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Regierungsbezirk Arnsberg (Dortmund)
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Weather in Regierungsbezirk Arnsberg for September 2026

Your guide to Regierungsbezirk Arnsberg weather in September - trends and predictions

    Temperatures

  • The forecast for the first days of September 2026 in Regierungsbezirk Arnsberg predicts a temperature of 23.6 °C, which is slightly above the historical average.

  • In general, the average temperature in Regierungsbezirk Arnsberg at the beginning of September is 24.6 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 18.1 °C by the end of September.

    • Rain 🌧️

  • The climate of Regierungsbezirk Arnsberg in September is notably wet, with an average of 11 rainy days, and a total of 83.5 mm of precipitation.

    • More

  • Is September a good time to visit Regierungsbezirk Arnsberg? check out the best time to travel to Regierungsbezirk Arnsberg page.

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
19
Dry days
Average rainy days
11
Rainy days
Average snowy days
0
Snow days
Average temperatures
21°/13°
Temperatures
Average wind speed
15 km/h
Avg max wind
Average humidity
65 %
Avg humidity

Regierungsbezirk Arnsberg Weather September

Move between months or click on a day
August
October
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Sunny
22°
2
Sunny
23°
3
Overcast
24°
4
Light rain shower
19°
5
Sunny
27°
6
Sunny
28°
7
Sunny
29°
8
Sunny
25°
9
Light rain shower
23°
10
Patchy rain possible
22°
11
Light rain shower
22°
12
Patchy rain possible
20°
13
Overcast
17°
14
Patchy rain possible
19°
15
Partly cloudy
21°
16
Partly cloudy
21°
17
Light rain shower
21°
18
Overcast
24°
19
Patchy rain possible
24°
20
Partly cloudy
25°
21
Moderate rain
23°
22
Moderate rain
20°
23
Patchy rain possible
17°
24
Partly cloudy
18°
25
Cloudy
18°
26
Sunny
17°
27
Overcast
20°
28
Partly cloudy
18°
29
Light rain shower
19°
30
Partly cloudy
17°

Temperatures trend during September in Regierungsbezirk Arnsberg

See the weather trend as well as the moving average line

September weather in Regierungsbezirk Arnsberg day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Sunny
Sunny
 22° /15° 0.8 mm 6
2 Sept. Sunny
Sunny
 23° /14° 0.1 mm 6
3 Sept. Overcast
Overcast
 24° /15° 0 mm 6
4 Sept. Light rain shower
Light rain shower
 19° /16° 10.4 mm 4
5 Sept. Sunny
Sunny
 27° /15° 1.1 mm 6
6 Sept. Sunny
Sunny
 28° /16° 0.1 mm 7
7 Sept. Sunny
Sunny
 29° /16° 0 mm 7
8 Sept. Sunny
Sunny
 25° /16° 1.9 mm 6
9 Sept. Light rain shower
Light rain shower
 23° /16° 5.5 mm 6
10 Sept. Patchy rain possible
Patchy rain possible
 22° /14° 0.9 mm 5
11 Sept. Light rain shower
Light rain shower
 22° /15° 3.7 mm 5
12 Sept. Patchy rain possible
Patchy rain possible
 20° /12° 0.4 mm 4
13 Sept. Overcast
Overcast
 17° /11° 2.8 mm 4
14 Sept. Patchy rain possible
Patchy rain possible
 19° /10° 0.2 mm 4
15 Sept. Partly cloudy
Partly cloudy
 21° /12° 0.8 mm 5
16 Sept. Partly cloudy
Partly cloudy
 21° /14° 0.9 mm 5
17 Sept. Light rain shower
Light rain shower
 21° /13° 1.7 mm 5
18 Sept. Overcast
Overcast
 24° /15° 0.4 mm 6
19 Sept. Patchy rain possible
Patchy rain possible
 24° /14° 0 mm 5
20 Sept. Partly cloudy
Partly cloudy
 25° /15° 0.2 mm 6
21 Sept. Moderate rain
Moderate rain
 23° /12° 8 mm 5
22 Sept. Moderate rain
Moderate rain
 20° /11° 1.3 mm 5
23 Sept. Patchy rain possible
Patchy rain possible
 17° /11° 0.7 mm 4
24 Sept. Partly cloudy
Partly cloudy
 18° /10° 1.1 mm 4
25 Sept. Cloudy
Cloudy
 18° /11° 6.1 mm 4
26 Sept. Sunny
Sunny
 17° /10° 3.6 mm 4
27 Sept. Overcast
Overcast
 20° /11° 1.9 mm 4
28 Sept. Partly cloudy
Partly cloudy
 18° /11° 0.7 mm 4
29 Sept. Light rain shower
Light rain shower
 19° /12° 1.1 mm 4
30 Sept. Partly cloudy
Partly cloudy
 17° /9° 2.1 mm 4
Next
Important Notice
Our weather forecast for Regierungsbezirk Arnsberg in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Regierungsbezirk Arnsberg forecast closer to your planned date for the most up-to-date weather information.
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Regierungsbezirk Arnsberg weather in September vs August vs October

Compare September weather in Regierungsbezirk Arnsberg with the previous and following months. See how temperature, rainfall, wind, and other conditions change throughout the year to help you plan your visit.
AugustSeptemberOctober
WeatherPatchy rain possible
Patchy rain possible
Patchy rain possible
Patchy rain possible
Patchy rain possible
Patchy rain possible
Temperatures24°/15°21°/13°15°/9°
Rainfall86 mm83 mm92 mm
Wind14.5 km/h14.8 km/h16.6 km/h
Humidity63%65%76%
Rainy days13 days11 days14 days
Dry days18 days19 days17 days

Planning a trip to Regierungsbezirk Arnsberg? Discover the best time to visit

Regierungsbezirk Arnsberg in September - FAQ

What are the expected maximum and minimum temperatures in Regierungsbezirk Arnsberg during September?
Enjoy moderate daytime temperatures of up to 21° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in Regierungsbezirk Arnsberg during September?
Moderate rainfall is anticipated in Regierungsbezirk Arnsberg during September, with a total of 83.5 mm spread over approximately 11 days. Considering plans for rainy days is advisable.

What are the typical wind conditions in Regierungsbezirk Arnsberg during September?
The average wind speed in Regierungsbezirk Arnsberg during September is 15 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Regierungsbezirk Arnsberg

Explore the daily rainfall trends and prepare for Regierungsbezirk Arnsbergs September weather 💧
Typically, Regierungsbezirk Arnsberg has 11 rainy days in September with a total of 83.5 mm of rainfall.

UV exposure in Regierungsbezirk Arnsberg during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

What to pack to Regierungsbezirk Arnsberg in September?

🌦️ Mild & changeable · highs around 21 °C, frequent showers

As you prepare for your trip to Regierungsbezirk Arnsberg in September, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Regierungsbezirk Arnsberg, during September, is comfortable and enjoyable, regardless of the weather conditions.

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Location coordinates Where is Regierungsbezirk Arnsberg?

Get accurate weather forecasts for Regierungsbezirk Arnsberg, located at latitude 51.515 and longitude 7.466. Stay updated with localized weather information tailored for Regierungsbezirk Arnsberg.

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