September weather forecast
Weliweriya West, Sri Lanka

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

Temperature

Weliweriya West registers an average high-temperature of a still moderately hot 29.1°C (84.4°F) at the commencement of September, closely related to the preceding month. Weliweriya West records a slight downturn to an average a still warm 24.9°C (76.8°F) during the nights of September.

Heat index

For most parts of September, the heat index is appraised at a torrid 35°C (95°F). Take more safety measures, heat exhaustion and heat cramps are potential outcomes. Persistent activity might lead to heatstroke.
Heat index readings emphasize conditions of light breezes and shaded spots. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is an aggregate value of air's warmth and moisture to show the human-felt temperature. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. When relative humidity is heightened, it slows the rate of evaporation, thereby decreasing the body's ability to shed heat and creating a sensation of overheating. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.

Humidity

The average relative humidity in September in Weliweriya West is 81%.

Rainfall

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

Daylight

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 05:57 and sunset at 18:01 +0530.

Sunshine

The average sunshine in September in Weliweriya West 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. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum daily UV index of 7 in September converts into the following recommendations:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.