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
The initiation of September sees an average high-temperature of a still moderately hot 27.1°C (80.8°F), maintaining the same temperature as the previous month. September's average low-temperature reading settles at a comfortable 18.7°C (65.7°F).Heat index
During September, the heat index is estimated at a tropical 30°C (86°F). Exhaustion might be the outcome of enduring exposure and continuous activity, with a risk of heat cramps.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 'real feel' or 'felt air temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. 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 quite important for babies and toddlers. 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.
Humidity
The average relative humidity in September is 82%.Rainfall
In Kalagolla, Sri Lanka, in September, during 25.5 rainfall days, 182mm (7.17") of precipitation is typically accumulated. Throughout the year, there are 297.4 rainfall days, and 2784mm (109.61") of precipitation is accumulated.Daylight
The average length of the day in September is 12h and 10min.On the first day of the month, sunrise is at 05:58 and sunset at 18:13. On the last day of September, sunrise is at 05:54 and sunset at 17:57 +0530.
Sunshine
In September, the average sunshine is 9.5h.UV index
February through September, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The daily high UV index of 6 in September translates into this advice:
Stay clear of intense sun exposure. Solar protection is of utmost significance. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What is the average humidity in September?
How many days does it rain in September in Kalagolla?
How many hours of daylight does Kalagolla have in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Kalagolla have in September?
When is the highest UV index?
What is the UV index reading in September?
Average temperature in September
Kalagolla, Sri Lanka
- Average high temperature in September: 27.1°C
The warmest month (with the highest average high temperature) is April (27.6°C).
The month with the lowest average high temperature is December (24.3°C).
- Average low temperature in September: 18.7°C
The month with the highest average low temperature is May (19.1°C).
The coldest month (with the lowest average low temperature) is February (15.3°C).
Average pressure in September
Kalagolla, Sri Lanka
- Average pressure in September: 1009.5mbar
The month with the highest atmospheric pressure is January (1011.7mbar).
The month with the lowest atmospheric pressure is June (1008.3mbar).
Average wind speed in September
Kalagolla, Sri Lanka
- Average wind speed in September: 7.1km/h
The windiest month (with the highest average wind speed) is June (9.1km/h).
The calmest month (with the lowest average wind speed) is April (3.3km/h).
Average humidity in September
Kalagolla, Sri Lanka
- Average humidity in September: 82%
The month with the highest relative humidity is November (89%).
The month with the lowest relative humidity is March (80%).
Average rainfall in September
Kalagolla, Sri Lanka
- Average rainfall in September: 182mm
The wettest month (with the highest rainfall) is October (656mm).
The driest month (with the least rainfall) is January (85mm).
Average rainfall days in September
Kalagolla, Sri Lanka
- Average rainfall days in September: 25.5 days
The month with the highest number of rainy days is May (29.8 days).
The month with the least rainy days is February (16.3 days).
Average daylight in September /
Average sunshine in September
Kalagolla, 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 3min
The month with the most sunshine is June (Average sunshine: 10h and 0min).
The month with the least sunshine is December (Average sunshine: 4h and 36min).
Average sunshine days in September
Kalagolla, Sri Lanka
- Average sunshine days in September: 2.2 days
The month with the most sunshine days is February (11 days).
The month with the least sunshine days is May (0.8 days).
Average UV index in September
Kalagolla, Sri Lanka
- Average UV index in September: 6
The months with the highest UV index are February, March, April, May, June, July, August and September (UV index 6).
The months with the lowest UV index are January, October, November and December (UV index 5).
Average cloud cover in September
Kalagolla, Sri Lanka
- Average cloud cover in September: 44
The month with the most cloud cover is November (Cloud cover 63).
The months with the least cloud cover are July and August (Cloud cover 42).
Average visibility in September
Kalagolla, Sri Lanka
- Average visibility in September: 8km
The months with the highest visibility are June, July and August (9km).
The months with the lowest visibility are November and December (6km).
