May weather forecast
Aluthgama, Sri Lanka

May, the last month of the spring in Aluthgama, is another hot month, with temperature in the range of an average low of 26.3°C (79.3°F) and an average high of 30.2°C (86.4°F).

Temperature

The shift from April to May is characterized by an average high-temperature of a still tropical 30.2°C (86.4°F), not significantly different from the 31.3°C (88.3°F) of April. May nights witness a slight temperature decrease, averaging at a moderately hot 26.3°C (79.3°F).

Heat index

The average heat index in May is calculated to be a very hot 39°C (102.2°F). Ensure additional precautions, heat exhaustion and heat cramps may be expected. Heatstroke could occur from sustained activity.
Research indicates the heat index considers values in shaded locales and with light winds. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a measure of how hot it feels when the actual air humidity is factored in. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
To achieve cooling, the human body employs perspiration, relying on the subsequent evaporation of sweat. When the level of relative humidity is elevated, evaporation diminishes, causing more warmth to be retained in the body than in dry air. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.

Humidity

In May, the average relative humidity in Aluthgama, Sri Lanka, is 81%.

Rainfall

In May, in Aluthgama, Sri Lanka, the rain falls for 28 days. Throughout May, 303mm (11.93") of precipitation is accumulated. Throughout the year, in Aluthgama, there are 273.8 rainfall days, and 2059mm (81.06") of precipitation is accumulated.

Daylight

In May, the average length of the day in Aluthgama 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

In Aluthgama, the average sunshine in May is 8.7h.

UV index

The months with the lowest UV index in Aluthgama, Sri Lanka, are May, June and August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum daily UV index, 6 in May, converts into the following recommendations:
Prevent overexposure. Protection from the sun's harmful effects is needed. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.