San Francisco Weather: May
 |
Average Day Temperature: | 60.3°F |
|
Average Night Temperature: | 52.1°F |
|
Sea Water Temperature: | 57.3°F |
|
Number of Sunny Days: | 17 days |
| Sunshine Hours: | 13.8 - 14.6 hours | |
|
Number of Rainy Days: | 1 day |
| Precipitation Totals: | 0.4 in | |
| detailed information | ||
forecast
| San Francisco |
Temperature
| San Francisco |
Air Temperature in May, °F
The highest day temperature in May 2025 was 69°F. The lowest night temperature was 49°F. The average values for day and night temperatures during May were 56.3°F и 50.8°F respectivly.
San Francisco Water Sea Temperature in May, °F
The average sea surface temperature in May 2025 for San Francisco was 59.4°F. The maximum and minimum values were 56.8°F and 60.8°F respectively.
Most of the days in May are sunny but you can also expect cloudy and gloomy days.
Precipitation Totals in May, in
Precipitation total in May for San Francisco is 0.4 in.
The average wind speed in May is 9.9 mph. It makes May the most windy month of the year for San Francisco.
We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for San Francisco in May is 9.7 hours.
San Francisco on the Weather Map
| Chicago |  |
-2 |
| Hawaii | |
+78 |
| Honolulu | |
+78 |
| Houston | |
+44 |
| Las Vegas |  |
+40 |
| Los Angeles | |
+52 |
| Maui | |
+72 |
| Miami | |
+72 |
| Miami Beach |  |
+80 |
| New York | |
+18 |
| San Diego | |
+54 |
| San Francisco | |
+46 |
| Sarasota | |
+62 |
| Tampa | |
+62 |
| Washington | |
+28 |
| 0300 |  |
46°F | SW 3 mph |
| 0600 |  |
48°F | SW 4 mph |
| 0900 | |
48°F | SW 5 mph |
| 1200 | |
48°F | SW 3 mph |
| 1500 |  |
50°F | SE 2 mph |
| 1800 | |
50°F | E 4 mph |
| 2100 | |
52°F | E 3 mph |
| 0000 | |
52°F | N 2 mph |