Current Sea Water Temperature:
+90.2°F
| Maximum Sea Water Temperature in September: | 91.6°F |
| Minimum Sea Water Temperature in September: | 85.8°F |
| Average water temperature in September: | 87.6°F |
| detailed information | |
Sea Water Temperature for the Last 10 Days:
| September 07 | 90.2°F | September 02 | 90.6°F |
| September 06 | 91.2°F | September 01 | 91.2°F |
| September 05 | 91.6°F | August 31 | 91.0°F |
| September 04 | 91.6°F | August 30 | 90.8°F |
| September 03 | 90.2°F | August 29 | 91.2°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 2026 for San Jose was 90.7°F. The maximum and minimum values were 89.6°F and 91.6°F respectively.
Costa Rica Resorts:
NAME
F°
| Alajuela |  |
+66 |
| Cahuita | |
+80 |
| El Roble | |
+78 |
| Heredia |  |
+60 |
| Jaco | |
+82 |
| Limon | |
+80 |
| Playa Flamingo | |
+80 |
| Playas del Coco | |
+80 |
| Puerto Limon | |
+80 |
| Puerto Viejo de Talamanca | |
+80 |
| Samara | |
+76 |
| San Jose | |
+60 |
| Santa Teresa | |
+80 |
| Tamarindo | |
+80 |
| Tortuguero | |
+76 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
San Jose
Local time: 03:10
07 sep, monday
| 0600 |  |
60°F | W 3 mph |
| 0900 |  |
74°F | S 2 mph |
| 1200 | |
74°F | S 3 mph |
| 1500 | |
70°F | SW 2 mph |
| 1800 | |
64°F | SW 3 mph |
| 2100 | |
62°F | SW 4 mph |
08 sep, tuesday
| 0000 | |
62°F | SW 4 mph |
| 0300 |  |
62°F | SW 4 mph |