May weather forecast
Radawadunna, Sri Lanka

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

Temperature

May's weather records an average high-temperature of a still hot 30.8°C (87.4°F), showing little deviation from April. Throughout May, Radawadunna observes a steady low-temperature average of 26.4°C (79.5°F), reflecting a minor dip from daytime highs.

Heat index

The average heat index in May is appraised at an extremely hot 40°C (104°F). Incorporate additional safety actions, heat cramps and heat exhaustion are possible. Long-term activity may induce heatstroke.
When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', offers an insight into how hot it feels when we factor in moisture content. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values hold particular significance for children. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
For the human body, perspiration is the go-to method to regulate temperature, using sweat's evaporation to dissipate warmth. A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.

Humidity

The average relative humidity in May is 80%.

Rainfall

In May, in Radawadunna, the rain falls for 26.3 days. Throughout May, 204mm (8.03") of precipitation is accumulated. Throughout the year, there are 265.4 rainfall days, and 1744mm (68.66") of precipitation is accumulated.

Daylight

In Radawadunna, Sri Lanka, the average length of the day in May is 12h and 27min.
On the first day of May in Radawadunna, sunrise is at 05:55 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 is 8.8h.

UV index

The months with the lowest UV index in Radawadunna are May, June, August and October, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In May, a regular UV index of 6 translates into these guidelines:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. Employ a wide-brim hat for potent defense against up to 50% of UV rays.