August weather forecast
Polonnaruwa, Sri Lanka

August, the last month of the summer in Polonnaruwa, is another hot month, with an average temperature ranging between max 33.7°C (92.7°F) and min 24.3°C (75.7°F).

Temperature

In August, the average high-temperature is practically the same as in July - a still tropical 33.7°C (92.7°F). In Polonnaruwa, the average low-temperature is 24.3°C (75.7°F).

Heat index

The average heat index in August is computed to be a scorching 44°C (111.2°F). Beware: Heat cramps and heat exhaustion are very likely. Heatstroke is imminent with prolonged activity.
Note that heat index values are valued for light wind and location in the shade. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'feels like', 'real feel', or 'felt air temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Additional factors like activity, clothing, differences in body mass, height, and shape, and metabolic differences affect individual temperature impact. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

The months with the lowest humidity in Polonnaruwa, Sri Lanka, are June through September, with an average relative humidity of 67%.

Rainfall

In August, the rain falls for 11.5 days. Throughout August, 29mm (1.14") of precipitation is accumulated. Throughout the year, in Polonnaruwa, there are 196.8 rainfall days, and 943mm (37.13") of precipitation is accumulated.

Daylight

In Polonnaruwa, the average length of the day in August is 12h and 23min.
On the first day of August, sunrise is at 05:58 and sunset at 18:26. On the last day of the month, sunrise is at 05:58 and sunset at 18:14 +0530.

Sunshine

The average sunshine in August is 9.6h.

UV index

The months with the highest UV index in Polonnaruwa are February through October, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In August, the average maximum UV index of 7 translate into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.