March weather forecastCozumel, Mexico

Weather in March

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 transitions from February to March, the average high-temperatures adjust to a hot 30.9°C (87.6°F), nearly the same as the previous 29.1°C (84.4°F). Cozumel observes an average nighttime low-temperature of 20.7°C (69.3°F) during the month of March.

Heat index

Throughout March, the heat index is computed to be an extremely hot 40°C (104°F). More preventive actions are needed, risk of heat exhaustion and heat cramps is significant. Prolonged activity may trigger heatstroke.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', combines both the air temperature and the humidity level to give a perceived human temperature. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Being under direct sunshine can magnify the heat experience, possibly pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through 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. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

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

Rainfall

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

Sea temperature

February and March, with an average sea temperature of 26°C (78.8°F), are months with the coldest seawater.
Note: For swimming, diving, and various water activities, the temperatures ranging from 25°C (77°F) to 29°C (84.2°F) are seen as highly enjoyable and comfortable for extended durations without any discomfort.

Daylight

The average length of the day in March 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

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 of 11, and more, symbolizes an extreme threat to health from unsafe exposure to UV radiation for average individuals.
Note: A daily high UV index of 11 in March leads to these guidelines:
Undertake every vital safety procedure, as unprotected skin and eyes could sustain burns in no time. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. During bright days, sunglasses that offer UVA and UVB defense are recommended. Broad-spectrum sunscreen with an SPF of 30 or above should be applied generously and reapplied every two hours and right after any outdoor activity or swim. Attention! UV radiation is ramped up when reflecting off sand and water surfaces.