Weser Cycle Route, stage 3: Nienburg → Bremen
On stage 3 (Nienburg → Bremen, 116 km) the best month is September: 81% of days were dry with highs of 10–30 °C; the wind barely favours either direction (0.5 km/h on average; ERA5 2006–2025, 9:00–18:00).
← Weser Cycle Route (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% | 27% | 69 | 4 °C | 0% | 89% | 8.1 † |
| February | 11% | 24% | 55 | 6 °C | 0% | 84% | 9.8 † |
| March | 36% | 24% | 51 | 9 °C | 0% | 56% | 11.7 |
| April | 65% | 24% | 46 | 14 °C | 0% | 20% | 13.9 |
| May | 73% | 26% | 62 | 18 °C | 0% | 2% | 15.8 |
| June | 72% | 25% | 71 | 22 °C | 2% | 0% | 16.9 |
| July | 63% | 28% | 79 | 23 °C | 9% | 0% | 16.4 |
| August | 65% | 29% | 74 | 23 °C | 7% | 0% | 14.7 |
| September | 81% | 18% | 52 | 19 °C | 1% | 0% | 12.6 |
| October | 69% | 23% | 69 | 14 °C | 0% | 11% | 10.5 † |
| November | 28% | 23% | 60 | 9 °C | 0% | 61% | 8.6 † |
| December | 10% | 25% | 66 | 6 °C | 0% | 85% | 7.6 † |
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 Nienburg → Bremen, km/h | Headwind > 15 km/h, Nienburg → Bremen | Headwind > 15 km/h, Bremen → Nienburg | Better way |
|---|---|---|---|---|
| January | +1.6 | 7% | 8% | either |
| February | +1.8 | 6% | 8% | either |
| March | −0.1 | 8% | 6% | either |
| April | −1.1 | 7% | 4% | either |
| May | −1.4 | 7% | 4% | either |
| June | −2.0 | 7% | 2% | either |
| July | −1.7 | 6% | 2% | either |
| August | −0.1 | 5% | 2% | either |
| September | +0.5 | 5% | 4% | either |
| October | +2.4 | 5% | 7% | Nienburg → Bremen |
| November | +2.9 | 4% | 7% | Nienburg → Bremen |
| December | +2.5 | 5% | 9% | Nienburg → Bremen |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in September, km/h |
|---|---|---|
| 260–285 | N | +2.6 |
| 285–310 | N | +2.3 |
| 310–335 | N | +1.7 |
| 335–361 | W | −3.6 |
| 361–376 | NW | −0.9 |
Other stages
- Hann. Münden → Hameln 132 km
- Hameln → Nienburg 128 km
- Nienburg → Bremen 116 km
- Bremen → Cuxhaven 135 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.