Climate averages 1991–2020
Cozumel weather
in July.
A hot, moderately wet month: the 2nd warmest and the 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
July is a hot month in Cozumel: daytime highs average 28.9°C and nights cool to about 27.0°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 82 mm of rain on roughly 14 days, which makes July a moderately wet month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 15 min on an average July day.
The nearest other city in this atlas is Playa del Carmen (20 km away). In July its highs average 30.0°C, 1.1°C warmer than Cozumel, with 80 mm of rain.
Among the 153 cities listed in Mexico, Cozumel ranks joint 71st of 153 for the warmest July highs and 42nd of 153 for the driest July (rainfall, lowest first). The mean July high of those 153 cities is 28.0°C; Cozumel is 1.0°C warmer than that mean.
From July to August, average highs rise by 0.2°C to 29.1°C, and monthly rainfall rises from 82 mm to 107 mm.
The annual picture
July in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Cozumel climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 25.3°C23.4°C | 23.4°C | 64 | 11.6 | 11.011 h |
| February | 25.7°C23.8°C | 23.8°C | 28 | 6.9 | 11.511 h |
| March | 26.3°C24.3°C | 24.3°C | 26 | 5.7 | 12.012 h |
| April | 27.3°C25.3°C | 25.3°C | 29 | 5.7 | 12.613 h |
| May | 28.1°C26.1°C | 26.1°C | 84 | 11.1 | 13.113 h |
| June | 28.5°C26.6°C | 26.6°C | 168 | 17.4 | 13.413 h |
| July, selected | 28.9°C27.0°C | 27.0°C | 82 | 14.1 | 13.213 h |
| August | 29.1°C27.0°C | 27.0°C | 107 | 16.2 | 12.813 h |
| September | 28.8°C26.6°C | 26.6°C | 179 | 21.1 | 12.312 h |
| October | 27.9°C25.9°C | 25.9°C | 215 | 19.7 | 11.712 h |
| November | 26.7°C24.9°C | 24.9°C | 103 | 12.9 | 11.211 h |
| December | 25.9°C24.1°C | 24.1°C | 66 | 11.7 | 10.911 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
July in nearby cities
- Playa del Carmen in JulyMexico · 20 kmHigh 30.0°C · Low 26.1°C · 80 mm rain
- Cancún in JulyMexico · 76 kmHigh 29.7°C · Low 26.4°C · 65 mm rain
- Chetumal in JulyMexico · 262 kmHigh 30.8°C · Low 24.9°C · 120 mm rain
- Kanasín in JulyMexico · 276 kmHigh 34.6°C · Low 24.2°C · 85 mm rain
- Mérida in JulyMexico · 284 kmHigh 34.2°C · Low 24.3°C · 85 mm rain
- Campeche in JulyMexico · 380 kmHigh 33.6°C · Low 25.2°C · 101 mm rain
- Pinar del Río in JulyCuba · 398 kmHigh 31.9°C · Low 24.2°C · 126 mm rain
- Belmopan in JulyBelize · 409 kmHigh 30.1°C · Low 23.6°C · 126 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Cozumel) is explained once on the Cozumel year overview and on the Sources, method and limits page.