Cancún · AutumnMonth summary
Cancún weather in September
✅ Good
🌡️ Temperature min / max
25°C – 31°C
🌧 Rainy days
75% of days
☀️ Sunshine
11.1h per day on average
🌊 🌊 Season
Autumn
⭐ ⭐ Weather score
7.0/10
📅 📅 Best month
March (8.6/10)
Quick decision
Should you visit Cancún in September?
✅ Good
✅ Yes if: you're willing to accept showers in exchange for lower prices and fewer tourists.
❌ No if: you're planning 100% outdoor activities — rain is frequent.
Our take: Cancún in September: 31°C and 11.1h of sunshine. Decent, but not the peak.
By trip type
Cancún in September by trip type
- 🏙️ 🏙️ City break / culture : ✅ Good
- 🚶 🚶 Outdoor activities : ⚠️ Possible
- 🏖️ Beach / swimming : ⚠️ Possible
- 💰 💰 Budget : ✅ Low season
Local context
What to expect in September
🎯 Water at 29°C and lively beaches — September is peak swimming season in Cancún Autumn in Cancún is often underrated: 31°C, golden light and declining crowds. An interesting window. With 75% of rainy days, always have indoor alternatives planned. Not the best window, but acceptable if dates are constrained. March (8.6/10) is significantly better if possible.
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All months for Cancún
Annual table
Month-by-month comparison
| Month | Min °C | Max °C | Rain % | Precip mm | Sun h/d | Score |
|---|---|---|---|---|---|---|
| 🌤️ January | 22°C | 26°C | 45% | 2.6 | 9.9h | 7.7/10 |
| 🌤️ February | 23°C | 27°C | 37% | 1.7 | 10.2h | 8.0/10 |
| 🌤️ March | 23°C | 28°C | 30% | 1.2 | 11.2h | 8.6/10 |
| 🌤️ April | 24°C | 29°C | 25% | 1.3 | 11.7h | 8.5/10 |
| 🌤️ May | 25°C | 30°C | 44% | 2.8 | 12.0h | 7.7/10 |
| ⛅ June | 26°C | 30°C | 64% | 6.5 | 12.1h | 7.3/10 |
| 🌤️ July | 26°C | 31°C | 53% | 3.1 | 12.0h | 7.4/10 |
| ⛅ August | 26°C | 31°C | 66% | 4.3 | 11.8h | 7.2/10 |
| ⛅ September | 25°C | 31°C | 75% | 6.0 | 11.1h | 7.0/10 |
| ⛅ October | 24°C | 30°C | 70% | 5.8 | 10.8h | 7.1/10 |
| 🌤️ November | 23°C | 28°C | 52% | 3.6 | 10.2h | 7.7/10 |
| 🌤️ December | 23°C | 27°C | 45% | 2.6 | 9.9h | 7.8/10 |
Ideal
Fair
Challenging climate
◀ Current month · Source Open-Meteo · 10 years
📊 Data source
Data based on 10 years of ERA5 records via Open-Meteo, with ECMWF seasonal adjustment. In September, Cancún averages 31°C, 75% rainy days and 11.1h of sunshine per day. Overall weather score: 7.0/10.
See methodology →
Comparison
September vs March (best month)
The best month is March (score 8.6/10). Difference:
- 🌡️ Max temperature : -3°C
- 🌧 Rainy days : -45%
- ☀️ Sunshine : +0.1h/day
FAQ
FAQ — Cancún in September
Is September a good time to visit Cancún?
September is an acceptable time for Cancún (score 7.0/10). Conditions are decent but not optimal — consider March (8.6/10) if possible.
Does it rain a lot in Cancún in September?
Yes, 75% of days see rain in September. Plan some indoor activities as backup.
Accommodation
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