April weather forecast
Radawadunna, Sri Lanka

April, the same as March, in Radawadunna, Sri Lanka, is another hot spring month, with an average temperature ranging between min 26°C (78.8°F) and max 32°C (89.6°F).

Temperature

Entering April, Radawadunna's average high-temperature reads a still hot 32°C (89.6°F), indicating a close resemblance to the previous month's climate. In Radawadunna, an average low-temperature of 26°C (78.8°F) is recorded during April nights.

Heat index

The heat index value for April is evaluated at a blistering 43°C (109.4°F). Stay mindful: Heat exhaustion and heat cramps are likely. Heatstroke could follow extended physical effort.
Be advised, the heat index considers values for conditions in shade and with a light breeze. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', gives a temperature feeling by integrating air temperature and humidity. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are extremely significant for babies and toddlers. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
The evaporation of sweat is a natural cooling mechanism of the human body, facilitated by perspiration. Elevated relative humidity disrupts typical body cooling by reducing the evaporation rate, consequently decreasing the body's cooling rate and enhancing the feeling of heat. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.

Humidity

In Radawadunna, the average relative humidity in April is 77%.

Rainfall

In Radawadunna, in April, it is raining for 23.4 days, with typically 112mm (4.41") of accumulated precipitation. In Radawadunna, during the entire year, the rain falls for 265.4 days and collects up to 1744mm (68.66") of precipitation.

Daylight

The average length of the day in April is 12h and 17min.
On the first day of the month, sunrise is at 06:07 and sunset at 18:19. On the last day of April, sunrise is at 05:55 and sunset at 18:17 +0530.

Sunshine

The months with the most sunshine are January through April, with an average of 9.2h of sunshine.

UV index

The months with the highest UV index in Radawadunna, Sri Lanka, are January through April, July, September, November and December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the average person.
Note: A maximum UV index of 7 in April translates into the following recommendations:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.