April weather forecast
Dambulla, Sri Lanka

As April ushers in, residents and visitors of Dambulla can experience the juxtaposition of climbing temperatures and heightened water vapors. The rainfall noticeably increases to 103mm (4.06"), with a greater number of rainy days compared to the past months. The atmospheric pressure dips slightly as the weather becomes more humid. Yet, despite the increased precipitation, there is an uptick in sunshine hours, allowing for bright sunny spells in between showers. The April weather creates a unique blend of warm showers and ample sunshine, a perfect reflection of tropical weather.

Temperature

Temperature readings in Dambulla reach their annual highs in April, averaging 34.9°C (94.8°F) and a minimum average of 23.5°C (74.3°F).

Heat index

April's average heat index is estimated at a life-threatening hot 52°C (125.6°F). Be wary: Heat exhaustion and heat cramps are highly anticipated. With continued activity, heatstroke is very likely.
It is important to note that the heat index values are for shaded areas and light wind scenarios. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', integrates the air's temperature and its humidity to showcase the felt temperature by people. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are of high significance for children. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. An upsurge in relative humidity affects normal body cooling mechanisms by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.

Humidity

In Dambulla, the average relative humidity in April is 73%.

Rainfall

In April, in Dambulla, the rain falls for 23.6 days. Throughout April, 103mm (4.06") of precipitation is accumulated. Throughout the year, in Dambulla, there are 196.8 rainfall days, and 943mm (37.13") of precipitation is accumulated.

Daylight

The average length of the day in April is 12h and 18min.
On the first day of the month, sunrise is at 06:04 and sunset at 18:17. On the last day of April, sunrise is at 05:52 and sunset at 18:16 +0530.

Sunshine

In Dambulla, the average sunshine in April is 10.1h.

UV index

The months with the highest UV index in Dambulla are February through October, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: In April, a daily maximum UV index of 7 leads to the following instructions:
Prevent overexposure. Protection from the sun's harmful effects is needed. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.