September weather forecastGrudno, Poland
September
Weather in September
The first month of the autumn, September, is still a refreshing month in Grudno, Poland, with an average temperature varying between 17.8°C (64°F) and 9.8°C (49.6°F).Temperature
Grudno's progression into September involves a drop in the average high-temperature, receding from a pleasant 22.9°C (73.2°F) in August to an enjoyable 17.8°C (64°F). Grudno, in September, experiences an average temperature of 9.8°C (49.6°F) at night.Humidity
In September, the average relative humidity is 76%.Rainfall
In Grudno, in September, it is raining for 13.8 days, with typically 43mm (1.69") of accumulated precipitation. In Grudno, during the entire year, the rain falls for 162.4 days and collects up to 574mm (22.6") of precipitation.Snowfall
In Grudno, snow does not fall in June through September.Daylight
In Grudno, Poland, the average length of the day in September is 12h and 38min.On the first day of the month, sunrise is at 06:10 and sunset at 19:41. On the last day of September, sunrise is at 06:55 and sunset at 18:35 CEST.
Sunshine
The average sunshine in September is 8.5h.UV index
The average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum daily UV index of 3 during September morphs into the following directions:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. Minimize direct exposure to the Sun during midday when its radiation is at its peak. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Grudno, Poland
- Average high temperature in September: 17.8°C
The warmest month (with the highest average high temperature) is August (22.9°C).
The month with the lowest average high temperature is January (0.1°C).
- Average low temperature in September: 9.8°C
The month with the highest average low temperature is August (13.7°C).
The coldest month (with the lowest average low temperature) is January (-4.1°C).
Average pressure in September
Grudno, Poland
- Average pressure in September: 1017.7mbar
The month with the highest atmospheric pressure is October (1018.2mbar).
The month with the lowest atmospheric pressure is July (1014.7mbar).
Average wind speed in September
Grudno, Poland
- Average wind speed in September: 9.7km/h
The windiest month (with the highest average wind speed) is December (13.5km/h).
The calmest month (with the lowest average wind speed) is August (8.9km/h).
Average humidity in September
Grudno, Poland
- Average humidity in September: 76%
The month with the highest relative humidity is January (90%).
The months with the lowest relative humidity are April and August (72%).
Average rainfall in September
Grudno, Poland
- Average rainfall in September: 43mm
The wettest month (with the highest rainfall) is June (73mm).
The driest months (with the least rainfall) are April and November (28mm).
Average rainfall days in September
Grudno, Poland
- Average rainfall days in September: 13.8 days
The month with the highest number of rainy days is July (18.8 days).
The month with the least rainy days is February (7 days).
Average snowfall in September
Grudno, Poland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (210mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Grudno, Poland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (15.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Grudno, 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: 8h and 0min).
- Average sunshine in September: 8h and 30min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in September
Grudno, Poland
- Average sunshine days in September: 14.2 days
The month with the most sunshine days is October (17.3 days).
The months with the least sunshine days are May and June (9.3 days).
Average UV index in September
Grudno, 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 November and December (UV index 1).
Average cloud cover in September
Grudno, Poland
- Average cloud cover in September: 39
The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in September
Grudno, 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).
