April weather forecast
Rakwana, Sri Lanka

April, the same as March, in Rakwana, Sri Lanka, is another hot spring month, with temperature in the range of an average high of 30°C (86°F) and an average low of 21.1°C (70°F).

Temperature

The onset of April brings an average high-temperature of a still hot 30°C (86°F), nearly matching the March temperature. Rakwana experiences a nighttime temperature average of 21.1°C (70°F) during April.

Heat index

April's heat index is computed to be a very hot 39°C (102.2°F). Adopt heightened safety measures, heat cramps and heat exhaustion may occur. Sustained activity might cause heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a composite of temperature and humidity figures to convey how warm it feels. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.
For the human body, perspiration is the go-to method to regulate temperature, using sweat's evaporation to dissipate warmth. Augmented relative humidity impedes typical body cooling mechanisms by lowering the evaporation rate, resulting in decreased body cooling and an amplified perception of heat. Elevated heat gain compared to the body's release capability poses risks of dehydration and potential overheating.

Humidity

In Rakwana, the average relative humidity in April is 86%.

Rainfall

In Rakwana, in April, it is raining for 29.4 days, with typically 248mm (9.76") of accumulated precipitation. In Rakwana, during the entire year, the rain falls for 317.3 days and collects up to 2422mm (95.35") of precipitation.

Daylight

In Rakwana, the average length of the day in April is 12h and 16min.
On the first day of the month, sunrise is at 06:05 and sunset at 18:16. On the last day of April, in Rakwana, sunrise is at 05:54 and sunset at 18:15 +0530.

Sunshine

The month with the most sunshine is April, with an average of 8.4h of sunshine.

UV index

January through August, November and December, with an average maximum UV index of 6, are months with the highest UV index in Rakwana. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum UV index of 6 during April leads to these instructions:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.