14.09
mon
mon
Day
84°F
W 11 mph
Precip.
29%
29%
Night
82°F
SW 9 mph
Precip.
21%
21%
15.09
tue
tue
Day
88°F
SW 9 mph
Precip.
11%
11%
Night
82°F
W 10 mph
Precip.
9%
9%
16.09
wed
wed
Day
88°F
SW 7 mph
Precip.
11%
11%
Night
82°F
SW 10 mph
Precip.
25%
25%
17.09
thu
thu
Day
88°F
SW 9 mph
Precip.
12%
12%
Night
81°F
NW 5 mph
Precip.
8%
8%
18.09
fri
fri
Day
84°F
NW 3 mph
Precip.
20%
20%
Night
82°F
W 7 mph
Precip.
11%
11%
19.09
sat
sat
Day
84°F
W 6 mph
Precip.
28%
28%
Night
81°F
SW 9 mph
Precip.
36%
36%
20.09
sun
sun
Day
84°F
SW 6 mph
Precip.
4%
4%
Night
81°F
SW 7 mph
Precip.
9%
9%
21.09
mon
mon
Day
82°F
W 3 mph
Precip.
26%
26%
Night
81°F
W 8 mph
Precip.
21%
21%
22.09
tue
tue
Day
86°F
NW 4 mph
Precip.
20%
20%
Night
82°F
W 9 mph
Precip.
15%
15%
23.09
wed
wed
Day
84°F
SW 7 mph
Precip.
57%
57%
Night
82°F
SW 11 mph
Precip.
33%
33%
24.09
thu
thu
Day
84°F
NW 1 mph
Precip.
53%
53%
Night
79°F
W 6 mph
Precip.
82%
82%
25.09
fri
fri
Day
81°F
NW 6 mph
Precip.
66%
66%
Night
81°F
W 7 mph
Precip.
24%
24%
26.09
sat
sat
Day
81°F
W 6 mph
Precip.
75%
75%
Night
79°F
W 8 mph
Precip.
41%
41%
27.09
sun
sun
Day
82°F
W 7 mph
Precip.
71%
71%
Night
79°F
W 9 mph
Precip.
70%
70%
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 85.9°F. The highest and lowest sea temperatures during the month were 86.7°F and 84.9°F.
Air temperature in Cozumel, °F
Precipitation total in Cozumel, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Cozumel
Cozumel on a weather map
Places in Mexico:
Name
°F
24 Hours Forecast
Cozumel
Local time: 10:17
September 14, monday
1200
84°F
W
11 mph
11 mph
1500
86°F
SW
14 mph
14 mph
1800
86°F
SW
12 mph
12 mph
2100
82°F
W
10 mph
10 mph
September 15, tuesday
0000
82°F
SW
9 mph
9 mph
0300
82°F
W
8 mph
8 mph
0600
82°F
W
7 mph
7 mph
0900
86°F
W
9 mph
9 mph
