27.08
thu
thu
Day
75°F
S 2 mph
Precip.
57%
57%
Night
63°F
SW 6 mph
Precip.
31%
31%
28.08
fri
fri
Day
72°F
SW 7 mph
Precip.
17%
17%
Night
63°F
SW 5 mph
Precip.
27%
27%
29.08
sat
sat
Day
72°F
SW 3 mph
Precip.
62%
62%
Night
63°F
SW 4 mph
Precip.
39%
39%
30.08
sun
sun
Day
72°F
SW 4 mph
Precip.
57%
57%
Night
61°F
SW 5 mph
Precip.
29%
29%
31.08
mon
mon
Day
77°F
S 2 mph
Precip.
37%
37%
Night
61°F
SW 4 mph
Precip.
32%
32%
01.09
tue
tue
Day
66°F
N 2 mph
Precip.
34%
34%
Night
59°F
SW 3 mph
Precip.
28%
28%
02.09
wed
wed
Day
75°F
E 3 mph
Precip.
21%
21%
Night
61°F
SW 3 mph
Precip.
72%
72%
Sea water temperature in August, °F
Show year:
2026
2025
2024
The average sea water temperature in August of 2026 was 86.9°F. The highest and lowest sea temperatures during the month were 87.8°F and 86.2°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 83.9°F. The highest and lowest sea temperatures during the month were 84.6°F and 83.3°F.
Air temperature in Cartago, °F
Precipitation total in Cartago, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Cartago
Cartago on a weather map
Places in Costa Rica:
Name
°F
24 Hours Forecast
Cartago
Local time: 00:35
August 27, thursday
0300
59°F
SW
6 mph
6 mph
0600
63°F
SW
6 mph
6 mph
0900
72°F
SW
4 mph
4 mph
1200
75°F
S
2 mph
2 mph
1500
73°F
S
2 mph
2 mph
1800
64°F
SW
4 mph
4 mph
2100
63°F
SW
6 mph
6 mph
August 28, friday
0000
63°F
SW
6 mph
6 mph
