May weather forecast
Pooneryn, Sri Lanka

The last month of the spring, May, is another tropical month in Pooneryn, Sri Lanka, with an average temperature fluctuating between 30.3°C (86.5°F) and 29°C (84.2°F).

Temperature

During May, the average high-temperature is a still hot 30.3°C (86.5°F), maintaining a close resemblance to that of the preceding month. In Pooneryn, May is characterized by an average low-temperature of 29°C (84.2°F), indicating a minor drop from daytime highs.

Heat index

The heat index for May is calculated to be a sweltering 38°C (100.4°F). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.
Note that heat index values are valued for light wind and location in the shade. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'real feel' or 'feels like', determines the feeling of heat when you account for the relative humidity. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. 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.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. With higher relative humidity, the rate of evaporation is reduced, resulting in increased heat retention in the body compared to drier air. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.

Humidity

May, August and September, with an average relative humidity of 79%, are the most humid months in Pooneryn.

Rainfall

In Pooneryn, in May, during 6.9 rainfall days, 26mm (1.02") of precipitation is typically accumulated. Throughout the year, there are 148.6 rainfall days, and 769mm (30.28") of precipitation is accumulated.

Daylight

In Pooneryn, the average length of the day in May is 12h and 34min.
On the first day of the month, sunrise is at 05:52 and sunset at 18:20. On the last day of May, in Pooneryn, Sri Lanka, sunrise is at 05:47 and sunset at 18:26 +0530.

Sunshine

The average sunshine in May in Pooneryn is 11.5h.

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 estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for average individuals.
Note: The daily high UV index of 7 during May translates into the following recommendations:
Inhibit overexposure. Warding off sun damage is of utmost importance. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.