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 brings a decrease in the average high-temperature, falling from August's moderately hot 23.4°C (74.1°F) to an enjoyable 18°C (64.4°F). In the month of September, the temperature generally rests at an average low of 8.5°C (47.3°F).Humidity
The average relative humidity in September is 78%.Rainfall
In Biesna, during September, the rain falls for 13.6 days and regularly aggregates up to 40mm (1.57") of precipitation. Throughout the year, in Biesna, there are 168.5 rainfall days, and 575mm (22.64") of precipitation is accumulated.Snowfall
June through September are months without snowfall in Biesna.Daylight
In Biesna, the average length of the day in September is 12h and 37min.On the first day of September, sunrise is at 05:52 and sunset at 19:19. On the last day of the month, sunrise is at 06:35 and sunset at 18:16 CEST.
Sunshine
In September, the average sunshine in Biesna is 8.3h.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 ordinary individuals.Note: In September, a regular UV index of 3 translates into these guidelines:
Take precautions - Protection against skin and eye damage is obliged. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Frequently asked questions
What is the temperature in September in Biesna?
What is the average humidity in September in Biesna?
How much does it rain in Biesna in September?
When it does not snow in Biesna?
Does it snow in Biesna in September?
How many hours of daylight does Biesna have in September?
When are sunrise and sunset in September in Biesna?
How long on average sun shines in September in Biesna?
How high is the UV index in September in Biesna?
Average temperature in September
Biesna, Poland
- Average high temperature in September: 18°C
The warmest month (with the highest average high temperature) is August (23.4°C).
The month with the lowest average high temperature is January (-0.8°C).
- Average low temperature in September: 8.5°C
The month with the highest average low temperature is July (12.6°C).
The coldest month (with the lowest average low temperature) is January (-5.5°C).
Average pressure in September
Biesna, Poland
- Average pressure in September: 1017.7mbar
The months with the highest atmospheric pressure are October and December (1019mbar).
The months with the lowest atmospheric pressure are June and July (1014.4mbar).
Average wind speed in September
Biesna, Poland
- Average wind speed in September: 8.4km/h
The windiest month (with the highest average wind speed) is March (11.4km/h).
The calmest month (with the lowest average wind speed) is August (7.4km/h).
Average humidity in September
Biesna, Poland
- Average humidity in September: 78%
The month with the highest relative humidity is January (90%).
The months with the lowest relative humidity are April and August (75%).
Average rainfall in September
Biesna, Poland
- Average rainfall in September: 40mm
The wettest month (with the highest rainfall) is May (88mm).
The driest months (with the least rainfall) are March and November (31mm).
Average rainfall days in September
Biesna, Poland
- Average rainfall days in September: 13.6 days
The month with the highest number of rainy days is May (19.8 days).
The month with the least rainy days is February (8.5 days).
Average snowfall in September
Biesna, Poland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (204mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Biesna, Poland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (16.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Biesna, Poland
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 12min).
The month with the shortest days is December (Average daylight: 8h and 12min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 3h and 30min).
Average sunshine days in September
Biesna, Poland
- Average sunshine days in September: 13.7 days
The month with the most sunshine days is November (15.3 days).
The month with the least sunshine days is June (7.7 days).
Average UV index in September
Biesna, Poland
- Average UV index in September: 3
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in September
Biesna, Poland
- Average cloud cover in September: 38
The month with the most cloud cover is February (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in September
Biesna, Poland
- Average visibility in September: 9km
The months with the highest visibility are March, April, June, July, August, September, October and November (9km).
The months with the lowest visibility are January and February (7km).
Biesna, Poland
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