April weather forecast
Kengalla, Sri Lanka

April, like March, is another tropical spring month in Kengalla, Sri Lanka, with an average temperature fluctuating between 31.2°C (88.2°F) and 20.8°C (69.4°F).

Temperature

With the start of April, Kengalla measures an average high-temperature of a still hot 31.2°C (88.2°F), not significantly differing from March's 31.5°C (88.7°F). Kengalla registers a consistent average low-temperature of 20.8°C (69.4°F) during April.

Heat index

The heat index in April is estimated at a blistering 41°C (105.8°F). Undertake enhanced precautions, heat exhaustion and heat cramps are possible risks. Continuous activity could trigger heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. 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 highly critical for babies and toddlers. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
Perspiration is essential for the human body; it facilitates cooling through the process of sweat evaporation. Under conditions of high temperature and humidity (enhanced heat index), sweat production is compromised, exacerbating the sensation of warmth. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.

Humidity

In Kengalla, the average relative humidity in April is 79%.

Rainfall

In Kengalla, Sri Lanka, during April, the rain falls for 27 days and regularly aggregates up to 152mm (5.98") of precipitation. In Kengalla, during the entire year, the rain falls for 278.9 days and collects up to 1477mm (58.15") of precipitation.

Daylight

In Kengalla, the average length of the day in April is 12h and 17min.
On the first day of the month, sunrise is at 06:05 and sunset at 18:16. On the last day of April, in Kengalla, sunrise is at 05:52 and sunset at 18:15 +0530.

Sunshine

In Kengalla, 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. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the average person.
Note: The UV index of 6 in April translates into these instructions:
Guard oneself from overexposure. Defence against sun injury is vital. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.