May weather forecast
Delduwa, Sri Lanka

The last month of the spring, May, is another warm month in Delduwa, Sri Lanka, with temperature in the range of an average high of 29.5°C (85.1°F) and an average low of 26.7°C (80.1°F).

Temperature

The average high-temperature for May is a moderately hot 29.5°C (85.1°F), closely aligning with the temperature of the preceding month. Nighttime, during May, brings an average low of 26.7°C (80.1°F), a modest reduction from the day's peak.

Heat index

The heat index value for May is estimated at a torrid 36°C (96.8°F). Ensure extra safety measures, heat exhaustion and heat cramps are likely. Continuous activity might result in heatstroke.
One should be cognizant that the heat index values are tailored for shaded spots and mild winds. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'real feel' or 'apparent temperature', gives a temperature feeling by integrating air temperature and humidity. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful 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 natural cooling mechanism in humans involves perspiration, where the evaporation of sweat balances out excessive warmth. A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.

Humidity

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

Rainfall

The month with the most rainfall is May, when the rain falls for 27.7 days and typically aggregates up to 302mm (11.89") of precipitation.

Daylight

The average length of the day in May is 12h and 25min.
On the first day of the month, sunrise is at 05:56 and sunset at 18:17. On the last day of May, sunrise is at 05:53 and sunset at 18:21 +0530.

Sunshine

The average sunshine in May is 9h.

UV index

May and September, with an average maximum UV index of 6, are months with the lowest UV index in Delduwa, Sri Lanka. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the average person.
Note: The daily maximum UV index of 6 in May interprets into the following advice:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.