May weather forecast
Tanduvan, Sri Lanka

The last month of the spring, May, is also a hot month in Tanduvan, Sri Lanka, with temperature in the range of an average high of 31.2°C (88.2°F) and an average low of 28.1°C (82.6°F).

Temperature

May's advent notes a subtle adjustment in average high-temperature to a still tropical 31.2°C (88.2°F) from April. Tanduvan experiences an average nighttime temperature of 28.1°C (82.6°F) in May, reflecting a minor difference from the day's peak.

Heat index

Throughout May, the heat index is estimated at an extremely hot 40°C (104°F). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.
Heat index details are generally centered around shaded locations and a mild breeze. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'felt air temperature' or 'feels like', gives an indication of how one might feel in terms of heat after considering humidity. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
Perspiration is the body's default response to elevated temperatures, as it promotes the evaporation of sweat to achieve cooling. Higher relative humidity impedes evaporation, thus reducing heat dispersion from the body, culminating in a sensation of overheating. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.

Humidity

The average relative humidity in May is 77%.

Rainfall

In Tanduvan, Sri Lanka, in May, it is raining for 13.2 days, with typically 51mm (2.01") of accumulated precipitation. In Tanduvan, during the entire year, the rain falls for 181.2 days and collects up to 849mm (33.43") of precipitation.

Daylight

In May, the average length of the day is 12h and 32min.
On the first day of May, sunrise is at 05:50 and sunset at 18:17. On the last day of the month, sunrise is at 05:46 and sunset at 18:23 +0530.

Sunshine

In May, the average sunshine is 11.2h.

UV index

The months with the highest UV index are January through October and December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the average person.
Note: The UV index of 7 during May leads to these advisories:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.