Euroregionalny Szlak Rowerowy ER-2: which way and when to ride
The best month for Euroregionalny Szlak Rowerowy ER-2 is September: 69% of days were dry with highs of 10–30 °C. In September, riding Zittau → near Mieroszów meant an average tailwind of 2.3 km/h (ERA5 2006–2025, daytime 9:00–18:00).
Also passes through Czechia
Weather by month
| Month | Good days | Rain days ≥ 1 mm | Rain, mm | Avg high | Days ≥ 30 °C | Days < 10 °C | Daylight, h |
|---|---|---|---|---|---|---|---|
| January | 1% | 30% | 79 | 0 °C | 0% | 99% | 8.4 † |
| February | 3% | 23% | 60 | 2 °C | 0% | 97% | 9.9 † |
| March | 21% | 27% | 61 | 6 °C | 0% | 76% | 11.7 |
| April | 51% | 28% | 55 | 12 °C | 0% | 38% | 13.8 |
| May | 58% | 37% | 93 | 16 °C | 0% | 10% | 15.5 |
| June | 63% | 35% | 104 | 20 °C | 2% | 1% | 16.5 |
| July | 57% | 40% | 120 | 22 °C | 3% | 0% | 16.1 |
| August | 63% | 34% | 125 | 22 °C | 3% | 0% | 14.5 |
| September | 69% | 29% | 84 | 17 °C | 0% | 6% | 12.5 |
| October | 50% | 26% | 71 | 12 °C | 0% | 38% | 10.6 † |
| November | 17% | 23% | 63 | 6 °C | 0% | 81% | 8.8 † |
| December | 1% | 27% | 67 | 2 °C | 0% | 98% | 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 Zittau → near Mieroszów, km/h | Headwind > 15 km/h, Zittau → near Mieroszów | Headwind > 15 km/h, near Mieroszów → Zittau | Better way |
|---|---|---|---|---|
| January | +3.6 | 1% | 13% | Zittau → near Mieroszów |
| February | +3.4 | 2% | 13% | Zittau → near Mieroszów |
| March | +3.3 | 3% | 12% | Zittau → near Mieroszów |
| April | +2.4 | 4% | 12% | Zittau → near Mieroszów |
| May | +1.9 | 3% | 10% | either |
| June | +3.2 | 1% | 9% | Zittau → near Mieroszów |
| July | +5.0 | 0% | 10% | Zittau → near Mieroszów |
| August | +3.0 | 1% | 6% | Zittau → near Mieroszów |
| September | +2.3 | 2% | 7% | Zittau → near Mieroszów |
| October | +2.5 | 2% | 9% | Zittau → near Mieroszów |
| November | +2.2 | 1% | 9% | Zittau → near Mieroszów |
| December | +3.2 | 1% | 11% | Zittau → near Mieroszów |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in September, km/h |
|---|---|---|
| 0–25 | E | +2.9 |
| 25–50 | E | +3.2 |
| 50–76 | SE | +1.6 |
| 76–101 | E | +2.4 |
| 101–126 | E | +2.4 |
| 126–151 | SE | +1.8 |
| 151–161 | SE | +2.1 |
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.