April weather forecast
Metapan, El Salvador

April marks the advent of the monsoon season in Metapan, El Salvador. With temperatures hitting an average high of approximately 33.2°C (91.8°F), the climate is considerably hot. However, the monsoon brings a substantial amount of rain that provides respite from the heat. Cloud%, along with humidity levels, show a noticeable increase this month. Citing the significant rainfall, tourists and residents must consider carrying appropriate rain gear when planning outdoor activities.

Temperature

Metapan's temperature records reveal April as the warmest month, marked by average highs of 33.2°C (91.8°F) and lows of 20.3°C (68.5°F).

Heat index

The heat index in April is calculated to be an extremely hot 42°C (107.6°F). Take more preventive steps, risk of heat exhaustion and heat cramps is elevated. Long activity may culminate in heatstroke.
Be informed that the heat index values are oriented around shady conditions and gentle breezes. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is a measure of how hot it feels when the actual air humidity is factored in. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
To combat high temperatures, the human body perspires and relies on sweat evaporation for cooling. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.

Humidity

In Metapan, the average relative humidity in April is 66%.

Rainfall

In Metapan, in April, during 14.8 rainfall days, 51mm (2.01") of precipitation is typically accumulated. Throughout the year, there are 181.4 rainfall days, and 1055mm (41.54") of precipitation is accumulated.

Daylight

The average length of the day in April is 12h and 28min.
On the first day of April in Metapan, sunrise is at 05:52 and sunset at 18:10. On the last day of the month, sunrise is at 05:35 and sunset at 18:14 CST.

Sunshine

With an average of 11.3h of sunshine, April has the most sunshine of the year.

UV index

The months with the highest UV index in Metapan are January through August, October through December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The daily high UV index of 6 during April translates into the following recommendations:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. A hat with a broad brim is indispensable, filtering out up to half of UV rays.