May weather forecast
Umán, Mexico

The last month of the spring, May, is also a sweltering month in Umán, Mexico, with an average temperature fluctuating between 24°C (75.2°F) and 35.4°C (95.7°F).

Temperature

May is the month that records the highest temperatures, with averages ranging from a high of 35.4°C (95.7°F) to a low of 24°C (75.2°F).

Heat index

In May, the heat index is appraised at a burning hot 48°C (118.4°F). Take caution: Heat exhaustion and heat cramps are probable. Heatstroke may be imminent with ongoing effort.
Take into consideration that the heat index values are calculated for shade and light wind conditions. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', evaluates the perceived heat by adding the effect of moisture in the air. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for 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.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. With higher relative humidity, the rate of evaporation is reduced, resulting in increased heat retention in the body compared to drier air. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.

Humidity

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

Rainfall

In Umán, during May, the rain falls for 12.5 days and regularly aggregates up to 43mm (1.69") of precipitation. Throughout the year, in Umán, Mexico, there are 167.3 rainfall days, and 536mm (21.1") of precipitation is accumulated.

Daylight

In Umán, the average length of the day in May is 13h and 8min.
On the first day of May, sunrise is at 5:28 am and sunset at 6:23 pm. On the last day of the month, sunrise is at 5:17 am and sunset at 6:36 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 estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the average person.
Note: A daily high UV index of 7 in May leads to these guidelines:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.