Mittelland-Route (Aachen – Zittau), stage 5: Heringen → Erfurt
On stage 5 (Heringen → Erfurt, 118 km) the best month is September: 80% of days were dry with highs of 10–30 °C, and riding Heringen → Erfurt meant an average tailwind of 3.5 km/h (ERA5 2006–2025, 9:00–18:00).
← Mittelland-Route (Aachen – Zittau) (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 | 4% | 22% | 56 | 3 °C | 0% | 95% | 8.4 † |
| February | 10% | 22% | 45 | 4 °C | 0% | 88% | 9.9 † |
| March | 31% | 25% | 48 | 8 °C | 0% | 63% | 11.7 |
| April | 60% | 22% | 45 | 13 °C | 0% | 28% | 13.8 |
| May | 71% | 26% | 67 | 17 °C | 0% | 6% | 15.5 |
| June | 72% | 26% | 62 | 21 °C | 3% | 0% | 16.5 |
| July | 65% | 26% | 68 | 23 °C | 10% | 0% | 16.1 |
| August | 69% | 24% | 69 | 23 °C | 8% | 0% | 14.5 |
| September | 80% | 20% | 56 | 19 °C | 1% | 1% | 12.5 |
| October | 63% | 20% | 52 | 13 °C | 0% | 22% | 10.6 † |
| November | 23% | 20% | 49 | 7 °C | 0% | 73% | 8.8 † |
| December | 4% | 22% | 54 | 4 °C | 0% | 93% | 8.0 † |
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 Heringen → Erfurt, km/h | Headwind > 15 km/h, Heringen → Erfurt | Headwind > 15 km/h, Erfurt → Heringen | Better way |
|---|---|---|---|---|
| January | +6.6 | 1% | 24% | Heringen → Erfurt |
| February | +4.8 | 4% | 20% | Heringen → Erfurt |
| March | +3.5 | 5% | 18% | Heringen → Erfurt |
| April | +1.3 | 6% | 12% | either |
| May | +1.6 | 6% | 12% | either |
| June | +3.2 | 2% | 12% | Heringen → Erfurt |
| July | +5.7 | 1% | 15% | Heringen → Erfurt |
| August | +4.9 | 1% | 12% | Heringen → Erfurt |
| September | +3.5 | 3% | 12% | Heringen → Erfurt |
| October | +4.7 | 2% | 15% | Heringen → Erfurt |
| November | +5.6 | 1% | 17% | Heringen → Erfurt |
| December | +6.9 | 2% | 21% | Heringen → Erfurt |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in September, km/h |
|---|---|---|
| 492–518 | NE | +3.5 |
| 518–543 | E | +3.2 |
| 543–568 | E | +3.3 |
| 568–593 | E | +4.0 |
| 593–610 | NE | +3.8 |
Other stages
- Aachen → Bonn 137 km
- Bonn → Siegen 131 km
- Siegen → Stadtallendorf 110 km
- Stadtallendorf → Heringen 116 km
- Heringen → Erfurt 118 km
- Erfurt → Gera 115 km
- Gera → Freiberg 124 km
- Freiberg → Neustadt in Sachsen 115 km
- Neustadt in Sachsen → Zittau 72 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.