September weather forecast
Mihintale, Sri Lanka

The first month of the autumn, September, is still a hot month in Mihintale, Sri Lanka, with an average temperature varying between 24.8°C (76.6°F) and 32.6°C (90.7°F).

Temperature

September welcomes an average high-temperature of a still tropical 32.6°C (90.7°F), not much different from the preceding month. In September, Mihintale experiences a temperature dip to an average of 24.8°C (76.6°F) at night.

Heat index

For most parts of September, the heat index is evaluated at a blistering 43°C (109.4°F). Remain alert: Heat exhaustion and heat cramps are predicted. Extended effort can lead to heatstroke.
Heat index details are generally centered around shaded locations and a mild breeze. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. When the air holds a significant amount of moisture, the efficiency of the evaporation process is decreased, preventing the body from cooling down efficiently, leading to the sensation of overheating. When body heat isn't effectively managed, risks of dehydration and overheating amplify.

Humidity

The months with the lowest humidity are July through September, with an average relative humidity of 71%.

Rainfall

In Mihintale, in September, during 14 rainfall days, 57mm (2.24") of precipitation is typically accumulated. Throughout the year, there are 199.1 rainfall days, and 893mm (35.16") of precipitation is accumulated.

Daylight

In September, the average length of the day is 12h and 10min.
On the first day of the month, sunrise is at 05:59 and sunset at 18:16. On the last day of September, sunrise is at 05:56 and sunset at 17:59 +0530.

Sunshine

The average sunshine in September is 9.6h.

UV index

The months with the highest UV index in Mihintale are February through September, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily maximum UV index of 7 in September interprets into the following advice:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.