May weather forecast
Hewagama, Sri Lanka

The last month of the spring, May, is another hot month in Hewagama, Sri Lanka, with temperature in the range of an average low of 26.3°C (79.3°F) and an average high of 30.6°C (87.1°F).

Temperature

May registers an average high-temperature of a still tropical 30.6°C (87.1°F), slightly varied from April's 31.8°C (89.2°F). In May, Hewagama temperatures settle at a low of 26.3°C (79.3°F) during the nights, reflecting a minor change from daytime highs.

Heat index

The heat index in May is computed to be a blisteringly hot 40°C (104°F). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.
Be aware that heat index ratings are designed for shaded locations and minor breezes. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. Augmented relative humidity impedes typical body cooling mechanisms by lowering the evaporation rate, resulting in decreased body cooling and an amplified perception of heat. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

The average relative humidity in May is 81%.

Rainfall

In May, the rain falls for 28.8 days. Throughout May, 306mm (12.05") of precipitation is accumulated. Throughout the year, in Hewagama, there are 289.4 rainfall days, and 2262mm (89.06") of precipitation is accumulated.

Daylight

The average length of the day in May is 12h and 26min.
On the first day of May in Hewagama, sunrise is at 05:56 and sunset at 18:18. On the last day of the month, sunrise is at 05:52 and sunset at 18:22 +0530.

Sunshine

In Hewagama, the average sunshine in May is 8.6h.

UV index

May, June, August and October, with an average maximum UV index of 6, are months with the lowest UV index in Hewagama. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the average person.
Note: An average UV index of 6 in May transforms into this advice:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.