May weather forecast
Bacalar, Mexico

The last month of the spring, May, is also a hot month in Bacalar, Mexico, with an average temperature ranging between max 31.8°C (89.2°F) and min 24.8°C (76.6°F).

Temperature

Bacalar's highest average temperatures are recorded in May and August, reaching a high of 31.8°C (89.2°F).

Heat index

The heat index value during May is calculated to be a blisteringly hot 42°C (107.6°F). Implement enhanced safety actions, heat cramps and heat exhaustion could occur. Sustained activity might result in heatstroke.
For clarity, heat index numbers account for light winds and areas under shade. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
Perspiration is the body's default response to elevated temperatures, as it promotes the evaporation of sweat to achieve cooling. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.

Humidity

The average relative humidity in May in Bacalar is 76%.

Rainfall

In Bacalar, in May, during 16.3 rainfall days, 53mm (2.09") of precipitation is typically accumulated. Throughout the year, in Bacalar, there are 198.4 rainfall days, and 752mm (29.61") of precipitation is accumulated.

Daylight

In Bacalar, the average length of the day in May is 13h and 1min.
On the first day of May, sunrise is at 6:25 am and sunset at 7:15 pm. On the last day of the month, sunrise is at 6:16 am and sunset at 7:26 pm EST.

Sunshine

In Bacalar, the average sunshine in May is 8.5h.

UV index

The months with the highest UV index in Bacalar, Mexico, are March through July and September, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: In May, the maximum UV index of 7 translates into these guidelines:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Employ a wide-brim hat for potent defense against up to 50% of UV rays.