09.15
tue
tue
DAY
66°F
NE 9 mph
precip
8%
8%
NIGHT
60°F
NE 12 mph
precip
13%
13%
09.16
wed
wed
DAY
64°F
NE 13 mph
precip
21%
21%
NIGHT
62°F
E 12 mph
precip
17%
17%
09.17
thu
thu
DAY
64°F
E 6 mph
precip
13%
13%
NIGHT
62°F
E 5 mph
precip
12%
12%
09.18
fri
fri
DAY
66°F
E 5 mph
precip
7%
7%
NIGHT
60°F
E 10 mph
precip
19%
19%
09.19
sat
sat
DAY
64°F
NE 9 mph
precip
13%
13%
NIGHT
60°F
NE 8 mph
precip
21%
21%
09.20
sun
sun
DAY
64°F
NE 7 mph
precip
21%
21%
NIGHT
62°F
NE 6 mph
precip
19%
19%
09.21
mon
mon
DAY
66°F
NE 6 mph
precip
10%
10%
NIGHT
64°F
NE 6 mph
precip
14%
14%
09.22
tue
tue
DAY
72°F
E 3 mph
precip
3%
3%
NIGHT
66°F
NE 7 mph
precip
18%
18%
09.23
wed
wed
DAY
70°F
NE 7 mph
precip
15%
15%
NIGHT
66°F
NE 7 mph
precip
24%
24%
09.24
thu
thu
DAY
68°F
NE 11 mph
precip
17%
17%
NIGHT
66°F
NE 7 mph
precip
12%
12%
09.25
fri
fri
DAY
66°F
E 11 mph
precip
17%
17%
NIGHT
64°F
E 8 mph
precip
32%
32%
09.26
sat
sat
DAY
64°F
NE 8 mph
precip
73%
73%
NIGHT
62°F
NE 5 mph
precip
12%
12%
09.27
sun
sun
DAY
68°F
NW 4 mph
precip
6%
6%
NIGHT
64°F
E 4 mph
precip
8%
8%
09.28
mon
mon
DAY
68°F
N 5 mph
precip
4%
4%
NIGHT
66°F
NE 8 mph
precip
8%
8%
Sea water
temperature
temperature
| San Francisco |
Weather in
September
September
| San Francisco |
7 day weather
forecast
forecast
| San Francisco |
10 day weather
forecast
forecast
| San Francisco |
14 day weather
forecast
forecast
| San Francisco |
Monthly weather
averages
averages
| San Francisco |
Current Weather
Conditions
Conditions
| San Francisco |
When is the Best
Time to Visit?
Time to Visit?
| San Francisco |
San Francisco Sea Water Temperature in September, °F
The average sea surface temperature in September 2026 for San Francisco was 66.2°F. The maximum and minimum values were 63.6°F and 69.6°F respectively.
San Francisco on the Weather Map
USA Resorts:
NAME
F°
| Boston |  |
+62 |
| Chicago |  |
+66 |
| Hawaii |  |
+80 |
| Las Vegas |  |
+80 |
| Los Angeles | |
+72 |
| Maui |  |
+66 |
| Miami |  |
+88 |
| Myrtle Beach | |
+78 |
| New York | |
+66 |
| Panama City Beach | |
+90 |
| San Diego | |
+70 |
| San Francisco | |
+60 |
| Santa Monica | |
+72 |
| Sarasota | |
+86 |
| Washington |  |
+66 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
San Francisco
Local time: 05:59
15 sep, tuesday
| 0600 | |
60°F | N 6 mph |
| 0900 | |
60°F | N 6 mph |
| 1200 | |
66°F | NE 9 mph |
| 1500 | |
66°F | NE 14 mph |
| 1800 | |
62°F | NE 14 mph |
| 2100 | |
60°F | NE 12 mph |
16 sep, wednesday
| 0000 | |
60°F | NE 12 mph |
| 0300 | |
60°F | N 11 mph |