September weather forecastSiemienie, Poland
September
Weather in September
The first month of the autumn, September, is also an enjoyable month in Siemienie, Poland, with an average temperature ranging between min 10.5°C (50.9°F) and max 19.1°C (66.4°F).Temperature
A shift in the average high-temperature occurs in September, reducing from a moderately hot 24.7°C (76.5°F) in August to an enjoyable 19.1°C (66.4°F). During September in Siemienie, the average low-temperature is recorded at a cool 10.5°C (50.9°F).Humidity
The average relative humidity in September in Siemienie, Poland, is 72%.Rainfall
In Siemienie, in September, it is raining for 9.2 days, with typically 21mm (0.83") of accumulated precipitation. In Siemienie, during the entire year, the rain falls for 138.8 days and collects up to 352mm (13.86") of precipitation.Snowfall
In Siemienie, snow does not fall in June through September.Daylight
In Siemienie, Poland, the average length of the day in September is 12h and 40min.On the first day of September in Siemienie, sunrise is at 05:52 and sunset at 19:28. On the last day of the month, sunrise is at 06:41 and sunset at 18:19 CEST.
Sunshine
In Siemienie, the average sunshine in September is 8h.UV index
The average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: In September, a regular UV index of 4 translates into these guidelines:
Exercise prevention - Precautions against solar damage are endorsed. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Siemienie, Poland
- Average high temperature in September: 19.1°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 (-0.3°C).
- Average low temperature in September: 10.5°C
The month with the highest average low temperature is August (14.7°C).
The coldest month (with the lowest average low temperature) is January (-3.6°C).
Average pressure in September
Siemienie, Poland
- Average pressure in September: 1017.1mbar
The month with the highest atmospheric pressure is October (1017.8mbar).
The month with the lowest atmospheric pressure is July (1013.5mbar).
Average wind speed in September
Siemienie, Poland
- Average wind speed in September: 12.1km/h
The windiest month (with the highest average wind speed) is December (15.1km/h).
The calmest month (with the lowest average wind speed) is August (10.8km/h).
Average humidity in September
Siemienie, 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 (67%).
Average rainfall in September
Siemienie, Poland
- Average rainfall in September: 21mm
The wettest month (with the highest rainfall) is May (51mm).
The driest month (with the least rainfall) is April (17mm).
Average rainfall days in September
Siemienie, Poland
- Average rainfall days in September: 9.2 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in September
Siemienie, Poland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (81mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Siemienie, Poland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (11.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Siemienie, Poland
- Average daylight in September: 12h and 42min
The month with the longest days is June (Average daylight: 16h and 48min).
The month with the shortest days is December (Average daylight: 7h and 42min).
- Average sunshine in September: 8h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).
Average sunshine days in September
Siemienie, Poland
- Average sunshine days in September: 18 days
The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is July (11.1 days).
Average UV index in September
Siemienie, 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 January and December (UV index 1).
Average cloud cover in September
Siemienie, Poland
- Average cloud cover in September: 41
The month with the most cloud cover is January (Cloud cover 72).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in September
Siemienie, Poland
- Average visibility in September: 9km
The months with the highest visibility are March, April, May, June, July, August, September and October (9km).
The month with the lowest visibility is January (7km).
