Radweg Deutsche Einheit, stage 8: Köthen → Bad Belzig
On stage 8 (Köthen → Bad Belzig, 124 km) the best month is September: 82% of days were dry with highs of 10–30 °C, and riding Köthen → Bad Belzig meant an average tailwind of 2.5 km/h (ERA5 2006–2025, 9:00–18:00).
← Radweg Deutsche Einheit (Whole route)
Weather by month
| Month | Good days | Rain days ≥ 1 mm | Rain, mm | Avg high | Days ≥ 30 °C | Days < 10 °C | Daylight, h |
|---|---|---|---|---|---|---|---|
| January | 6% | 23% | 54 | 4 °C | 0% | 91% | 8.3 † |
| February | 14% | 20% | 40 | 5 °C | 0% | 82% | 9.9 † |
| March | 37% | 22% | 42 | 9 °C | 0% | 56% | 11.7 |
| April | 69% | 17% | 33 | 15 °C | 0% | 20% | 13.8 |
| May | 78% | 21% | 58 | 19 °C | 1% | 2% | 15.6 |
| June | 73% | 21% | 53 | 23 °C | 7% | 0% | 16.7 |
| July | 63% | 24% | 75 | 25 °C | 14% | 0% | 16.2 |
| August | 69% | 21% | 63 | 24 °C | 11% | 0% | 14.6 |
| September | 82% | 16% | 48 | 20 °C | 2% | 0% | 12.6 |
| October | 72% | 19% | 50 | 14 °C | 0% | 13% | 10.5 † |
| November | 31% | 18% | 48 | 8 °C | 0% | 63% | 8.7 † |
| December | 8% | 22% | 52 | 5 °C | 0% | 87% | 7.8 † |
Best months are all months within 3 percentage points of the best one. † less than 11 hours of daylight — long stages get tight.
Wind by month
| Month | Wind Köthen → Bad Belzig, km/h | Headwind > 15 km/h, Köthen → Bad Belzig | Headwind > 15 km/h, Bad Belzig → Köthen | Better way |
|---|---|---|---|---|
| January | +5.3 | 2% | 18% | Köthen → Bad Belzig |
| February | +3.9 | 3% | 14% | Köthen → Bad Belzig |
| March | +2.6 | 4% | 12% | Köthen → Bad Belzig |
| April | +0.9 | 4% | 8% | either |
| May | +1.1 | 4% | 8% | either |
| June | +2.3 | 2% | 8% | Köthen → Bad Belzig |
| July | +3.6 | 1% | 10% | Köthen → Bad Belzig |
| August | +3.2 | 1% | 8% | Köthen → Bad Belzig |
| September | +2.5 | 2% | 8% | Köthen → Bad Belzig |
| October | +3.8 | 2% | 11% | Köthen → Bad Belzig |
| November | +4.6 | 1% | 12% | Köthen → Bad Belzig |
| December | +5.8 | 1% | 17% | Köthen → Bad Belzig |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in September, km/h |
|---|---|---|
| 864–890 | NE | +3.6 |
| 890–916 | SE | +2.9 |
| 916–941 | E | +3.8 |
| 941–966 | N | +1.9 |
| 966–988 | N | +0.1 |
Other stages
- Bonn → Limburg an der Lahn 136 km
- Limburg an der Lahn → Marburg an der Lahn 120 km
- Marburg an der Lahn → Bad Hersfeld 121 km
- Bad Hersfeld → Hannoversch Münden 116 km
- Hannoversch Münden → Einbeck 122 km
- Einbeck → Blankenburg 120 km
- Blankenburg → Köthen 130 km
- Köthen → Bad Belzig 124 km
- Bad Belzig → Berlin 100 km
How to read the numbers
Wind is the 10 m wind of a 25-km grid cell, daytime hours 9:00–18:00 local solar time; at saddle height in a sheltered valley it is weaker, on a coast or ridge stronger. A positive value is a tailwind. ERA5 slightly over-counts days with ≥ 1 mm of rain (by about 5–7 percentage points) and underestimates daily highs by 1–2 °C. Good day = less than 1 mm of rain between 9:00 and 18:00 (riding hours, local solar time) and a high between 10 and 30 °C; rain at night or in the evening does not spoil it.