Cozumel weather in May
May in Cozumel: warm, a little rain, with clean air — an excellent time to visit.
#5 of 12 months in Cozumel · #340 of 897 destinations to visit in May · comfort 85/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Cozumel in May
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Cozumel climate normals — May
| Daytime high | 29°C / 83°F | 🌤 warm |
|---|---|---|
| Nighttime low | 27°C / 80°F | |
| Rainfall | 73 mm / 2.9 in | 🌦 some rain |
| Rainy days | 13 days | |
| Humidity | 76% | 💦 very humid |
| Dew point | 23°C / 73°F | |
| Sunshine | 11.5 h/day | |
| Daylight | 13.1 h | |
| Wind | 26 km/h / 16 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 May — FAQ
- Is May a good time to visit Cozumel?
- May in Cozumel: warm, a little rain, with clean air — an excellent time to visit. It ranks #5 of 12 months for Cozumel on SeasonMap's comfort score (85/100).
- What is the weather like in Cozumel in May?
- In May, Cozumel averages a daily high of 28.6°C and a low of 26.6°C, with about 73.3 mm of rain over roughly 12.6 rainy days.
- What is the air quality in Cozumel in May?
- Cozumel has a mean US Air Quality Index of about 46 in May.