September weather forecast
Kengalla, Sri Lanka

The first month of the autumn, September, is still a warm month in Kengalla, Sri Lanka, with temperature in the range of an average high of 29.4°C (84.9°F) and an average low of 21°C (69.8°F).

Temperature

September's onset records an average high-temperature of a still warm 29.4°C (84.9°F), a near match to August's 29.2°C (84.6°F). In Kengalla, an average low-temperature of 21°C (69.8°F) is recorded during September nights.

Heat index

The average heat index in September is estimated at a fiery hot 35°C (95°F). Extra safeguards are necessary to prevent heat exhaustion and heat cramps. Prolonged activity might cause heatstroke.
Always consider that heat index estimations are for light winds and places in the shade. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'felt air temperature' or 'feels like', comes about by integrating the temperature readings with the humidity levels. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. Greater relative humidity lessens the rate of evaporation, thus decreasing the body's heat dispersal, which gives rise to a sensation of overheating. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.

Humidity

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

Rainfall

In September, in Kengalla, the rain falls for 23.9 days. Throughout September, 129mm (5.08") of precipitation is accumulated. Throughout the year, there are 278.9 rainfall days, and 1477mm (58.15") of precipitation is accumulated.

Daylight

In Kengalla, the average length of the day in September is 12h and 10min.
On the first day of September in Kengalla, 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 17:58 +0530.

Sunshine

In Kengalla, Sri Lanka, the average sunshine in September is 9.9h.

UV index

The months with the highest UV index 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 threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In September, a daily maximum UV index of 6 leads to the following instructions:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. 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. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.