September weather forecastPromno, Poland
September
Weather in September
The first month of the autumn, September, is still a refreshing month in Promno, Poland, with an average temperature ranging between max 19.2°C (66.6°F) and min 10.9°C (51.6°F).Temperature
The shift from August to September involves a decrease in the average high-temperature, from a warm 24.4°C (75.9°F) to an enjoyable 19.2°C (66.6°F). During September, Promno records an average temperature of 10.9°C (51.6°F) at night.Humidity
The average relative humidity in September in Promno is 72%.Rainfall
September is the month with the least rainfall. Rain falls for 7.2 days and accumulates 18mm (0.71") of precipitation.Snowfall
June through September are months without snowfall in Promno.Daylight
In September, the average length of the day is 12h and 40min.On the first day of September, sunrise is at 06:02 and sunset at 19:38. On the last day of the month, sunrise is at 06:51 and sunset at 18:30 CEST.
Sunshine
In September, the average sunshine in Promno is 8.2h.UV index
In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: In September, the UV index of 4 transforms into the following advice:
Ensure safety - Sun damage prevention is strongly urged. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Promno, Poland
- Average high temperature in September: 19.2°C
The warmest month (with the highest average high temperature) is August (24.4°C).
The month with the lowest average high temperature is January (0.5°C).
- Average low temperature in September: 10.9°C
The month with the highest average low temperature is August (14.8°C).
The coldest month (with the lowest average low temperature) is January (-3.1°C).
Average pressure in September
Promno, Poland
- Average pressure in September: 1017.1mbar
The month with the highest atmospheric pressure is October (1017.6mbar).
The month with the lowest atmospheric pressure is July (1013.8mbar).
Average wind speed in September
Promno, Poland
- Average wind speed in September: 13.1km/h
The windiest month (with the highest average wind speed) is December (16.6km/h).
The calmest month (with the lowest average wind speed) is August (12km/h).
Average humidity in September
Promno, Poland
- Average humidity in September: 72%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (66%).
Average rainfall in September
Promno, Poland
- Average rainfall in September: 18mm
The wettest month (with the highest rainfall) is May (45mm).
The driest month (with the least rainfall) is September (18mm).
Average rainfall days in September
Promno, Poland
- Average rainfall days in September: 7.2 days
The month with the highest number of rainy days is May (15 days).
The month with the least rainy days is September (7.2 days).
Average snowfall in September
Promno, Poland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (99mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Promno, Poland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (14.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Promno, 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 12min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).
Average sunshine days in September
Promno, Poland
- Average sunshine days in September: 21.7 days
The month with the most sunshine days is September (21.7 days).
The month with the least sunshine days is January (9.8 days).
Average UV index in September
Promno, Poland
- Average UV index in September: 4
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are November and December (UV index 1).
Average cloud cover in September
Promno, Poland
- Average cloud cover in September: 40
The month with the most cloud cover is January (Cloud cover 73).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in September
Promno, 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).
