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Germany weather

Weather in Frankfurt for September 2025

Your guide to Frankfurt weather in September - trends and predictions

    Temperatures

  • Until now, September 2025 in Frankfurt is cooler than usual, with temperatures averaging 21.2 °C, this is -2.2 °C below the typical seasonal average.

  • The forecast for the next days in Frankfurt predicts temperatures to be around 23 °C, close to the historical average.

  • In general, the average temperature in Frankfurt at the beginning of September is 24.6 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 20.1 °C by the end of September.

    • Rain 🌧️

  • Frankfurt in September brings notable rainfall, with an average of 16 rainy days and a total precipitation of 61.3 mm.

    • More

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

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

Average dry days
14
Dry days
Average rainy days
16
Rainy days
Average snowy days
0
Snow days
Average temperatures
22°/12°
Temperatures
Average wind speed
13 km/h
Avg max wind
Average humidity
71 %
Avg humidity

Frankfurt Weather September

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

Temperatures trend during September in Frankfurt

See the weather trend as well as the moving average line

September weather in Frankfurt day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Light rain shower
Light rain shower
 24° /13° 2.1 mm 5
2 Sept. Partly cloudy
Partly cloudy
 24° /13° 2.5 mm 6
3 Sept. Patchy rain possible
Patchy rain possible
 25° /13° 1.3 mm 6
4 Sept. Sunny
Sunny
 24° /14° 3.8 mm 6
5 Sept. Sunny
Sunny
 25° /14° 5 mm 6
6 Sept. Sunny
Sunny
 24° /12° 0.4 mm 6
7 Sept. Sunny
Sunny
 26° /12° 0 mm 6
8 Sept. Sunny
Sunny
 26° /12° 2.3 mm 6
9 Sept. Sunny
Sunny
 22° /12° 5.3 mm 5
10 Sept. Sunny
Sunny
 22° /13° 1.1 mm 5
11 Sept. Light rain shower
Light rain shower
 21° /11° 1.7 mm 5
12 Sept. Sunny
Sunny
 21° /10° 0.5 mm 5
13 Sept. Overcast
Overcast
 20° /9° 0.4 mm 5
14 Sept. Mist
Mist
 19° /9° 4.8 mm 4
15 Sept. Patchy rain possible
Patchy rain possible
 21° /13° 4.2 mm 0.9
16 Sept. Patchy rain possible
Patchy rain possible
 17° /11° 0.1 mm 0.9
17 Sept. Patchy rain possible
Patchy rain possible
 17° /9° 0.4 mm 0.9
18 Sept. Sunny
Sunny
 24° /9° 0 mm 1.2
19 Sept. Sunny
Sunny
 27° /12° 0 mm 1.3
20 Sept. Sunny
Sunny
 28° /14° 0 mm 5
21 Sept. Patchy rain possible
Patchy rain possible
 27° /16° 0.7 mm 5
22 Sept. Partly cloudy
Partly cloudy
 26° /15° 0 mm 5
23 Sept. Patchy rain possible
Patchy rain possible
 26° /14° 1.3 mm 4
24 Sept. Patchy rain possible
Patchy rain possible
 21° /12° 0.6 mm 4
25 Sept. Patchy rain possible
Patchy rain possible
 23° /12° 0.5 mm 4
26 Sept. Patchy rain possible
Patchy rain possible
 21° /13° 0.4 mm 4
27 Sept. Partly cloudy
Partly cloudy
 22° /12° 0 mm 5
28 Sept. Patchy rain possible
Patchy rain possible
 18° /11° 1.7 mm 3
29 Sept. Partly cloudy
Partly cloudy
 19° /8° 0.3 mm 5
30 Sept. Light drizzle
Light drizzle
 17° /8° 0.6 mm 4
Next
Important Notice
Our weather forecast for Frankfurt 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 Frankfurt forecast closer to your planned date for the most up-to-date weather information.
Change Month
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Frankfurt weather in September vs August vs October

Compare September weather in Frankfurt 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
Temperatures25°/15°22°/12°16°/8°
Rainfall116 mm61 mm43 mm
Wind11.5 km/h13.3 km/h14.1 km/h
Humidity71%71%76%
Rainy days17 days16 days16 days
Dry days14 days14 days15 days

Planning a trip to Frankfurt? Discover the best time to visit

Frankfurt in September - FAQ

What are the expected maximum and minimum temperatures in Frankfurt during September?
Enjoy moderate daytime temperatures of up to 22° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Frankfurt during September?
Moderate rainfall is anticipated in Frankfurt during September, with a total of 61.3 mm spread over approximately 16 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Frankfurt during September?
The average wind speed in Frankfurt during September is 13 km/h, suggesting breezy to windy conditions, depending on your activities.

What to pack to Frankfurt in September?

As you prepare for your trip to Frankfurt 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 Frankfurt, 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 Frankfurt

Explore the daily rainfall trends and prepare for Frankfurts September weather 💧

UV exposure in Frankfurt during September

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

Quick links

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Location coordinates Where is Frankfurt?

Get accurate weather forecasts for Frankfurt, located at latitude 49.683 and longitude 10.533. Stay updated with localized weather information tailored for Frankfurt.

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