May weather forecast
La Union, El Salvador

May acts as the bridge between the warmer and wetter seasons in La Union. The most remarkable characteristic is the sharp spike in monthly rainfall, reaching up to 177mm (6.97") from April's total of 27mm (1.06"). And yet, the city's charm remains undiminished, if not enhanced, by the transformation brought by rain. The month's sea temperatures are agreeable for swimming, with hours of daylight reaching their highest. Meanwhile, the land is lush, and the environment is teeming with life in response to the increased precipitation.

Temperature

The commencement of May in La Union notes an average high-temperature of a still tropical 33.2°C (91.8°F), exhibiting little difference from the previous month. La Union's average low-temperature during May nights is observed to be a warm 25.5°C (77.9°F).

Heat index

Throughout May, the heat index is evaluated at an extremely hot 44°C (111.2°F). Stay vigilant: Heat cramps along with heat exhaustion are expected. Heatstroke may follow prolonged exertion.
It is emphasized that the heat index's values are meant for shaded zones with mild winds. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'real feel' or 'apparent temperature', integrates the air's temperature and its humidity to showcase the felt temperature by people. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are particularly meaningful for babies and toddlers. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.
To offset high temperatures, the human body releases sweat which, upon evaporation, cools it down. When the air holds a significant amount of moisture, the efficiency of the evaporation process is decreased, preventing the body from cooling down efficiently, leading to the sensation of overheating. Overheating dangers loom when the body's heat release mechanisms are overshadowed by excessive gain.

Humidity

In La Union, the average relative humidity in May is 70%.

Rainfall

In May, in La Union, the rain falls for 26.7 days. Throughout May, 177mm (6.97") of precipitation is accumulated. Throughout the year, there are 201.6 rainfall days, and 974mm (38.35") of precipitation is accumulated.

Sea temperature

In La Union, El Salvador, the average seawater temperature in May is 29.7°C (85.5°F).
Note: Water temperature between 25°C (77°F) and 29°C (84.2°F) is perceived as agreeably warm, making all water activities enjoyable without the risk of discomfort over lengthy durations.

Daylight

In May, the average length of the day in La Union is 12h and 45min.
On the first day of the month, sunrise is at 05:29 and sunset at 18:07. On the last day of May, sunrise is at 05:23 and sunset at 18:15 CST.

Sunshine

In La Union, the average sunshine in May is 10.9h.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index. The months with the lowest UV index in La Union are January through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the average person.
Note: A daily high UV index of 7 in May leads to these guidelines:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Note! Reflective surfaces like sand and water heighten the UV radiation levels.