May weather forecast
San Esteban Catarina, El Salvador

May ushers in the wet season with soaring levels of humidity and a pronounced increase in rainfall. However, temperatures remain stable, creating a contrasting climate. The brighter side still holds, with ample daylight hours and considerable sunshine across San Esteban Catarina. A staggering rise in monthly rainfall to 238mm (9.37") marks the highest throughout the year. The end of May hints towards persisting humid conditions and high precipitation in the following months.

Temperature

The commencement of May in San Esteban Catarina introduces an average high-temperature of a still tropical 32.3°C (90.1°F), closely mirroring the preceding month. San Esteban Catarina temperatures generally rest at a low of 22.8°C (73°F) during the May nights.

Heat index

Throughout May, the heat index is computed to be a blisteringly hot 44°C (111.2°F). Observe: Heat exhaustion and heat cramps are probable. Heatstroke is on the horizon with prolonged exertion.
Note that heat index values are valued for light wind and location in the shade. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', represents the fusion of temperature and moisture in the air to suggest how warm it feels. 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. 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 especially vital to children. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. An increase in relative humidity disrupts body cooling by slowing the evaporation rate, thereby reducing the rate at which the body cools and amplifying the sense of heat. The body is at risk of dehydration and related complications when it fails to shed excessive heat.

Humidity

In May, the average relative humidity in San Esteban Catarina is 76%.

Rainfall

May is the month with the most rainfall in San Esteban Catarina. Rain falls for 29.3 days and accumulates 238mm (9.37") of precipitation.

Daylight

In May, the average length of the day in San Esteban Catarina is 12h and 46min.
On the first day of May, sunrise is at 05:33 and sunset at 18:11. On the last day of the month, sunrise is at 05:26 and sunset at 18:19 CST.

Sunshine

In May, the average sunshine is 10.6h.

UV index

The months with the highest UV index in San Esteban Catarina, El Salvador, are January through May and July, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The daily high UV index of 7 during May translates into the following recommendations:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.