May weather forecastIlopango, El Salvador

Weather in May

May marks the official start of the wet season in Ilopango. In stark contrast to previous months, the city experiences 267mm (10.51") of rainfall over 26.9 rainy days. Yet, 12.8 hours of daylight and 10.7 hours of sun often punctuate the rainfall. Although the rainfall rises substantially, the temperatures remain steady making May a month of stark transitions in the city's climate.

Temperature

The commencement of May brings an average high-temperature of a still hot 31.8°C (89.2°F), marking an inconsequential divergence from April. May nights in Ilopango observe an average temperature dip to a pleasant 22.6°C (72.7°F).

Heat index

May's heat index is estimated at a blistering 42°C (107.6°F). Undertake enhanced precautions, heat exhaustion and heat cramps are possible risks. Continuous activity could trigger heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', gives an indication of how one might feel in terms of heat after considering humidity. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The process of perspiration is vital for the human body to get rid of excess warmth by allowing sweat to evaporate. Under conditions of high relative humidity, the rate of evaporation decreases. This results in the body retaining more heat than under conditions of dry air. Accumulating heat beyond the body's cooling measures leads to rising temperatures and potential ailments.

Humidity

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

Rainfall

May is the month with the most rainfall. Rain falls for 26.9 days and accumulates 267mm (10.51") of precipitation.

Daylight

In May, the average length of the day is 12h and 46min.
On the first day of the month, sunrise is at 05:34 and sunset at 18:12. On the last day of May, sunrise is at 05:27 and sunset at 18:20 CST.

Sunshine

The average sunshine in May is 10.7h.

UV index

The months with the lowest UV index are May through December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: In May, an average UV index of 6 transforms into the following instructions:
Guard against overexposure. Protection from sun-induced harm is essential. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.