Measurements:
°C
°F
San Jose
78°F
SW 3 mph
Feels like: 80°F
Precip: 100%
World Resorts Costa Rica San Jose Weather

San Jose Sea Water Temperature

Current Sea Water Temperature:
+89.8°F
Maximum Sea Water Temperature in March: 92.2°F
Minimum Sea Water Temperature in March: 87.4°F
Average water temperature in March: 89.3°F

Sea Water Temperature for the Last 10 Days:

March 10 89.8°F March 05 89.6°F
March 09 90.2°F March 04 89.8°F
March 08 90.2°F March 03 89.8°F
March 07 90.2°F March 02 89.4°F
March 06 89.8°F March 01 89.6°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

Select Year: 2025 2024 2023

The average sea surface temperature in April 2025 for San Jose was 90.9°F. The maximum and minimum values were 90.2°F and 92.0°F respectively.

Sea Water Temperature in March

Select Year: 2025 2024 2023

The average sea surface temperature in March 2025 for San Jose was 90.3°F. The maximum and minimum values were 89.2°F and 91.2°F respectively.

Sea Water Temperature in May

Select Year: 2025 2024 2023

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.

Best Time to Visit San Jose
The most sunny months:
February 13 days
January 12 days
March 12 days
The most warm months:
March 83.3 °F
April 82.6 °F
February 81.5 °F
Warmest sea temperature:
April 89.6 °F
March 89.3 °F
May 89.0 °F
The most cold months:
November 76.1 °F
October 76.4 °F
July 77.6 °F
The most rainy months:
October 25 days
June 25 days
September 25 days
The most windy months:
February 6 mph
January 6 mph
March 5 mph

San Jose on the Weather Map

Costa Rica Resorts:
NAME
Alajuela +80
Cahuita +84
Cartago +72
Heredia +78
Jaco +88
Limon +84
Playa Flamingo +94
Playas del Coco +94
Puerto Limon +84
Quepos +90
Samara +92
San Jose +78
Santa Teresa +88
Tamarindo +94
Tortuguero +86
24 Hours Weather Forecast
San Jose
Local time: 16:15
10 mar, tuesday
1800 66°F
SW
5 mph
2100 62°F
SW
6 mph
11 mar, wednesday
0000 60°F
SW
6 mph
0300 58°F
SW
6 mph
0600 56°F
SW
6 mph
0900 80°F
SW
3 mph
1200 84°F
S
2 mph
1500 72°F
SW
3 mph