12.18
thu
thu
DAY
52°F
E 1 mph
precip
0%
0%
NIGHT
56°F
NE 3 mph
precip
0%
0%
12.19
fri
fri
DAY
56°F
NE 6 mph
precip
0%
0%
NIGHT
56°F
NE 4 mph
precip
0%
0%
12.20
sat
sat
DAY
56°F
NE 6 mph
precip
0%
0%
NIGHT
58°F
NE 19 mph
precip
100%
100%
12.21
sun
sun
DAY
58°F
NE 4 mph
precip
84%
84%
NIGHT
56°F
SE 6 mph
precip
83%
83%
12.22
mon
mon
DAY
56°F
NW 4 mph
precip
0%
0%
NIGHT
54°F
NE 5 mph
precip
100%
100%
12.23
tue
tue
DAY
54°F
SW 6 mph
precip
100%
100%
NIGHT
56°F
NW 17 mph
precip
100%
100%
12.24
wed
wed
DAY
52°F
E 11 mph
precip
100%
100%
NIGHT
50°F
NW 5 mph
precip
100%
100%
12.25
thu
thu
DAY
52°F
NW 14 mph
precip
100%
100%
NIGHT
48°F
S 4 mph
precip
100%
100%
12.26
fri
fri
DAY
50°F
SW 4 mph
precip
100%
100%
NIGHT
46°F
SW 10 mph
precip
0%
0%
12.27
sat
sat
DAY
48°F
NW 4 mph
precip
0%
0%
NIGHT
50°F
SE 7 mph
precip
24%
24%
12.28
sun
sun
DAY
52°F
SE 3 mph
precip
45%
45%
NIGHT
52°F
NW 8 mph
precip
22%
22%
12.29
mon
mon
DAY
52°F
NW 4 mph
precip
75%
75%
NIGHT
50°F
SW 6 mph
precip
0%
0%
12.30
tue
tue
DAY
52°F
SW 5 mph
precip
0%
0%
NIGHT
54°F
SW 6 mph
precip
0%
0%
Sea water
temperature
temperature
| San Francisco |
Weather in
December
December
| 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 December, °F
The average sea surface temperature in December 2025 for San Francisco was 55.6°F. The maximum and minimum values were 53.6°F and 57.8°F respectively.
San Francisco on the Weather Map
USA Resorts:
NAME
F°
| Chicago |  |
+38 |
| Hawaii |  |
+76 |
| Honolulu | |
+76 |
| Houston |  |
+64 |
| Las Vegas | |
+50 |
| Los Angeles | |
+54 |
| Maui |  |
+72 |
| Miami | |
+72 |
| Miami Beach | |
+78 |
| New York | |
+30 |
| San Diego | |
+52 |
| San Francisco | |
+50 |
| Sarasota | |
+64 |
| Tampa | |
+62 |
| Washington | |
+30 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
San Francisco
Local time: 01:19
18 dec, thursday
| 0300 |  |
48°F | E 4 mph |
| 0600 | |
50°F | E 2 mph |
| 0900 | |
52°F | N 2 mph |
| 1200 | |
52°F | E 1 mph |
| 1500 | |
54°F | E 3 mph |
| 1800 | |
54°F | E 3 mph |
| 2100 | |
56°F | E 4 mph |
19 dec, friday
| 0000 | |
56°F | NE 3 mph |