Weser-Romantische Straße Teil 6: which way and when to ride
The best month for Weser-Romantische Straße Teil 6 is September: 76% of days were dry with highs of 10–30 °C. In September the wind barely favours either direction — on average 0.8 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 | 4% | 27% | 78 | 3 °C | 0% | 95% | 8.5 † |
| February | 9% | 26% | 61 | 5 °C | 0% | 88% | 10.0 † |
| March | 34% | 28% | 64 | 9 °C | 0% | 58% | 11.7 |
| April | 62% | 25% | 55 | 14 °C | 0% | 22% | 13.7 |
| May | 67% | 31% | 80 | 18 °C | 0% | 4% | 15.4 |
| June | 67% | 30% | 74 | 22 °C | 4% | 0% | 16.4 |
| July | 63% | 28% | 77 | 24 °C | 10% | 0% | 16.0 |
| August | 67% | 25% | 77 | 23 °C | 8% | 0% | 14.5 |
| September | 76% | 24% | 62 | 19 °C | 1% | 1% | 12.5 |
| October | 62% | 22% | 65 | 13 °C | 0% | 22% | 10.6 † |
| November | 19% | 26% | 66 | 7 °C | 0% | 74% | 8.9 † |
| December | 3% | 28% | 82 | 4 °C | 0% | 93% | 8.1 † |
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 Motten → Würzburg, km/h | Headwind > 15 km/h, Motten → Würzburg | Headwind > 15 km/h, Würzburg → Motten | Better way |
|---|---|---|---|---|
| January | −2.4 | 7% | 2% | Würzburg → Motten |
| February | −2.2 | 6% | 2% | Würzburg → Motten |
| March | −0.7 | 5% | 3% | either |
| April | +0.4 | 3% | 3% | either |
| May | +0.5 | 2% | 3% | either |
| June | +0.5 | 2% | 2% | either |
| July | −0.3 | 2% | 1% | either |
| August | −1.2 | 2% | 1% | either |
| September | −0.8 | 2% | 2% | either |
| October | −2.5 | 4% | 2% | Würzburg → Motten |
| November | −3.2 | 5% | 1% | Würzburg → Motten |
| December | −3.4 | 7% | 1% | Würzburg → Motten |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in September, km/h |
|---|---|---|
| 0–25 | SW | −2.4 |
| 25–50 | S | −1.6 |
| 50–75 | SE | +0.1 |
| 75–100 | SE | 0.0 |
| 100–105 | E | +2.0 |
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.