Mexico Weather in September

As the summer sun gently bows to make way for the vibrant colors of fall, Mexico beckons travelers to discover its enchanting September climate. With the sweltering heat of August beginning to wane, the weather in Mexico in September offers a delightful mix of balmy days and refreshing evenings. Although it's not part of the best time to visit Mexico, September can still be a great time to be in the country, depending on the region.

What is the weather like in Mexico in September?

The weather in Mexico in September is generally pleasant and inviting, as it marks the transition from the summer heat to a more comfortable climate. The temperature varies across regions, with coastal areas experiencing warm and humid conditions, while inland regions offer milder temperatures.

September in Mexico heralds the arrival of autumn, bringing moderate temperatures and the promise of clearer skies. The month falls within the rainy season, so sporadic showers can be expected in some areas. Overall, September presents an excellent opportunity to explore Mexico's beauty with its pleasant weather and fewer crowds.

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Sunrise over rural mountain town in Oaxaca Mexico © OverlandTheAmericas/Shutterstock

Is Mexico warm in September?

September can be a wonderful time to visit Mexico, particularly for travellers who prefer a quieter experience. With the summer holiday crowds dispersing, you can savour more popular destinations without the throngs of tourists.

However, along the beaches, September to mid-October is hurricane season – you’ll usually get wet weather, choppy seas and mosquitoes if not a full-on tropical storm.

Prices may drop during the “shoulder” seasons – mid-September to early November and late April to early June – and the best deals are usually available during the low season (November to March, excluding Christmas and New Year).

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Is September a good time to visit Mexico?

The weather in Mexico in September is less hot, but also rainy. In popular coastal destinations like Cancun, Puerto Vallarta, and Riviera Maya, the average rainfall can range from 100mm to 200mm (4 to 8 inches) during September. These regions often have brief but intense rain showers, typically followed by sunny spells.

Inland cities such as Mexico City and Guadalajara tend to receive lower rainfall amounts, averaging around 50mm to 100mm (2 to 4 inches) during September.

Mexico City seems to have it all - over 50 museums, a beautiful historic city centre, an extensive city park with a majestic castle, upscale neighbourhoods and mouth-watering cuisine. This tailor-made trip to authentic and unique Mexico City shows you the best of this mega city.

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Ruins on San Gervasio Island, Cozumel, Mexico © Shutterstock

Average rainfall in Mexico in September

In September, the average rainfall in Mexico varies depending on the region. Coastal areas might still experience sporadic showers, but the rainfall tends to be less intense compared to the peak of the rainy season.

The average rainfall in coastal regions like Cancun and Puerto Vallarta hovers around 100mm to 150mm (4 to 6 inches) during October.

Inland cities, such as Mexico City and Guadalajara, experience lower rainfall amounts, averaging around 50mm to 100mm (2 to 4 inches) during the month. The reduced rainfall creates more inviting weather for outdoor explorations and festivities than the rainy season.

Enjoy our tailor-made whirlwind tour from Mexico City to the Yucatán, taking in the museums, churches and colonial plazas of Mexico's vibrant capital. Then relax on Playa del Carmen's Caribbean beaches before you take off to explore some of the country's most amazing archaeological treasures.

Festivals and events in Mexico in September

Everywhere, from the remotest Indigenous village to the most sophisticated city suburb, devotes at least one day annually to partying in Mexico.

Usually, it’s in honour of the local saint’s day, but many fiestas have pre-Christian origins, and any excuse – from harvest celebrations to the coming of the rains – will do. Here are the best festivals and events in Mexico in September.

Independence Day (Sept 16). While Easter and Carnaval are popular, this one is more official, marking the historic day in 1810 when Manuel Hidalgo y Costilla issued the Grito (Cry of Independence) from his parish church in Dolores, now Dolores Hidalgo, Guanajuato, which is still the centre of commemoration. You’ll also find the day marked in the capital with the mass recitation of the Grito in the Zócalo, followed by fireworks, music and dancing.
Festival Internacional de Santa Lucía (end of Sept and beginning of Oct). Formerly the Festival Cultural of Monterrey’s Barrio Antiguo, showcasing local rock bands and other eclectic musicians, this festival has been reborn, having outgrown the confines of the Barrio Antiguo to become a citywide event. It’s now Mexico’s third-biggest music festival.

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