May weather forecast
Ja-Ela, Sri Lanka

The last month of the spring, May, is also a hot month in Ja-Ela, Sri Lanka, with an average temperature fluctuating between 30.8°C (87.4°F) and 26.4°C (79.5°F).

Temperature

Ja-Ela experiences an average high-temperature of a still tropical 30.8°C (87.4°F) in May, subtly different from April's 32°C (89.6°F). A consistent average low-temperature of 26.4°C (79.5°F), with a minor variance from the daytime highs, is noted during the nights of May.

Heat index

May's average heat index is computed to be a blisteringly hot 40°C (104°F). Implement additional safety measures to avoid heat cramps and heat exhaustion. Persistent activity might trigger heatstroke.
Understand that the heat index values take into account shaded locations and mild winds. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'real feel' or 'felt air temperature', binds temperature metrics with humidity values to give a sense of the actual warmth. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. 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. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
Sweat evaporation, driven by perspiration, is the method the human body uses to rid itself of 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. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.

Humidity

In May, the average relative humidity is 80%.

Rainfall

In May, the rain falls for 26.3 days. Throughout May, 204mm (8.03") of precipitation is accumulated. In Ja-Ela, during the entire year, the rain falls for 265.4 days and collects up to 1744mm (68.66") of precipitation.

Daylight

In May, the average length of the day in Ja-Ela, Sri Lanka, is 12h and 27min.
On the first day of May in Ja-Ela, Sri Lanka, 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 18:23 +0530.

Sunshine

In Ja-Ela, Sri Lanka, the average sunshine in May is 8.8h.

UV index

The months with the lowest UV index are May, June, August and October, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: An average UV index of 6 in May transforms into this advice:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.