April weather forecast
Opico, El Salvador

April, the same as March, in Opico, El Salvador, is another tropical spring month, with temperature in the range of an average high of 32.5°C (90.5°F) and an average low of 22.8°C (73°F).

Temperature

The ushering in of April brings an average high-temperature of a still tropical 32.5°C (90.5°F), closely mirroring the 32.6°C (90.7°F) of March. Nighttime temperatures in Opico, El Salvador, hover around an average low of 22.8°C (73°F) in April.

Heat index

For April, the heat index is appraised at a blistering 41°C (105.8°F). Incorporate special precautions, risk of heat exhaustion and heat cramps is substantial. Sustained activity could cause heatstroke.
Understanding the heat index involves considering values for shaded locales with light wind. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', arises from combining readings of air temperature and relative moisture content. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
Perspiration, followed by sweat evaporation, is the human body's chief method to maintain a balanced temperature. When relative humidity is at high levels, the evaporation rate lessens, causing the body to keep more heat than it would in less humid conditions. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.

Humidity

The average relative humidity in April is 67%.

Rainfall

In Opico, El Salvador, in April, during 15.2 rainfall days, 45mm (1.77") of precipitation is typically accumulated. Throughout the year, there are 187 rainfall days, and 1106mm (43.54") of precipitation is accumulated.

Daylight

In April, the average length of the day is 12h and 27min.
On the first day of April, sunrise is at 05:52 and sunset at 18:09. On the last day of the month, sunrise is at 05:35 and sunset at 18:13 CST.

Sunshine

With an average of 11.4h of sunshine, April has the most sunshine of the year.

UV index

The months with the highest UV index are February through April and July, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: A maximum UV index of 7 in April translates into the following recommendations:
Sidestep overexposure. Individuals with fair complexions risk burning in fewer than 20 minutes. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.