Radweg Deutsche Einheit, stage 9: Bad Belzig → Berlin
On stage 9 (Bad Belzig → Berlin, 100 km) the best month is September: 81% of days were dry with highs of 10–30 °C, and riding Bad Belzig → Berlin meant an average tailwind of 3.2 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 | 5% | 25% | 56 | 3 °C | 0% | 92% | 8.2 † |
| February | 12% | 17% | 39 | 5 °C | 0% | 84% | 9.8 † |
| March | 35% | 23% | 43 | 9 °C | 0% | 58% | 11.7 |
| April | 69% | 18% | 33 | 15 °C | 0% | 19% | 13.8 |
| May | 78% | 20% | 52 | 19 °C | 1% | 2% | 15.7 |
| June | 71% | 22% | 57 | 23 °C | 8% | 0% | 16.8 |
| July | 63% | 24% | 83 | 25 °C | 14% | 0% | 16.3 |
| August | 69% | 21% | 59 | 24 °C | 12% | 0% | 14.7 |
| September | 81% | 17% | 47 | 20 °C | 2% | 0% | 12.6 |
| October | 70% | 20% | 52 | 14 °C | 0% | 14% | 10.5 † |
| November | 29% | 17% | 47 | 8 °C | 0% | 64% | 8.7 † |
| December | 7% | 20% | 50 | 5 °C | 0% | 89% | 7.7 † |
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 Bad Belzig → Berlin, km/h | Headwind > 15 km/h, Bad Belzig → Berlin | Headwind > 15 km/h, Berlin → Bad Belzig | Better way |
|---|---|---|---|---|
| January | +6.6 | 2% | 24% | Bad Belzig → Berlin |
| February | +4.8 | 3% | 18% | Bad Belzig → Berlin |
| March | +3.3 | 4% | 14% | Bad Belzig → Berlin |
| April | +1.2 | 5% | 10% | either |
| May | +1.2 | 5% | 10% | either |
| June | +2.8 | 2% | 10% | Bad Belzig → Berlin |
| July | +4.5 | 1% | 11% | Bad Belzig → Berlin |
| August | +4.2 | 1% | 10% | Bad Belzig → Berlin |
| September | +3.2 | 3% | 11% | Bad Belzig → Berlin |
| October | +4.8 | 2% | 15% | Bad Belzig → Berlin |
| November | +5.8 | 1% | 18% | Bad Belzig → Berlin |
| December | +7.5 | 1% | 24% | Bad Belzig → Berlin |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in September, km/h |
|---|---|---|
| 988–1,013 | NE | +3.5 |
| 1,013–1,038 | NE | +2.6 |
| 1,038–1,064 | NE | +3.5 |
| 1,064–1,087 | NE | +3.3 |
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.