September weather forecast
Dunagaha, Sri Lanka

The first month of the autumn, September, is still a warm month in Dunagaha, Sri Lanka, with temperature in the range of an average high of 29.5°C (85.1°F) and an average low of 25.2°C (77.4°F).

Temperature

September's onset sees an average high-temperature of a still warm 29.5°C (85.1°F), exhibiting a slight fluctuation from the previous month. A slight dip in temperature to a still warm 25.2°C (77.4°F) marks the average nights during September.

Heat index

Throughout September, the heat index is calculated to be a fiery hot 36°C (96.8°F). Incorporate special precautions, risk of heat exhaustion and heat cramps is substantial. Sustained activity could cause heatstroke.
When referencing the heat index, its values are suitable for shady environments and light breezes. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
The natural method the human body uses to remove excess heat is by perspiring and letting sweat evaporate. When relative humidity increases, the body's capacity to evaporate heat decreases, leading to a heightened sense of warmth. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.

Humidity

In Dunagaha, the average relative humidity in September is 81%.

Rainfall

In Dunagaha, in September, during 24.4 rainfall days, 153mm (6.02") of precipitation is typically accumulated. Throughout the year, in Dunagaha, Sri Lanka, there are 265.4 rainfall days, and 1744mm (68.66") of precipitation is accumulated.

Daylight

The average length of the day in September is 12h and 10min.
On the first day of September in Dunagaha, Sri Lanka, sunrise is at 06:02 and sunset at 18:17. On the last day of the month, sunrise is at 05:58 and sunset at 18:01 +0530.

Sunshine

In September, the average sunshine in Dunagaha is 7.7h.

UV index

The months with the highest UV index are January through April, July, September, November and December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for average individuals.
Note: The daily high UV index of 7 during September translates into the following recommendations:
Resist overexposure. Safeguarding from solar damage is indispensable. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.