Current sea water temperature:
+83.8°F
| Minimum sea water temperature in January: | 87.3°F |
| Maximum sea water temperature in January: | 80.8°F |
| Average sea water temperature in January: | 84.1°F |
| more information | |
14 days
forecast
forecast
| San Jose |
monthly
weather
weather
| San Jose |
Sea water temperature for the last 10 days:
| January 15 | 83.8°F | January 10 | 83.8°F |
| January 14 | 84.0°F | January 9 | 84.0°F |
| January 13 | 84.2°F | January 8 | 83.8°F |
| January 12 | 84.6°F | January 7 | 83.8°F |
| January 11 | 84.4°F | January 6 | 84.2°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 April, March and May.
Monthly Sea Temperatures in San Jose, °F
Sea water temperature in April, °F
Show year:
2025
2024
2023
The average sea water temperature in April of 2025 was 86.8°F. The highest and lowest sea temperatures during the month were 87.8°F and 86.2°F.
Sea water temperature in March, °F
Show year:
2025
2024
2023
The average sea water temperature in March of 2025 was 86.2°F. The highest and lowest sea temperatures during the month were 87.1°F and 85.3°F.
Sea water temperature in May, °F
Show year:
2025
2024
2023
The average sea water temperature in May of 2025 was 85.9°F. The highest and lowest sea temperatures during the month were 86.7°F and 85.1°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 Costa Rica:
Name
°F
24 Hours Forecast
San Jose
Local time: 08:12
January 15, thursday
0900
70°F
SW
5 mph
5 mph
1200
75°F
SW
6 mph
6 mph
1500
72°F
SW
4 mph
4 mph
1800
59°F
SW
5 mph
5 mph
2100
55°F
SW
6 mph
6 mph
January 16, friday
0000
55°F
SW
6 mph
6 mph
0300
55°F
SW
6 mph
6 mph
0600
55°F
SW
6 mph
6 mph
