Current sea water temperature:
+52.9°F
| Minimum sea water temperature in December: | 59.5°F |
| Maximum sea water temperature in December: | 50.9°F |
| Average sea water temperature in December: | 54.6°F |
| more information | |
14 days
forecast
forecast
| San Jose |
monthly
weather
weather
| San Jose |
Sea water temperature for the last 10 days:
| December 23 | 52.9°F | December 18 | 52.7°F |
| December 22 | 52.7°F | December 17 | 52.2°F |
| December 21 | 52.7°F | December 16 | 52.5°F |
| December 20 | 52.7°F | December 15 | 52.2°F |
| December 19 | 53.1°F | December 14 | 52.0°F |
Monthly sea water temperature, °F
When is the warmest sea in San Jose?
Based on the data about daily sea water temperature for the last three years the warmest sea in San Jose was noticed in September, August and July.
Monthly Sea Temperatures in San Jose, °F
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 69.5°F. The highest and lowest sea temperatures during the month were 72.5°F and 66.7°F.
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 67.0°F. The highest and lowest sea temperatures during the month were 70.3°F and 62.2°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 67.5°F. The highest and lowest sea temperatures during the month were 72.3°F and 64.4°F.
current
weather
weather
| San Jose |
weather in
December
December
| San Jose |
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: 09:32
December 23, tuesday
1200
59°F
NW
10 mph
10 mph
1500
61°F
NW
9 mph
9 mph
1800
57°F
NW
12 mph
12 mph
2100
57°F
NW
17 mph
17 mph
December 24, wednesday
0000
57°F
NW
17 mph
17 mph
0300
57°F
N
22 mph
22 mph
0600
55°F
NE
6 mph
6 mph
0900
54°F
NW
3 mph
3 mph
