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

January 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
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).

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 calculated to a tropical 34°C (93.2°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'real feel', 'apparent temperature', or 'feels like', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Additional factors like activity, pregnancy, clothing, and wind affect individual temperature impact. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. 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 January, the average relative humidity in Cozumel is 82%.

Rainfall

In Cozumel, during 8.7 rainfall days, 81.4mm (3.2") of precipitation is typically accumulated. In Cozumel, Mexico, during the entire year, the rain falls for 119.9 days and collects up to 1489.9mm (58.7") of precipitation.

Sea temperature

In January, the average sea temperature is 27°C (80.6°F).
Note: 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.

Daylight

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

Sunshine

The average sunshine in January is 6.4h.

UV index

Months with the lowest UV index in Cozumel, Mexico, are January and December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health risk from the exposure to the Sun's UV radiation for ordinary individuals.
Note: In January, the average maximum UV index of 7 translate into the following recommendations:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.

What are the coldest months in Cozumel?

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

What is the temperature in January in Cozumel?

The average high-temperature, in January, in Cozumel, Mexico, is 28.6°C (83.5°F), while the average low-temperature is 19.4°C (66.9°F). The average heat index (a.k.a. 'apparent temperature', 'real feel'), that factores the actual air temperature with the relative humidity, in January is estimated at 34°C (93.2°F).

What is the average humidity in January in Cozumel?

The average relative humidity in January is 82%.

How much does it rain in Cozumel in January?

In Cozumel, in January, it is raining for 8.7 days, with typically 81.4mm (3.2") of accumulated precipitation.

What is the sea water temperature in January in Cozumel?

In January, the average sea temperature in Cozumel is 27°C (80.6°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

What is the average length of the day in January in Cozumel?

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

How many hours of sunshine does Cozumel have in January?

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

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 in Cozumel, Mexico.

How high is the UV index in January in Cozumel?

The average daily maximum UV index in January is 7. A UV Index reading of 6 to 7 represents a high health threat from unprotected exposure to the UV radiation.
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).
Coldest months (with the lowest average low temperature) are January and February (19.4°C).

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%).

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 lowest rainfall) is March (32.2mm).

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 lowest number of rainy days is April (3.7 days).

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

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 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 shortest days is December (Average daylight: 10.9h).

  • Average sunshine in January: 6.4h

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 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).