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

Cozumel experiences a recorded average high-temperature of a hot 30.9°C (87.6°F) in March, closely aligned with February's 29.1°C (84.4°F). During March, Cozumel's temperature falls to a steady low-temperature average of 20.7°C (69.3°F).

Heat index

For March, the heat index is estimated at an extremely hot 40°C (104°F). Adopt extra safety steps, risk of heat exhaustion and heat cramps is notable. Sustained activity might cause heatstroke.
For clarity, heat index numbers account for light winds and areas under 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 'real feel' or 'feels like', is a composite of temperature and humidity figures to convey how warm it feels. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. Excessive relative humidity disturbs the body's typical cooling process by reducing evaporation, leading to a decrease in body cooling rate and an increase in the sensation of warmth. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.

Humidity

The months with the lowest humidity are March and April, with an average relative humidity of 79%.

Rainfall

March is the month with the least rainfall. Rain falls for 4 days and accumulates 32mm (1.26") of precipitation.

Sea temperature

The months with the coldest seawater are February and March, with an average sea temperature of 26°C (78.8°F).
Note: Water temperatures between 25°C (77°F) and 29°C (84.2°F) are ideal for all water activities, offering enjoyment without causing discomfort over extended periods.

Daylight

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

Sunshine

In Cozumel, the average sunshine in March is 7.5h.

UV index

In Cozumel, the average daily maximum UV index in March is 11. A UV Index value of 11, and more, symbolizes an extreme threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: A daily high UV index of 11 in March leads to these guidelines:
Practice all essential precautions. Protection against sun damage is crucial. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Frequent reapplication of a broad-spectrum SPF 30+ sunscreen is vital every two hours or directly after a swim or an outdoor workout. Attention! UV strength is notably upped by the reflection of sand and water.