May weather forecast
Gehenuwala, Sri Lanka

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

Temperature

As April turns into May, the average high-temperatures rest at a still hot 30.6°C (87.1°F), showing a minor variation from the prior month. Gehenuwala records a mild decrease in temperature during the nights of May, averaging a warm 26.3°C (79.3°F).

Heat index

The heat index value for May is calculated to be a blisteringly hot 40°C (104°F). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.
For clarity, heat index numbers account for light winds and areas under shade. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', shows a temperature sensation when both heat and moisture conditions are combined. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Juveniles are regularly less conscious of the need to recuperate and rehydrate. Thirst is a tardy symptom of dehydration - hydration, especially during lengthy physical activities, should be maintained.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. When there is abundant moisture in the air, the body's cooling through the evaporation process becomes less effective, leading to the sensation of overheating. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.

Humidity

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

Rainfall

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

Daylight

In Gehenuwala, Sri Lanka, the average length of the day in May is 12h and 26min.
On the first day of the month, sunrise is at 05:55 and sunset at 18:17. On the last day of May, in Gehenuwala, sunrise is at 05:52 and sunset at 18:22 +0530.

Sunshine

The average sunshine in May in Gehenuwala 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 Gehenuwala. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the average person.
Note: The daily high UV index of 6 in May translates into this advice:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.