May weather forecast
Tepecoyo, El Salvador

May marks the full swing of the wet season in Tepecoyo. Following the trend from April, the precipitation levels amplify, meaning frequent and possibly heavy showers. Despite receiving an increased level of rainfall, temperatures remain consistently high. Coupled with the heat, the city also experiences an increased level of humidity, making the environment lush and thriving. May experiences the highest levels of rainfall in the year, recording an average rainfall of 234mm (9.21") spread over 25.5 days.

Temperature

The arrival of May marks a slight shift to an average high-temperature of a still hot 30.9°C (87.6°F) from April's 32.5°C (90.5°F). Tepecoyo's nights in May cool down to an average low-temperature of 22.7°C (72.9°F).

Heat index

For May, the heat index is calculated to be a torrid 39°C (102.2°F). Incorporate special precautions, risk of heat exhaustion and heat cramps is substantial. Sustained activity could cause heatstroke.
Be aware that heat index ratings are designed for shaded locations and minor breezes. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', embodies the combination of air temperature and moisture content to illustrate perceived heat. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
Perspiration is essential for the human body; it facilitates cooling through the process of sweat evaporation. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

In Tepecoyo, the average relative humidity in May is 76%.

Rainfall

The month with the most rainfall is May, when the rain falls for 25.5 days and typically aggregates up to 234mm (9.21") of precipitation.

Daylight

In Tepecoyo, the average length of the day in May is 12h and 46min.
On the first day of the month, sunrise is at 05:35 and sunset at 18:13. On the last day of May, sunrise is at 05:29 and sunset at 18:22 CST.

Sunshine

In May, the average sunshine in Tepecoyo is 10.8h.

UV index

January, May, June, August through December, with an average maximum UV index of 6, are months with the lowest UV index in Tepecoyo. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum UV index, 6 during May, leads to the following recommendations:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. During bright days, sunglasses that offer UVA and UVB defense are recommended.