April weather forecast
Uppukkulam, Sri Lanka

April, like March, is a hot spring month in Uppukkulam, Sri Lanka, with an average temperature fluctuating between 27°C (80.6°F) and 31.4°C (88.5°F).

Temperature

The warmest temperatures occur during April, when averages reach a peak of 31.4°C (88.5°F) and a low of 27°C (80.6°F).

Heat index

April's average heat index is evaluated at a blistering 41°C (105.8°F). Preventive measures are required to mitigate the risk of heat cramps and heat exhaustion. Continuous activity may precipitate heatstroke.
Be aware that heat index ratings are designed for shaded locations and minor breezes. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', determines the feeling of heat when you account for the relative humidity. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
Perspiration, which is the evaporation of sweat, is a primary way the human body manages and dispels excessive warmth. When relative humidity is at high levels, the evaporation rate lessens, causing the body to keep more heat than it would in less humid conditions. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.

Humidity

In Uppukkulam, the average relative humidity in April is 76%.

Rainfall

In April, the rain falls for 15.3 days. Throughout April, 48mm (1.89") of precipitation is accumulated. Throughout the year, in Uppukkulam, there are 181.2 rainfall days, and 849mm (33.43") of precipitation is accumulated.

Daylight

The average length of the day in April in Uppukkulam, Sri Lanka, is 12h and 20min.
On the first day of April in Uppukkulam, Sri Lanka, sunrise is at 06:07 and sunset at 18:20. On the last day of the month, sunrise is at 05:54 and sunset at 18:20 +0530.

Sunshine

In Uppukkulam, the average sunshine in April is 10h.

UV index

The months with the highest UV index in Uppukkulam are January through October and December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum UV index of 7 during April translates into these guidelines:
Take precautions against overexposure. Protection against sun damage is needed. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.