September weather forecastPiersna, Poland
September
Weather in September
The first month of the autumn, September, is still a refreshing month in Piersna, Poland, with temperature in the range of an average high of 19.7°C (67.5°F) and an average low of 11.5°C (52.7°F).Temperature
September brings a minor decrease, with the average high-temperature reducing from a moderately hot 25.3°C (77.5°F) in August to an enjoyable 19.7°C (67.5°F). An average low-temperature of 11.5°C (52.7°F) is expected in Piersna during September.Humidity
The average relative humidity in September in Piersna is 71%.Rainfall
In Piersna, Poland, in September, it is raining for 10.4 days, with typically 22mm (0.87") of accumulated precipitation. Throughout the year, in Piersna, there are 136.5 rainfall days, and 329mm (12.95") of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 38min.On the first day of the month, sunrise is at 06:08 and sunset at 19:41. On the last day of September, in Piersna, sunrise is at 06:54 and sunset at 18:34 CEST.
Sunshine
The average sunshine in September is 8.7h.UV index
In Piersna, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: The UV index of 4 during September translates into the following guidance:
Act with care - The need to guard against sun damage is communicated. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Piersna, Poland
- Average high temperature in September: 19.7°C
The warmest month (with the highest average high temperature) is August (25.3°C).
The month with the lowest average high temperature is January (1.6°C).
- Average low temperature in September: 11.5°C
The month with the highest average low temperature is August (15.6°C).
The coldest month (with the lowest average low temperature) is January (-2.3°C).
Average pressure in September
Piersna, Poland
- Average pressure in September: 1017.5mbar
The month with the highest atmospheric pressure is October (1017.9mbar).
The month with the lowest atmospheric pressure is July (1014.4mbar).
Average wind speed in September
Piersna, Poland
- Average wind speed in September: 11.1km/h
The windiest month (with the highest average wind speed) is December (13.3km/h).
The calmest month (with the lowest average wind speed) is August (10.4km/h).
Average humidity in September
Piersna, Poland
- Average humidity in September: 71%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is August (65%).
Average rainfall in September
Piersna, Poland
- Average rainfall in September: 22mm
The wettest month (with the highest rainfall) is July (50mm).
The driest month (with the least rainfall) is April (15mm).
Average rainfall days in September
Piersna, Poland
- Average rainfall days in September: 10.4 days
The months with the highest number of rainy days are June and July (15.8 days).
The month with the least rainy days is February (7.2 days).
Average snowfall in September
Piersna, Poland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (55mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Piersna, Poland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Piersna, 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 42min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).
Average sunshine days in September
Piersna, Poland
- Average sunshine days in September: 18.2 days
The month with the most sunshine days is October (19 days).
The month with the least sunshine days is June (12.9 days).
Average UV index in September
Piersna, Poland
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Piersna, Poland
- Average cloud cover in September: 39
The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Piersna, Poland
- Average visibility in September: 10km
The months with the highest visibility are June, July, August and September (10km).
The month with the lowest visibility is January (7km).
