April weather forecast
Acajutla, El Salvador

April, like March, is a hot spring month in Acajutla, El Salvador, with an average temperature varying between 26.3°C (79.3°F) and 30.6°C (87.1°F).

Temperature

April is the warmest month, with an average high-temperature of 30.6°C (87.1°F) and an average low-temperature of 26.3°C (79.3°F).

Heat index

In April, the average heat index is computed to be a very hot 36°C (96.8°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'real feel', 'feels like', or 'apparent temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Additional factors like activity, differences in body mass, height, and shape, clothing, and pregnancy affect individual temperature impact. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. 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 Acajutla, the average relative humidity in April is 69%.

Rainfall

In Acajutla, during 14.5 rainfall days, 28mm (1.1") of precipitation is typically accumulated. In Acajutla, during the entire year, the rain falls for 183.3 days and collects up to 831mm (32.72") of precipitation.

Sea temperature

In Acajutla, the average seawater temperature in April is 29.3°C (84.7°F).
Note: Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

Daylight

In April, the average length of the day in Acajutla, El Salvador, is 12h and 27min.
On the first day of the month, sunrise is at 05:55 and sunset at 18:11. On the last day of April, sunrise is at 05:38 and sunset at 18:14 CST.

Sunshine

The month with the most sunshine is April, with an average of 11.5h of sunshine.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index in Acajutla. The months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for average individuals.
Note: The average daily UV index of 7 in April transform into the following instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.