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Regierungsbezirk Arnsberg (Dortmund)
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Weather in Regierungsbezirk Arnsberg for September 2025

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

    Temperatures

  • Until now, September 2025 in Regierungsbezirk Arnsberg is cooler than usual, with temperatures averaging 20.7 °C, this is -2.4 °C below the typical seasonal average.

  • The forecast for the next days in Regierungsbezirk Arnsberg predicts temperatures to be around 18 °C, close to the historical average.

  • In general, the average temperature in Regierungsbezirk Arnsberg at the beginning of September is 25.7 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 14.4 °C by the end of September.

    • Rain 🌧️

  • Regierungsbezirk Arnsberg experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 98.3 mm.

    • 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
9
Dry days
Average rainy days
21
Rainy days
Average snowy days
0
Snow days
Average temperatures
22°/14°
Temperatures
Average wind speed
14 km/h
Avg max wind
Average humidity
65 %
Avg humidity

Regierungsbezirk Arnsberg Weather September

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

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. Heavy rain
Heavy rain
 23° /14° 23.5 mm 5
2 Sept. Light rain shower
Light rain shower
 25° /16° 2.7 mm 6
3 Sept. Patchy rain possible
Patchy rain possible
 25° /16° 1 mm 5
4 Sept. Light rain shower
Light rain shower
 23° /15° 9.1 mm 5
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. Cloudy
Cloudy
 23° /15° 0 mm 0.8
19 Sept. Partly cloudy
Partly cloudy
 28° /15° 0 mm 1
20 Sept. Sunny
Sunny
 30° /17° 0 mm 0.9
21 Sept. Patchy rain possible
Patchy rain possible
 22° /16° 4.5 mm 0.4
22 Sept. Moderate rain
Moderate rain
 15° /13° 19.5 mm 0.2
23 Sept. Patchy rain possible
Patchy rain possible
 12° /10° 3.7 mm 3
24 Sept. Patchy rain possible
Patchy rain possible
 16° /8° 0.6 mm 3
25 Sept. Patchy rain possible
Patchy rain possible
 14° /8° 0.1 mm 3
26 Sept. Partly cloudy
Partly cloudy
 16° /9° 0 mm 4
27 Sept. Patchy rain possible
Patchy rain possible
 15° /9° 0.2 mm 3
28 Sept. Patchy rain possible
Patchy rain possible
 13° /10° 2.3 mm 3
29 Sept. Patchy rain possible
Patchy rain possible
 12° /9° 3 mm 3
30 Sept. Patchy rain possible
Patchy rain possible
 15° /8° 0.3 mm 3
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°22°/14°16°/10°
Rainfall119 mm98 mm98 mm
Wind14.7 km/h14.2 km/h16.4 km/h
Humidity67%65%76%
Rainy days22 days21 days24 days
Dry days9 days9 days7 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 22° and cooler nights around 14°. 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 98.3 mm spread over approximately 21 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 14 km/h, suggesting breezy to windy conditions, depending on your activities.

What to pack to Regierungsbezirk Arnsberg in September?

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.

  • Clothing
    • Warm Clothing: Sweaters, hoodies, long pants
    • Rain Gear: Lightweight, waterproof clothing
  • Footwear
    • Waterproof Shoes
  • Accessories
    • Sunglasses: For sun protection
    • Sun Hats: Wide-brimmed hats for sun protection in warm weather
    • Scarves: To protect you from the cold wind
    • Gloves/Mittens: Essential for cold weather
    • Warm Hats: Warm hats for insulation in cold weather
    • Umbrellas/Raincoats: For rainy days

September rainfall patterns in Regierungsbezirk Arnsberg

Explore the daily rainfall trends and prepare for Regierungsbezirk Arnsbergs September weather 💧

UV exposure in Regierungsbezirk Arnsberg during September

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