May weather forecast
Selagama, Sri Lanka

The last month of the spring, May, is another tropical month in Selagama, Sri Lanka, with temperature in the range of an average high of 31.8°C (89.2°F) and an average low of 23°C (73.4°F).

Temperature

May denotes a minimal variation in the average high-temperature to a still hot 31.8°C (89.2°F) from April's 32.9°C (91.2°F). During the month of May, an average low-temperature of 23°C (73.4°F) is recorded.

Heat index

The heat index for May is estimated at an extremely hot 42°C (107.6°F). Take additional safety steps, risk of heat exhaustion and heat cramps is notable. Prolonged activity may cause heatstroke.
Heat index readings emphasize conditions of light breezes and shaded spots. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'apparent temperature' or 'feels like', provides an understanding of perceived warmth by combining temperature and relative humidity. 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. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. When there is an excess of moisture in the atmosphere, the efficiency of the evaporation process is lessened, leading to less efficient body cooling and a sensation of overheating. As the body accumulates more heat than it can release, body temperature goes up, increasing the risk of heat-related health issues.

Humidity

In Selagama, the average relative humidity in May is 77%.

Rainfall

In Selagama, during May, the rain falls for 21.6 days and regularly aggregates up to 117mm (4.61") of precipitation. Throughout the year, in Selagama, there are 217.7 rainfall days, and 1165mm (45.87") of precipitation is accumulated.

Daylight

In Selagama, the average length of the day in May is 12h and 28min.
On the first day of the month, sunrise is at 05:52 and sunset at 18:16. On the last day of May, sunrise is at 05:49 and sunset at 18:21 +0530.

Sunshine

The average sunshine in May is 10.7h.

UV index

The months with the highest UV index in Selagama, Sri Lanka, are March through September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the average person.
Note: In May, the UV index of 7 transforms into the following advice:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.