April weather forecast
Penideniya, Sri Lanka

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

Temperature

With the onset of April, a modest change to a still hot 31.2°C (88.2°F) from March's 31.5°C (88.7°F) is noted in high-temperature. Nighttime temperatures hover around an average low of 20.8°C (69.4°F) in April.

Heat index

Throughout April, the heat index is computed to be a scorching 41°C (105.8°F). Implement additional cautionary measures, heat cramps and heat exhaustion could occur. Prolonged activity might induce heatstroke.
The metrics for the heat index are tailored for both shady environments and light winds. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. When exposed to direct sunlight, it's possible for the heat index to increase by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
Perspiration is essential for the human body; it facilitates cooling through the process of sweat evaporation. Heightened relative humidity interferes with the body's usual cooling mechanism by reducing evaporation, subsequently decreasing the body's cooling rate and increasing the sensation of heat. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.

Humidity

The average relative humidity in April is 79%.

Rainfall

In Penideniya, during April, the rain falls for 27 days and regularly aggregates up to 152mm (5.98") of precipitation. Throughout the year, there are 278.9 rainfall days, and 1477mm (58.15") of precipitation is accumulated.

Daylight

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

Sunshine

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 of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for average individuals.
Note: The average daily UV index of 6 in April transforms into the following instructions:
Deter overexposure. Protecting against the sun's effects is essential. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.