EuroVelo 9 - Baltic-Adriatic - part Austria, stage 1: near Břeclav → Vienna
On stage 1 (near Břeclav → Vienna, 108 km) the best month is September: 79% of days were dry with highs of 10–30 °C; the wind barely favours either direction (0.1 km/h on average; ERA5 2006–2025, 9:00–18:00).
← EuroVelo 9 - Baltic-Adriatic - part Austria (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 | 7% | 16% | 37 | 3 °C | 0% | 92% | 8.7 † |
| February | 19% | 13% | 31 | 6 °C | 0% | 78% | 10.1 † |
| March | 49% | 15% | 36 | 11 °C | 0% | 44% | 11.7 |
| April | 74% | 18% | 42 | 17 °C | 0% | 14% | 13.6 |
| May | 73% | 26% | 73 | 20 °C | 1% | 1% | 15.2 |
| June | 65% | 24% | 80 | 25 °C | 14% | 0% | 16.1 |
| July | 55% | 22% | 71 | 27 °C | 28% | 0% | 15.7 |
| August | 57% | 21% | 72 | 26 °C | 25% | 0% | 14.3 |
| September | 79% | 17% | 79 | 21 °C | 4% | 0% | 12.5 |
| October | 76% | 16% | 45 | 15 °C | 0% | 12% | 10.7 † |
| November | 33% | 14% | 39 | 9 °C | 0% | 62% | 9.1 † |
| December | 6% | 16% | 38 | 4 °C | 0% | 92% | 8.3 † |
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 near Břeclav → Vienna, km/h | Headwind > 15 km/h, near Břeclav → Vienna | Headwind > 15 km/h, Vienna → near Břeclav | Better way |
|---|---|---|---|---|
| January | −1.0 | 7% | 5% | either |
| February | +0.1 | 7% | 7% | either |
| March | +0.4 | 8% | 8% | either |
| April | +1.2 | 6% | 9% | either |
| May | +1.3 | 6% | 8% | either |
| June | +1.4 | 4% | 6% | either |
| July | +0.4 | 4% | 5% | either |
| August | −0.5 | 4% | 3% | either |
| September | +0.1 | 5% | 5% | either |
| October | −1.1 | 7% | 4% | either |
| November | −2.3 | 8% | 3% | Vienna → near Břeclav |
| December | −1.7 | 6% | 4% | either |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in September, km/h |
|---|---|---|
| 0–25 | SW | +0.3 |
| 25–50 | W | −0.6 |
| 50–76 | S | +0.9 |
| 76–101 | SW | −0.6 |
| 101–108 | S | +1.1 |
Other stages
- near Břeclav → Vienna 108 km
- Vienna → Hartberg 141 km
- Hartberg → Spielfeld 154 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.