April weather forecast
Merida, Mexico

April sees further warming in Merida as the summer season proceeds. The city experiences significant daylight hours with temperatures reaching a high of 35.3°C on average. Temperatures can get notably high in April, making it the perfect time for pool parties and indoor activities. Despite high temperatures, a moderate level of rainfall provides relief to the inhabitants of the city. Travelers should be prepared for warm weather during this month.

Temperature

Merida's shift from March to April is accompanied by an average high-temperature of a torrid 35.3°C, a slight deviation from 32.4°C. A notable decrease from the day's highest temperature marks April, culminating in an average low of 22.4°C.

Heat index

In April, the average heat index is computed to be a life-threatening hot 48°C. Forewarned: Heat cramps and heat exhaustion are anticipated. Ongoing physical activity increases the likelihood of heatstroke.
Heat index specifics point out values are for conditions of shade and a slight breeze. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', gives an indication of how one might feel in terms of heat after considering humidity. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.
Sweat evaporation, driven by perspiration, is the method the human body uses to rid itself of excessive warmth. In the presence of abundant moisture in the atmosphere, the cooling process through evaporation is hindered, causing the body to feel excessively warm. As the body accumulates more heat than it can release, body temperature goes up, increasing the risk of heat-related health issues.

Humidity

The months with the lowest humidity are April and May, with an average relative humidity of 63%.

Rainfall

In Merida, in April, it is raining for 10.2 days, with typically 20mm of accumulated precipitation. In Merida, during the entire year, the rain falls for 167.3 days and collects up to 536mm of precipitation.

Daylight

In April, the average length of the day is 12h and 38min.
On the first day of the month, sunrise is at 5:51 am and sunset at 6:13 pm. On the last day of April, sunrise is at 5:28 am and sunset at 6:22 pm CST.

Sunshine

In April, the average sunshine is 10.9h.

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 of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: The daily maximum UV index of 7 in April interprets into the following advice:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. 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. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.