Cancún · AutumnMonth summary
Cancún weather in September
✅ Good
🌡️ Temperature min / max
77°F – 88°F
🌧 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: 88°F 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
Autumn in Cancún is often underrated: 31°F, 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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Annual table
Month-by-month comparison
| Month | Min °F | Max °F | Rain % | Precip in | Sun h/d | Score |
|---|---|---|---|---|---|---|
| 🌤️ January | 72°F | 79°F | 45% | 0.1in | 9.9h | 7.7/10 |
| 🌤️ February | 73°F | 81°F | 37% | 0.1in | 10.2h | 8.0/10 |
| 🌤️ March | 73°F | 82°F | 30% | 0.0in | 11.2h | 8.6/10 |
| 🌤️ April | 75°F | 84°F | 25% | 0.1in | 11.7h | 8.5/10 |
| 🌤️ May | 77°F | 86°F | 44% | 0.1in | 12.0h | 7.7/10 |
| ⛅ June | 79°F | 86°F | 64% | 0.3in | 12.1h | 7.3/10 |
| 🌤️ July | 79°F | 88°F | 53% | 0.1in | 12.0h | 7.4/10 |
| ⛅ August | 79°F | 88°F | 66% | 0.2in | 11.8h | 7.2/10 |
| ⛅ September | 77°F | 88°F | 75% | 0.2in | 11.1h | 7.0/10 |
| ⛅ October | 75°F | 86°F | 70% | 0.2in | 10.8h | 7.1/10 |
| 🌤️ November | 73°F | 82°F | 52% | 0.1in | 10.2h | 7.7/10 |
| 🌤️ December | 73°F | 81°F | 45% | 0.1in | 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 88°F, 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°F
- 🌧 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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Activities & tours
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