January 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

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).

Temperature

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

Heat index

The average heat index is estimated at a tropical 34°C (93.2°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'apparent temperature', 'feels like', or 'felt air temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Additional factors like metabolic differences, pregnancy, wind, and activity influence one's weather impression. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

In Cozumel, the average relative humidity is 82%.

Rainfall

In Cozumel, during January, the rain falls for 8.7 days and regularly aggregates up to 81.4mm (3.2") of precipitation. Throughout the year, there are 119.9 rainfall days, and 1489.9mm (58.66") of precipitation is accumulated.

Sea temperature

In Cozumel, the average seawater temperature is 27°C (80.6°F).
Note: For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

The average length of the day in January is 11.1h.

Sunshine

The average sunshine in Cozumel is 6.4h.

UV index

January and December, with an average maximum UV index of 7, are months with the lowest UV index in Cozumel. A UV Index value of 6 to 7 symbolizes a high health hazard from the exposure to the Sun's UV radiation for the ordinary person.
Note: The daily maximum UV index of 7 in January interpret into the following advice:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.
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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 in Cozumel.

What is the temperature in January in Cozumel?

In January, in Cozumel, Mexico, the average high-temperature is 28.6°C (83.5°F), and the average low-temperature is 19.4°C (66.9°F). In January, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which factors the actual air temperature with the relative humidity, is estimated at 34°C (93.2°F).

What is the average humidity in January in Cozumel?

In Cozumel, Mexico, the average relative humidity in January is 82%.

How much does it rain in Cozumel in January?

In January, in Cozumel, Mexico, the rain falls for 8.7 days. Throughout January, 81.4mm (3.2") of precipitation is accumulated.

What is the water temperature in January in Cozumel?

In Cozumel, Mexico, the average seawater temperature in January is 27°C (80.6°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

How many hours of daylight does Cozumel have in January?

In January, the average length of the day is 11.1h.

How many hours of sunshine does Cozumel have in January?

In January, the average sunshine in Cozumel is 6.4h.

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

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

How high is the UV index in January in Cozumel?

In January, the average daily maximum UV index in Cozumel, Mexico, is 7. A UV Index of 6 to 7 symbolizes a high hazard to health from the exposure to the Sun's UV rays.

Average temperature in January
Cozumel, Mexico

Average temperature in January - Cozumel, Mexico
  • Average high temperature in January: 28.6°C

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).

  • Average low temperature in January: 19.4°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 in January
Cozumel, Mexico

Average humidity in January - Cozumel, Mexico
  • Average humidity in January: 82%

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 in January
Cozumel, Mexico

Average rainfall in January - Cozumel, Mexico
  • Average rainfall in January: 81.4mm

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 in January
Cozumel, Mexico

Average rainfall days in January - Cozumel, Mexico
  • Average rainfall days in January: 8.7 days

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 in January
Cozumel, Mexico

Average sea temperature in January - Cozumel, Mexico
  • Average sea temperature in January: 27°C

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 in January /
Average sunshine in January
Cozumel, Mexico

Average daylight in January / Average sunshine in January - Cozumel, Mexico
  • Average daylight in January: 11.1h

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

  • Average sunshine in January: 6.4h

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 in January
Cozumel, Mexico

Average UV index in January - Cozumel, Mexico
  • Average UV index in January: 7

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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