April weather forecast
Lunuwila, Sri Lanka

April, like March, is another tropical spring month in Lunuwila, Sri Lanka, with an average temperature ranging between max 32°C (89.6°F) and min 26°C (78.8°F).

Temperature

The transition into April notes an average high-temperature of a still hot 32°C (89.6°F), revealing a mild distinction from the 32.1°C (89.8°F) in March. During April, an average low-temperature of 26°C (78.8°F) is observed.

Heat index

The average heat index in April is estimated at a scorching 43°C (109.4°F). Be on the lookout: Heat cramps and heat exhaustion are anticipated. Continued exertion can result in heatstroke.
When assessing, remember that heat index measurements are for light winds and shaded spots. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Younglings frequently fail to recognize the requirement to rest and rehydrate. Thirst emerges late in dehydration - it is imperative to keep hydration levels high, particularly during extended physical exertions.
The body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. When air moisture content is high, the cooling process through evaporation is not as efficient, leading to an ineffective body cooling process and a feeling of overheating. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.

Humidity

In April, the average relative humidity is 77%.

Rainfall

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

Daylight

In Lunuwila, the average length of the day in April is 12h and 17min.
On the first day of April, sunrise is at 06:08 and sunset at 18:20. On the last day of the month, sunrise is at 05:56 and sunset at 18:19 +0530.

Sunshine

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

UV index

January through April, July, September, November and December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for average individuals.
Note: In April, the maximum UV index of 7 suggests this advice:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.