Cozumel, Mexico: Annual Weather Averages
August is the hottest month in Cozumel with an average temperature of 82°F (28°C) and the coldest is January at 75°F (24°C) with the most daily sunshine hours at 11 in May. The wettest month is September with an average of 247mm of rain. The best month to swim in the sea is in August when the average sea temperature is 84°F (29°C).
Average Temperature: Cozumel
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| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| °C | 24 | 25 | 25 | 27 | 27 | 27 | 27 | 28 | 27 | 27 | 25 | 24 |
| °F | 75 | 77 | 77 | 81 | 81 | 81 | 81 | 82 | 81 | 81 | 77 | 75 |
Average High/Low Temperature: Cozumel
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| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High °C | 28 | 29 | 29 | 31 | 30 | 31 | 31 | 32 | 31 | 30 | 28 | 28 |
| High °F | 82 | 84 | 84 | 88 | 86 | 88 | 88 | 90 | 88 | 86 | 82 | 82 |
| Low °C | 20 | 20 | 20 | 22 | 23 | 23 | 23 | 23 | 23 | 23 | 22 | 20 |
| Low °F | 68 | 68 | 68 | 72 | 73 | 73 | 73 | 73 | 73 | 73 | 72 | 68 |
Average Rainfall: Cozumel
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| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| mm | 49 | 13 | 30 | 31 | 12 | 70 | 192 | 162 | 247 | 182 | 91 | 36 |
| Days | 5 | 3 | 3 | 2 | 4 | 6 | 4 | 5 | 7 | 8 | 6 | 5 |
Average Daily Sunshine Hours: Cozumel
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| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hours | 7 | 8 | 10 | 10 | 11 | 10 | 10 | 10 | 9 | 8 | 8 | 8 |
Average Sea Temperature: Cozumel
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| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| °C | 27 | 26 | 26 | 27 | 28 | 28 | 28 | 29 | 29 | 29 | 28 | 27 |
| °F | 81 | 79 | 79 | 81 | 82 | 82 | 82 | 84 | 84 | 84 | 82 | 81 |