May weather forecast
Polgahawela, Sri Lanka

May, the last month of the spring in Polgahawela, is another tropical month, with temperature in the range of an average high of 30.1°C (86.2°F) and an average low of 21.8°C (71.2°F).

Temperature

In May, the average high-temperature registers at a still tropical 30.1°C (86.2°F), nearly identical to April's 31.2°C (88.2°F). During May, Polgahawela consistently records a temperature low averaging a pleasant 21.8°C (71.2°F).

Heat index

The heat index value for May is appraised at a very hot 38°C (100.4°F). Exercise increased caution, heat cramps and heat exhaustion are potential hazards. Continuous activity could lead to heatstroke.
The metrics for the heat index are tailored for both shady environments and light winds. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', comes about by integrating the temperature readings with the humidity levels. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
Perspiring is how the human body naturally cools down, as sweat's evaporation takes away excess heat. An increase in relative humidity disrupts body cooling by slowing the evaporation rate, thereby reducing the rate at which the body cools and amplifying the sense of heat. Elevated heat gain compared to the body's release capability poses risks of dehydration and potential overheating.

Humidity

In May, the average relative humidity is 80%.

Rainfall

In Polgahawela, Sri Lanka, during May, the rain falls for 28.6 days and regularly aggregates up to 163mm (6.42") of precipitation. Throughout the year, in Polgahawela, Sri Lanka, there are 278.4 rainfall days, and 1466mm (57.72") of precipitation is accumulated.

Daylight

The average length of the day in May is 12h and 28min.
On the first day of May, sunrise is at 05:54 and sunset at 18:17. On the last day of the month, sunrise is at 05:50 and sunset at 18:22 +0530.

Sunshine

The average sunshine in May in Polgahawela is 10.4h.

UV index

The months with the highest UV index in Polgahawela, Sri Lanka, are January through September, November and December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: A maximum daily UV index of 6 during May morphs into the following directions:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.