April weather forecast
Aladeniya, Sri Lanka

April, the same as March, in Aladeniya, Sri Lanka, is a hot spring month, with an average temperature fluctuating between 31.2°C (88.2°F) and 20.8°C (69.4°F).

Temperature

The onset of April brings with it an average high-temperature of a still tropical 31.2°C (88.2°F), showing a negligible variation from the month before. An average nighttime temperature of 20.8°C (69.4°F) is observed during April.

Heat index

In April, the heat index is calculated to be a blistering 41°C (105.8°F). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.
Consider that heat index readings are for situations in the shade and light wind. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
The body's self-cooling mechanism is rooted in perspiration, where evaporating sweat cools down excessive warmth. In the presence of high relative humidity, the evaporation rate diminishes, resulting in the body retaining more warmth compared to dry conditions. When the body's heat gain surpasses its removal capacity, body temperature starts to climb, leading to potential heat-related ailments.

Humidity

The average relative humidity in April in Aladeniya is 79%.

Rainfall

In Aladeniya, Sri Lanka, in April, it is raining for 27 days, with typically 152mm (5.98") of accumulated precipitation. In Aladeniya, 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 in Aladeniya is 12h and 17min.
On the first day of April in Aladeniya, 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 Aladeniya, the average sunshine in April is 9.4h.

UV index

The months with the highest UV index are January through September, November and December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for the average person.
Note: The maximum UV index, 6 during April, leads to the following recommendations:
Deflect overexposure. Sun protection is a necessity. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.