Weather in Koblenz for September 2026
Until now, September 2026 in Koblenz is slightly cooler than the historical average by 0.7 °C.
Expect cooler weather in the next days in Koblenz with the forecast suggesting a temperature of 19.9 °C, lower than the historical average.
In general, the average temperature in Koblenz at the beginning of September is 24.7 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 19.3 °C by the end of September.
Koblenz in September brings notable rainfall, with an average of 18 rainy days and a total precipitation of 84.5 mm.
Is September a good time to visit Koblenz? check out the best time to travel to Koblenz page.
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Koblenz Weather September
Temperatures trend during September in Koblenz
September weather in Koblenz day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Mist | 23° /11° | 2.2 mm | 5 | |
| 2 Sept. | Fog | 25° /11° | 1.8 mm | 5 | |
| 3 Sept. | Mist | 24° /13° | 1.6 mm | 4 | |
| 4 Sept. |  Partly cloudy | 24° /13° | 3.4 mm | 5 | |
| 5 Sept. |  Sunny | 25° /12° | 0.6 mm | 6 | |
| 6 Sept. | Sunny | 24° /10° | 0.1 mm | 5 | |
| 7 Sept. | Sunny | 28° /11° | 0.1 mm | 5 | |
| 8 Sept. | Sunny | 25° /12° | 0.9 mm | 5 | |
| 9 Sept. |  Light rain shower | 22° /12° | 12.5 mm | 5 | |
| 10 Sept. | Sunny | 22° /10° | 0.6 mm | 5 | |
| 11 Sept. |  Overcast | 21° /10° | 0.1 mm | 4.1 | |
| 12 Sept. | Overcast | 23° /12° | 0 mm | 4.4 | |
| 13 Sept. | Overcast | 18° /14° | 6.6 mm | 1.4 | |
| 14 Sept. | Mist | 22° /14° | 0.3 mm | 4.4 | |
| 15 Sept. | Sunny | 25° /13° | 0 mm | 6 | |
| 16 Sept. | Sunny | 18° /12° | 1.1 mm | 5 | |
| 17 Sept. | Sunny | 19° /10° | 0.3 mm | 5 | |
| 18 Sept. | Overcast | 19° /11° | 0 mm | 5 | |
| 19 Sept. | Overcast | 18° /13° | 0.1 mm | 5 | |
| 20 Sept. | Sunny | 19° /9° | 0 mm | 5 | |
| 21 Sept. | Patchy rain possible | 16° /11° | 0.5 mm | 3 | |
| 22 Sept. | Patchy rain possible | 14° /9° | 1.2 mm | 3 | |
| 23 Sept. | Overcast | 20° /9° | 0 mm | 4 | |
| 24 Sept. | Sunny | 26° /13° | 0 mm | 7 | |
| 25 Sept. |  Light rain | 16° /8° | 3.4 mm | 4 | |
| 26 Sept. | Sunny | 18° /8° | 6.9 mm | 4 | |
| 27 Sept. | Patchy rain possible | 19° /8° | 1.1 mm | 4 | |
| 28 Sept. | Partly cloudy | 20° /6° | 0.8 mm | 5 | |
| 29 Sept. | Patchy rain possible | 19° /9° | 0.2 mm | 4 | |
| 30 Sept. | Mist | 17° /6° | 1.1 mm | 4 | |
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Koblenz weather in September vs August vs October
| August | September | October | |
|---|---|---|---|
| Weather | Patchy rain possible | Patchy rain possible | Patchy rain possible |
| Temperatures | 25°/12° | 21°/10° | 15°/6° |
| Rainfall | 89 mm | 85 mm | 86 mm |
| Wind | 12.2 km/h | 13.5 km/h | 14.2 km/h |
| Humidity | 70% | 74% | 81% |
| Rainy days | 21 days | 18 days | 21 days |
| Dry days | 10 days | 12 days | 10 days |
Planning a trip to Koblenz? Discover the best time to visit
Koblenz in September - FAQ
What are the expected maximum and minimum temperatures in Koblenz during September?
How much rainfall should be expected in Koblenz during September?
What are the typical wind conditions in Koblenz during September?
September rainfall patterns in Koblenz
UV exposure in Koblenz during September
What to pack to Koblenz in September?
Mild & changeable · highs around 21 °C, frequent showers
As you prepare for your trip to Koblenz 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 Koblenz, during September, is comfortable and enjoyable, regardless of the weather conditions.
🧥 Clothing
👟 Footwear
🎒 Accessories
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Where is Koblenz?Get accurate weather forecasts for Koblenz, located at latitude 50.354 and longitude 7.579. Stay updated with localized weather information tailored for Koblenz.