September weather forecast
Siecień, Poland

September

Weather in September

The first month of the autumn, September, is still a comfortable month in Siecień, Poland, with temperature in the range of an average high of 19.1°C (66.4°F) and an average low of 10.5°C (50.9°F).

Temperature

The start of September involves a temperature drop, moving from a moderately hot 24.7°C (76.5°F) in August to a refreshing 19.1°C (66.4°F). Siecień's nighttime temperature in September falls to an average of 10.5°C (50.9°F).

Humidity

The average relative humidity in September is 72%.

Rainfall

In Siecień, in September, it is raining for 9.2 days, with typically 21mm (0.83") of accumulated precipitation. In Siecień, during the entire year, the rain falls for 138.8 days and collects up to 352mm (13.86") of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

The average length of the day in September in Siecień is 12h and 40min.
On the first day of the month, sunrise is at 05:53 and sunset at 19:29. On the last day of September, sunrise is at 06:42 and sunset at 18:21 CEST.

Sunshine

In September, the average sunshine is 8h.

UV index

The average daily maximum UV index in September in Siecień is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index of 4 in September converts into the following recommendations:
Be vigilant - Suggestions to stave off sun damage are provided. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.

Frequently asked questions

What is the temperature in September?
The high-temperature during September is 19.1°C (66.4°F) and the low-temperature is 10.5°C (50.9°F).
What is the average humidity in September?
The average relative humidity in September is 72%.
How much does it rain in September?
In September, the rain falls for 9.2 days. Throughout September, 21mm (0.83") of precipitation is accumulated.
When it does not snow?
June through September are months without snowfall.
Does it snow in September?
In Siecień, in September, it doesn't snow. In October, it regularly snows.
How many hours of daylight does Siecień have in September?
The average day length in September is 12h and 40min.
When are sunrise and sunset in September?
On the first day of September, sunrise is at 05:53 and sunset at 19:29. On the last day of the month, sunrise is at 06:42 and sunset at 18:21 CEST.
How many hours of sunshine does Siecień have in September?
In Siecień, the average sunshine duration in September is 8h.
What is the UV index intensity in September?
In Siecień, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health threat from unsafe exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in September - Siecień, Poland
Average temperature in September
Siecień, Poland
  • Average high temperature in September: 19.1°C

The warmest month (with the highest average high temperature) is August (24.7°C).
The month with the lowest average high temperature is January (-0.3°C).

  • Average low temperature in September: 10.5°C

The month with the highest average low temperature is August (14.7°C).
The coldest month (with the lowest average low temperature) is January (-3.6°C).

Average pressure in September - Siecień, Poland
Average pressure in September
Siecień, Poland
  • Average pressure in September: 1017.1mbar

The month with the highest atmospheric pressure is October (1017.8mbar).
The month with the lowest atmospheric pressure is July (1013.5mbar).

Average wind speed in September - Siecień, Poland
Average wind speed in September
Siecień, Poland
  • Average wind speed in September: 12.1km/h

The windiest month (with the highest average wind speed) is December (15.1km/h).
The calmest month (with the lowest average wind speed) is August (10.8km/h).

Average humidity in September - Siecień, Poland
Average humidity in September
Siecień, 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 (67%).

Average rainfall in September - Siecień, Poland
Average rainfall in September
Siecień, Poland
  • Average rainfall in September: 21mm

The wettest month (with the highest rainfall) is May (51mm).
The driest month (with the least rainfall) is April (17mm).

Average rainfall days in September - Siecień, Poland
Average rainfall days in September
Siecień, Poland
  • Average rainfall days in September: 9.2 days

The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (7.3 days).

Average snowfall in September - Siecień, Poland
Average snowfall in September
Siecień, Poland
  • Average snowfall in September: 0mm

The month with the highest snowfall is January (81mm).
The months with the least snowfall are June, July, August and September (0mm).

Average snowfall days in September - Siecień, Poland
Average snowfall days in September
Siecień, Poland
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (11.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September / Average sunshine in September - Siecień, Poland
Average daylight in September /
Average sunshine in September
Siecień, Poland
  • Average daylight in September: 12h and 4min

The month with the longest days is June (Average daylight: 16h and 48min).
The month with the shortest days is December (Average daylight: 7h and 42min).

  • Average sunshine in September: 8h and 0min

The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).

Average sunshine days in September - Siecień, Poland
Average sunshine days in September
Siecień, Poland
  • Average sunshine days in September: 18 days

The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is July (11.1 days).

Average UV index in September - Siecień, Poland
Average UV index in September
Siecień, Poland
  • Average UV index in September: 4

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).

Average cloud cover in September - Siecień, Poland
Average cloud cover in September
Siecień, Poland
  • Average cloud cover in September: 41

The month with the most cloud cover is January (Cloud cover 72).
The month with the least cloud cover is August (Cloud cover 32).

Average visibility in September - Siecień, Poland
Average visibility in September
Siecień, Poland
  • Average visibility in September: 9km

The months with the highest visibility are March, April, May, June, July, August, September and October (9km).
The month with the lowest visibility is January (7km).

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