September weather forecast
Hunnasgiriya, Sri Lanka

September, the first month of the autumn in Hunnasgiriya, is still a warm month, 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

Transitioning into September, Hunnasgiriya records an average high-temperature of a still warm 29.5°C (85.1°F), almost identical to August's 29.2°C (84.6°F). Hunnasgiriya observes an average low-temperature of 21.1°C (70°F) during September nights.

Heat index

September's heat index is appraised at a torrid 35°C (95°F). Take additional safety steps, risk of heat exhaustion and heat cramps is notable. Prolonged activity may cause heatstroke.
It is crucial to understand that heat index figures are for shade and gentle wind conditions. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'real feel' or 'feels like', combines both the air temperature and the humidity level to give a perceived human temperature. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. 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.
Evaporating sweat, thanks to perspiration, acts as a natural air conditioner for the human body. Under conditions of high relative humidity, the rate of evaporation decreases. This results in the body retaining more heat than under conditions of dry air. Overheating dangers loom when the body's heat release mechanisms are overshadowed by excessive gain.

Humidity

In Hunnasgiriya, the average relative humidity in September is 77%.

Rainfall

In September, the rain falls for 23.4 days. Throughout September, 118mm (4.65") of precipitation is accumulated. Throughout the year, there are 278.4 rainfall days, and 1466mm (57.72") of precipitation is accumulated.

Daylight

The average length of the day in September in Hunnasgiriya is 12h and 10min.
On the first day of September in Hunnasgiriya, sunrise is at 05:58 and sunset at 18:14. On the last day of the month, sunrise is at 05:54 and sunset at 17:58 +0530.

Sunshine

In Hunnasgiriya, Sri Lanka, the average sunshine in September is 10.3h.

UV index

The months with the highest UV index in Hunnasgiriya are January through September, November and December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the average person.
Note: The average daily UV index of 6 in September transforms into the following instructions:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.