September weather forecastBylew, Poland
September
Weather in September
September, the first month of the autumn in Bylew, is still a refreshing month, with temperature in the range of an average high of 19.2°C (66.6°F) and an average low of 11.1°C (52°F).Temperature
The arrival of September corresponds with a temperature reduction, down from August's moderately hot 24.7°C (76.5°F) to a refreshing 19.2°C (66.6°F). Bylew observes an average nighttime low-temperature of 11.1°C (52°F) during the month of September.Humidity
In September, the average relative humidity is 71%.Rainfall
In September, the rain falls for 10.5 days. Throughout September, 22mm (0.87") of precipitation is accumulated. In Bylew, during the entire year, the rain falls for 140.2 days and collects up to 307mm (12.09") of precipitation.Snowfall
In Bylew, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 40min.On the first day of the month, sunrise is at 05:58 and sunset at 19:33. On the last day of September, sunrise is at 06:46 and sunset at 18:25 CEST.
Sunshine
In September, the average sunshine in Bylew is 8.5h.UV index
In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for average individuals.Note: An average maximum UV index of 4 in September leads to these recommendations:
Guard yourself - Precautionary measures against sun damage are advocated. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Bylew, Poland
- Average high temperature in September: 19.2°C
The warmest month (with the highest average high temperature) is August (24.7°C).
The month with the lowest average high temperature is January (0.5°C).
- Average low temperature in September: 11.1°C
The month with the highest average low temperature is August (15.3°C).
The coldest month (with the lowest average low temperature) is January (-2.8°C).
Average pressure in September
Bylew, Poland
- Average pressure in September: 1017.2mbar
The month with the highest atmospheric pressure is October (1017.8mbar).
The month with the lowest atmospheric pressure is July (1013.9mbar).
Average wind speed in September
Bylew, Poland
- Average wind speed in September: 12.4km/h
The windiest month (with the highest average wind speed) is December (15.2km/h).
The calmest month (with the lowest average wind speed) is August (11.3km/h).
Average humidity in September
Bylew, 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
Bylew, Poland
- Average rainfall in September: 22mm
The wettest month (with the highest rainfall) is June (42mm).
The driest month (with the least rainfall) is April (14mm).
Average rainfall days in September
Bylew, Poland
- Average rainfall days in September: 10.5 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is February (7.6 days).
Average snowfall in September
Bylew, Poland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (71mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Bylew, Poland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Bylew, Poland
- Average daylight in September: 12h and 42min
The month with the longest days is June (Average daylight: 16h and 42min).
The month with the shortest days is December (Average daylight: 7h and 48min).
- Average sunshine in September: 8h and 30min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).
Average sunshine days in September
Bylew, Poland
- Average sunshine days in September: 17.4 days
The month with the most sunshine days is October (18.2 days).
The month with the least sunshine days is July (10.9 days).
Average UV index in September
Bylew, 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 and December (UV index 1).
Average cloud cover in September
Bylew, Poland
- Average cloud cover in September: 38
The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in September
Bylew, 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).
