April weather forecast
Siyambalapitiya, Sri Lanka

April, the same as March, in Siyambalapitiya, Sri Lanka, is another hot spring month, with an average temperature varying between 31.2°C (88.2°F) and 20.8°C (69.4°F).

Temperature

With the transition into April, Siyambalapitiya notes an average high-temperature of a still hot 31.2°C (88.2°F), closely resembling March. Siyambalapitiya encounters a steady low-temperature average of 20.8°C (69.4°F) throughout the month of April.

Heat index

In April, the average heat index is evaluated at a blistering 41°C (105.8°F). Take more safety measures, heat exhaustion and heat cramps are potential outcomes. Persistent activity might lead to heatstroke.
It is essential to grasp that the heat index's numbers are for shade and light wind settings. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. When exposed to direct sunlight, it's possible for the heat index to increase by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
The human body keeps its cool primarily through perspiration, as this process enables sweat to evaporate, taking away the excess heat. Under high air temperature and high humidity (high heat index) conditions, the body's ability to perspire is compromised, increasing the sensation of heat. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.

Humidity

In Siyambalapitiya, Sri Lanka, the average relative humidity in April is 79%.

Rainfall

In Siyambalapitiya, during April, the rain falls for 27 days and regularly aggregates up to 152mm (5.98") of precipitation. Throughout the year, in Siyambalapitiya, there are 278.9 rainfall days, and 1477mm (58.15") of precipitation is accumulated.

Daylight

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

Sunshine

In Siyambalapitiya, the average sunshine in April is 9.4h.

UV index

January through September, November and December, with an average maximum UV index of 6, are months with the highest UV index in Siyambalapitiya, Sri Lanka. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: The average daily UV index of 6 in April transforms into the following instructions:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. 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. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.