April weather forecast
Udakanda, Sri Lanka

April, like March, is another tropical spring month in Udakanda, Sri Lanka, with an average temperature ranging between min 21.1°C (70°F) and max 30°C (86°F).

Temperature

As Udakanda welcomes April, the average high-temperature records at a still tropical 30°C (86°F), marking an insignificant deviation from the prior month. Udakanda's temperature in April lowers to a consistent average of 21.1°C (70°F) during the nights.

Heat index

For most parts of April, the heat index is computed to be a torrid 39°C (102.2°F). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.
Heat index's context suggests values are appropriate for shady areas and slight breezes. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
In high temperatures, perspiration kicks in, allowing the human body to cool down through the evaporation of sweat. When relative humidity is on the rise, it curtails evaporation, thereby reducing the heat elimination from the body and causing the feeling of being excessively hot. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.

Humidity

In Udakanda, the average relative humidity in April is 86%.

Rainfall

In Udakanda, Sri Lanka, during April, the rain falls for 29.4 days and regularly aggregates up to 248mm (9.76") of precipitation. In Udakanda, during the entire year, the rain falls for 317.7 days and collects up to 2467mm (97.13") of precipitation.

Daylight

The average length of the day in April is 12h and 16min.
On the first day of April, sunrise is at 06:05 and sunset at 18:16. On the last day of the month, sunrise is at 05:53 and sunset at 18:15 +0530.

Sunshine

April has the most sunshine of the year, with an average of 8.4h of sunshine.

UV index

The months with the highest UV index are January through August, November and December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: In April, a daily maximum UV index of 6 leads to the following instructions:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.