April weather forecast
Usulutan, El Salvador

April in Usulutan marks the real beginning of the warmer season. While there are noticeable fluctuations in temperatures, a not-install increase in humidity and daylight hours, the most remarkable shift is seen in the rainfall. The region registers a significant leap in rainfall, racking up to 50mm (1.97") in April, accompanied by a corresponding rise in rainfall days. Wind speeds during this period remain rather relaxed, and the bright sunshine on most April days only adds to the charm of this month.

Temperature

April's arrival in Usulutan, El Salvador, brings an average high-temperature of a still hot 32.8°C (91°F), slightly deviating from March's 33.2°C (91.8°F). Throughout April, Usulutan encounters an average temperature drop to a warm 24.5°C (76.1°F).

Heat index

The heat index value during April is appraised at a blistering 42°C (107.6°F). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.
Consider that heat index readings are for situations in the shade and light wind. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'real feel' or 'feels like', is an estimation of the warmth sensation when considering humidity levels. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. Being under direct sunshine can magnify the heat experience, possibly pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
The physiological response of the human body to excess warmth is to perspire, thereby cooling itself through sweat evaporation. When there is an excess of moisture in the atmosphere, the efficiency of the evaporation process is lessened, leading to less efficient body cooling and a sensation of overheating. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.

Humidity

The average relative humidity in April in Usulutan is 67%.

Rainfall

In Usulutan, El Salvador, in April, it is raining for 17.8 days, with typically 50mm (1.97") of accumulated precipitation. Throughout the year, in Usulutan, there are 206.2 rainfall days, and 1242mm (48.9") of precipitation is accumulated.

Daylight

The average length of the day in April is 12h and 26min.
On the first day of the month, sunrise is at 05:49 and sunset at 18:05. On the last day of April, sunrise is at 05:32 and sunset at 18:09 CST.

Sunshine

The months with the most sunshine in Usulutan are April and July, with an average of 11.4h of sunshine.

UV index

The months with the highest UV index in Usulutan are January through September and December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the average person.
Note: The maximum UV index, 7 during April, leads to the following recommendations:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.