Radweg Deutsche Einheit, stage 4: Bad Hersfeld → Hannoversch Münden
On stage 4 (Bad Hersfeld → Hannoversch Münden, 116 km) the best month is September: 78% of days were dry with highs of 10–30 °C; the wind barely favours either direction (1.7 km/h on average; 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 | 3% | 25% | 64 | 3 °C | 0% | 94% | 8.4 † |
| February | 8% | 25% | 52 | 5 °C | 0% | 89% | 9.9 † |
| March | 31% | 27% | 51 | 9 °C | 0% | 63% | 11.7 |
| April | 60% | 23% | 47 | 14 °C | 0% | 26% | 13.8 |
| May | 69% | 29% | 69 | 17 °C | 0% | 5% | 15.5 |
| June | 71% | 27% | 67 | 21 °C | 3% | 0% | 16.5 |
| July | 63% | 29% | 76 | 23 °C | 8% | 0% | 16.1 |
| August | 69% | 26% | 72 | 23 °C | 6% | 0% | 14.6 |
| September | 78% | 22% | 56 | 19 °C | 0% | 0% | 12.5 |
| October | 63% | 22% | 58 | 13 °C | 0% | 21% | 10.6 † |
| November | 22% | 23% | 54 | 8 °C | 0% | 73% | 8.8 † |
| December | 4% | 26% | 61 | 4 °C | 0% | 93% | 7.9 † |
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 Hersfeld → Hannoversch Münden, km/h | Headwind > 15 km/h, Bad Hersfeld → Hannoversch Münden | Headwind > 15 km/h, Hannoversch Münden → Bad Hersfeld | Better way |
|---|---|---|---|---|
| January | +4.1 | 2% | 13% | Bad Hersfeld → Hannoversch Münden |
| February | +3.7 | 2% | 11% | Bad Hersfeld → Hannoversch Münden |
| March | +1.3 | 4% | 8% | either |
| April | −0.2 | 4% | 5% | either |
| May | −0.4 | 4% | 4% | either |
| June | −0.1 | 3% | 4% | either |
| July | +0.7 | 1% | 4% | either |
| August | +1.8 | 1% | 4% | either |
| September | +1.7 | 2% | 5% | either |
| October | +4.1 | 2% | 9% | Bad Hersfeld → Hannoversch Münden |
| November | +5.1 | 1% | 12% | Bad Hersfeld → Hannoversch Münden |
| December | +5.4 | 1% | 14% | Bad Hersfeld → Hannoversch Münden |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in September, km/h |
|---|---|---|
| 376–401 | N | +1.1 |
| 401–427 | NW | −0.3 |
| 427–452 | N | +1.0 |
| 452–477 | NE | +3.5 |
| 477–492 | NE | +4.0 |
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.