Cozumel weather in August
August in Cozumel: hot, rainy, with clean air — an excellent time to visit.
#8 of 12 months in Cozumel · #395 of 897 destinations to visit in August · comfort 83/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Cozumel in August
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Cozumel climate normals — August
| Daytime high | 30°C / 85°F | 🥵 hot |
|---|---|---|
| Nighttime low | 28°C / 82°F | |
| Rainfall | 119 mm / 4.7 in | 🌧 rainy |
| Rainy days | 16 days | |
| Humidity | 79% | 💦 very humid |
| Dew point | 25°C / 76°F | |
| Sunshine | 11.3 h/day | |
| Daylight | 12.8 h | |
| Wind | 23 km/h / 14 mph | |
| Air quality (US AQI) | 46 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Cozumel in August — FAQ
- Is August a good time to visit Cozumel?
- August in Cozumel: hot, rainy, with clean air — an excellent time to visit. It ranks #8 of 12 months for Cozumel on SeasonMap's comfort score (83/100).
- What is the weather like in Cozumel in August?
- In August, Cozumel averages a daily high of 29.6°C and a low of 27.5°C, with about 118.6 mm of rain over roughly 16 rainy days.
- What is the air quality in Cozumel in August?
- Cozumel has a mean US Air Quality Index of about 46 in August.