May weather forecast
Casa de Piedra, El Salvador

The last month of the spring, May, is another hot month in Casa de Piedra, El Salvador, with temperature in the range of an average high of 30.9°C (87.6°F) and an average low of 22.7°C (72.9°F).

Temperature

As April turns into May, the average high-temperatures rest at a still tropical 30.9°C (87.6°F), showing a minor variation from the prior month. In the month of May, the nighttime temperature in Casa de Piedra dips to a steady average of 22.7°C (72.9°F).

Heat index

In May, the heat index is calculated to be a torrid 39°C (102.2°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Understand that the heat index values take into account shaded locations and mild winds. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', reflects the blend of air temperature and relative humidity to give a temperature impression. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. 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 hold particular importance for children. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
The body's innate mechanism to counteract overheating is through perspiration, as it leverages the cooling effects of sweat evaporation. Increased relative humidity interferes with body cooling by slowing the rate of evaporation, resulting in a slower body cooling rate and a heightened feeling of heat. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

In May, the average relative humidity in Casa de Piedra is 76%.

Rainfall

May is the month with the most rainfall in Casa de Piedra. Rain falls for 25.5 days and accumulates 234mm (9.21") of precipitation.

Daylight

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

Sunshine

In Casa de Piedra, 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 vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A maximum UV index of 6 in May translates into the following recommendations:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. Stay sun-safe with clothing that is both closely woven and worn loosely.