September weather forecastSiercz, Poland
September
Weather in September
The first month of the autumn, September, is still a comfortable month in Siercz, Poland, with an average temperature varying between 19.3°C (66.7°F) and 11.3°C (52.3°F).Temperature
As August transitions into September, Siercz sees a drop in the average high-temperature, transitioning from a warm 24.5°C (76.1°F) to a comfortable 19.3°C (66.7°F). Siercz cools down to an average low-temperature of 11.3°C (52.3°F) throughout the month of September.Humidity
In September, the average relative humidity is 73%.Rainfall
In Siercz, during September, the rain falls for 10.4 days and regularly aggregates up to 22mm (0.87") of precipitation. Throughout the year, there are 140.9 rainfall days, and 327mm (12.87") of precipitation is accumulated.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in September is 12h and 40min.On the first day of September in Siercz, sunrise is at 06:09 and sunset at 19:44. On the last day of the month, sunrise is at 06:57 and sunset at 18:36 CEST.
Sunshine
In September, the average sunshine is 8.8h.UV index
In Siercz, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum UV index of 4 during September translates into these guidelines:
Act with care - The need to guard against sun damage is communicated. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Siercz, Poland
- Average high temperature in September: 19.3°C
The warmest month (with the highest average high temperature) is August (24.5°C).
The month with the lowest average high temperature is January (1.5°C).
- Average low temperature in September: 11.3°C
The month with the highest average low temperature is August (14.9°C).
The coldest month (with the lowest average low temperature) is January (-2.2°C).
Average pressure in September
Siercz, Poland
- Average pressure in September: 1017mbar
The month with the highest atmospheric pressure is October (1017.2mbar).
The months with the lowest atmospheric pressure are July and November (1014.1mbar).
Average wind speed in September
Siercz, Poland
- Average wind speed in September: 11.6km/h
The windiest month (with the highest average wind speed) is December (14.5km/h).
The calmest month (with the lowest average wind speed) is August (10.9km/h).
Average humidity in September
Siercz, Poland
- Average humidity in September: 73%
The months with the highest relative humidity are January and December (89%).
The month with the lowest relative humidity is August (68%).
Average rainfall in September
Siercz, Poland
- Average rainfall in September: 22mm
The wettest month (with the highest rainfall) is July (50mm).
The driest month (with the least rainfall) is April (15mm).
Average rainfall days in September
Siercz, Poland
- Average rainfall days in September: 10.4 days
The month with the highest number of rainy days is July (15.6 days).
The month with the least rainy days is January (8.2 days).
Average snowfall in September
Siercz, Poland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (34mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Siercz, Poland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.9 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
Siercz, 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 48min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).
Average sunshine days in September
Siercz, Poland
- Average sunshine days in September: 17.8 days
The month with the most sunshine days is October (18.5 days).
The month with the least sunshine days is July (13.3 days).
Average UV index in September
Siercz, 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 November (UV index 1).
Average cloud cover in September
Siercz, 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 34).
Average visibility in September
Siercz, Poland
- Average visibility in September: 9km
The month with the highest visibility is June (10km).
The month with the lowest visibility is January (7km).
