16.09
wed
wed
Day

73°F
SW 5 mph
Precip.
57%
57%
Night

61°F
W 4 mph
Precip.
26%
26%
17.09
thu
thu
Day

72°F
SE 2 mph
Precip.
57%
57%
Night

61°F
SW 6 mph
Precip.
31%
31%
18.09
fri
fri
Day

72°F
SE 2 mph
Precip.
35%
35%
Night

61°F
W 4 mph
Precip.
22%
22%
19.09
sat
sat
Day

70°F
E 3 mph
Precip.
56%
56%
Night

63°F
W 3 mph
Precip.
39%
39%
20.09
sun
sun
Day

68°F
E 2 mph
Precip.
79%
79%
Night

63°F
NW 2 mph
Precip.
87%
87%
21.09
mon
mon
Day

70°F
NE 4 mph
Precip.
59%
59%
Night

61°F
W 4 mph
Precip.
38%
38%
22.09
tue
tue
Day

64°F
NE 2 mph
Precip.
52%
52%
Night

61°F
N 2 mph
Precip.
48%
48%
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 86.4°F. The highest and lowest sea temperatures during the month were 86.9°F and 85.3°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: 09:52
September 16, wednesday
1200

73°F
SW
5 mph
5 mph
1500

68°F
SW
4 mph
4 mph
1800

61°F
W
7 mph
7 mph
2100

61°F
W
6 mph
6 mph
September 17, thursday
0000

61°F
W
4 mph
4 mph
0300

59°F
W
4 mph
4 mph
0600

59°F
W
6 mph
6 mph
0900

72°F
SW
3 mph
3 mph



























