Radweg Deutsche Einheit, stage 7: Blankenburg → Köthen
On stage 7 (Blankenburg → Köthen, 130 km) the best month is September: 81% of days were dry with highs of 10–30 °C, and riding Blankenburg → Köthen meant an average tailwind of 3.5 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% | 20% | 48 | 3 °C | 0% | 91% | 8.3 † |
| February | 12% | 20% | 39 | 5 °C | 0% | 84% | 9.9 † |
| March | 35% | 21% | 40 | 9 °C | 0% | 58% | 11.7 |
| April | 66% | 19% | 35 | 14 °C | 0% | 23% | 13.8 |
| May | 75% | 23% | 64 | 18 °C | 0% | 3% | 15.6 |
| June | 74% | 23% | 59 | 22 °C | 4% | 0% | 16.7 |
| July | 64% | 25% | 71 | 24 °C | 12% | 0% | 16.2 |
| August | 69% | 23% | 65 | 24 °C | 9% | 0% | 14.6 |
| September | 81% | 17% | 53 | 20 °C | 2% | 0% | 12.6 |
| October | 69% | 19% | 50 | 14 °C | 0% | 16% | 10.5 † |
| November | 28% | 18% | 45 | 8 °C | 0% | 67% | 8.7 † |
| December | 8% | 19% | 48 | 5 °C | 0% | 89% | 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 Blankenburg → Köthen, km/h | Headwind > 15 km/h, Blankenburg → Köthen | Headwind > 15 km/h, Köthen → Blankenburg | Better way |
|---|---|---|---|---|
| January | +6.2 | 1% | 21% | Blankenburg → Köthen |
| February | +4.6 | 2% | 18% | Blankenburg → Köthen |
| March | +3.9 | 4% | 17% | Blankenburg → Köthen |
| April | +2.2 | 3% | 12% | Blankenburg → Köthen |
| May | +2.2 | 4% | 12% | Blankenburg → Köthen |
| June | +4.0 | 1% | 12% | Blankenburg → Köthen |
| July | +5.6 | 0% | 15% | Blankenburg → Köthen |
| August | +4.3 | 1% | 11% | Blankenburg → Köthen |
| September | +3.5 | 2% | 11% | Blankenburg → Köthen |
| October | +4.1 | 2% | 14% | Blankenburg → Köthen |
| November | +4.7 | 1% | 15% | Blankenburg → Köthen |
| December | +6.2 | 1% | 18% | Blankenburg → Köthen |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in September, km/h |
|---|---|---|
| 734–759 | SE | +3.7 |
| 759–784 | NE | +3.5 |
| 784–810 | NE | +4.0 |
| 810–835 | SE | +3.1 |
| 835–861 | E | +3.4 |
| 861–864 | SE | +2.7 |
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.