September weather forecastSerniki, Poland
September
Weather in September
September, the first month of the autumn in Serniki, is still a refreshing month, with an average temperature fluctuating between 10.4°C (50.7°F) and 19.3°C (66.7°F).Temperature
During the transition into September, Serniki observes a decrease in the average high-temperature, falling from a warm 25°C (77°F) in August to an enjoyable 19.3°C (66.7°F). Throughout September, an average low-temperature of 10.4°C (50.7°F) is experienced in Serniki.Humidity
In Serniki, the average relative humidity in September is 73%.Rainfall
In Serniki, Poland, during September, the rain falls for 11.7 days and regularly aggregates up to 33mm (1.3") of precipitation. In Serniki, Poland, during the entire year, the rain falls for 149.5 days and collects up to 457mm (17.99") of precipitation.Snowfall
In Serniki, snow does not fall in May through September.Daylight
In Serniki, the average length of the day in September is 12h and 38min.On the first day of September, sunrise is at 05:42 and sunset at 19:15. On the last day of the month, sunrise is at 06:29 and sunset at 18:09 CEST.
Sunshine
In September, the average sunshine in Serniki is 7.8h.UV index
The average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: The daily high UV index of 3 during September translates into the following recommendations:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. 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
Serniki, Poland
- Average high temperature in September: 19.3°C
The warmest month (with the highest average high temperature) is August (25°C).
The month with the lowest average high temperature is January (-0.8°C).
- Average low temperature in September: 10.4°C
The month with the highest average low temperature is August (14.6°C).
The coldest month (with the lowest average low temperature) is January (-4.3°C).
Average pressure in September
Serniki, Poland
- Average pressure in September: 1017.5mbar
The month with the highest atmospheric pressure is October (1018.8mbar).
The month with the lowest atmospheric pressure is July (1013.8mbar).
Average wind speed in September
Serniki, Poland
- Average wind speed in September: 10.9km/h
The windiest month (with the highest average wind speed) is December (13.4km/h).
The calmest month (with the lowest average wind speed) is August (9.7km/h).
Average humidity in September
Serniki, Poland
- Average humidity in September: 73%
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is August (67%).
Average rainfall in September
Serniki, Poland
- Average rainfall in September: 33mm
The wettest month (with the highest rainfall) is May (62mm).
The driest month (with the least rainfall) is November (24mm).
Average rainfall days in September
Serniki, Poland
- Average rainfall days in September: 11.7 days
The month with the highest number of rainy days is July (19.3 days).
The month with the least rainy days is February (6.7 days).
Average snowfall in September
Serniki, Poland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (158mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in September
Serniki, Poland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (16.9 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
Serniki, Poland
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 30min).
The month with the shortest days is December (Average daylight: 7h and 54min).
- Average sunshine in September: 7h and 48min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).
Average sunshine days in September
Serniki, Poland
- Average sunshine days in September: 15.9 days
The months with the most sunshine days are October and November (16.1 days).
The month with the least sunshine days is July (9.1 days).
Average UV index in September
Serniki, Poland
- Average UV index in September: 3
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in September
Serniki, Poland
- Average cloud cover in September: 39
The month with the most cloud cover is January (Cloud cover 77).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in September
Serniki, Poland
- Average visibility in September: 9km
The months with the highest visibility are April, May, June, July, August, September and October (9km).
The month with the lowest visibility is January (6km).





