September weather forecast
Dedigamuwa, Sri Lanka

September, the first month of the autumn in Dedigamuwa, is also a moderately hot month, with an average temperature ranging between max 29.1°C (84.4°F) and min 24.9°C (76.8°F).

Temperature

The commencement of September notes an average high-temperature of a still warm 29.1°C (84.4°F), exhibiting little difference from the previous month. Dedigamuwa's nocturnal readings in September exhibit minimal variation from the daytime temperatures, averaging at a still moderately hot 24.9°C (76.8°F).

Heat index

For most parts of September, the heat index is evaluated at a torrid 35°C (95°F). Implement enhanced safety actions, heat cramps and heat exhaustion could occur. Sustained activity might result in heatstroke.
When referencing the heat index, its values are suitable for shady environments and light breezes. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Kids frequently ignore the importance of taking a break and rehydrating. Thirst is a late symptom of dehydration - thus, it is crucial to stay hydrated, especially during long-lasting physical activities.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. Accumulating heat beyond the body's cooling measures leads to rising temperatures and potential ailments.

Humidity

The average relative humidity in September is 81%.

Rainfall

In Dedigamuwa, during September, the rain falls for 26.9 days and regularly aggregates up to 206mm (8.11") of precipitation. Throughout the year, there are 289.4 rainfall days, and 2262mm (89.06") of precipitation is accumulated.

Daylight

The average length of the day in September in Dedigamuwa 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 05:57 and sunset at 18:01 +0530.

Sunshine

The average sunshine in September in Dedigamuwa, Sri Lanka, is 7.4h.

UV index

January through April, July, September, November and December, with an average maximum UV index of 7, are months with the highest UV index in Dedigamuwa. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum UV index of 7 during September leads to these instructions:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. 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.