Current sea water temperature:
+53.4°F
| Minimum sea water temperature in January: | 56.1°F |
| Maximum sea water temperature in January: | 50.2°F |
| Average sea water temperature in January: | 52.9°F |
| more information | |
14 days
forecast
forecast
| San Jose |
monthly
weather
weather
| San Jose |
Sea water temperature for the last 10 days:
| January 15 | 53.4°F | January 10 | 54.1°F |
| January 14 | 53.2°F | January 9 | 54.3°F |
| January 13 | 53.8°F | January 8 | 54.0°F |
| January 12 | 54.1°F | January 7 | 53.6°F |
| January 11 | 54.3°F | January 6 | 53.4°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
January
January
| 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: 03:49
January 15, thursday
0600
46°F
W
2 mph
2 mph
0900
52°F
W
2 mph
2 mph
1200
66°F
S
2 mph
2 mph
1500
73°F
S
2 mph
2 mph
1800
64°F
S
2 mph
2 mph
2100
57°F
W
2 mph
2 mph
January 16, friday
0000
54°F
W
2 mph
2 mph
0300
52°F
W
2 mph
2 mph
