Current Sea Water Temperature:
+89.6°F
| Maximum Sea Water Temperature in April: | 91.4°F |
| Minimum Sea Water Temperature in April: | 86.8°F |
| Average water temperature in April: | 89.1°F |
| detailed information | |
Sea Water Temperature for the Last 10 Days:
| April 04 | 89.6°F | March 30 | 90.4°F |
| April 03 | 89.4°F | March 29 | 90.0°F |
| April 02 | 90.0°F | March 28 | 90.6°F |
| April 01 | 90.2°F | March 27 | 89.6°F |
| March 31 | 90.2°F | March 26 | 89.4°F |
When is the Warmest Sea for Alajuela?
According to our data for the last three years for Alajuela the highest average sea water temperature was in April, May and March.
Average Water Temperature by Month, °F
Sea Water Temperature in April
The average sea surface temperature in April 2025 for Alajuela was 90.5°F. The maximum and minimum values were 89.8°F and 91.2°F respectively.
Sea Water Temperature in May
The average sea surface temperature in May 2025 for Alajuela was 89.8°F. The maximum and minimum values were 88.8°F and 90.8°F respectively.
Sea Water Temperature in March
The average sea surface temperature in March 2026 for Alajuela was 89.6°F. The maximum and minimum values were 88.8°F and 90.6°F respectively.
Costa Rica Resorts:
NAME
F°
| Alajuela |  |
+86 |
| Cahuita |  |
+86 |
| El Roble |  |
+92 |
| Jaco | |
+88 |
| Limon | |
+86 |
| Playa Flamingo | |
+88 |
| Playas del Coco | |
+88 |
| Puerto Limon | |
+86 |
| Puerto Viejo de Talamanca | |
+84 |
| Quepos | |
+88 |
| Samara | |
+88 |
| San Jose | |
+80 |
| Santa Teresa | |
+88 |
| Tamarindo | |
+88 |
| Tortuguero | |
+84 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Alajuela
Local time: 08:23
04 apr, saturday
| 0900 |  |
86°F | SW 2 mph |
| 1200 |  |
90°F | E 2 mph |
| 1500 |  |
78°F | NW 2 mph |
| 1800 | |
72°F | SW 2 mph |
| 2100 |  |
66°F | SW 3 mph |
05 apr, sunday
| 0000 |  |
64°F | SW 4 mph |
| 0300 | |
62°F | SW 4 mph |
| 0600 | |
60°F | SW 4 mph |