Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
September
Weather in September
Temperature
As September unfolds, the average high-temperature reaches a still warm 29.4°C (84.9°F), hinting at a slight fluctuation from the previous month. During September, the average low-temperature is recorded at an agreeable 21°C (69.8°F).Heat index
September's average heat index is calculated to be a torrid 35°C (95°F). Greater safety measures are needed, risk of heat exhaustion and heat cramps is high. Continuous activity might trigger heatstroke.Heat index guidelines indicate values are for light wind scenarios and shaded regions. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a value derived by merging air temperature with the humidity to convey how the climate feels. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
Evaporating sweat, an outcome of perspiration, is key in assisting the human body to moderate its temperature. Under conditions of high temperature and humidity (enhanced heat index), sweat production is compromised, exacerbating the sensation of warmth. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.
Humidity
In Kandegedara, the average relative humidity in September is 77%.Rainfall
In September, the rain falls for 23.9 days. Throughout September, 129mm (5.08") of precipitation is accumulated. Throughout the year, there are 278.9 rainfall days, and 1477mm (58.15") of precipitation is accumulated.Daylight
In Kandegedara, the average length of the day in September is 12h and 10min.On the first day of the month, sunrise is at 06:01 and sunset at 18:16. On the last day of September, sunrise is at 05:57 and sunset at 18:00 +0530.
Sunshine
In September, the average sunshine is 9.9h.UV index
January through September, November and December, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for average individuals.Note: The UV index of 6 in September translates into these instructions:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot during September?
What is the average humidity in September?
How many days does it rain in September in Kandegedara?
How many hours of daylight does Kandegedara have in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
What is the month with the highest UV index in Kandegedara?
How high is the UV index in September?
Average temperature in September
Kandegedara, Sri Lanka
- Average high temperature in September: 29.4°C
The warmest month (with the highest average high temperature) is March (31.5°C).
The month with the lowest average high temperature is December (27.5°C).
- Average low temperature in September: 21°C
The months with the highest average low temperature are May and June (21.8°C).
The coldest month (with the lowest average low temperature) is February (18.1°C).
Average pressure in September
Kandegedara, Sri Lanka
- Average pressure in September: 1009.2mbar
The month with the highest atmospheric pressure is January (1011.8mbar).
The month with the lowest atmospheric pressure is June (1008.1mbar).
Average wind speed in September
Kandegedara, Sri Lanka
- Average wind speed in September: 10.6km/h
The windiest month (with the highest average wind speed) is June (13.5km/h).
The calmest month (with the lowest average wind speed) is April (4.7km/h).
Average humidity in September
Kandegedara, Sri Lanka
- Average humidity in September: 77%
The month with the highest relative humidity is December (84%).
The month with the lowest relative humidity is March (74%).
Average rainfall in September
Kandegedara, Sri Lanka
- Average rainfall in September: 129mm
The wettest month (with the highest rainfall) is October (301mm).
The driest month (with the least rainfall) is January (38mm).
Average rainfall days in September
Kandegedara, Sri Lanka
- Average rainfall days in September: 23.9 days
The month with the highest number of rainy days is May (28.6 days).
The month with the least rainy days is January (14.1 days).
Average daylight in September /
Average sunshine in September
Kandegedara, Sri Lanka
- Average daylight in September: 12h and 1min
The month with the longest days is June (Average daylight: 12h and 30min).
The month with the shortest days is December (Average daylight: 11h and 42min).
- Average sunshine in September: 9h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in September
Kandegedara, Sri Lanka
- Average sunshine days in September: 3.6 days
The month with the most sunshine days is January (14.8 days).
The month with the least sunshine days is May (1.2 days).
Average UV index in September
Kandegedara, Sri Lanka
- Average UV index in September: 6
The months with the highest UV index are January, February, March, April, May, June, July, August, September, November and December (UV index 6).
The month with the lowest UV index is October (UV index 5).
Average cloud cover in September
Kandegedara, Sri Lanka
- Average cloud cover in September: 36
The months with the most cloud cover are November and December (Cloud cover 47).
The month with the least cloud cover is March (Cloud cover 27).
Average visibility in September
Kandegedara, Sri Lanka
- Average visibility in September: 9km
The months with the highest visibility are June, July and August (10km).
The months with the lowest visibility are January, February, March, April, November and December (8km).
