Cancún weather in August
August in Cancún: sweltering, soaked, with clean air — an excellent time to visit.
#12 of 12 months in Cancún · #286 of 604 destinations to visit in August · comfort 80/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Cancún climate normals — August
| Daytime high | 31°C / 87°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 27°C / 80°F | |
| Feels like (high) | 36°C / 97°F | |
| Rainfall | 152 mm / 6 in | ⛈ soaked |
| Rainy days | 20 days | |
| Humidity | 80% | 💦 very humid |
| Dew point | 25°C / 76°F | |
| Sunshine | 11.2 h/day | |
| Daylight | 12.8 h | |
| Wind | 17 km/h / 10 mph | |
| Air quality (US AQI) | 48 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Cancún in August — FAQ
- Is August a good time to visit Cancún?
- August in Cancún: sweltering, soaked, with clean air — an excellent time to visit. It ranks #12 of 12 months for Cancún on SeasonMap's comfort score (80/100).
- What is the weather like in Cancún in August?
- In August, Cancún averages a daily high of 30.5°C and a low of 26.9°C, with about 151.6 mm of rain over roughly 19.6 rainy days.
- What is the air quality in Cancún in August?
- Cancún has a mean US Air Quality Index of about 48 in August.