17.07
fri
fri
Day
75°F
SW 5 mph
Precip.
30%
30%
Night
66°F
SW 6 mph
Precip.
31%
31%
18.07
sat
sat
Day
81°F
SW 4 mph
Precip.
20%
20%
Night
66°F
SW 5 mph
Precip.
24%
24%
19.07
sun
sun
Day
79°F
SW 6 mph
Precip.
10%
10%
Night
64°F
SW 6 mph
Precip.
21%
21%
20.07
mon
mon
Day
75°F
SW 4 mph
Precip.
47%
47%
Night
64°F
SW 4 mph
Precip.
53%
53%
21.07
tue
tue
Day
66°F
W 3 mph
Precip.
87%
87%
Night
63°F
SW 5 mph
Precip.
75%
75%
22.07
wed
wed
Day
68°F
S 1 mph
Precip.
57%
57%
Night
64°F
S 1 mph
Precip.
94%
94%
23.07
thu
thu
Day
64°F
S 2 mph
Precip.
91%
91%
Night
63°F
SW 3 mph
Precip.
80%
80%
sea water
temperature
temperature
| San Jose |
monthly
weather
weather
| San Jose |
current
weather
weather
| San Jose |
14 days
forecast
forecast
| San Jose |
Sea water temperature in July, °F
Show year:
2026
2025
2024
The average sea water temperature in July of 2026 was 86.9°F. The highest and lowest sea temperatures during the month were 87.8°F and 86.4°F.
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 84.4°F. The highest and lowest sea temperatures during the month were 85.3°F and 83.8°F.
Air temperature in San Jose, °F
Precipitation total in San Jose, in.
* Charts above show average data for the last 3 years.
Best time for vacation in San Jose
San Jose on a weather map
Places in Costa Rica:
Name
°F
24 Hours Forecast
San Jose
Local time: 15:06
July 17, friday
1800
68°F
SW
5 mph
5 mph
2100
66°F
SW
6 mph
6 mph
July 18, saturday
0000
66°F
SW
6 mph
6 mph
0300
64°F
SW
6 mph
6 mph
0600
64°F
SW
6 mph
6 mph
0900
73°F
SW
4 mph
4 mph
1200
81°F
SW
4 mph
4 mph
1500
77°F
SW
4 mph
4 mph
