September weather forecast
Radawadunna, Sri Lanka

September, the first month of the autumn in Radawadunna, is also a moderately hot month, with an average temperature ranging between max 29.5°C (85.1°F) and min 25.2°C (77.4°F).

Temperature

The arrival of September coincides with an average high-temperature of a still warm 29.5°C (85.1°F), indicating a minimal shift from August's 29.3°C (84.7°F). Radawadunna's nighttime temperatures in September see a subtle dip to an average of 25.2°C (77.4°F).

Heat index

The average heat index in September is evaluated at a very hot 36°C (96.8°F). Incorporate extra safety measures to avoid heat exhaustion and heat cramps. Continuous activity could provoke heatstroke.
Know that the heat index computations account for shaded terrains and slight winds. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. With excessive moisture in the atmosphere, the effectiveness of the evaporation process is decreased, causing the body to cool down less efficiently, leading to a sensation of overheating. Accumulating heat beyond the body's cooling measures leads to rising temperatures and potential ailments.

Humidity

In Radawadunna, the average relative humidity in September is 81%.

Rainfall

In Radawadunna, in September, during 24.4 rainfall days, 153mm (6.02") of precipitation is typically accumulated. In Radawadunna, during the entire year, the rain falls for 265.4 days and collects up to 1744mm (68.66") of precipitation.

Daylight

In September, the average length of the day 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 September, the average sunshine is 7.7h.

UV index

The months with the highest UV index 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 unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A maximum high daily UV index of 7 during September translates into the following directions:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Always opt for UVA and UVB-resistant sunglasses on radiant days.