May weather forecast
Merida, Mexico

May continues the pattern of escalating temperatures in Merida. The highest temperature in May can escalate up to 35.4°C (95.7°F), which is the peak temperature Merida experiences during the year. May is characterized by an increased level of humidity and rainfall, heightening the overall heat in the city. Visitors and locals can expect warmer and humid days throughout May. However, evenings can get fairly pleasant with a refreshing breeze.

Temperature

Merida experiences its highest average temperatures in May, reaching a peak of 35.4°C (95.7°F) and a minimum of 24°C (75.2°F).

Heat index

Throughout May, the heat index is estimated at a life-threatening hot 48°C (118.4°F). Eyes open: Heat cramps and heat exhaustion are expected. Prolonged exertion could lead to heatstroke.
The metrics for the heat index are tailored for both shady environments and light winds. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a measure of how hot it feels when the actual air humidity is factored in. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. 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.
Perspiring is the body's way of cooling down, particularly by allowing sweat to evaporate and take the heat with it. With high air temperature and humidity (high heat index) conditions, sweat production is restricted, leading to an amplified perception of heat. When body heat isn't effectively managed, risks of dehydration and overheating amplify.

Humidity

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

Rainfall

In May, the rain falls for 12.5 days. Throughout May, 43mm (1.69") of precipitation is accumulated. Throughout the year, there are 167.3 rainfall days, and 536mm (21.1") of precipitation is accumulated.

Daylight

The average length of the day in May is 13h and 8min.
On the first day of May, sunrise is at 5:27 am and sunset at 6:23 pm. On the last day of the month, sunrise is at 5:16 am and sunset at 6:35 pm CST.

Sunshine

May has the most sunshine of the year, with an average of 11.1h of sunshine.

UV index

February through October, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: A maximum daily UV index of 7 during May morphs into the following directions:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.