Weather in Frankfurt am Main for September 2025
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 18.6 °C by the end of September.
Frankfurt am Main in September brings notable rainfall, with an average of 18 rainy days and a total precipitation of 65.1 mm.
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Frankfurt am Main in September average weather
| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  24° | 2  26° | 3 25° | 4 25° | 5 28° | 6  26° | 7 27° |
| 8 26° | 9 24° | 10 23° | 11 23° | 12  23° | 13 20° | 14 20° |
| 15  22° | 16 19° | 17 21° | 18 21° | 19 20° | 20  20° | 21 21° |
| 22 20° | 23 20° | 24 18° | 25 20° | 26 20° | 27 19° | 28 18° |
| 29 18° | 30 17° |
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Temperatures trend during September in Frankfurt am Main
September weather day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Patchy rain possible | 24° /14° | 3.9 mm | 6 | |
| 2 Sept. | Sunny | 26° /14° | 0.8 mm | 6 | |
| 3 Sept. | Sunny | 25° /15° | 1.8 mm | 6 | |
| 4 Sept. | Patchy rain possible | 25° /14° | 0.2 mm | 6 | |
| 5 Sept. | Sunny | 28° /15° | 0.6 mm | 7 | |
| 6 Sept. | Partly cloudy | 26° /15° | 0.8 mm | 7 | |
| 7 Sept. | Sunny | 27° /15° | 0.5 mm | 7 | |
| 8 Sept. | Sunny | 26° /15° | 3.3 mm | 6 | |
| 9 Sept. | Patchy rain possible | 24° /15° | 4 mm | 6 | |
| 10 Sept. | Patchy rain possible | 23° /14° | 4.1 mm | 5 | |
| 11 Sept. | Patchy rain possible | 23° /14° | 2.3 mm | 6 | |
| 12 Sept. | Cloudy | 23° /13° | 1.1 mm | 5 | |
| 13 Sept. | Sunny | 20° /12° | 1.1 mm | 5 | |
| 14 Sept. | Patchy rain possible | 20° /12° | 9.8 mm | 5 | |
| 15 Sept. | Moderate or heavy rain shower | 22° /12° | 5.9 mm | 5 | |
| 16 Sept. | Patchy rain possible | 19° /12° | 0.8 mm | 5 | |
| 17 Sept. | Cloudy | 21° /12° | 0.2 mm | 5 | |
| 18 Sept. | Patchy rain possible | 21° /12° | 3.8 mm | 5 | |
| 19 Sept. | Patchy rain possible | 20° /12° | 0.2 mm | 5 | |
| 20 Sept. | Overcast | 20° /11° | 0.1 mm | 5 | |
| 21 Sept. | Sunny | 21° /11° | 1.3 mm | 5 | |
| 22 Sept. | Partly cloudy | 20° /10° | 0.2 mm | 5 | |
| 23 Sept. | Partly cloudy | 20° /10° | 1.2 mm | 5 | |
| 24 Sept. | Cloudy | 18° /11° | 1.3 mm | 5 | |
| 25 Sept. | Cloudy | 20° /11° | 2.4 mm | 5 | |
| 26 Sept. | Moderate rain at times | 20° /11° | 8.9 mm | 5 | |
| 27 Sept. | Overcast | 19° /11° | 2 mm | 4 | |
| 28 Sept. | Overcast | 18° /11° | 1.7 mm | 4 | |
| 29 Sept. | Patchy rain possible | 18° /9° | 0.8 mm | 4 | |
| 30 Sept. | Partly cloudy | 17° /8° | 0.2 mm | 4 | |
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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.
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Frankfurt am Main in September - FAQ
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
- 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 am Main
UV exposure in Frankfurt am Main during September
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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.