September weather forecastKnyszyn, Poland
September
Weather in September
The first month of the autumn, September, is still a refreshing month in Knyszyn, Poland, with temperature in the range of an average low of 9.5°C (49.1°F) and an average high of 18.3°C (64.9°F).Temperature
A subtle decrease in the average high-temperature marks September, falling from August's moderately hot 24.2°C (75.6°F) to a refreshing 18.3°C (64.9°F). During the nights in September, Knyszyn experiences a consistent average temperature of 9.5°C (49.1°F).Humidity
The average relative humidity in September is 76%.Rainfall
In Knyszyn, in September, during 13.4 rainfall days, 37mm (1.46") of precipitation is typically accumulated. Throughout the year, in Knyszyn, there are 164.4 rainfall days, and 515mm (20.28") of precipitation is accumulated.Snowfall
May through September are months without snowfall in Knyszyn.Daylight
In September, the average length of the day in Knyszyn is 12h and 41min.On the first day of September in Knyszyn, sunrise is at 05:38 and sunset at 19:17. On the last day of the month, sunrise is at 06:29 and sunset at 18:07 CEST.
Sunshine
In September, the average sunshine is 7.5h.UV index
In September, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the average person.Note: The UV index of 3 during September leads to these advisories:
Take necessary precautions - Protection from skin and eye injury is mandatory. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Knyszyn, Poland
- Average high temperature in September: 18.3°C
The warmest months (with the highest average high temperature) are July and August (24.2°C).
The month with the lowest average high temperature is January (-1.5°C).
- Average low temperature in September: 9.5°C
The month with the highest average low temperature is July (13.7°C).
The coldest month (with the lowest average low temperature) is January (-5.1°C).
Average pressure in September
Knyszyn, Poland
- Average pressure in September: 1016.9mbar
The month with the highest atmospheric pressure is October (1018.2mbar).
The month with the lowest atmospheric pressure is July (1013.1mbar).
Average wind speed in September
Knyszyn, Poland
- Average wind speed in September: 11.3km/h
The windiest month (with the highest average wind speed) is December (13.2km/h).
The calmest month (with the lowest average wind speed) is August (9.7km/h).
Average humidity in September
Knyszyn, Poland
- Average humidity in September: 76%
The month with the highest relative humidity is January (92%).
The months with the lowest relative humidity are April and August (70%).
Average rainfall in September
Knyszyn, Poland
- Average rainfall in September: 37mm
The wettest month (with the highest rainfall) is June (69mm).
The driest month (with the least rainfall) is April (27mm).
Average rainfall days in September
Knyszyn, Poland
- Average rainfall days in September: 13.4 days
The month with the highest number of rainy days is July (20.4 days).
The month with the least rainy days is February (7.9 days).
Average snowfall in September
Knyszyn, Poland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (192mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in September
Knyszyn, Poland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (20.3 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
Knyszyn, Poland
- Average daylight in September: 12h and 42min
The month with the longest days is June (Average daylight: 16h and 54min).
The month with the shortest days is December (Average daylight: 7h and 36min).
- Average sunshine in September: 7h and 30min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The months with the least sunshine are January and February (Average sunshine: 2h and 12min).
Average sunshine days in September
Knyszyn, Poland
- Average sunshine days in September: 13.9 days
The month with the most sunshine days is October (15.5 days).
The months with the least sunshine days are January and February (6.8 days).
Average UV index in September
Knyszyn, Poland
- Average UV index in September: 3
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in September
Knyszyn, Poland
- Average cloud cover in September: 43
The months with the most cloud cover are January and February (Cloud cover 79).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in September
Knyszyn, 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).
