Current sea water temperature:
+86.9°F
| Minimum sea water temperature in May: | 88.3°F |
| Maximum sea water temperature in May: | 82.9°F |
| Average sea water temperature in May: | 85.1°F |
| more information | |
14 days
forecast
forecast
| San Jose |
monthly
weather
weather
| San Jose |
Sea water temperature for the last 10 days:
| May 17 | 86.9°F | May 12 | 86.9°F |
| May 16 | 87.4°F | May 11 | 86.5°F |
| May 15 | 87.1°F | May 10 | 87.1°F |
| May 14 | 86.7°F | May 9 | 86.2°F |
| May 13 | 86.7°F | May 8 | 85.6°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:
2026
2025
2024
The average sea water temperature in April of 2026 was 86.6°F. The highest and lowest sea temperatures during the month were 87.4°F and 85.5°F.
Sea water temperature in March, °F
Show year:
2026
2025
2024
The average sea water temperature in March of 2026 was 86.3°F. The highest and lowest sea temperatures during the month were 87.3°F and 85.5°F.
Sea water temperature in May, °F
Show year:
2026
2025
2024
The average sea water temperature in May of 2026 was 86.6°F. The highest and lowest sea temperatures during the month were 87.4°F and 85.6°F.
current
weather
weather
| San Jose |
weather in
May
May
| 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: 15:50
May 17, sunday
1800
68°F
SW
3 mph
3 mph
2100
68°F
SW
4 mph
4 mph
May 18, monday
0000
64°F
SW
5 mph
5 mph
0300
61°F
SW
5 mph
5 mph
0600
63°F
SW
6 mph
6 mph
0900
75°F
SW
4 mph
4 mph
1200
82°F
SW
4 mph
4 mph
1500
77°F
S
4 mph
4 mph
