September weather forecastSiemienice, Poland
September
Weather in September
September, the first month of the autumn in Siemienice, is still a comfortable month, with temperature in the range of an average high of 19.2°C (66.6°F) and an average low of 10.7°C (51.3°F).Temperature
Siemienice's September weather features a mild decline in high-temperatures, reducing from a moderately hot 24.7°C (76.5°F) in August to an enjoyable 19.2°C (66.6°F). September nights cool down to an average low-temperature of 10.7°C (51.3°F).Humidity
In Siemienice, the average relative humidity in September is 72%.Rainfall
In Siemienice, in September, during 11.3 rainfall days, 25mm (0.98") of precipitation is typically accumulated. Throughout the year, there are 147.5 rainfall days, and 381mm (15") of precipitation is accumulated.Snowfall
In Siemienice, Poland, 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 05:54 and sunset at 19:29. On the last day of September, in Siemienice, sunrise is at 06:42 and sunset at 18:21 CEST.
Sunshine
The average sunshine in September in Siemienice is 8.2h.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 exposure to the Sun's UV radiation for the average person.Note: The maximum UV index of 4 during September leads to these instructions:
Adopt protective measures - Suggestions to resist sunburn are offered. When the Sun is at its strongest around midday, find shade and limit exposure. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Siemienice, 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 (0.2°C).
- Average low temperature in September: 10.7°C
The month with the highest average low temperature is August (15°C).
The coldest month (with the lowest average low temperature) is January (-3.5°C).
Average pressure in September
Siemienice, Poland
- Average pressure in September: 1017.2mbar
The month with the highest atmospheric pressure is October (1017.9mbar).
The month with the lowest atmospheric pressure is July (1013.7mbar).
Average wind speed in September
Siemienice, Poland
- Average wind speed in September: 12.4km/h
The windiest month (with the highest average wind speed) is December (15.7km/h).
The calmest month (with the lowest average wind speed) is August (11.2km/h).
Average humidity in September
Siemienice, 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
Siemienice, Poland
- Average rainfall in September: 25mm
The wettest months (with the highest rainfall) are May and June (50mm).
The driest month (with the least rainfall) is April (19mm).
Average rainfall days in September
Siemienice, Poland
- Average rainfall days in September: 11.3 days
The month with the highest number of rainy days is July (18 days).
The month with the least rainy days is January (7.7 days).
Average snowfall in September
Siemienice, Poland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (83mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Siemienice, Poland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Siemienice, 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 30min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).
Average sunshine days in September
Siemienice, Poland
- Average sunshine days in September: 16.7 days
The month with the most sunshine days is October (17.6 days).
The month with the least sunshine days is July (10.2 days).
Average UV index in September
Siemienice, 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
Siemienice, Poland
- Average cloud cover in September: 39
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
Siemienice, 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).
