Weser-Romantische Straße Teil 7: which way and when to ride
The best month for Weser-Romantische Straße Teil 7 is September: 77% of days were dry with highs of 10–30 °C. In September the wind barely favours either direction — on average 0.3 km/h along the route (ERA5 2006–2025, daytime 9:00–18:00).
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% | 68 | 3 °C | 0% | 93% | 8.6 † |
| February | 13% | 24% | 55 | 5 °C | 0% | 83% | 10.0 † |
| March | 39% | 24% | 58 | 10 °C | 0% | 54% | 11.7 |
| April | 65% | 24% | 51 | 15 °C | 0% | 21% | 13.7 |
| May | 69% | 29% | 82 | 18 °C | 0% | 4% | 15.3 |
| June | 68% | 26% | 71 | 23 °C | 6% | 0% | 16.3 |
| July | 62% | 27% | 72 | 24 °C | 12% | 0% | 15.9 |
| August | 66% | 24% | 71 | 24 °C | 11% | 0% | 14.4 |
| September | 77% | 22% | 59 | 19 °C | 1% | 0% | 12.5 |
| October | 66% | 20% | 61 | 14 °C | 0% | 18% | 10.7 † |
| November | 23% | 23% | 63 | 8 °C | 0% | 70% | 9.0 † |
| December | 5% | 27% | 75 | 5 °C | 0% | 91% | 8.2 † |
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 Würzburg → Rothenburg, km/h | Headwind > 15 km/h, Würzburg → Rothenburg | Headwind > 15 km/h, Rothenburg → Würzburg | Better way |
|---|---|---|---|---|
| January | −0.8 | 9% | 6% | either |
| February | −0.8 | 8% | 6% | either |
| March | +0.2 | 8% | 7% | either |
| April | +0.8 | 4% | 5% | either |
| May | +1.1 | 4% | 5% | either |
| June | +1.2 | 3% | 4% | either |
| July | +1.0 | 4% | 4% | either |
| August | +0.4 | 3% | 2% | either |
| September | +0.3 | 4% | 3% | either |
| October | −0.8 | 5% | 4% | either |
| November | −1.3 | 6% | 4% | either |
| December | −1.4 | 8% | 4% | either |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in September, km/h |
|---|---|---|
| 0–25 | W | −2.3 |
| 25–50 | SW | −1.9 |
| 50–75 | SE | +1.0 |
| 75–100 | SE | +1.5 |
| 100–126 | E | +2.5 |
| 126–138 | SE | +1.4 |
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.