May weather forecast
Wellampitiya, Sri Lanka

May, the last month of the spring in Wellampitiya, is another tropical month, with an average temperature fluctuating between 26.3°C (79.3°F) and 30.6°C (87.1°F).

Temperature

In May, Wellampitiya experiences a minor shift in meteorological conditions with average high-temperatures marked at a still hot 30.6°C (87.1°F), closely mirroring the climate in April. Wellampitiya registers a steady nighttime temperature averaging a warm 26.3°C (79.3°F) throughout May.

Heat index

During May, the heat index is estimated at an extremely hot 40°C (104°F). Take additional safety steps, risk of heat exhaustion and heat cramps is notable. Prolonged activity may cause heatstroke.
Be advised, the heat index considers values for conditions in shade and with a light breeze. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', joins air temperature with relative humidity to produce a temperature perception for humans. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are particularly relevant to babies and toddlers. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. Under high air temperature and high humidity (high heat index) conditions, the body's ability to perspire is compromised, increasing the sensation of heat. As body temperatures escalate without effective heat release, one might face dehydration threats.

Humidity

In Wellampitiya, the average relative humidity in May is 81%.

Rainfall

In Wellampitiya, during May, the rain falls for 28.8 days and regularly aggregates up to 306mm (12.05") of precipitation. In Wellampitiya, during the entire year, the rain falls for 289.4 days and collects up to 2262mm (89.06") of precipitation.

Daylight

In Wellampitiya, the average length of the day in May is 12h and 26min.
On the first day of May, sunrise is at 05:56 and sunset at 18:18. On the last day of the month, sunrise is at 05:53 and sunset at 18:23 +0530.

Sunshine

In Wellampitiya, Sri Lanka, the average sunshine in May is 8.6h.

UV index

The months with the lowest UV index in Wellampitiya are May, June, August and October, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: In May, a daily UV index of 6 turns into the following recommendations:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.