Cozumel
Mexico
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Cozumel, Mexico

A small blue boat, palm trees, and clear blue waters on Chen Rio white sandy beach in Cozumel, Mexico, with a small island
A small blue boat, palm trees, and clear blue waters on Chen Rio white sandy beach in Cozumel, Mexico, with a small island
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.
January, the same as December, is a moderately hot winter month in Cozumel, Mexico, with temperature in the range of an average low of 19.4°C (66.9°F) and an average high of 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 calculated to a tropical 34°C (93.2°F). Weather in January »

The last month of the winter, February, is also a moderately hot month in Cozumel, Mexico, with average temperature ranging between min 19.4°C (66.9°F) and max 29.1°C (84.4°F). In February, the average high-temperature is relatively the same as in January - a still warm 29.1°C (84.4°F). Weather in February »

The first month of the spring, March, is a tropical month in Cozumel, Mexico, with average temperature ranging between max 30.9°C (87.6°F) and min 20.7°C (69.3°F). The ideal sea water temperature of 26°C (78.8°F) and only 4 rainfall days, with 32.2mm (1.3") of accumulated rainfall, make March the best time for swimming and other water activities. Weather in March »

April, the same as March, in Cozumel, Mexico, is another hot spring month, with average temperature varying between 21.8°C (71.2°F) and 32°C (89.6°F). The ideal sea water temperature of 27°C (80.6°F) and only 3.7 rainfall days, with 44.8mm (1.8") of accumulated rainfall, make April the best time for swimming and other water activities. Weather in April »

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

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

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

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

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

October, like September, is another tropical autumn month in Cozumel, Mexico, with temperature in the range of an average high of 30.7°C (87.3°F) and an average low of 23.1°C (73.6°F). In October, the average high-temperature is relatively the same as in September - a still hot 30.7°C (87.3°F). Weather in October »

The last month of the autumn, November, is another warm month in Cozumel, Mexico, with average temperature fluctuating between 29.7°C (85.5°F) and 21.7°C (71.1°F). In November, the average high-temperature is practically the same as in October - a moderately hot 29.7°C (85.5°F). Weather in November »

The first month of the winter, December, is still a warm month in Cozumel, Mexico, with average temperature varying 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 tropical 34.2°C (93.6°F). Weather in December »

What are the coldest months in Cozumel?

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

How many days does it rain in Cozumel?

Throughout the year, in Cozumel, there are 119.9 rainfall days, and 1489.9mm (58.7") of precipitation is accumulated.

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

January and December, with an average maximum UV index of 7, are months with the lowest UV index.

What are the months with the coldest sea water in Cozumel?

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

What is the least humid month in Cozumel?

March and April, with an average relative humidity of 79%, are the least humid months in Cozumel.

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 (1.3") of precipitation.

What month has the most sunshine in Cozumel?

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

When is 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?

With an average of 13.4h of daylight, June has the longest days of the year.

What months are 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 in Cozumel.

What is the warmest month in Cozumel?

The warmest month is August, 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?

With an average relative humidity of 87%, September is the most humid month.

What is the month with the least sunshine in Cozumel?

September and November, with an average of 6.1h of sunshine, are months with the least sunshine.

What is the rainiest month in Cozumel?

October is the month with the most rainfall. Rain falls for 15.7 days and accumulates 242.5mm (9.5") of precipitation.

What is the month with the shortest days in Cozumel?

The month with the shortest days in Cozumel is December, with an average of 10.9h of daylight.
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).
Coldest months (with the lowest average low temperature) are January and February (19.4°C).

Average humidity - Cozumel, Mexico
Average rainfall - Cozumel, Mexico

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

Average rainfall days - Cozumel, Mexico

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

Average sea temperature - Cozumel, Mexico

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

Average daylight / Average sunshine - Cozumel, Mexico

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

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

Average UV index - Cozumel, Mexico