September weather forecastGronówek, Poland

September

Weather in September

The first month of the autumn, September, is still a comfortable month in Gronówek, Poland, with an average temperature ranging between max 19.5°C (67.1°F) and min 11.3°C (52.3°F).

Temperature

Start of September brings a shift in the average high-temperature, falling from August's warm 25°C (77°F) to a refreshing 19.5°C (67.1°F). In September, Gronówek's temperature tends to fall to an average low of 11.3°C (52.3°F) during the night.

Humidity

In Gronówek, the average relative humidity in September is 71%.

Rainfall

In September, in Gronówek, the rain falls for 13.3 days. Throughout September, 34mm (1.34") of precipitation is accumulated. In Gronówek, during the entire year, the rain falls for 163.4 days and collects up to 454mm (17.87") of precipitation.

Snowfall

In Gronówek, snow does not fall in May through September.

Daylight

In Gronówek, the average length of the day in September is 12h and 38min.
On the first day of the month, sunrise is at 05:58 and sunset at 19:31. On the last day of September, in Gronówek, sunrise is at 06:45 and sunset at 18:25 CEST.

Sunshine

In September, the average sunshine in Gronówek, Poland, is 8.2h.

UV index

In September, the average daily maximum UV index in Gronówek is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: A maximum daily UV index of 4 during September morphs into the following directions:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. To cut down UV radiation exposure by about half, sport a wide-brim hat.

Updated: Feb 1, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

In September, in Gronówek, the average high-temperature is 19.5°C (67.1°F), and the average low-temperature is 11.3°C (52.3°F).

In Gronówek, Poland, the average relative humidity in September is 71%.

In Gronówek, in September, during 13.3 rainfall days, 34mm (1.34") of precipitation is typically accumulated.

In Gronówek, Poland, snow does not fall in May through September.

In Gronówek, Poland, in September, it doesn't snow. In October, it regularly snows.

The average day length in September in Gronówek, Poland, is 12h and 38min.

On the first day of September in Gronówek, sunrise is at 05:58 and sunset at 19:31. On the last day of the month, sunrise is at 06:45 and sunset at 18:25 CEST.

In Gronówek, the average sunshine duration in September is 8.2h.

In Gronówek, Poland, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from unprotected exposure to UV radiation.

Today

Tomorrow

Long-term

Year J F M A M J J A September O N D

Aug

September

Oct

Average high temperature

25°C

19.5°C

13.1°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

12.1km/h

12.7km/h

14km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

14.4

14.5

16.2

Average UV index

Average cloud cover

Average visibility

Average temperature in September
Gronówek, Poland

Average high temperature in September: 19.5°C

The warmest month (with the highest average high temperature) is August (25°C).
The month with the lowest average high temperature is January (0.3°C).

Average low temperature in September: 11.3°C

The month with the highest average low temperature is August (15.6°C).
The coldest month (with the lowest average low temperature) is January (-3°C).

Average pressure in September
Gronówek, Poland

Average pressure in September: 1017.4mbar

The month with the highest atmospheric pressure is October (1018.2mbar).
The month with the lowest atmospheric pressure is July (1014mbar).

Average wind speed in September
Gronówek, Poland

Average wind speed in September: 12.2km/h

The windiest month (with the highest average wind speed) is December (14.8km/h).
The calmest month (with the lowest average wind speed) is August (11.2km/h).

Average humidity in September
Gronówek, Poland

Average humidity in September: 71%

The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is August (64%).

Average rainfall in September
Gronówek, Poland

Average rainfall in September: 34mm

The wettest months (with the highest rainfall) are May and June (57mm).
The driest month (with the least rainfall) is April (21mm).

Average rainfall days in September
Gronówek, Poland

Average rainfall days in September: 13.3 days

The month with the highest number of rainy days is July (19.3 days).
The month with the least rainy days is February (9.7 days).

Average snowfall in September
Gronówek, Poland

Average snowfall in September: 0mm

The month with the highest snowfall is January (110mm).
The months with the least snowfall are May, June, July, August and September (0mm).

Average snowfall days in September
Gronówek, Poland

Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (15.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Gronówek, 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: 7h and 54min).

Average sunshine in September: 8h and 12min

The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).