Current Sea Water Temperature:
+90.4°F
| Maximum Sea Water Temperature in May: | 92.6°F |
| Minimum Sea Water Temperature in May: | 86.6°F |
| Average water temperature in May: | 89.0°F |
| detailed information | |
Sea Water Temperature for the Last 10 Days:
| May 06 | 90.4°F | May 01 | 90.8°F |
| May 05 | 90.4°F | April 30 | 91.2°F |
| May 04 | 90.2°F | April 29 | 90.0°F |
| May 03 | 90.2°F | April 28 | 90.2°F |
| May 02 | 90.6°F | April 27 | 90.0°F |
When is the Warmest Sea for San Jose?
According to our data for the last three years for San Jose the highest average sea water temperature was in April, March and May.
Average Water Temperature by Month, °F
Sea Water Temperature in April
The average sea surface temperature in April 2026 for San Jose was 90.7°F. The maximum and minimum values were 89.4°F and 91.6°F respectively.
Sea Water Temperature in March
The average sea surface temperature in March 2026 for San Jose was 90.3°F. The maximum and minimum values were 89.4°F and 91.4°F respectively.
Sea Water Temperature in May
The average sea surface temperature in May 2025 for San Jose was 89.8°F. The maximum and minimum values were 89.0°F and 90.8°F respectively.
Costa Rica Resorts:
NAME
F°
| Alajuela |  |
+64 |
| Cahuita |  |
+80 |
| El Roble | |
+82 |
| Heredia | |
+62 |
| Jaco | |
+84 |
| Limon | |
+80 |
| Playa Flamingo |  |
+84 |
| Playas del Coco | |
+84 |
| Puerto Limon | |
+80 |
| Puerto Viejo de Talamanca |  |
+76 |
| Quepos | |
+76 |
| Samara | |
+84 |
| San Jose | |
+62 |
| Tamarindo | |
+84 |
| Tortuguero | |
+78 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
San Jose
Local time: 06:47
06 may, wednesday
| 0900 |  |
78°F | SW 3 mph |
| 1200 |  |
80°F | S 2 mph |
| 1500 | |
74°F | SW 2 mph |
| 1800 | |
68°F | SW 3 mph |
| 2100 | |
66°F | SW 3 mph |
07 may, thursday
| 0000 |  |
64°F | W 3 mph |
| 0300 | |
60°F | SW 3 mph |
| 0600 |  |
62°F | SW 4 mph |