Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
September
Weather in September
Temperature
The onset of September aligns with a soft reduction in the average high-temperature, gently falling from a pleasant 22.8°C (73°F) in August to an enjoyable 17.9°C (64.2°F). Throughout September, the average low-temperature dips to a cool 11.8°C (53.2°F).Humidity
The average relative humidity in September is 75%.Rainfall
In September, in Siemianice, the rain falls for 11.1 days. Throughout September, 32mm (1.26") of precipitation is accumulated. In Siemianice, during the entire year, the rain falls for 129.2 days and collects up to 353mm (13.9") of precipitation.Snowfall
In Siemianice, snow does not fall in June through October.Daylight
In Siemianice, the average length of the day in September is 12h and 43min.On the first day of September, sunrise is at 06:00 and sunset at 19:43. On the last day of the month, sunrise is at 06:53 and sunset at 18:30 CEST.
Sunshine
In Siemianice, the average sunshine in September is 8.1h.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 exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum UV index, 4 during September, leads to the following recommendations:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Siemianice?
What is the average humidity in September in Siemianice?
How much does it rain in Siemianice in September?
When it does not snow in Siemianice?
What is the average length of the day in September in Siemianice?
When are sunrise and sunset in September in Siemianice?
How long on average sun shines in September in Siemianice?
How high is the UV index in September in Siemianice?
Average temperature in September
Siemianice, Poland
- Average high temperature in September: 17.9°C
The warmest month (with the highest average high temperature) is August (22.8°C).
The month with the lowest average high temperature is January (1.2°C).
- Average low temperature in September: 11.8°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 (-1.7°C).
Average pressure in September
Siemianice, Poland
- Average pressure in September: 1016.2mbar
The month with the highest atmospheric pressure is October (1016.3mbar).
The month with the lowest atmospheric pressure is December (1012.9mbar).
Average wind speed in September
Siemianice, Poland
- Average wind speed in September: 15.5km/h
The windiest month (with the highest average wind speed) is December (19.4km/h).
The calmest month (with the lowest average wind speed) is August (13.9km/h).
Average humidity in September
Siemianice, Poland
- Average humidity in September: 75%
The months with the highest relative humidity are January, February and December (86%).
The month with the lowest relative humidity is April (70%).
Average rainfall in September
Siemianice, Poland
- Average rainfall in September: 32mm
The wettest month (with the highest rainfall) is July (38mm).
The driest month (with the least rainfall) is April (12mm).
Average rainfall days in September
Siemianice, Poland
- Average rainfall days in September: 11.1 days
The month with the highest number of rainy days is July (13.6 days).
The month with the least rainy days is April (8 days).
Average snowfall in September
Siemianice, Poland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (72mm).
The months with the least snowfall are June, July, August, September and October (0mm).
Average snowfall days in September
Siemianice, Poland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.2 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Siemianice, Poland
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 17h and 12min).
The month with the shortest days is December (Average daylight: 7h and 24min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is August (Average sunshine: 9h and 54min).
The months with the least sunshine are January and December (Average sunshine: 2h and 48min).
Average sunshine days in September
Siemianice, Poland
- Average sunshine days in September: 17.1 days
The months with the most sunshine days are April and May (19.8 days).
The month with the least sunshine days is December (12 days).
Average UV index in September
Siemianice, Poland
- Average UV index in September: 4
The months with the highest UV index are 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
Siemianice, Poland
- Average cloud cover in September: 43
The month with the most cloud cover is December (Cloud cover 72).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in September
Siemianice, Poland
- Average visibility in September: 10km
The months with the highest visibility are April, June, August, September and October (10km).
The months with the lowest visibility are January, February, March, May, July, November and December (9km).
