Weather in Cancún in September
Cancún, Mexico averages a high of 29.5°C (85.1°F) and low of 25.8°C (78.4°F) in September, with 22 rain days and 10.4 hours of daily sunshine. Travel score: 67.5/100 (Good). The best time to visit Cancún is April.
High
30°C85°F
Low
26°C78°F
🌧️
22
rain days
☀️
10.4
hrs/day sunshine
💧
83%
humidity
68— Good
September in Cancún is hot and very rainy — pack an umbrella and enjoy indoor attractions too.
What are the average temperatures in Cancún?
How much does it rain in Cancún in September?
Cancún receives an average of 195.8mm of rainfall across 22 rainy days in September. The annual total is 1172.6mm.
What should I pack for Cancún in September?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
👕
Light layers and t-shirts
Warm weather around 30°C
🧥
Waterproof jacket
Frequent rain expected (22 rainy days)
☔
Umbrella
Essential for the rainy season
👢
Waterproof shoes
Keep your feet dry in wet conditions
🧴
Sunscreen SPF 30+
10 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
Traveling to Mexico in September?
Don't let a public holiday surprise you — restaurants, shops, and attractions may be closed.
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Data based on 1994–2024 averages · Last updated: 2024-12-31