September weather forecastŚliwnik, Poland

September

Weather in September

The first month of the autumn, September, is still a comfortable month in Śliwnik, Poland, with temperature in the range of an average low of 11.4°C (52.5°F) and an average high of 19.7°C (67.5°F).

Temperature

Śliwnik's transition into September involves a shift in temperature, receding from a warm 25.3°C (77.5°F) in August to a refreshing 19.7°C (67.5°F). During September, Śliwnik observes a consistent average nighttime temperature of 11.4°C (52.5°F).

Humidity

In Śliwnik, Poland, the average relative humidity in September is 72%.

Rainfall

September is the month with the least rainfall. Rain falls for 7.8 days and accumulates 14mm (0.55") of precipitation.

Snowfall

In Śliwnik, Poland, snow does not fall in June through September.

Daylight

In Śliwnik, the average length of the day in September is 12h and 38min.
On the first day of September in Śliwnik, sunrise is at 06:11 and sunset at 19:44. On the last day of the month, sunrise is at 06:57 and sunset at 18:37 CEST.

Sunshine

In September, the average sunshine is 8.8h.

UV index

In Śliwnik, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum UV index of 4 during September translates into these guidelines:
Make use of precautions - Shielding skin and eyes from injury is a requirement. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.

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

Frequently asked questions

The high-temperature during September is 19.7°C (67.5°F) and the low-temperature is 11.4°C (52.5°F).

In September, the average relative humidity in Śliwnik, Poland, is 72%.

The month with the least rainfall in Śliwnik, Poland, is September, when the rain falls for 7.8 days and typically collects 14mm (0.55") of precipitation.

In Śliwnik, in September, during 7.8 rainfall days, 14mm (0.55") of precipitation is typically accumulated.

In Śliwnik, Poland, snow does not fall in June through September.

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

In September, the average day length in Śliwnik, Poland, is 12h and 38min.

On the first day of September, sunrise is at 06:11 and sunset at 19:44. On the last day of the month, sunrise is at 06:57 and sunset at 18:37 CEST.

The average sunshine duration in September is 8.8h.

The average daily maximum UV index in September in Śliwnik is 4. A UV Index reading of 3 to 5 represents a medium health risk 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

25.3°C

19.7°C

13.8°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

10.7km/h

11km/h

12.3km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

19.8

21.2

20.5

Average UV index

Average cloud cover

Average visibility

Average temperature in September
Śliwnik, Poland

Average high temperature in September: 19.7°C

The warmest month (with the highest average high temperature) is August (25.3°C).
The month with the lowest average high temperature is January (1.7°C).

Average low temperature in September: 11.4°C

The month with the highest average low temperature is August (15.3°C).
The coldest month (with the lowest average low temperature) is January (-2°C).

Average pressure in September
Śliwnik, Poland

Average pressure in September: 1017.5mbar

The month with the highest atmospheric pressure is October (1017.8mbar).
The month with the lowest atmospheric pressure is July (1014.5mbar).

Average wind speed in September
Śliwnik, Poland

Average wind speed in September: 10.6km/h

The windiest month (with the highest average wind speed) is December (14.1km/h).
The calmest month (with the lowest average wind speed) is August (9.9km/h).

Average humidity in September
Śliwnik, Poland

Average humidity in September: 72%

The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is August (66%).

Average rainfall in September
Śliwnik, Poland

Average rainfall in September: 14mm

The wettest month (with the highest rainfall) is July (40mm).
The driest month (with the least rainfall) is September (14mm).

Average rainfall days in September
Śliwnik, Poland

Average rainfall days in September: 7.8 days

The month with the highest number of rainy days is May (14.2 days).
The month with the least rainy days is February (7.4 days).

Average snowfall in September
Śliwnik, Poland

Average snowfall in September: 0mm

The month with the highest snowfall is January (120mm).
The months with the least snowfall are June, July, August and September (0mm).

Average snowfall days in September
Śliwnik, Poland

Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (12.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Śliwnik, Poland

Average daylight in September: 12h and 36min

The month with the longest days is June (Average daylight: 16h and 36min).
The month with the shortest days is December (Average daylight: 7h and 54min).

Average sunshine in September: 8h 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: 3h and 12min).