September weather forecastSłupcza, Poland

September

Weather in September

September, the first month of the autumn in Słupcza, is still a refreshing month, with an average temperature fluctuating between 10.8°C (51.4°F) and 19.7°C (67.5°F).

Temperature

September's arrival coincides with a drop in the average high-temperature, decreasing from August's moderately hot 25.6°C (78.1°F) to a refreshing 19.7°C (67.5°F). An average nighttime temperature of 10.8°C (51.4°F) is observed during September.

Humidity

In September, the average relative humidity is 71%.

Rainfall

In September, the rain falls for 11.9 days. Throughout September, 28mm (1.1") of precipitation is accumulated. Throughout the year, there are 142.2 rainfall days, and 417mm (16.42") of precipitation is accumulated.

Snowfall

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

Daylight

In Słupcza, Poland, the average length of the day in September is 12h and 38min.
On the first day of September, sunrise is at 05:47 and sunset at 19:17. On the last day of the month, sunrise is at 06:32 and sunset at 18:12 CEST.

Sunshine

The average sunshine in September is 8.2h.

UV index

In September, the average daily maximum UV index in Słupcza is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: The UV index of 4 during September translates into the following guidance:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.

Updated: Jul 11, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

In September, in Słupcza, the average high-temperature is 19.7°C (67.5°F), and the average low-temperature is 10.8°C (51.4°F).

In September, the average relative humidity is 71%.

In September, the rain falls for 11.9 days. Throughout September, 28mm (1.1") of precipitation is accumulated.

May through September are months without snowfall.

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

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

In September, on the first day of the month, sunrise is at 05:47 and sunset at 19:17. On the last day of the month, sunrise is at 06:32 and sunset at 18:12 CEST.

In September, the average sunshine duration is 8.2h.

In Słupcza, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate health threat 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

25.6°C

19.7°C

13.1°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

10km/h

10.7km/h

11.5km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

18.5

16.5

17.2

Average UV index

Average cloud cover

Average visibility

Average temperature in September
Słupcza, Poland

Average high temperature in September: 19.7°C

The warmest month (with the highest average high temperature) is August (25.6°C).
The month with the lowest average high temperature is January (0.2°C).

Average low temperature in September: 10.8°C

The months with the highest average low temperature are July and August (14.8°C).
The coldest month (with the lowest average low temperature) is January (-3.9°C).

Average pressure in September
Słupcza, Poland

Average pressure in September: 1017.7mbar

The month with the highest atmospheric pressure is October (1018.9mbar).
The month with the lowest atmospheric pressure is July (1014.1mbar).

Average wind speed in September
Słupcza, Poland

Average wind speed in September: 10.2km/h

The windiest month (with the highest average wind speed) is December (12.3km/h).
The calmest month (with the lowest average wind speed) is August (9.1km/h).

Average humidity in September
Słupcza, Poland

Average humidity in September: 71%

The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (66%).

Average rainfall in September
Słupcza, Poland

Average rainfall in September: 28mm

The wettest month (with the highest rainfall) is July (54mm).
The driest month (with the least rainfall) is November (24mm).

Average rainfall days in September
Słupcza, Poland

Average rainfall days in September: 11.9 days

The month with the highest number of rainy days is July (16.6 days).
The month with the least rainy days is February (7.4 days).

Average snowfall in September
Słupcza, Poland

Average snowfall in September: 0mm

The month with the highest snowfall is January (144mm).
The months with the least snowfall are May, June, July, August and September (0mm).

Average snowfall days in September
Słupcza, Poland

Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (17.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in September: 12h and 36min

The month with the longest days is June (Average daylight: 16h and 24min).
The month with the shortest days is December (Average daylight: 8h and 6min).

Average sunshine in September: 8h and 12min

The month with the most sunshine is August (Average sunshine: 10h and 54min).
The months with the least sunshine are January and February (Average sunshine: 3h and 0min).