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
Weather in September
Temperature
Kuppilan's average high-temperature marks a still warm 28.8°C (83.8°F) with the advent of September, closely mirroring that of the preceding month. Kuppilan's nocturnal readings in September exhibit minimal variation from the daytime temperatures, averaging at a still moderately hot 27.6°C (81.7°F).Heat index
The average heat index in September is computed to be a hot 34°C (93.2°F). Greater safety measures are needed, risk of heat exhaustion and heat cramps is high. Continuous activity might trigger heatstroke.From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
Humidity
May and September, with an average relative humidity of 79%, are the most humid months in Kuppilan, Sri Lanka.Rainfall
In Kuppilan, during September, the rain falls for 21.7 days and regularly aggregates up to 90mm (3.54") of precipitation. Throughout the year, there are 189.6 rainfall days, and 1106mm (43.54") of precipitation is accumulated.Daylight
In Kuppilan, the average length of the day in September is 12h and 11min.On the first day of the month, sunrise is at 06:00 and sunset at 18:18. On the last day of September, in Kuppilan, Sri Lanka, sunrise is at 05:58 and sunset at 18:01 +0530.
Sunshine
In September, the average sunshine in Kuppilan, Sri Lanka, is 10.4h.UV index
The months with the highest UV index in Kuppilan are January through September and December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the average person.Note: In September, a daily maximum UV index of 7 leads to the following instructions:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Frequently asked questions
How hot does it get in Kuppilan in September?
What are the most humid months in Kuppilan?
What is the average humidity in September in Kuppilan?
How much does it rain in Kuppilan in September?
How many hours of daylight does Kuppilan have in September?
When are sunrise and sunset in September in Kuppilan?
How many hours of sunshine does Kuppilan have in September?
What is the month with the highest UV index in Kuppilan?
How high is the UV index in September in Kuppilan?
Average temperature in September
Kuppilan, Sri Lanka
- Average high temperature in September: 28.8°C
The warmest month (with the highest average high temperature) is May (30.7°C).
The month with the lowest average high temperature is January (26.8°C).
- Average low temperature in September: 27.6°C
The month with the highest average low temperature is May (29°C).
The coldest month (with the lowest average low temperature) is January (25.5°C).
Average pressure in September
Kuppilan, Sri Lanka
- Average pressure in September: 1007.6mbar
The month with the highest atmospheric pressure is January (1012.5mbar).
The month with the lowest atmospheric pressure is June (1005.8mbar).
Average wind speed in September
Kuppilan, Sri Lanka
- Average wind speed in September: 27.2km/h
The windiest month (with the highest average wind speed) is June (32.9km/h).
The calmest month (with the lowest average wind speed) is April (16.3km/h).
Average humidity in September
Kuppilan, Sri Lanka
- Average humidity in September: 79%
The months with the highest relative humidity are May and September (79%).
The month with the lowest relative humidity is March (75%).
Average rainfall in September
Kuppilan, Sri Lanka
- Average rainfall in September: 90mm
The wettest months (with the highest rainfall) are October and November (257mm).
The driest month (with the least rainfall) is March (18mm).
Average rainfall days in September
Kuppilan, Sri Lanka
- Average rainfall days in September: 21.7 days
The month with the highest number of rainy days is October (25.1 days).
The months with the least rainy days are February and March (7.6 days).
Average daylight in September /
Average sunshine in September
Kuppilan, Sri Lanka
- Average daylight in September: 12h and 1min
The month with the longest days is June (Average daylight: 12h and 42min).
The month with the shortest days is December (Average daylight: 11h and 36min).
- Average sunshine in September: 10h and 2min
The months with the most sunshine are May and June (Average sunshine: 11h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in September
Kuppilan, Sri Lanka
- Average sunshine days in September: 6.6 days
The month with the most sunshine days is March (21.2 days).
The month with the least sunshine days is November (3.8 days).
Average UV index in September
Kuppilan, Sri Lanka
- Average UV index in September: 7
The months with the highest UV index are January, February, March, April, May, June, July, August, September and December (UV index 7).
The months with the lowest UV index are October and November (UV index 6).
Average cloud cover in September
Kuppilan, Sri Lanka
- Average cloud cover in September: 30
The month with the most cloud cover is December (Cloud cover 47).
The month with the least cloud cover is March (Cloud cover 16).
Average visibility in September
Kuppilan, Sri Lanka
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September and December (10km).
The months with the lowest visibility are October and November (9km).
Kuppilan, Sri Lanka
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