September weather forecastSiecie, Poland
September
Weather in September
September, the first month of the autumn in Siecie, is still a refreshing month, with an average temperature varying between 17.9°C (64.2°F) and 11.8°C (53.2°F).Temperature
September's arrival aligns with a minor decrease in average high-temperatures, from August's pleasant 22.8°C (73°F) to a comfortable 17.9°C (64.2°F). During September nights, Siecie witnesses a consistent average temperature of 11.8°C (53.2°F).Humidity
In September, the average relative humidity is 75%.Rainfall
In Siecie, in September, it is raining for 11.1 days, with typically 32mm (1.26") of accumulated precipitation. Throughout the year, there are 129.2 rainfall days, and 353mm (13.9") of precipitation is accumulated.Snowfall
In Siecie, snow does not fall in June through October.Daylight
In Siecie, the average length of the day in September is 12h and 43min.On the first day of the month, sunrise is at 05:59 and sunset at 19:42. On the last day of September, sunrise is at 06:52 and sunset at 18:29 CEST.
Sunshine
In Siecie, the average sunshine in September is 8.1h.UV index
In Siecie, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: In September, a regular UV index of 4 translates into these guidelines:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Siecie, 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
Siecie, 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
Siecie, 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
Siecie, 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
Siecie, 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
Siecie, 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
Siecie, 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
Siecie, 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
Siecie, Poland
- Average daylight in September: 12h and 42min
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 6min
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
Siecie, 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
Siecie, 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
Siecie, 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
Siecie, 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).
