Weather in Mexico for September 2025
In general, the average temperature in Mexico at the beginning of September is 31 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 30.1 °C by the end of September.
Mexico experiences an exceptionally high level of rainfall in September, with more than 20 rainy days on average.
Is September a good time to visit Mexico? check out the best time to travel to Mexico page.
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Mexico in September average weather
| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  30° | 2  31° | 3 31° | 4  31° | 5 32° | 6 32° | 7 30° |
| 8  30° | 9 31° | 10 31° | 11 33° | 12  32° | 13  32° | 14  32° |
| 15 32° | 16 32° | 17 31° | 18 31° | 19 31° | 20 31° | 21 30° |
| 22 32° | 23  31° | 24 30° | 25 28° | 26 32° | 27 30° | 28 31° |
| 29 30° | 30 30° |
You can click on date
Temperatures trend during September in Mexico
September weather day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Fog | 30° /26° | 3.8 mm | 7 | |
| 2 Sept. | Patchy rain possible | 31° /26° | 4.7 mm | 7 | |
| 3 Sept. | Patchy rain possible | 31° /26° | 6.4 mm | 7 | |
| 4 Sept. | Moderate or heavy rain shower | 31° /26° | 5.2 mm | 7 | |
| 5 Sept. | Patchy rain possible | 32° /26° | 0.5 mm | 8 | |
| 6 Sept. | Fog | 32° /26° | 1.4 mm | 7 | |
| 7 Sept. | Patchy rain possible | 30° /26° | 3 mm | 7 | |
| 8 Sept. | Patchy light rain with thunder | 30° /26° | 6.1 mm | 7 | |
| 9 Sept. | Patchy rain possible | 31° /26° | 3.5 mm | 7 | |
| 10 Sept. | Light rain shower | 31° /26° | 3.5 mm | 7 | |
| 11 Sept. | Patchy rain possible | 33° /26° | 0.3 mm | 7 | |
| 12 Sept. | Cloudy | 32° /26° | 0 mm | 7 | |
| 13 Sept. | Overcast | 32° /27° | 0 mm | 7 | |
| 14 Sept. | Partly cloudy | 32° /26° | 0.3 mm | 8 | |
| 15 Sept. | Partly cloudy | 32° /26° | 0.1 mm | 8 | |
| 16 Sept. | Patchy rain possible | 32° /26° | 0.4 mm | 7 | |
| 17 Sept. | Patchy rain possible | 31° /26° | 29.1 mm | 7 | |
| 18 Sept. | Partly cloudy | 31° /26° | 2 mm | 8 | |
| 19 Sept. | Partly cloudy | 31° /26° | 0 mm | 8 | |
| 20 Sept. | Patchy rain possible | 31° /26° | 18.5 mm | 7 | |
| 21 Sept. | Patchy rain possible | 30° /26° | 9.6 mm | 7 | |
| 22 Sept. | Moderate rain at times | 32° /26° | 2.8 mm | 7 | |
| 23 Sept. | Patchy light drizzle | 31° /26° | 0.7 mm | 7 | |
| 24 Sept. | Patchy light rain with thunder | 30° /25° | 14.6 mm | 7 | |
| 25 Sept. | Moderate or heavy rain shower | 28° /24° | 292.8 mm | 7 | |
| 26 Sept. | Moderate or heavy rain shower | 32° /26° | 28.4 mm | 7 | |
| 27 Sept. | Moderate or heavy rain shower | 30° /25° | 23 mm | 7 | |
| 28 Sept. | Light rain shower | 31° /26° | 3.7 mm | 8 | |
| 29 Sept. | Light rain shower | 30° /26° | 5.9 mm | 8 | |
| 30 Sept. | Light rain shower | 30° /26° | 18.2 mm | 7 | |
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Guide for Mexico in September
In September, Mexico experiences a transition from the rainy season to the drier months, resulting in varied weather conditions across the country.
At the beginning of the month, coastal areas such as Cancun and Puerto Vallarta typically see warm and humid conditions with temperatures averaging around 28° during the day and 24° at night. However, there is a higher chance of rainfall and occasional thunderstorms during this time.
Towards the end of September, the weather in Mexico begins to shift as the rainy season starts to taper off. In Mexico City, the temperatures tend to be milder, with daytime highs averaging around 22° and cooler evenings around 14°.
The capital city also experiences less rainfall towards the end of the month, making it an ideal time to explore the city and its attractions.
In general, September marks the transition from the wet season to the dry season in Mexico, offering travelers the opportunity to enjoy the country's diverse landscapes and cultural experiences.
However, it's important to stay updated on local weather forecasts and potential tropical storms, especially in coastal regions.
Mexico in September - FAQ
What to pack to Mexico in September?
As you prepare for your trip to Mexico 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 Mexico, 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 Mexico
UV exposure in Mexico during September
Quick links
Where is Mexico?Get accurate weather forecasts for Mexico, located at latitude 21.174 and longitude -86.847. Stay updated with localized weather information tailored for Mexico.