EuroVelo 13 - Iron Curtain Trail - Inner German part, stage 11: Tann → Ummerstadt
On stage 11 (Tann → Ummerstadt, 122 km) the best month is September: 77% of days were dry with highs of 10–30 °C; the wind barely favours either direction (0.9 km/h on average; ERA5 2006–2025, 9:00–18:00).
← EuroVelo 13 - Iron Curtain Trail - Inner German part (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 | 3% | 25% | 69 | 2 °C | 0% | 96% | 8.5 † |
| February | 7% | 24% | 52 | 4 °C | 0% | 91% | 10.0 † |
| March | 31% | 26% | 56 | 8 °C | 0% | 64% | 11.7 |
| April | 59% | 25% | 50 | 14 °C | 0% | 28% | 13.7 |
| May | 67% | 31% | 75 | 17 °C | 0% | 6% | 15.4 |
| June | 68% | 29% | 72 | 21 °C | 3% | 0% | 16.4 |
| July | 64% | 28% | 76 | 23 °C | 9% | 0% | 16.0 |
| August | 66% | 27% | 80 | 23 °C | 7% | 0% | 14.5 |
| September | 77% | 23% | 60 | 18 °C | 0% | 1% | 12.5 |
| October | 59% | 22% | 59 | 13 °C | 0% | 26% | 10.6 † |
| November | 17% | 25% | 58 | 7 °C | 0% | 78% | 8.9 † |
| December | 2% | 26% | 71 | 3 °C | 0% | 96% | 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 Tann → Ummerstadt, km/h | Headwind > 15 km/h, Tann → Ummerstadt | Headwind > 15 km/h, Ummerstadt → Tann | Better way |
|---|---|---|---|---|
| January | +1.2 | 2% | 8% | either |
| February | +0.4 | 3% | 7% | either |
| March | +1.2 | 3% | 8% | either |
| April | +1.0 | 2% | 5% | either |
| May | +1.4 | 2% | 6% | either |
| June | +2.2 | 1% | 5% | Tann → Ummerstadt |
| July | +3.2 | 0% | 6% | Tann → Ummerstadt |
| August | +1.8 | 0% | 3% | either |
| September | +0.9 | 1% | 4% | either |
| October | −0.1 | 1% | 5% | either |
| November | −0.3 | 2% | 5% | either |
| December | +0.2 | 2% | 6% | either |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in September, km/h |
|---|---|---|
| 1,228–1,253 | S | −0.8 |
| 1,253–1,278 | E | +2.6 |
| 1,278–1,304 | SE | +0.2 |
| 1,304–1,329 | SE | +0.3 |
| 1,329–1,350 | E | +2.4 |
Other stages
- Świnoujście → Universitäts- und Hansestadt Greifswald 106 km
- Universitäts- und Hansestadt Greifswald → Seeheilbad Graal-Müritz 137 km
- Seeheilbad Graal-Müritz → Travemünde 141 km
- Travemünde → Büchen 130 km
- Büchen → Lenzen 118 km
- Lenzen → Wittingen 124 km
- Wittingen → Schöningen 111 km
- Schöningen → Bad Sachsa 121 km
- Bad Sachsa → Eschwege 123 km
- Eschwege → Tann 122 km
- Tann → Ummerstadt 122 km
- Ummerstadt → Probstzella 124 km
- Probstzella → Haag 101 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.