Measurements:
°C
°F
CURRENT WEATHER
08:50
San Jose
80°F
SW 1 mph
Feels like: 82°F
Precip: 100%
World Resorts Costa Rica San Jose Weather

7 Day Weather Forecast

05.29
fri
DAY
74°F
S 2 mph
precip
100%
NIGHT
64°F
W 2 mph
precip
100%
05.30
sat
DAY
76°F
E 3 mph
precip
100%
NIGHT
66°F
N 1 mph
precip
0%
05.31
sun
DAY
78°F
E 2 mph
precip
100%
NIGHT
66°F
NE 1 mph
precip
74%
06.01
mon
DAY
76°F
SE 2 mph
precip
100%
NIGHT
62°F
W 2 mph
precip
100%
06.02
tue
DAY
80°F
E 4 mph
precip
100%
NIGHT
66°F
NW 1 mph
precip
100%
06.03
wed
DAY
78°F
NE 3 mph
precip
100%
NIGHT
64°F
NW 1 mph
precip
0%
06.04
thu
DAY
76°F
NE 5 mph
precip
100%
NIGHT
64°F
N 2 mph
precip
0%

San Jose Sea Water Temperature in May, °F

Select Year: 2026 2025 2024

The average sea surface temperature in May 2026 for San Jose was 30.3°F. The maximum and minimum values were 29.8°F and 30.8°F respectively.

San Jose on the Weather Map

Best Time to Visit San Jose
The most sunny months:
February 13 days
January 12 days
March 11 days
The most warm months:
March 83.2 °F
April 82.4 °F
February 81.5 °F
Warmest sea temperature:
April 89.7 °F
March 89.4 °F
May 89.1 °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
more details