March weather forecast
Merida, Mexico

The month of March ushers in Merida's warm season. The notable rise in temperature, reaching up to 32.4°C, commences the beginning of hot weather. The city experiences increased daylight hours and more sunshine, leading to longer and warmer days. March's overall weather is a blend of higher temperatures and decreasing rainfall. This month is ideal for those who prefer the warmer weather despite the potentially high UV index.

Temperature

February's transformation into March witnesses an average high-temperature of a still tropical 32.4°C in Merida, noting a minor change from the preceding month. During March, Merida detects a significant contrast from its daytime temperatures, with nights averaging at an agreeable 20.2°C.

Heat index

The heat index for March is computed to be a torrid 39°C. Undertake extra safety actions, heat cramps and heat exhaustion are expected. Heatstroke may result from lengthy activity.
Remember that heat index calculations are made for conditions in the shade with light wind. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', unifies temperature and humidity readings to offer a comprehensive feel of warmth. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. Under conditions of high temperature and humidity (enhanced heat index), sweat production is compromised, exacerbating the sensation of warmth. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.

Humidity

In March, the average relative humidity is 64%.

Rainfall

February and March are months with the least rain in Merida when the rain falls for 7.2 days and typically aggregates up to 12mm of rain.

Daylight

In March, the average length of the day is 12h and 2min.
On the first day of March, sunrise is at 6:18 am and sunset at 6:02 pm. On the last day of the month, sunrise is at 5:52 am and sunset at 6:12 pm CST.

Sunshine

In March, the average sunshine is 9.3h.

UV index

February through October, with an average maximum UV index of 7, are months with the highest UV index in Merida. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In March, the maximum UV index of 7 translates into these guidelines:
Guard oneself from overexposure. Defence against sun injury is vital. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Opt for tightly woven and loose clothing to enhance protection from the Sun.