September weather forecast
Palkumbura, Sri Lanka

September, the first month of the autumn in Palkumbura, is still a warm month, with an average temperature fluctuating between 21.1°C (70°F) and 29.5°C (85.1°F).

Temperature

With the transition into September, Palkumbura notes an average high-temperature of a still warm 29.5°C (85.1°F), closely resembling August. Throughout September, the temperature in Palkumbura, Sri Lanka, tends to fall to a consistent average low of 21.1°C (70°F).

Heat index

In September, the heat index is evaluated at a torrid 35°C (95°F). Exercise extra preventive actions, heat cramps and heat exhaustion are plausible. Continuous activity could result in heatstroke.
Keep in mind the heat index values are meant for areas in shade and with light wind. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. 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. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
Evaporating sweat, an outcome of perspiration, is key in assisting the human body to moderate its temperature. In the presence of abundant moisture in the atmosphere, the cooling process through evaporation is hindered, causing the body to feel excessively warm. As the body accumulates more heat than it can release, body temperature goes up, increasing the risk of heat-related health issues.

Humidity

In September, the average relative humidity is 77%.

Rainfall

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

Daylight

In Palkumbura, Sri Lanka, the average length of the day in September is 12h and 10min.
On the first day of September, sunrise is at 06:01 and sunset at 18:16. On the last day of the month, sunrise is at 05:57 and sunset at 18:01 +0530.

Sunshine

In Palkumbura, 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 value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: An average UV index of 6 in September transforms into this advice:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Stay sun-safe with clothing that is both closely woven and worn loosely.