September weather forecast
Piliyandala, Sri Lanka

September, the first month of the autumn in Piliyandala, is also a moderately hot month, with an average temperature ranging between max 28.9°C (84°F) and min 25.2°C (77.4°F).

Temperature

With the transition into September, Piliyandala notes an average high-temperature of a still warm 28.9°C (84°F), closely resembling August. Piliyandala's nights throughout September are marked by an average low temperature of 25.2°C (77.4°F), a minor drop from the day's high.

Heat index

The heat index for September is evaluated at a sweltering 35°C (95°F). Exercise more precautions, heat cramps and heat exhaustion are potential risks. Continuous activity could precipitate heatstroke.
Consider that heat index readings are for situations in the shade and light wind. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', melds the effects of warmth and moisture to generate a feeling of heat. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.
To offset high temperatures, the human body releases sweat which, upon evaporation, cools it down. An increase in relative humidity hinders the body's normal cooling function by reducing evaporation, thereby decreasing the rate of body cooling and enhancing the sense of warmth. The body is at risk of dehydration and related complications when it fails to shed excessive heat.

Humidity

In Piliyandala, Sri Lanka, the average relative humidity in September is 82%.

Rainfall

In Piliyandala, during September, the rain falls for 24.3 days and regularly aggregates up to 189mm (7.44") of precipitation. In Piliyandala, during the entire year, the rain falls for 272.3 days and collects up to 2039mm (80.28") of precipitation.

Daylight

In Piliyandala, the average length of the day in September is 12h and 10min.
On the first day of September, 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 18:02 +0530.

Sunshine

The average sunshine in September in Piliyandala, Sri Lanka, is 7.5h.

UV index

The months with the highest UV index in Piliyandala, Sri Lanka, are January through April, July, September, November and December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the average person.
Note: In September, a daily UV index of 7 turns into the following recommendations:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.