September weather forecastSiwiałka, Poland
September
Weather in September
The first month of the autumn, September, is also an enjoyable month in Siwiałka, Poland, with temperature in the range of an average low of 10.4°C (50.7°F) and an average high of 18.5°C (65.3°F).Temperature
The onset of September results in a decrease in the average high-temperature, receding from a warm 23.8°C (74.8°F) in August to an enjoyable 18.5°C (65.3°F). September's average low-temperature reading settles at a fresh 10.4°C (50.7°F).Humidity
The average relative humidity in September in Siwiałka is 74%.Rainfall
In Siwiałka, during September, the rain falls for 12.7 days and regularly aggregates up to 30mm (1.18") of precipitation. Throughout the year, there are 152.8 rainfall days, and 397mm (15.63") of precipitation is accumulated.Snowfall
In Siwiałka, snow does not fall in June through September.Daylight
The average length of the day in September in Siwiałka is 12h and 42min.On the first day of the month, sunrise is at 05:54 and sunset at 19:36. On the last day of September, sunrise is at 06:46 and sunset at 18:24 CEST.
Sunshine
In Siwiałka, the average sunshine in September is 8h.UV index
In September, the average daily maximum UV index in Siwiałka, Poland, is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: A daily high UV index of 3 in September leads to these guidelines:
Exercise prevention - Warding off sunburn is urged. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Siwiałka, Poland
- Average high temperature in September: 18.5°C
The warmest month (with the highest average high temperature) is August (23.8°C).
The month with the lowest average high temperature is January (0°C).
- Average low temperature in September: 10.4°C
The month with the highest average low temperature is August (13.8°C).
The coldest month (with the lowest average low temperature) is January (-3.5°C).
Average pressure in September
Siwiałka, Poland
- Average pressure in September: 1016.5mbar
The month with the highest atmospheric pressure is October (1016.9mbar).
The month with the lowest atmospheric pressure is July (1013.3mbar).
Average wind speed in September
Siwiałka, Poland
- Average wind speed in September: 12.1km/h
The windiest month (with the highest average wind speed) is December (14.1km/h).
The calmest month (with the lowest average wind speed) is August (11km/h).
Average humidity in September
Siwiałka, Poland
- Average humidity in September: 74%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is April (69%).
Average rainfall in September
Siwiałka, Poland
- Average rainfall in September: 30mm
The wettest month (with the highest rainfall) is July (57mm).
The driest month (with the least rainfall) is April (16mm).
Average rainfall days in September
Siwiałka, Poland
- Average rainfall days in September: 12.7 days
The month with the highest number of rainy days is July (18.9 days).
The month with the least rainy days is February (7.8 days).
Average snowfall in September
Siwiałka, Poland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (87mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Siwiałka, Poland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (13.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Siwiałka, Poland
- Average daylight in September: 12h and 42min
The month with the longest days is June (Average daylight: 17h and 6min).
The month with the shortest days is December (Average daylight: 7h and 30min).
- Average sunshine in September: 8h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).
Average sunshine days in September
Siwiałka, Poland
- Average sunshine days in September: 15.1 days
The month with the most sunshine days is October (16.9 days).
The month with the least sunshine days is July (9.5 days).
Average UV index in September
Siwiałka, Poland
- Average UV index in September: 3
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, November and December (UV index 1).
Average cloud cover in September
Siwiałka, Poland
- Average cloud cover in September: 42
The month with the most cloud cover is January (Cloud cover 73).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in September
Siwiałka, 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).
