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
Weather in September
Temperature
September's arrival comes with a decrease in the average high-temperature, moving from a moderately hot 23.5°C (74.3°F) in August to an enjoyable 18.3°C (64.9°F). During September, an average low-temperature of 9.7°C (49.5°F) is observed.Humidity
The average relative humidity in September in Knis is 77%.Rainfall
In Knis, in September, it is raining for 12.8 days, with typically 29mm (1.14") of accumulated precipitation. In Knis, during the entire year, the rain falls for 154.2 days and collects up to 431mm (16.97") of precipitation.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 42min.On the first day of September, sunrise is at 05:43 and sunset at 19:24. On the last day of the month, sunrise is at 06:34 and sunset at 18:12 CEST.
Sunshine
In September, the average sunshine in Knis is 7.7h.UV index
The average daily maximum UV index in September in Knis is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: A maximum daily UV index of 3 during September morphs into the following directions:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Frequently asked questions
What is the usual temperature for Knis in September?
What is the average humidity in September in Knis?
How much does it rain in Knis in September?
When it does not snow in Knis?
Does it snow in Knis in September?
How many hours of daylight does Knis have in September?
When is the sunrise / sunset in September in Knis?
How many hours of sunshine does Knis have in September?
What is the UV index intensity in September in Knis?
Average temperature in September
Knis, Poland
- Average high temperature in September: 18.3°C
The warmest month (with the highest average high temperature) is August (23.5°C).
The month with the lowest average high temperature is January (-1.4°C).
- Average low temperature in September: 9.7°C
The month with the highest average low temperature is August (13.2°C).
The coldest month (with the lowest average low temperature) is January (-5.1°C).
Average pressure in September
Knis, Poland
- Average pressure in September: 1016.5mbar
The month with the highest atmospheric pressure is October (1017.4mbar).
The month with the lowest atmospheric pressure is July (1013.1mbar).
Average wind speed in September
Knis, Poland
- Average wind speed in September: 12.6km/h
The windiest month (with the highest average wind speed) is December (15.1km/h).
The calmest month (with the lowest average wind speed) is August (10.8km/h).
Average humidity in September
Knis, Poland
- Average humidity in September: 77%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is April (72%).
Average rainfall in September
Knis, Poland
- Average rainfall in September: 29mm
The wettest month (with the highest rainfall) is May (60mm).
The driest month (with the least rainfall) is April (23mm).
Average rainfall days in September
Knis, Poland
- Average rainfall days in September: 12.8 days
The month with the highest number of rainy days is July (19.2 days).
The month with the least rainy days is January (6.9 days).
Average snowfall in September
Knis, Poland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (112mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Knis, Poland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (13.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Knis, Poland
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 17h and 0min).
The month with the shortest days is December (Average daylight: 7h and 30min).
- Average sunshine in September: 7h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The months with the least sunshine are January and February (Average sunshine: 2h and 42min).
Average sunshine days in September
Knis, Poland
- Average sunshine days in September: 15 days
The month with the most sunshine days is October (16.5 days).
The month with the least sunshine days is July (9.6 days).
Average UV index in September
Knis, 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
Knis, Poland
- Average cloud cover in September: 44
The month with the most cloud cover is January (Cloud cover 74).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility in September
Knis, Poland
- Average visibility in September: 9km
The months with the highest visibility are April, May, June, July, August, September and October (9km).
The months with the lowest visibility are January and February (7km).
Knis, Poland
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