September weather forecastGrzebsk, Poland
September
Weather in September
September, the first month of the autumn in Grzebsk, is still a refreshing month, with an average temperature varying between 10.3°C (50.5°F) and 18.5°C (65.3°F).Temperature
September implies a gentle temperature shift, with average high-temperatures reducing from August's moderately hot 23.8°C (74.8°F) to a comfortable 18.5°C (65.3°F). Grzebsk cools down to an average low-temperature of 10.3°C (50.5°F) throughout the month of September.Humidity
In September, the average relative humidity is 74%.Rainfall
In Grzebsk, Poland, in September, during 9.8 rainfall days, 22mm (0.87") of precipitation is typically accumulated. Throughout the year, in Grzebsk, there are 127.1 rainfall days, and 279mm (10.98") of precipitation is accumulated.Snowfall
In Grzebsk, Poland, snow does not fall in May through September.Daylight
In September, the average length of the day in Grzebsk is 12h and 41min.On the first day of September in Grzebsk, sunrise is at 05:48 and sunset at 19:26. On the last day of the month, sunrise is at 06:38 and sunset at 18:16 CEST.
Sunshine
In September, the average sunshine is 7.8h.UV index
In Grzebsk, the average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index of 3 in September converts into the following recommendations:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Grzebsk, Poland
- Average high temperature in September: 18.5°C
The warmest months (with the highest average high temperature) are July and August (23.8°C).
The month with the lowest average high temperature is January (-0.8°C).
- Average low temperature in September: 10.3°C
The month with the highest average low temperature is August (13.9°C).
The coldest month (with the lowest average low temperature) is January (-4.3°C).
Average pressure in September
Grzebsk, Poland
- Average pressure in September: 1016.8mbar
The month with the highest atmospheric pressure is October (1017.6mbar).
The month with the lowest atmospheric pressure is July (1013.3mbar).
Average wind speed in September
Grzebsk, Poland
- Average wind speed in September: 11.8km/h
The windiest month (with the highest average wind speed) is December (13.8km/h).
The calmest month (with the lowest average wind speed) is August (10.1km/h).
Average humidity in September
Grzebsk, Poland
- Average humidity in September: 74%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is August (69%).
Average rainfall in September
Grzebsk, Poland
- Average rainfall in September: 22mm
The wettest month (with the highest rainfall) is May (40mm).
The driest month (with the least rainfall) is April (12mm).
Average rainfall days in September
Grzebsk, Poland
- Average rainfall days in September: 9.8 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (6.1 days).
Average snowfall in September
Grzebsk, Poland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (86mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in September
Grzebsk, Poland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (14.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Grzebsk, 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 48min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).
Average sunshine days in September
Grzebsk, Poland
- Average sunshine days in September: 17.7 days
The month with the most sunshine days is October (19.9 days).
The month with the least sunshine days is July (11.8 days).
Average UV index in September
Grzebsk, 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, November and December (UV index 1).
Average cloud cover in September
Grzebsk, Poland
- Average cloud cover in September: 42
The month with the most cloud cover is January (Cloud cover 76).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Grzebsk, Poland
- Average visibility in September: 9km
The months with the highest visibility are March, April, May, June, July, August, September and October (9km).
The months with the lowest visibility are January and February (7km).
