April weather forecast
Dehianga, Sri Lanka

April, the same as March, in Dehianga, Sri Lanka, is another tropical spring month, with temperature in the range of an average low of 20.8°C (69.4°F) and an average high of 31.2°C (88.2°F).

Temperature

The arrival of April denotes a barely perceptible change in the average high-temperatures to a still hot 31.2°C (88.2°F) from March's 31.5°C (88.7°F). In Dehianga, the average low-temperature during the month of April is an agreeable 20.8°C (69.4°F).

Heat index

The heat index value for April is evaluated at a blisteringly hot 41°C (105.8°F). Undertake additional safety actions, risk of heat cramps and heat exhaustion is significant. Persistent activity may induce heatstroke.
Heat index's context suggests values are appropriate for shady areas and slight breezes. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', represents the fusion of temperature and moisture in the air to suggest how warm it feels. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance 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 way the human body responds to excessive heat is by inducing perspiration, using sweat evaporation as a cooling mechanism. An elevated level of relative humidity hinders evaporation, leading to decreased heat elimination from the body, inducing a sensation of excess heat. The body is at risk of dehydration and related complications when it fails to shed excessive heat.

Humidity

In Dehianga, the average relative humidity in April is 79%.

Rainfall

In Dehianga, in April, it is raining for 27 days, with typically 152mm (5.98") of accumulated precipitation. In Dehianga, Sri Lanka, during the entire year, the rain falls for 278.4 days and collects up to 1466mm (57.72") of precipitation.

Daylight

In April, the average length of the day is 12h and 17min.
On the first day of April in Dehianga, sunrise is at 06:05 and sunset at 18:17. On the last day of the month, sunrise is at 05:53 and sunset at 18:16 +0530.

Sunshine

In April, the average sunshine is 9.4h.

UV index

January through September, November and December, with an average maximum UV index of 6, are months with the highest UV index in Dehianga. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: In April, an average UV index of 6 transforms into the following instructions:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. To cut down UV radiation exposure by about half, sport a wide-brim hat.