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
With the advent of September, Polgolla experiences an average high-temperature of a still warm 29.5°C (85.1°F), mirroring a close resemblance to the previous month. Polgolla reports an average low-temperature of 21.1°C (70°F) during the nights of September.Heat index
The heat index value during September is calculated to be a torrid 35°C (95°F). Ensure extra safety steps, heat exhaustion and heat cramps are likely. Long activity might lead to heatstroke.Know that the heat index computations account for shaded terrains and slight winds. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', gauges the sensation of temperature factoring in the air's moisture content. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
Evaporation of sweat is the main factor behind the cooling effect of perspiration in the human body. When relative humidity increases, the body's capacity to evaporate heat decreases, leading to a heightened sense of warmth. Heat-related challenges, like dehydration, can be anticipated when body heat isn't managed effectively.
Humidity
The average relative humidity in September is 77%.Rainfall
In Polgolla, during September, the rain falls for 23.4 days and regularly aggregates up to 118mm (4.65") of precipitation. Throughout the year, in Polgolla, Sri Lanka, there are 278.4 rainfall days, and 1466mm (57.72") 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 05:59 and sunset at 18:14. On the last day of September, in Polgolla, sunrise is at 05:55 and sunset at 17:59 +0530.
Sunshine
In September, the average sunshine in Polgolla, Sri Lanka, is 10.3h.UV index
The months with the highest UV index are January through September, November and December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the average person.Note: The maximum UV index of 6 during September leads to these instructions:
Shun overexposure. Protection from sun ravages is indispensable. 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. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in Polgolla in September?
What is the average humidity in September in Polgolla?
How much does it rain in Polgolla in September?
How many hours of daylight does Polgolla have in September?
What time are sunrise and sunset in September in Polgolla?
How many hours of sunshine does Polgolla have in September?
When is the highest UV index in Polgolla?
What is the UV index intensity in September in Polgolla?
Average temperature in September
Polgolla, Sri Lanka
- Average high temperature in September: 29.5°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: 21.1°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
Polgolla, Sri Lanka
- Average pressure in September: 1009.3mbar
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
Polgolla, Sri Lanka
- Average wind speed in September: 10.8km/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
Polgolla, 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
Polgolla, Sri Lanka
- Average rainfall in September: 118mm
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
Polgolla, Sri Lanka
- Average rainfall days in September: 23.4 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
Polgolla, 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: 10h and 2min
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
Polgolla, Sri Lanka
- Average sunshine days in September: 3.9 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
Polgolla, 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
Polgolla, Sri Lanka
- Average cloud cover in September: 34
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
Polgolla, 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).
Polgolla, Sri Lanka
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