Cozumel
September
Weather in Cozumel for September 2025
Your guide to Cozumel weather in September - trends and predictions
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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6
Dry days
24
Rainy days
0
Snow days
31°/26°
Temperatures
16 km/h
Avg max wind
79 %
Avg humidity
Cozumel in September average weather
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| 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
See the weather trend as well as the moving average line
September weather day by day
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| 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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Important Notice
Our weather forecast for Cozumel in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Cozumel forecast closer to your planned date for the most up-to-date weather information.
Cozumel in September - FAQ
What are the expected maximum and minimum temperatures in Cozumel during September?
During September, expect a variety of temperatures with highs around 31° and lows near 26°, suitable for diverse activities and preferences.
How much rainfall should be expected in Cozumel during September?
Significant rainfall exceeding 224.1 mm is expected in Cozumel during September, occurring over more than 24 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Cozumel during September?
The average wind speed in Cozumel during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.
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
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