March weather forecast
Cozumel, Mexico

Transitioning into March brings a noticeable increase in daylight and sunshine hours, hinting at the arrival of summer. The weather continues to heat up, and the UV index jumps to its annual peak, underscoring the importance of sunblock. An observable decrease in relative humidity indicates the onset of the dry season. Notably, the total number of rainfall decreases further from 6.5 to 4 days. March is generally warmer with a higher end temperature reaching up to 30.9°C (87.6°F).

Temperature

As Cozumel steps into March, the average high-temperature is measured at a hot 30.9°C (87.6°F), displaying minor differences from February's 29.1°C (84.4°F). In the month of March, Cozumel experiences an average low-temperature of 20.7°C (69.3°F).

Heat index

Throughout March, the heat index is calculated to be a scorching 40°C (104°F). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.
Note that heat index values are valued for light wind and location in the shade. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are largely significant for babies and toddlers. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
The body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. Elevated relative humidity diminishes evaporation, thereby reducing the body's ability to shed heat and creating a feeling of being too warm. When body heat isn't effectively managed, risks of dehydration and overheating amplify.

Humidity

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

Rainfall

The month with the least rainfall in Cozumel is March, when the rain falls for 4 days and typically collects 32mm (1.26") of precipitation.

Sea temperature

The months with the coldest seawater in Cozumel are February and March, with an average sea temperature of 26°C (78.8°F).
Note: Engaging in water activities, such as swimming or diving, in temperatures from 25°C (77°F) to 29°C (84.2°F) is very pleasurable for extended periods, without any discomfort.

Daylight

In March, the average length of the day in Cozumel is 12h and 3min.
On the first day of the month, sunrise is at 7:06 am and sunset at 6:52 pm. On the last day of March, sunrise is at 6:41 am and sunset at 7:02 pm EST.

Sunshine

In March, the average sunshine is 7.5h.

UV index

In Cozumel, Mexico, the average daily maximum UV index in March is 11. A UV Index of 11, and more, symbolizes an extreme threat to health from exposure to the Sun's UV radiation for average individuals.
Note: The maximum UV index of 11 during March translates into these guidelines:
Put into action all crucial precautions. Defense against sun damage is a must. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Apply and frequently reapply a minimum SPF 30 sunscreen even on cloudy days, especially after swimming or an outdoor workout. Notice! The reflection of water and sand increases the UV radiation significantly.