April weather forecast
Pannala, Sri Lanka

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

Temperature

April's onset records an average high-temperature of a still tropical 32°C (89.6°F), a near match to March's 32.1°C (89.8°F). The average temperature in Pannala during April nights dips to a moderately hot 26°C (78.8°F).

Heat index

During April, the heat index is computed to be a blisteringly hot 43°C (109.4°F). Take caution: Heat exhaustion and heat cramps are probable. Heatstroke may be imminent with ongoing effort.
Be advised, the heat index considers values for conditions in shade and with a light breeze. 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', ties air temperature with relative humidity to produce the perceived temperature sensation. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
Evaporating sweat, an outcome of perspiration, is key in assisting the human body to moderate its temperature. Excessive relative humidity disturbs the body's typical cooling process by reducing evaporation, leading to a decrease in body cooling rate and an increase in the sensation of warmth. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

The average relative humidity in April is 77%.

Rainfall

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

Daylight

In April, the average length of the day in Pannala 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 18:18 +0530.

Sunshine

January through April, with an average of 9.2h of sunshine, are months with the most 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 health vulnerability from unsafe exposure to UV radiation for the average person.
Note: The UV index of 7 during April translates into the following guidance:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.