Current sea water temperature:
+83.7°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:
| December 31 | 83.7°F | December 26 | 84.0°F |
| December 30 | 83.7°F | December 25 | 84.6°F |
| December 29 | 84.4°F | December 24 | 83.8°F |
| December 28 | 84.0°F | December 23 | 83.3°F |
| December 27 | 83.8°F | December 22 | 83.1°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: 17:34
December 31, wednesday
1800
59°F
SW
6 mph
6 mph
2100
55°F
SW
7 mph
7 mph
January 01, thursday
0000
54°F
SW
7 mph
7 mph
0300
55°F
SW
6 mph
6 mph
0600
57°F
SW
6 mph
6 mph
0900
68°F
SW
6 mph
6 mph
1200
70°F
SW
5 mph
5 mph
1500
68°F
SW
5 mph
5 mph
