18.12
thu
thu
Day
57°F
SE 2 mph
Precip.
0%
0%
Night
55°F
SE 2 mph
Precip.
0%
0%
19.12
fri
fri
Day
57°F
NE 1 mph
Precip.
0%
0%
Night
55°F
N 4 mph
Precip.
0%
0%
20.12
sat
sat
Day
59°F
N 2 mph
Precip.
0%
0%
Night
57°F
N 4 mph
Precip.
89%
89%
21.12
sun
sun
Day
59°F
N 6 mph
Precip.
79%
79%
Night
57°F
NE 2 mph
Precip.
100%
100%
22.12
mon
mon
Day
59°F
N 6 mph
Precip.
100%
100%
Night
55°F
N 4 mph
Precip.
0%
0%
23.12
tue
tue
Day
57°F
N 7 mph
Precip.
68%
68%
Night
57°F
NW 8 mph
Precip.
100%
100%
24.12
wed
wed
Day
55°F
W 1 mph
Precip.
100%
100%
Night
55°F
W 3 mph
Precip.
100%
100%
sea water
temperature
temperature
| San Jose |
monthly
weather
weather
| San Jose |
current
weather
weather
| San Jose |
14 days
forecast
forecast
| San Jose |
Sea water temperature in December, °F
Show year:
2025
2024
2023
The average sea water temperature in December of 2025 was 54.4°F. The highest and lowest sea temperatures during the month were 56.8°F and 52.0°F.
Sea water temperature in January, °F
Show year:
2025
2024
2023
The average sea water temperature in January of 2025 was 52.5°F. The highest and lowest sea temperatures during the month were 54.9°F and 50.5°F.
Air temperature in San Jose, °F
Precipitation total in San Jose, in.
* Charts above show average data for the last 3 years.
Best time for vacation in San Jose
San Jose on a weather map
Places in USA:
Name
°F
24 Hours Forecast
San Jose
Local time: 17:46
December 18, thursday
1800
61°F
SE
3 mph
3 mph
2100
57°F
S
1 mph
1 mph
December 19, friday
0000
55°F
SE
2 mph
2 mph
0300
55°F
SE
2 mph
2 mph
0600
54°F
N
2 mph
2 mph
0900
55°F
E
1 mph
1 mph
1200
57°F
NE
1 mph
1 mph
1500
59°F
SE
2 mph
2 mph
