14.09
mon
mon
Day

73°F
SE 2 mph
Precip.
32%
32%
Night

63°F
SW 5 mph
Precip.
60%
60%
15.09
tue
tue
Day

70°F
S 2 mph
Precip.
29%
29%
Night

59°F
SW 4 mph
Precip.
22%
22%
16.09
wed
wed
Day

73°F
SE 2 mph
Precip.
45%
45%
Night

61°F
SW 5 mph
Precip.
34%
34%
17.09
thu
thu
Day

73°F
SE 2 mph
Precip.
30%
30%
Night

61°F
W 4 mph
Precip.
38%
38%
18.09
fri
fri
Day

70°F
E 4 mph
Precip.
70%
70%
Night

63°F
SW 4 mph
Precip.
36%
36%
19.09
sat
sat
Day

72°F
E 4 mph
Precip.
72%
72%
Night

63°F
NW 1 mph
Precip.
74%
74%
20.09
sun
sun
Day

68°F
E 4 mph
Precip.
75%
75%
Night

61°F
W 2 mph
Precip.
72%
72%
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: 11:24
September 14, monday
1200

73°F
SE
2 mph
2 mph
1500

68°F
S
2 mph
2 mph
1800

63°F
SW
4 mph
4 mph
2100

63°F
SW
5 mph
5 mph
September 15, tuesday
0000

63°F
SW
5 mph
5 mph
0300

61°F
W
5 mph
5 mph
0600

61°F
W
5 mph
5 mph
0900

72°F
SW
2 mph
2 mph

























