Monthly weather forecast and climate
Cozumel, Mexico

Palm trees and clear blue waters on Chen Rio white sandy beach in Cozumel, Mexico
Palm trees and clear blue waters on Chen Rio white sandy beach in Cozumel, Mexico

The best time to visit Cozumel

The best months for a swim in Cozumel, Mexico, are March and April, with a perfect temperature - varying between 25°C (77°F) and 29°C (84.2°F), and scarce rainfall.

Weather in January

January, like December, in Cozumel, Mexico, is a moderately hot winter month, with temperature in the range of an average high of 28.6°C (83.5°F) and an average low of 19.4°C (66.9°F). The coldest months are January and December, with an average high-temperature of 28.6°C (83.5°F). The average heat index is estimated at a tropical 34°C (93.2°F). Weather in January »

Weather in February

February, the last month of the winter, in Cozumel, is another warm month, with average temperature varying between 19.4°C (66.9°F) and 29.1°C (84.4°F). In February, the average high-temperature is essentially the same as in January - a still warm 29.1°C (84.4°F). Weather in February »

Weather in March

March, the first month of the spring, in Cozumel, is a tropical month, with temperature in the range of an average high of 30.9°C (87.6°F) and an average low of 20.7°C (69.3°F). An excellent water temperature of 26°C (78.8°F) and only 4 rainfall days, with 32.2mm (1.27") of accumulated rainfall, makes March a prime for swimming and other water activities. Weather in March »

Weather in April

April, the same as March, in Cozumel, Mexico, is another hot spring month, with average temperature ranging between max 32°C (89.6°F) and min 21.8°C (71.2°F). The ideal sea water temperature of 27°C (80.6°F) and only 3.7 rainfall days, with 44.8mm (1.76") of accumulated rainfall, makes April the best time for swimming and other water activities. Weather in April »

Weather in May

The last month of the spring, May, is another tropical month in Cozumel, Mexico, with average temperature varying between 22.9°C (73.2°F) and 32.7°C (90.9°F). In May, the average high-temperature is almost the same as in April - a still hot 32.7°C (90.9°F). Weather in May »

Weather in June

The first month of the summer, June, is still a tropical month in Cozumel, Mexico, with average temperature varying between 23.8°C (74.8°F) and 32.4°C (90.3°F). In June, the average high-temperature is relatively the same as in May - a still hot 32.4°C (90.3°F). Weather in June »

Weather in July

July, the same as June, in Cozumel, Mexico, is another tropical summer month, with average temperature ranging between min 23.5°C (74.3°F) and max 32.6°C (90.7°F). In Cozumel, Mexico, the average high-temperature is essentially the same as in June - a still tropical 32.6°C (90.7°F). Weather in July »

Weather in August

The last month of the summer, August, is another hot month in Cozumel, Mexico, with average temperature ranging between max 33°C (91.4°F) and min 23.5°C (74.3°F). August is the warmest month, with an average high-temperature of 33°C (91.4°F) and an average low-temperature of 23.5°C (74.3°F). In August, the average heat index is estimated at a life-threatening hot 50.2°C (122.4°F). Weather in August »

Weather in September

September, the first month of the autumn, in Cozumel, is also a hot month, with average temperature fluctuating between 23.6°C (74.5°F) and 31.9°C (89.4°F). In Cozumel, the average high-temperature is practically the same as in August - a still hot 31.9°C (89.4°F). Weather in September »

Weather in October

October, the same as September, in Cozumel, Mexico, is another tropical autumn month, with average temperature fluctuating between 23.1°C (73.6°F) and 30.7°C (87.3°F). In October, the average high-temperature is almost the same as in September - a still tropical 30.7°C (87.3°F). Weather in October »

Weather in November

November, the last month of the autumn, in Cozumel, is also a moderately hot month, with temperature in the range of an average low of 21.7°C (71.1°F) and an average high of 29.7°C (85.5°F). In Cozumel, the average high-temperature is relatively the same as in October - a moderately hot 29.7°C (85.5°F). Weather in November »

Weather in December

The first month of the winter, December, is also a moderately hot month in Cozumel, Mexico, with average temperature fluctuating between 20.3°C (68.5°F) and 28.6°C (83.5°F). The coldest months are January and December, with an average high-temperature of 28.6°C (83.5°F). The average heat index is estimated at a hot 34.2°C (93.6°F). Weather in December »
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FAQ

What are the coldest months in Cozumel?

January and December, with an average high-temperature of 28.6°C (83.5°F), are the coldest months.

How many days does it rain in Cozumel?

Throughout the year, in Cozumel, Mexico, there are 119.9 rainfall days, and 1489.9mm (58.66") of precipitation is accumulated.

What is the month with the lowest UV index in Cozumel?

Months with the lowest UV index in Cozumel, Mexico, are January and December, with an average maximum UV index of 7.

When is the sea coldest in Cozumel?

Months with the coldest seawater in Cozumel are February and March, with an average sea temperature of 26°C (78.8°F).

What is the least humid month in Cozumel?

Months with the lowest humidity are March and April, with an average relative humidity of 79%.

What is the driest month in Cozumel?

The month with the least rainfall is March when the rain falls for 4 days and typically collects 32.2mm (1.27") of precipitation.

What month has the most sunshine in Cozumel?

With an average of 8.6h of sunshine, April has the most sunshine of the year in Cozumel.

What are the months with the highest UV index in Cozumel?

Months with the highest UV index in Cozumel are April through August, with an average maximum UV index of 12.

When are the longest days in Cozumel?

The month with the longest days in Cozumel, Mexico, is June, with an average of 13.4h of daylight.

When is the sea warmest in Cozumel?

July through October, with an average sea temperature of 29°C (84.2°F), are months with the warmest seawater.

What is the warmest month in Cozumel?

August is the warmest month in Cozumel, Mexico, with an average high-temperature of 33°C (91.4°F) and an average low-temperature of 23.5°C (74.3°F).

What is the most humid month in Cozumel?

September is the most humid month in Cozumel, with an average relative humidity of 87%.

What is the month with the least sunshine in Cozumel?

Months with the least sunshine in Cozumel, Mexico, are September and November, with an average of 6.1h of sunshine.

What is the rainiest month in Cozumel?

October is the month with the most rainfall in Cozumel. Rain falls for 15.7 days and accumulates 242.5mm (9.55") of precipitation.

What is the month with the shortest days in Cozumel?

With an average of 10.9h of daylight, December has the shortest days of the year.

Average temperature
Cozumel, Mexico

Average temperature - Cozumel, Mexico

The warmest month (with the highest average high temperature) is August (33°C).
Months with the lowest average high temperature are January and December (28.6°C).

The month with the highest average low temperature is June (23.8°C).
The coldest months (with the lowest average low temperature) are January and February (19.4°C).

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Average humidity
Cozumel, Mexico

Average humidity - Cozumel, Mexico

The month with the highest relative humidity is September (87%).
Months with the lowest relative humidity are March and April (79%).

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Average rainfall
Cozumel, Mexico

Average rainfall - Cozumel, Mexico

The wettest month (with the highest rainfall) is October (242.5mm).
The driest month (with the least rainfall) is March (32.2mm).

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Average rainfall days
Cozumel, Mexico

Average rainfall days - Cozumel, Mexico

The month with the highest number of rainy days is October (15.7 days).
The month with the least rainy days is April (3.7 days).

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Average sea temperature
Cozumel, Mexico

Average sea temperature - Cozumel, Mexico

The best months for swimming (with the highest average sea temperature) are July, August, September and October (29°C).
The coldest months (with the lowest average sea temperature) are February and March (26°C).

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Average daylight / Average sunshine
Cozumel, Mexico

Average daylight / Average sunshine - Cozumel, Mexico

The month with the longest days is June (Average daylight: 13.4h).
The month with the shortest days is December (Average daylight: 10.9h).

The month with the most sunshine is April (Average sunshine: 8.6h).
Months with the least sunshine are September and November (Average sunshine: 6.1).

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Average UV index
Cozumel, Mexico

Average UV index - Cozumel, Mexico

Months with the highest UV index are April, May, June, July and August (UV index 12).
Months with the lowest UV index are January and December (UV index 7).

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