Tulum weather in September
September in Tulum: sweltering, rainy, with clean air — an excellent time to visit.
#8 of 12 months in Tulum · #277 of 604 destinations to visit in September · comfort 82/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Tulum climate normals — September
| Daytime high | 30°C / 87°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 26°C / 79°F | |
| Feels like (high) | 36°C / 97°F | |
| Rainfall | 135 mm / 5.3 in | 🌧 rainy |
| Rainy days | 21 days | |
| Humidity | 82% | 💦 very humid |
| Dew point | 24°C / 76°F | |
| Sunshine | 10.7 h/day | |
| Daylight | 12.3 h | |
| Wind | 15 km/h / 10 mph | |
| Air quality (US AQI) | 26 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Tulum?
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Tulum in September — FAQ
- Is September a good time to visit Tulum?
- September in Tulum: sweltering, rainy, with clean air — an excellent time to visit. It ranks #8 of 12 months for Tulum on SeasonMap's comfort score (82/100).
- What is the weather like in Tulum in September?
- In September, Tulum averages a daily high of 30.3°C and a low of 26.2°C, with about 135.1 mm of rain over roughly 21.4 rainy days.
- What is the air quality in Tulum in September?
- Tulum has a mean US Air Quality Index of about 26 in September.