January weather forecast
Cozumel, Mexico

The start of the year in Cozumel, Mexico is characterized by a gentle rise in temperatures from the cooler winter months. Moderate humidity and an increase in rainfall contribute to a balmy climate. Daylight lasts slightly over 11 hours, providing ample time for outdoor activities. A UV index of 7 indicates a need for precautions against sun damage especially during midday. Besides, January stands apart due to extremely high total rainfall, where it reaches up to 81mm (3.19").

Temperature

The months of January and December bring the lowest temperatures, averaging a high of 28.6°C (83.5°F).

Heat index

For most parts of January, the heat index is calculated to be a tropical 34°C (93.2°F). Incorporate additional preventive steps, heat exhaustion and heat cramps are possible. Long-lasting activity may cause heatstroke.
Keep in mind the heat index values are meant for areas in shade and with light wind. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', takes into account both air temperature and humidity to illustrate what people actually feel. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. When exposed to direct sunlight, it's possible for the heat index to increase by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Children frequently do not understand the need for recuperation and hydration. Thirst, being a late manifestation of dehydration, underlines the need to hydrate frequently, especially when engaging in prolonged physical exercises.

Humidity

The average relative humidity in January in Cozumel is 82%.

Rainfall

In January, in Cozumel, the rain falls for 8.7 days. Throughout January, 81mm (3.19") of precipitation is accumulated. In Cozumel, during the entire year, the rain falls for 119.9 days and collects up to 1490mm (58.66") of precipitation.

Sea temperature

In Cozumel, in January, the average water temperature is 27°C (80.6°F).
Note: Water activities in surface temperatures between 25°C (77°F) and 29°C (84.2°F) are seen as exceptional and extremely agreeable for lengthened time spans.

Daylight

In January, the average length of the day is 11h and 4min.
On the first day of January in Cozumel, sunrise is at 7:23 am and sunset at 6:18 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 6:38 pm EST.

Sunshine

The average sunshine in January in Cozumel is 6.4h.

UV index

The months with the lowest UV index in Cozumel are January and December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: An average maximum UV index of 7 in January leads to these recommendations:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Notice! The Sun's UV exposure elevates with sand and water reflections.