September weather forecast
Polgolla, Sri Lanka

The first month of the autumn, September, is also a moderately hot month in Polgolla, Sri Lanka, with temperature in the range of an average low of 21.1°C (70°F) and an average high of 29.5°C (85.1°F).

Temperature

The advent of September sees the average high-temperature at a still moderately hot 29.5°C (85.1°F), subtly shifted from August's 29.2°C (84.6°F). Throughout September, the temperature falls to an average low of 21.1°C (70°F).

Heat index

The heat index value during September is estimated at a torrid 35°C (95°F). Special measures are necessary to avoid heat cramps and heat exhaustion. Persistent activity could result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'feels like' or 'real feel', binds temperature metrics with humidity values to give a sense of the actual warmth. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
Evaporating sweat, an outcome of perspiration, is key in assisting the human body to moderate its temperature. Under conditions of increased relative humidity, the evaporation rate lessens, causing the body to retain more heat than under less humid conditions. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.

Humidity

In September, the average relative humidity is 77%.

Rainfall

In Polgolla, in September, it is raining for 23.4 days, with typically 118mm (4.65") of accumulated precipitation. Throughout the year, there are 278.4 rainfall days, and 1466mm (57.72") of precipitation is accumulated.

Daylight

In Polgolla, the average length of the day in September is 12h and 10min.
On the first day of September, sunrise is at 05:59 and sunset at 18:14. On the last day of the month, sunrise is at 05:55 and sunset at 17:59 +0530.

Sunshine

In September, the average sunshine is 10.3h.

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 reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: A daily high UV index of 6 in September leads to these guidelines:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.