September weather forecast
Alugolla, Sri Lanka

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

Temperature

Alugolla notes an average high-temperature of a still moderately hot 29.5°C (85.1°F) in September, hardly diverging from August. Alugolla, in the month of September, anticipates a consistent average low-temperature of 21.1°C (70°F).

Heat index

The heat index value for September is computed to be a sweltering 35°C (95°F). Ensure extra safety steps, heat exhaustion and heat cramps are likely. Long activity might lead to heatstroke.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', arises from combining readings of air temperature and relative moisture content. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. When the body's heat gain surpasses its removal capacity, body temperature starts to climb, leading to potential heat-related ailments.

Humidity

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. In Alugolla, during the entire year, the rain falls for 278.4 days and collects up to 1466mm (57.72") of precipitation.

Daylight

The average length of the day in September is 12h and 10min.
On the first day of September in Alugolla, sunrise is at 05:59 and sunset at 18:13. On the last day of the month, sunrise is at 05:54 and sunset at 17:58 +0530.

Sunshine

In Alugolla, the average sunshine in September is 10.3h.

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 reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the average person.
Note: The maximum daily UV index, 6 in September, converts into the following recommendations:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.