April weather forecast
Poás, Costa Rica

April in Poás, Costa Rica is characterized by a fully-fledged wet season. Marked by higher night temperatures and rainfall, the month experiences a dip in wind speed. The highly distinguishing feature of April is the maximum precipitation of 86mm (3.39"), indicating the month as the beginning of the peak rainy season. The weather pattern observed in April sets the stage for even more concentrated rainfall and higher humidity in May.

Temperature

March and April, when the average high-temperature in Poás, Costa Rica, reaches 29.7°C (85.5°F), are the warmest months.

Heat index

In April, the average heat index is estimated at a sweltering 35°C (95°F). Extra precautions are necessary, heat cramps and heat exhaustion are plausible outcomes. Extended activity could lead to heatstroke.
Heat index determinations are made taking into account the shade and light air movements. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', arises from combining readings of air temperature and relative moisture content. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
To offset high temperatures, the human body releases sweat which, upon evaporation, cools it down. 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. Overheating dangers loom when the body's heat release mechanisms are overshadowed by excessive gain.

Humidity

In Poás, the average relative humidity in April is 73%.

Rainfall

In Poás, in April, it is raining for 20 days, with typically 86mm (3.39") of accumulated precipitation. In Poás, during the entire year, the rain falls for 272 days and collects up to 2217mm (87.28") of precipitation.

Daylight

In April, the average length of the day in Poás is 12h and 22min.
On the first day of April in Poás, Costa Rica, sunrise is at 05:33 and sunset at 17:47. On the last day of the month, sunrise is at 05:19 and sunset at 17:48 CST.

Sunshine

The average sunshine in April is 9.1h.

UV index

January through April, June, July, September, October and December, with an average maximum UV index of 6, are months with the highest UV index in Poás. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the average person.
Note: In April, a regular UV index of 6 translates into these guidelines:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.