September weather forecast
Sedawatta, Sri Lanka

The first month of the autumn, September, is also a moderately hot month in Sedawatta, Sri Lanka, with an average temperature varying between 24.9°C (76.8°F) and 29.1°C (84.4°F).

Temperature

The transition into September is marked with an average high-temperature of a still moderately hot 29.1°C (84.4°F), showing an insignificant shift from August's 28.9°C (84°F). Sedawatta sees a minor drop to an average minimum temperature of 24.9°C (76.8°F) during the night in the month of September.

Heat index

The heat index for September is estimated at a fiery hot 35°C (95°F). Emphasize additional safety, risk of heat cramps and heat exhaustion is high. Continuous activity might result in heatstroke.
It is crucial to understand that heat index figures are for shade and gentle wind conditions. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'real feel' or 'feels like', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.

Humidity

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

Rainfall

In September, in Sedawatta, the rain falls for 26.9 days. Throughout September, 206mm (8.11") of precipitation is accumulated. Throughout the year, there are 289.4 rainfall days, and 2262mm (89.06") of precipitation is accumulated.

Daylight

In September, the average length of the day in Sedawatta is 12h and 10min.
On the first day of September in Sedawatta, 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

In September, the average sunshine in Sedawatta, Sri Lanka, is 7.4h.

UV index

The months with the highest UV index in Sedawatta are January through April, July, September, November and December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In September, the maximum UV index of 7 transforms into these recommendations:
Inhibit overexposure. Warding off sun damage is of utmost importance. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.