May weather forecast
Ambepussa, Sri Lanka

The last month of the spring, May, is another tropical month in Ambepussa, Sri Lanka, with an average temperature varying between 30.8°C (87.4°F) and 26.4°C (79.5°F).

Temperature

The arrival of May records an average high-temperature of a still hot 30.8°C (87.4°F), closely related to the 32°C (89.6°F) observed in April. Ambepussa upholds a consistent average temperature of 26.4°C (79.5°F) throughout the nights of May.

Heat index

May's heat index is calculated to be an extremely hot 40°C (104°F). Exercise more precautions, heat cramps and heat exhaustion are potential risks. Continuous activity could precipitate heatstroke.
Remember that heat index calculations are made for conditions in the shade with light wind. 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 'apparent temperature' or 'real feel', shows a temperature sensation when both heat and moisture conditions are combined. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are highly important for children. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
Evaporation of sweat is the main factor behind the cooling effect of perspiration in the human body. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. When the body's heat gain surpasses its removal capacity, body temperature starts to climb, leading to potential heat-related ailments.

Humidity

The average relative humidity in May is 80%.

Rainfall

In Ambepussa, in May, it is raining for 26.3 days, with typically 204mm (8.03") of accumulated precipitation. Throughout the year, there are 265.4 rainfall days, and 1744mm (68.66") of precipitation is accumulated.

Daylight

The average length of the day in May in Ambepussa is 12h and 27min.
On the first day of May in Ambepussa, sunrise is at 05:54 and sunset at 18:17. On the last day of the month, sunrise is at 05:51 and sunset at 18:22 +0530.

Sunshine

In May, the average sunshine in Ambepussa, Sri Lanka, is 8.8h.

UV index

May, June, August and October, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for average individuals.
Note: In May, a daily UV index of 6 turns into the following recommendations:
Stay clear of intense sun exposure. Solar protection is of utmost significance. 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. Always opt for UVA and UVB-resistant sunglasses on radiant days.