Pilgerroute, stage 9: Rendsburg → Flensburg
On stage 9 (Rendsburg → Flensburg, 96 km) the best month is September: 76% 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).
Weather by month
| Month | Good days | Rain days ≥ 1 mm | Rain, mm | Avg high | Days ≥ 30 °C | Days < 10 °C | Daylight, h |
|---|---|---|---|---|---|---|---|
| January | 2% | 28% | 70 | 4 °C | 0% | 96% | 7.8 † |
| February | 5% | 23% | 53 | 5 °C | 0% | 94% | 9.6 † |
| March | 22% | 22% | 47 | 8 °C | 0% | 75% | 11.7 |
| April | 55% | 24% | 46 | 12 °C | 0% | 34% | 14.0 |
| May | 73% | 24% | 66 | 16 °C | 0% | 5% | 16.0 |
| June | 74% | 26% | 71 | 20 °C | 1% | 0% | 17.2 |
| July | 65% | 33% | 82 | 21 °C | 3% | 0% | 16.7 |
| August | 67% | 32% | 81 | 21 °C | 1% | 0% | 14.9 |
| September | 76% | 24% | 64 | 18 °C | 0% | 0% | 12.6 |
| October | 64% | 27% | 75 | 13 °C | 0% | 12% | 10.4 † |
| November | 22% | 25% | 60 | 8 °C | 0% | 68% | 8.3 † |
| December | 4% | 25% | 67 | 5 °C | 0% | 92% | 7.3 † |
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 Rendsburg → Flensburg, km/h | Headwind > 15 km/h, Rendsburg → Flensburg | Headwind > 15 km/h, Flensburg → Rendsburg | Better way |
|---|---|---|---|---|
| January | +2.7 | 6% | 13% | Rendsburg → Flensburg |
| February | +2.5 | 5% | 13% | Rendsburg → Flensburg |
| March | +0.3 | 8% | 8% | either |
| April | −1.0 | 8% | 5% | either |
| May | −1.2 | 7% | 5% | either |
| June | −1.3 | 7% | 4% | either |
| July | −0.5 | 6% | 4% | either |
| August | +1.2 | 4% | 5% | either |
| September | +1.7 | 5% | 8% | either |
| October | +3.6 | 6% | 13% | Rendsburg → Flensburg |
| November | +4.0 | 5% | 14% | Rendsburg → Flensburg |
| December | +3.9 | 4% | 14% | Rendsburg → Flensburg |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in September, km/h |
|---|---|---|
| 972–998 | NW | 0.0 |
| 998–1,023 | N | +3.4 |
| 1,023–1,048 | N | +1.5 |
| 1,048–1,068 | N | +1.9 |
Other stages
- Aachen → Bonn 137 km
- Bonn → Duisburg 121 km
- Duisburg → Lüdinghausen 123 km
- Lüdinghausen → Osnabrück 122 km
- Osnabrück → Goldenstedt 113 km
- Goldenstedt → Zeven 118 km
- Zeven → Wedel 112 km
- Wedel → Rendsburg 130 km
- Rendsburg → Flensburg 96 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.