September weather forecastSiomki, Poland

September

Weather in September

The first month of the autumn, September, is still a comfortable month in Siomki, Poland, with an average temperature varying between 19.2°C (66.6°F) and 10.7°C (51.3°F).

Temperature

In Siomki, the beginning of September is marked by a lowered average high-temperature, shifting from August's moderately hot 24.8°C (76.6°F) to an enjoyable 19.2°C (66.6°F). September nights cool down to an average low-temperature of 10.7°C (51.3°F).

Humidity

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

Rainfall

In September, the rain falls for 11.1 days. Throughout September, 33mm (1.3") of precipitation is accumulated. Throughout the year, there are 146.1 rainfall days, and 417mm (16.42") of precipitation is accumulated.

Snowfall

June through September are months without snowfall in Siomki.

Daylight

In September, the average length of the day is 12h and 38min.
On the first day of the month, sunrise is at 05:55 and sunset at 19:27. On the last day of September, sunrise is at 06:41 and sunset at 18:21 CEST.

Sunshine

The average sunshine in September is 8.2h.

UV index

In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: The daily high UV index of 4 in September translates into this advice:
Be vigilant - A duty to shield skin and eyes from injury exists. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.

Updated: Aug 7, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

In Siomki, 19.2°C (66.6°F) is the average high-temperature and 10.7°C (51.3°F) is the average low-temperature during September.

In September, the average relative humidity is 72%.

In Siomki, in September, it is raining for 11.1 days, with typically 33mm (1.3") of accumulated precipitation.

In Siomki, snow does not fall in June through September.

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

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

On the first day of September, sunrise is at 05:55 and sunset at 19:27. On the last day of the month, sunrise is at 06:41 and sunset at 18:21 CEST.

In September, the average sunshine duration is 8.2h.

In Siomki, 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

24.8°C

19.2°C

12.9°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

12.1km/h

12.9km/h

14.1km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

17.3

17.2

16.6

Average UV index

Average cloud cover

Average visibility

Average temperature in September
Siomki, Poland

Average high temperature in September: 19.2°C

The warmest month (with the highest average high temperature) is August (24.8°C).
The month with the lowest average high temperature is January (0°C).

Average low temperature in September: 10.7°C

The month with the highest average low temperature is August (14.9°C).
The coldest month (with the lowest average low temperature) is January (-3.7°C).

Average pressure in September
Siomki, Poland

Average pressure in September: 1017.5mbar

The month with the highest atmospheric pressure is October (1018.3mbar).
The month with the lowest atmospheric pressure is July (1014mbar).

Average wind speed in September
Siomki, Poland

Average wind speed in September: 12.3km/h

The windiest month (with the highest average wind speed) is December (15.5km/h).
The calmest month (with the lowest average wind speed) is August (11.2km/h).

Average humidity in September
Siomki, Poland

Average humidity in September: 72%

The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (65%).

Average rainfall in September
Siomki, Poland

Average rainfall in September: 33mm

The wettest month (with the highest rainfall) is May (56mm).
The driest month (with the least rainfall) is November (22mm).

Average rainfall days in September
Siomki, Poland

Average rainfall days in September: 11.1 days

The month with the highest number of rainy days is May (18.5 days).
The month with the least rainy days is January (8.3 days).

Average snowfall in September
Siomki, Poland

Average snowfall in September: 0mm

The month with the highest snowfall is January (124mm).
The months with the least snowfall are June, July, August and September (0mm).

Average snowfall days in September
Siomki, 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
Siomki, 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 12min

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The months with the least sunshine are January and February (Average sunshine: 3h and 0min).