April weather forecast
Guarumal, Costa Rica

April, the same as March, in Guarumal, Costa Rica, is another tropical spring month, with an average temperature varying between 26.2°C (79.2°F) and 30.4°C (86.7°F).

Temperature

Guarumal, Costa Rica, witnesses the warmest weather in April, with temperatures averaging a high of 30.4°C (86.7°F) and a low of 26.2°C (79.2°F).

Heat index

The average heat index in April is estimated at a torrid 36°C (96.8°F). Undertake enhanced precautions, heat exhaustion and heat cramps are possible risks. Continuous activity could trigger heatstroke.
Take note of the fact that heat index values are based on shaded circumstances with light airflows. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. When exposed to direct sunlight, it's possible for the heat index to increase by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
The physiological way the human body responds to excessive heat is by inducing perspiration, using sweat evaporation as a cooling mechanism. Heightened relative humidity interferes with the body's usual cooling mechanism by reducing evaporation, subsequently decreasing the body's cooling rate and increasing the sensation of heat. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.

Humidity

In April, the average relative humidity in Guarumal, Costa Rica, is 71%.

Rainfall

In Guarumal, in April, during 20.3 rainfall days, 68mm (2.68") of precipitation is typically accumulated. Throughout the year, there are 236.2 rainfall days, and 1501mm (59.09") of precipitation is accumulated.

Daylight

In Guarumal, the average length of the day in April is 12h and 21min.
On the first day of the month, sunrise is at 05:34 and sunset at 17:48. On the last day of April, in Guarumal, sunrise is at 05:20 and sunset at 17:48 CST.

Sunshine

In April, the average sunshine in Guarumal is 9.4h.

UV index

The months with the highest UV index are January through December, with an average maximum UV index of 7. The months with the lowest UV index in Guarumal are January through December, 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 radiation for the average person.
Note: In April, the maximum UV index of 7 translates into these guidelines:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. Tightly woven clothing, when worn loosely, shields effectively against the Sun.