April weather forecast
Coto Brus, Costa Rica

April in Coto Brus marks the transition from the dry season to the rainy season. The climate remains warm while rainfall triples from 43mm (1.69") in March to 132mm (5.2"). This sudden shift in weather patterns brings freshness and vibrancy, painting the city with lush, green landscapes. It also heralds the period when agricultural activities take precedence, with farmers taking advantage of the abundant rainfall to cultivate the lands.

Temperature

Coto Brus's weather in April displays an average high-temperature of a still hot 30.8°C (87.4°F), showing minor disparity from March's 31.7°C (89.1°F). Coto Brus observes an average nighttime temperature of 22.4°C (72.3°F) during April.

Heat index

In April, the average heat index is evaluated at a torrid 39°C (102.2°F). Take more preventive steps, risk of heat exhaustion and heat cramps is elevated. Long activity may culminate in heatstroke.
It is worth noting that heat index values are gauged for conditions in the shade and light breezes. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
Perspiration and the resultant sweat evaporation are the body's natural thermostat, helping regulate temperature. Increased relative humidity interferes with body cooling by slowing the rate of evaporation, resulting in a slower body cooling rate and a heightened feeling of heat. When the body's heat gain surpasses its removal capacity, body temperature starts to climb, leading to potential heat-related ailments.

Humidity

In Coto Brus, the average relative humidity in April is 76%.

Rainfall

In April, the rain falls for 25.1 days. Throughout April, 132mm (5.2") of precipitation is accumulated. Throughout the year, in Coto Brus, Costa Rica, there are 309.5 rainfall days, and 2106mm (82.91") of precipitation is accumulated.

Daylight

In Coto Brus, the average length of the day in April is 12h and 20min.
On the first day of the month, sunrise is at 05:29 and sunset at 17:42. On the last day of April, sunrise is at 05:16 and sunset at 17:42 CST.

Sunshine

The average sunshine in April is 9h.

UV index

The months with the highest UV index are March through May, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum daily UV index, 7 in April, converts into the following recommendations:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Always opt for UVA and UVB-resistant sunglasses on radiant days.