September weather forecastSieniczno, Poland

September

Weather in September

The first month of the autumn, September, is still a comfortable month in Sieniczno, Poland, with an average temperature fluctuating between 10.3°C (50.5°F) and 18.6°C (65.5°F).

Temperature

Sieniczno's September weather shows a moderate shift in high-temperatures, falling from August's warm 24.3°C (75.7°F) to a comfortable 18.6°C (65.5°F). The low-temperature average for Sieniczno during September stands at a fresh 10.3°C (50.5°F).

Humidity

The average relative humidity in September is 74%.

Rainfall

In Sieniczno, Poland, in September, it is raining for 13.1 days, with typically 42mm (1.65") of accumulated precipitation. Throughout the year, in Sieniczno, there are 169.4 rainfall days, and 571mm (22.48") of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Daylight

In September, the average length of the day is 12h and 37min.
On the first day of September, sunrise is at 05:56 and sunset at 19:25. On the last day of the month, sunrise is at 06:40 and sunset at 18:21 CEST.

Sunshine

In September, the average sunshine is 8.3h.

UV index

In Sieniczno, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the average person.
Note: In September, the maximum UV index of 4 transforms into these recommendations:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.

Updated: Jan 30, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The average high-temperature, in September, in Sieniczno, is 18.6°C (65.5°F), while the average low-temperature is 10.3°C (50.5°F).

In Sieniczno, Poland, the average relative humidity in September is 74%.

In Sieniczno, during September, the rain falls for 13.1 days and regularly aggregates up to 42mm (1.65") of precipitation.

June through September are months without snowfall in Sieniczno, Poland.

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

In Sieniczno, Poland, the average day length in September is 12h and 37min.

In September, on the first day of the month, sunrise is at 05:56 and sunset at 19:25. On the last day of the month, sunrise is at 06:40 and sunset at 18:21 CEST.

In September, the average sunshine duration in Sieniczno, Poland, is 8.3h.

The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium health risk from exposure to Sun's UV rays.

Today

Tomorrow

Long-term

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

Aug

September

Oct

Average high temperature

24.3°C

18.6°C

12.6°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

10.6km/h

11.4km/h

12.6km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

15.3

14.7

14.9

Average UV index

Average cloud cover

Average visibility

Average temperature in September
Sieniczno, Poland

Average high temperature in September: 18.6°C

The warmest month (with the highest average high temperature) is August (24.3°C).
The month with the lowest average high temperature is January (-0.3°C).

Average low temperature in September: 10.3°C

The month with the highest average low temperature is August (14.2°C).
The coldest month (with the lowest average low temperature) is January (-4.1°C).

Average pressure in September
Sieniczno, Poland

Average pressure in September: 1017.7mbar

The month with the highest atmospheric pressure is October (1018.7mbar).
The month with the lowest atmospheric pressure is July (1014.5mbar).

Average wind speed in September
Sieniczno, Poland

Average wind speed in September: 10.9km/h

The windiest month (with the highest average wind speed) is December (14.6km/h).
The calmest month (with the lowest average wind speed) is August (9.8km/h).

Average humidity in September
Sieniczno, Poland

Average humidity in September: 74%

The month with the highest relative humidity is January (89%).
The months with the lowest relative humidity are April and August (69%).

Average rainfall in September
Sieniczno, Poland

Average rainfall in September: 42mm

The wettest month (with the highest rainfall) is May (83mm).
The driest month (with the least rainfall) is November (29mm).

Average rainfall days in September
Sieniczno, Poland

Average rainfall days in September: 13.1 days

The month with the highest number of rainy days is June (21.3 days).
The month with the least rainy days is January (8.8 days).

Average snowfall in September
Sieniczno, Poland

Average snowfall in September: 0mm

The month with the highest snowfall is January (200mm).
The months with the least snowfall are June, July, August and September (0mm).

Average snowfall days in September
Sieniczno, Poland

Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (18.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in September: 12h and 36min

The month with the longest days is June (Average daylight: 16h and 18min).
The month with the shortest days is December (Average daylight: 8h and 6min).

Average sunshine in September: 8h and 18min

The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 3h and 6min).