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 (95.5°F) 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

Transitioning into April, Merida records an average high-temperature of a sweltering 35.3°C (95.5°F), almost identical to March's 32.4°C (90.3°F). Merida's average nighttime temperature descends significantly from the day's peak in April, settling at an agreeable 22.4°C (72.3°F).

Heat index

The heat index value during April is estimated at a life-threatening hot 48°C (118.4°F). Warning: Heat cramps and heat exhaustion are anticipated. Heatstroke is a risk with ongoing activity.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'real feel' or 'feels like', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
Perspiration is essential for the human body; it facilitates cooling through the process of sweat evaporation. When relative humidity increases, the body's capacity to evaporate heat decreases, leading to a heightened sense of warmth. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.

Humidity

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

Rainfall

In April, the rain falls for 10.2 days. Throughout April, 20mm (0.79") of precipitation is accumulated. In Merida, during the entire year, the rain falls for 167.3 days and collects up to 536mm (21.1") of precipitation.

Daylight

In Merida, the average length of the day in April is 12h and 38min.
On the first day of the month, sunrise is at 5:50 am and sunset at 6:13 pm. On the last day of April, sunrise is at 5:27 am and sunset at 6:23 pm CST.

Sunshine

The average sunshine in April is 10.9h.

UV index

The months with the highest UV index are February through October, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for average individuals.
Note: The maximum UV index of 7 during April leads to these instructions:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.