May weather forecast
San José Villanueva, El Salvador

May unmistakably marks the peak of the wet season in San José Villanueva, highlighted by a dramatic leap in rainfall to 234mm (9.21"). The rapid transition to wetter conditions is complemented by the highest relative humidity reading of 76% and a decrease in sunshine hours. The high temperatures experienced in April take a minor dip, providing some respite from the intense heat. A discernible decrease in wind speed adds to the sensation of increased heat and humidity. The persistent UV index of 6 emphasizes the need for sufficient sun safety measures.

Temperature

As May unfolds in San José Villanueva, the average high-temperature reaches a still tropical 30.9°C (87.6°F), hinting at a slight fluctuation from the previous month. In May, the temperature in San José Villanueva drops to an average of 22.7°C (72.9°F) at night.

Heat index

During May, the heat index is estimated at a torrid 39°C (102.2°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant 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.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. Excessive relative humidity disturbs the body's typical cooling process by reducing evaporation, leading to a decrease in body cooling rate and an increase in the sensation of warmth. Heat disorders may be on the horizon when body temperatures rise from inadequate heat management.

Humidity

In San José Villanueva, the average relative humidity in May is 76%.

Rainfall

May is the month with the most rainfall in San José Villanueva, El Salvador. Rain falls for 25.5 days and accumulates 234mm (9.21") of precipitation.

Daylight

In San José Villanueva, the average length of the day in May is 12h and 46min.
On the first day of May in San José Villanueva, sunrise is at 05:35 and sunset at 18:12. On the last day of the month, sunrise is at 05:28 and sunset at 18:21 CST.

Sunshine

The average sunshine in May is 10.8h.

UV index

The months with the lowest UV index are January, May, June, August through December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: The UV index of 6 in May translates into these instructions:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Enhance your sun protection with tightly woven, yet airy clothing.