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Weather in Frankfurt am Main for September 2025

Your guide to Frankfurt am Main weather in September - trends and predictions
  • In general, the average temperature in Frankfurt am Main at the beginning of September is 25.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 19.7 °C by the end of September.

  • Frankfurt am Main sees moderate rainfall in September, averaging 6 rainy days.

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

  • New! Chat with our AI weatherman - it’s amazing and free.
Average dry days
24
Dry days
Average rainy days
6
Rainy days
Average snowy days
0
Snow days
Average temperatures
24°/14°
Temperatures
Average wind speed
12 km/h
Avg max wind
Average humidity
62 %
Avg humidity

Frankfurt am Main in September average weather

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Temperatures trend during September in Frankfurt am Main

See the weather trend as well as the moving average line
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September weather day by day

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Date Weather Temperatures Rain UV More
1 Sept. Light rain shower
Light rain shower
24° /15° 7.6 mm 5
2 Sept. Fog
Fog
27° /16° 1.6 mm 6
3 Sept. Partly cloudy
Partly cloudy
26° /17° 1.3 mm 6
4 Sept. Sunny
Sunny
24° /15° 0.4 mm 6
5 Sept. Sunny
Sunny
28° /16° 1.2 mm 7
6 Sept. Sunny
Sunny
24° /15° 1.2 mm 6
7 Sept. Sunny
Sunny
28° /15° 0 mm 7
8 Sept. Sunny
Sunny
27° /16° 0.5 mm 7
9 Sept. Sunny
Sunny
25° /15° 4.8 mm 6
10 Sept. Sunny
Sunny
24° /15° 0.1 mm 6
11 Sept. Sunny
Sunny
23° /14° 2.7 mm 6
12 Sept. Thundery outbreaks possible
Thundery outbreaks possible
21° /12° 2.2 mm 5
13 Sept. Overcast
Overcast
18° /10° 0.1 mm 4
14 Sept. Cloudy
Cloudy
19° /11° 0 mm 5
15 Sept. Partly cloudy
Partly cloudy
22° /9° 0 mm 6
16 Sept. Partly cloudy
Partly cloudy
20° /12° 0.7 mm 5
17 Sept. Sunny
Sunny
24° /14° 0.1 mm 7
18 Sept. Patchy light drizzle
Patchy light drizzle
24° /15° 1.6 mm 6
19 Sept. Patchy rain possible
Patchy rain possible
23° /14° 0 mm 5
20 Sept. Partly cloudy
Partly cloudy
24° /13° 0 mm 7
21 Sept. Patchy rain possible
Patchy rain possible
24° /13° 2.7 mm 6
22 Sept. Thundery outbreaks possible
Thundery outbreaks possible
22° /12° 0.5 mm 5
23 Sept. Patchy rain possible
Patchy rain possible
19° /12° 2.3 mm 5
24 Sept. Sunny
Sunny
19° /11° 1.8 mm 5
25 Sept. Partly cloudy
Partly cloudy
20° /11° 2 mm 5
26 Sept. Sunny
Sunny
20° /12° 13.9 mm 5
27 Sept. Overcast
Overcast
21° /12° 0.1 mm 5
28 Sept. Partly cloudy
Partly cloudy
20° /12° 0.4 mm 5
29 Sept. Patchy rain possible
Patchy rain possible
20° /11° 0 mm 5
30 Sept. Sunny
Sunny
18° /10° 0.4 mm 5
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Important Notice
Our weather forecast for Frankfurt am Main 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 am Main forecast closer to your planned date for the most up-to-date weather information.

Guide for Frankfurt am Main in September

In September, Frankfurt am Main, Germany experiences a transition from late summer to early autumn, bringing about noticeable changes in the weather. At the beginning of the month, the city typically enjoys mild and pleasant conditions with average temperatures around 18° and occasional showers.

As the month progresses, the weather gradually cools down, and by the end of September, temperatures tend to drop to around 14° with an increase in rainfall. The city experiences an average of 13 rainy days during the month, making it important for visitors to be prepared for wet weather.

Additionally, September marks the onset of autumn in Frankfurt, so travelers can expect to witness the beautiful transformation of the city's foliage.

The weather in Frankfurt during this time of year is generally comfortable for outdoor activities, such as exploring the city's historic sites, strolling along the Main River, or visiting the numerous parks and gardens.

Overall, September in Frankfurt offers a mix of late summer warmth and early autumn coolness, making it an ideal time to experience the city's charm while enjoying the changing weather patterns.

Frankfurt am Main in September - FAQ

Is September a good time to visit Frankfurt am Main?
Yes, September is a good time to traveling to Frankfurt am Main, read more about the best time to visit Frankfurt am Main.
What are the expected maximum and minimum temperatures in Frankfurt am Main during September?
Enjoy moderate daytime temperatures of up to 24° and cooler nights around 14°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Frankfurt am Main during September?
In September, Frankfurt am Main can expect light to moderate rainfall, totaling 27.7 mm across approximately 6 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Frankfurt am Main during September?
The average wind speed in Frankfurt am Main during September is 12 km/h, suggesting breezy to windy conditions, depending on your activities.

What to pack to Frankfurt am Main in September?

As you prepare for your trip to Frankfurt am Main 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 am Main, during September, is comfortable and enjoyable, regardless of the weather conditions.

  • Clothing
    • Warm Clothing: Sweaters, hoodies, long pants
    • Rain Gear: Lightweight, waterproof clothing
  • 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

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Location coordinates Where is Frankfurt am Main?

Get accurate weather forecasts for Frankfurt am Main, located at latitude 50.116 and longitude 8.684. Stay updated with localized weather information tailored for Frankfurt am Main.

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