Weather in Cozumel for September 2025
In general, the average temperature in Cozumel at the beginning of September is 30.9 °C. As the month progressed, temperatures tended to slightly decrease, reaching an average of 30.6 °C by the end of September.
Cozumel experiences an exceptionally high level of rainfall in September, with more than 20 rainy days on average.
Is September a good time to visit Cozumel? check out the best time to travel to Cozumel page.
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Cozumel in September average weather
Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
---|---|---|---|---|---|---|
1 31° | 2 30° | 3 30° | 4 31° | 5 31° | 6 32° | 7 31° |
8 30° | 9 30° | 10 31° | 11 32° | 12 31° | 13 31° | 14 31° |
15 32° | 16 33° | 17 30° | 18 32° | 19 31° | 20 31° | 21 31° |
22 31° | 23 30° | 24 31° | 25 28° | 26 32° | 27 31° | 28 31° |
29 31° | 30 30° |
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Temperatures trend during September in Cozumel
September weather day by day
Date | Weather | Temperatures | Rain | UV | More |
---|---|---|---|---|---|
1 Sept. | Patchy rain possible | 31° /26° | 4.3 mm | 7 | |
2 Sept. | Patchy rain possible | 30° /26° | 3 mm | 7 | |
3 Sept. | Patchy rain possible | 30° /26° | 8.1 mm | 7 | |
4 Sept. | Patchy rain possible | 31° /27° | 1.8 mm | 7 | |
5 Sept. | Patchy rain possible | 31° /27° | 2.9 mm | 8 | |
6 Sept. | Thundery outbreaks possible | 32° /27° | 3 mm | 7 | |
7 Sept. | Fog | 31° /27° | 3.1 mm | 7 | |
8 Sept. | Patchy light rain with thunder | 30° /26° | 7.2 mm | 7 | |
9 Sept. | Moderate or heavy rain with thunder | 30° /27° | 20.6 mm | 7 | |
10 Sept. | Patchy rain possible | 31° /27° | 3.9 mm | 7 | |
11 Sept. | Patchy rain possible | 32° /27° | 0.5 mm | 7 | |
12 Sept. | Thundery outbreaks possible | 31° /27° | 2.3 mm | 7 | |
13 Sept. | Cloudy | 31° /27° | 0 mm | 7 | |
14 Sept. | Partly cloudy | 31° /27° | 0.3 mm | 8 | |
15 Sept. | Partly cloudy | 32° /27° | 0.4 mm | 8 | |
16 Sept. | Mist | 33° /27° | 0.3 mm | 7 | |
17 Sept. | Fog | 30° /27° | 4.7 mm | 7 | |
18 Sept. | Partly cloudy | 32° /27° | 7.1 mm | 8 | |
19 Sept. | Moderate or heavy rain with thunder | 31° /27° | 14.7 mm | 7 | |
20 Sept. | Patchy rain possible | 31° /27° | 40.7 mm | 7 | |
21 Sept. | Patchy rain possible | 31° /27° | 5.2 mm | 7 | |
22 Sept. | Patchy rain possible | 31° /27° | 2.5 mm | 7 | |
23 Sept. | Patchy rain possible | 30° /26° | 2.7 mm | 7 | |
24 Sept. | Moderate rain at times | 31° /25° | 24.9 mm | 7 | |
25 Sept. | Light rain shower | 28° /24° | 110.8 mm | 6 | |
26 Sept. | Patchy light rain with thunder | 32° /27° | 20.2 mm | 7 | |
27 Sept. | Torrential rain shower | 31° /27° | 26.6 mm | 7 | |
28 Sept. | Light rain shower | 31° /27° | 7.9 mm | 7 | |
29 Sept. | Moderate or heavy rain shower | 31° /27° | 16.1 mm | 8 | |
30 Sept. | Moderate or heavy rain shower | 30° /27° | 47 mm | 7 | |
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Cozumel in September - FAQ
What to pack to Cozumel in September?
As you prepare for your trip to Cozumel in September, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Cozumel, during September, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Lightweight Clothing: T-shirts, blouses, shorts, skirts
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Sandals/Flip-flops: Comfortable for warm climates
- Accessories
- Sunglasses: For sun protection
- Sun Hats: Wide-brimmed hats for sun protection in warm weather
- Umbrellas/Raincoats: For rainy days
- Personal Items
- Sunscreen: High SPF for sunny destinations
- Lip Balm with SPF: To protect against chapped lips
- Insect Repellent: For destinations with mosquitos or other insects
September rainfall patterns in Cozumel
UV exposure in Cozumel during September
Quick links
Get accurate weather forecasts for Cozumel, located at latitude 20.5 and longitude -86.943. Stay updated with localized weather information tailored for Cozumel.