May weather forecast
Welikanda, Sri Lanka

May, the last month of the spring in Welikanda, is another tropical month, with an average temperature varying between 34.2°C (93.6°F) and 24.5°C (76.1°F).

Temperature

With May's arrival, Welikanda notes an average high-temperature of a still hot 34.2°C (93.6°F), closely following the trend of the preceding month. An average low-temperature of 24.5°C (76.1°F) is noted in Welikanda during the month of May.

Heat index

For May, the heat index is estimated at a life-threatening hot 49°C (120.2°F). Be wary: Heat exhaustion and heat cramps are highly anticipated. With continued activity, heatstroke is very likely.
Data suggests that the heat index is set for environments in shade and with a light wind. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'apparent temperature' or 'feels like', evaluates the perceived heat by adding the effect of moisture in the air. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.
The physiological response of the human body to excess warmth is to perspire, thereby cooling itself through sweat evaporation. Under high air temperature coupled with high humidity (high heat index), the body's perspiration is reduced, intensifying the sensation of heat. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.

Humidity

In May, the average relative humidity is 72%.

Rainfall

In Welikanda, in May, during 17.4 rainfall days, 83mm (3.27") of precipitation is typically accumulated. Throughout the year, in Welikanda, Sri Lanka, there are 196.8 rainfall days, and 943mm (37.13") of precipitation is accumulated.

Daylight

In Welikanda, the average length of the day in May is 12h and 29min.
On the first day of the month, sunrise is at 05:49 and sunset at 18:14. On the last day of May, in Welikanda, sunrise is at 05:46 and sunset at 18:19 +0530.

Sunshine

In Welikanda, the average sunshine in May is 11.2h.

UV index

The months with the highest UV index in Welikanda are February through October, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for the ordinary person.
Note: During May, 7 as the daily maximum UV index converts into the following advice:
Take precautions against overexposure. Protection against sun damage is needed. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. Enhance your sun protection with tightly woven, yet airy clothing.