April weather forecast
Valaichchenai, Sri Lanka

April, like March, is a hot spring month in Valaichchenai, Sri Lanka, with an average temperature ranging between min 25.9°C (78.6°F) and max 31.8°C (89.2°F).

Temperature

The commencement of April notes an average high-temperature of a still tropical 31.8°C (89.2°F), exhibiting little difference from the previous month. Nighttime temperature lowers to an average of 25.9°C (78.6°F) in April.

Heat index

For most parts of April, the heat index is estimated at an extremely hot 42°C (107.6°F). More preventive actions are needed, risk of heat exhaustion and heat cramps is significant. Prolonged activity may trigger heatstroke.
Heat index details are generally centered around shaded locations and a mild breeze. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'apparent temperature' or 'feels like', gives a temperature feeling by integrating air temperature and humidity. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
Perspiring is the body's way of cooling down, particularly by allowing sweat to evaporate and take the heat with it. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.

Humidity

In April, the average relative humidity is 75%.

Rainfall

In Valaichchenai, during April, the rain falls for 19.1 days and regularly aggregates up to 57mm (2.24") of precipitation. Throughout the year, in Valaichchenai, there are 237.8 rainfall days, and 1259mm (49.57") of precipitation is accumulated.

Daylight

In Valaichchenai, the average length of the day in April is 12h and 18min.
On the first day of April, sunrise is at 06:01 and sunset at 18:13. On the last day of the month, sunrise is at 05:49 and sunset at 18:13 +0530.

Sunshine

In April, the average sunshine is 11.2h.

UV index

The months with the highest UV index are January through October, 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 rays for the ordinary person.
Note: The maximum daily UV index of 7 in April converts into the following recommendations:
Stay clear of intense sun exposure. Solar protection is of utmost significance. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.