finish
| April 1 | April 30 | |
|---|---|---|
| Normal high | 63°F | 63°F |
| Normal low | 49°F | 50°F |
| Chance of a wet day | 28% | 18% |
| Sunrise / sunset | 6:54 am / 7:32 pm | 6:14 am / 7:58 pm |
| Daylight | 12.6 h | 13.7 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Pacific Time).
A typical April day
- 6 am51°Fdew point 46°F
- 9 am57°Fdew point 47°F
- Noon62°Fdew point 47°F
- 3 pm62°Fdew point 46°F
- 6 pm57°Fdew point 46°F
- 9 pm54°Fdew point 46°F
NOAA hourly normals (local standard time) from San Francisco Intl Airport (11 mi away); average wind 12 mph; clear or few clouds in 38% of daytime hours, mostly cloudy or overcast in 42%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F9 of 30
- Beach dayshigh 80-95°F, under 0.05 in of rain, afternoon wind under 15 mph1 of 30
- Hot dayshigh 90°F or more0 of 30
- Muggy daysdaily mean dew point 65°F or more0 of 30
- Wet daysat least 0.01 in of rain or melted snow7 of 30
- Notable rainat least 0.10 in4 of 30
- Freezing nightslow 32°F or below0 of 30
Average days per April, counted from daily records for each year 1991-2020.
Rain in April
Normal precipitation is 1.6 in; a dry April brings about 0.6 in and a wet one about 2.2 in (25th and 75th percentiles). About 1 day brings half an inch or more.
How April varies from year to year
- Warmest April, 1991-20201992: average high 71°F
- Coolest April2001: average high 59°F
- Wettest April2006: 5.0 in
- Driest April2004: 0.1 in
- Highest reading93°F (April 20, 2009)
- Lowest reading40°F (April 9, 1999)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
April compared with March and May
| March | April | May | |
|---|---|---|---|
| Normal high | 62°F | 63°F | 64°F |
| Normal low | 49°F | 50°F | 51°F |
| Wet days | 11 | 7 | 4 |
| Comfortable days | 10 | 9 | 11 |
| Daylight | 12.0 h | 13.2 h | 14.2 h |
Highs change by +1°F from March and +1°F into May.
Nearby alternatives in April
- Warmer: Vallejo, CA24 mi · high 72°F · 6 wet days
- Drier: Visalia, CA199 mi · high 73°F · 4 wet days
- Cooler: South Lake Tahoe, CA154 mi · high 53°F · 7 wet days
How San Francisco ranks in April
- Normal high235th warmest of 378 cities; 57th of 60 in California
- Wet days122nd driest of 378
- Comfortable days203rd most of 340
Heating and cooling
April has 265 heating degree days and 5 cooling degree days (base 65°F), 9% of the year's total heating and cooling demand.
Questions
How cold is San Francisco in April?
The normal high is 63°F and the normal low is 50°F. From 1991 to 2020 the coldest April reading was 40°F (April 9, 1999).
Does it rain a lot in San Francisco in April?
About 7 days in April have at least 0.01 in of precipitation, and the normal total is 1.6 in. The wettest April in 1991-2020 was in 2006 (5.0 in); the driest was in 2004 (0.1 in).
Is April a good time to visit San Francisco?
April ranks 7th of 12 months on our comfort score for San Francisco (64 out of 100). It has about 9 comfortable days. The best months are July and August.
Where the numbers come from
- Temperature, rain and frost dates: San Francisco Downtown (USW00023272), 0.5 mi SW of the city center, 150 ft (95 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Snowfall and snow depth: San Francisco Oceanside (USC00047767), 5.7 mi SW of the city center, 8 ft . NOAA normals and daily records, 1991-2020.
- Humidity and wind by hour and cloud cover: San Francisco Intl Airport (USW00023234), 11 mi SSE of the city center, 8 ft . NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: San Francisco International Airport (724940-23234), 11 mi SSE of the city center, 10 ft . Hourly observations, 1991-2020.