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

During the warmest month in Merida, May, temperatures average a high of 35.4°C (95.7°F) and a low of 24°C (75.2°F).

Heat index

May's average heat index is appraised at a blazing hot 48°C (118.4°F). Mind: Heat cramps along with heat exhaustion are anticipated. Heatstroke can develop with continued physical activity.
It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
Evaporating sweat, thanks to perspiration, acts as a natural air conditioner for the human body. When relative humidity increases, the body's capacity to evaporate heat decreases, leading to a heightened sense of warmth. Heat-related challenges, like dehydration, can be anticipated when body heat isn't managed effectively.

Humidity

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

Rainfall

In Merida, Mexico, in May, during 12.5 rainfall days, 43mm (1.69") of precipitation is typically accumulated. Throughout the year, in Merida, there are 167.3 rainfall days, and 536mm (21.1") of precipitation is accumulated.

Daylight

In May, the average length of the day in Merida 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

The month with the most sunshine is May, with an average of 11.1h of sunshine.

UV index

The months with the highest UV index are February through October, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: A daily maximum UV index of 7 in May translates into the following instructions:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.