April weather forecast
Kollupitiya, Sri Lanka

April, the same as March, in Kollupitiya, Sri Lanka, is another hot spring month, with an average temperature varying between 31.8°C (89.2°F) and 25.8°C (78.4°F).

Temperature

March and April bring Kollupitiya's highest average temperatures, reaching a high of 31.8°C (89.2°F).

Heat index

The heat index for April is evaluated at a blisteringly hot 42°C (107.6°F). Extra precautions are necessary, heat cramps and heat exhaustion are plausible outcomes. Extended activity could lead to heatstroke.
Take note of the fact that heat index values are based on shaded circumstances with light airflows. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', combines both the air temperature and the humidity level to give a perceived human temperature. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
The natural cooling mechanism in humans involves perspiration, where the evaporation of sweat balances out excessive warmth. Increased relative humidity slows down evaporation, thereby decreasing the rate of heat removal from the body, culminating in a sensation of overheating. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.

Humidity

In Kollupitiya, the average relative humidity in April is 77%.

Rainfall

In Kollupitiya, in April, it is raining for 25.4 days, with typically 137mm (5.39") of accumulated precipitation. Throughout the year, in Kollupitiya, there are 289.4 rainfall days, and 2262mm (89.06") of precipitation is accumulated.

Daylight

In April, the average length of the day in Kollupitiya, Sri Lanka, is 12h and 17min.
On the first day of April, sunrise is at 06:08 and sunset at 18:20. On the last day of the month, sunrise is at 05:56 and sunset at 18:18 +0530.

Sunshine

In April, the average sunshine in Kollupitiya is 8.9h.

UV index

The months with the highest UV index are January through April, July, September, November and December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: In April, the maximum UV index of 7 suggests this advice:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.