September weather forecastKoperno, Poland
September
Weather in September
The first month of the autumn, September, is still a comfortable month in Koperno, Poland, with an average temperature fluctuating between 19.7°C (67.5°F) and 11.5°C (52.7°F).Temperature
In Koperno, entering September brings a temperature decrement, reducing from August's moderately hot 25°C (77°F) to a comfortable 19.7°C (67.5°F). Throughout September, Koperno encounters an average temperature drop to a fresh 11.5°C (52.7°F).Humidity
The average relative humidity in September is 73%.Rainfall
In Koperno, during September, the rain falls for 12.1 days and regularly aggregates up to 22mm (0.87") of precipitation. Throughout the year, in Koperno, there are 155.1 rainfall days, and 336mm (13.23") of precipitation is accumulated.Snowfall
In Koperno, Poland, snow does not fall in May through September.Daylight
The average length of the day in September is 12h and 39min.On the first day of September in Koperno, sunrise is at 06:13 and sunset at 19:47. On the last day of the month, sunrise is at 07:01 and sunset at 18:40 CEST.
Sunshine
In September, the average sunshine is 8.8h.UV index
In September, the average daily maximum UV index in Koperno, Poland, is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In September, the maximum UV index of 4 transforms into these recommendations:
Be vigilant - Preventing sunburn is recommended. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Koperno, Poland
- Average high temperature in September: 19.7°C
The warmest month (with the highest average high temperature) is August (25°C).
The month with the lowest average high temperature is January (2°C).
- Average low temperature in September: 11.5°C
The month with the highest average low temperature is August (15.2°C).
The coldest month (with the lowest average low temperature) is January (-2.1°C).
Average pressure in September
Koperno, Poland
- Average pressure in September: 1017.3mbar
The month with the highest atmospheric pressure is October (1017.4mbar).
The month with the lowest atmospheric pressure is November (1014.3mbar).
Average wind speed in September
Koperno, Poland
- Average wind speed in September: 11km/h
The windiest month (with the highest average wind speed) is December (14.8km/h).
The calmest month (with the lowest average wind speed) is August (10.3km/h).
Average humidity in September
Koperno, Poland
- Average humidity in September: 73%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (67%).
Average rainfall in September
Koperno, Poland
- Average rainfall in September: 22mm
The wettest month (with the highest rainfall) is July (53mm).
The driest month (with the least rainfall) is April (13mm).
Average rainfall days in September
Koperno, Poland
- Average rainfall days in September: 12.1 days
The month with the highest number of rainy days is July (16.5 days).
The month with the least rainy days is February (9.5 days).
Average snowfall in September
Koperno, Poland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (50mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in September
Koperno, Poland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Koperno, Poland
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 36min).
The month with the shortest days is December (Average daylight: 7h and 54min).
- Average sunshine in September: 8h and 48min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in September
Koperno, Poland
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is October (17.2 days).
The month with the least sunshine days is January (10.9 days).
Average UV index in September
Koperno, Poland
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The month with the lowest UV index is November (UV index 1).
Average cloud cover in September
Koperno, Poland
- Average cloud cover in September: 38
The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Koperno, Poland
- Average visibility in September: 9km
The months with the highest visibility are June and August (10km).
The months with the lowest visibility are January, February, November and December (8km).
