Current sea water temperature:
+62.4°F
| Minimum sea water temperature in December: | 65.5°F |
| Maximum sea water temperature in December: | 58.5°F |
| Average sea water temperature in December: | 62.0°F |
| more information | |
14 days
forecast
forecast
| San Jose |
monthly
weather
weather
| San Jose |
Sea water temperature for the last 10 days:
| December 18 | 62.4°F | December 13 | 63.0°F |
| December 17 | 62.4°F | December 12 | 62.8°F |
| December 16 | 62.4°F | December 11 | 62.6°F |
| December 15 | 62.4°F | December 10 | 62.6°F |
| December 14 | 62.6°F | December 9 | 63.0°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 August, September and July.
Monthly Sea Temperatures in San Jose, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 79.1°F. The highest and lowest sea temperatures during the month were 80.6°F and 77.5°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 77.3°F. The highest and lowest sea temperatures during the month were 79.9°F and 75.0°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 78.8°F. The highest and lowest sea temperatures during the month were 81.3°F and 74.1°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 Spain:
Name
°F
24 Hours Forecast
San Jose
Local time: 20:58
December 18, thursday
2100
54°F
NE
2 mph
2 mph
December 19, friday
0000
54°F
E
4 mph
4 mph
0300
52°F
SW
4 mph
4 mph
0600
52°F
SE
2 mph
2 mph
0900
52°F
E
4 mph
4 mph
1200
59°F
NE
4 mph
4 mph
1500
59°F
NE
6 mph
6 mph
1800
55°F
NE
7 mph
7 mph
