May weather forecast
Aruppola, Sri Lanka

The last month of the spring, May, is another hot month in Aruppola, Sri Lanka, with an average temperature varying between 30.1°C (86.2°F) and 21.8°C (71.2°F).

Temperature

May's onset sees an average high-temperature of a still hot 30.1°C (86.2°F), exhibiting a slight fluctuation from the previous month. Throughout the nights in May, an average low-temperature of 21.8°C (71.2°F) is noted.

Heat index

During May, the heat index is evaluated at a torrid 38°C (100.4°F). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.
Note that heat index values are valued for light wind and location in the shade. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

In May, the average relative humidity is 80%.

Rainfall

In Aruppola, in May, during 28.6 rainfall days, 163mm (6.42") of precipitation is typically accumulated. In Aruppola, during the entire year, the rain falls for 278.4 days and collects up to 1466mm (57.72") of precipitation.

Daylight

The average length of the day in May is 12h and 28min.
On the first day of May in Aruppola, sunrise is at 05:52 and sunset at 18:16. On the last day of the month, sunrise is at 05:49 and sunset at 18:20 +0530.

Sunshine

In May, the average sunshine is 10.4h.

UV index

January through September, November and December, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for average individuals.
Note: An average UV index of 6 in May transforms into this advice:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Stay sun-safe with clothing that is both closely woven and worn loosely.