September weather forecastPostronna, Poland
September
Weather in September
The first month of the autumn, September, is also an agreeable month in Postronna, Poland, with an average temperature varying between 10.9°C (51.6°F) and 20.1°C (68.2°F).Temperature
The decrease of average high-temperatures is mild in September, with a decline from a moderately hot 25.9°C (78.6°F) in August to an agreeable 20.1°C (68.2°F). Nighttime temperature experiences an average drop to a fresh 10.9°C (51.6°F) in September.Humidity
In September, the average relative humidity is 71%.Rainfall
In Postronna, Poland, during September, the rain falls for 11.5 days and regularly aggregates up to 28mm (1.1") of precipitation. In Postronna, during the entire year, the rain falls for 143.2 days and collects up to 427mm (16.81") of precipitation.Snowfall
In Postronna, snow does not fall in May through September.Daylight
In Postronna, Poland, the average length of the day in September is 12h and 37min.On the first day of the month, sunrise is at 05:48 and sunset at 19:18. On the last day of September, in Postronna, Poland, sunrise is at 06:33 and sunset at 18:14 CEST.
Sunshine
In Postronna, the average sunshine in September is 8.1h.UV index
The average daily maximum UV index in September in Postronna is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: In September, a daily UV index of 4 turns into the following recommendations:
Take necessary precautions - Suggestions to elude sunburn are provided. Around midday, solar radiation is most harmful; hence, exposure should be limited. 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
Average temperature in September
Postronna, Poland
- Average high temperature in September: 20.1°C
The warmest month (with the highest average high temperature) is August (25.9°C).
The month with the lowest average high temperature is January (0.3°C).
- Average low temperature in September: 10.9°C
The months with the highest average low temperature are July and August (14.9°C).
The coldest month (with the lowest average low temperature) is January (-3.6°C).
Average pressure in September
Postronna, Poland
- Average pressure in September: 1017.7mbar
The month with the highest atmospheric pressure is October (1019mbar).
The month with the lowest atmospheric pressure is July (1014.2mbar).
Average wind speed in September
Postronna, Poland
- Average wind speed in September: 10.1km/h
The windiest month (with the highest average wind speed) is December (12.2km/h).
The calmest month (with the lowest average wind speed) is August (9km/h).
Average humidity in September
Postronna, 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 (66%).
Average rainfall in September
Postronna, Poland
- Average rainfall in September: 28mm
The wettest month (with the highest rainfall) is July (62mm).
The driest month (with the least rainfall) is November (20mm).
Average rainfall days in September
Postronna, Poland
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is July (17.9 days).
The month with the least rainy days is January (7.7 days).
Average snowfall in September
Postronna, Poland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (103mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in September
Postronna, Poland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (14.3 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
Postronna, Poland
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 24min).
The month with the shortest days is December (Average daylight: 8h and 6min).
- Average sunshine in September: 8h and 6min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).
Average sunshine days in September
Postronna, Poland
- Average sunshine days in September: 16.4 days
The month with the most sunshine days is October (18.6 days).
The month with the least sunshine days is June (10.6 days).
Average UV index in September
Postronna, 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 November and December (UV index 1).
Average cloud cover in September
Postronna, Poland
- Average cloud cover in September: 39
The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in September
Postronna, Poland
- Average visibility in September: 9km
The months with the highest visibility are March, April, May, June, July, August, September and October (9km).
The months with the lowest visibility are January and February (7km).
