EuroVelo 7 - Sun Route - part Czech Republic: which way and when to ride
The best month for EuroVelo 7 - Sun Route - part Czech Republic is September: 77% of days were dry with highs of 10–30 °C. In September the wind barely favours either direction — on average 0.2 km/h along the route (ERA5 2006–2025, daytime 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 | 3% | 20% | 47 | 2 °C | 0% | 97% | 8.6 † |
| February | 8% | 17% | 35 | 4 °C | 0% | 90% | 10.0 † |
| March | 35% | 20% | 41 | 9 °C | 0% | 61% | 11.7 |
| April | 63% | 22% | 42 | 14 °C | 0% | 25% | 13.7 |
| May | 67% | 31% | 78 | 18 °C | 0% | 5% | 15.4 |
| June | 66% | 29% | 86 | 22 °C | 6% | 0% | 16.3 |
| July | 61% | 30% | 82 | 24 °C | 11% | 0% | 15.9 |
| August | 64% | 27% | 86 | 24 °C | 10% | 0% | 14.4 |
| September | 77% | 22% | 63 | 19 °C | 1% | 2% | 12.5 |
| October | 64% | 19% | 48 | 13 °C | 0% | 24% | 10.6 † |
| November | 22% | 16% | 43 | 7 °C | 0% | 76% | 9.0 † |
| December | 3% | 18% | 44 | 3 °C | 0% | 96% | 8.1 † |
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 Děčín → Burgfried, km/h | Headwind > 15 km/h, near Děčín → Burgfried | Headwind > 15 km/h, Burgfried → near Děčín | Better way |
|---|---|---|---|---|
| January | −1.5 | 5% | 4% | either |
| February | −0.5 | 4% | 4% | either |
| March | +0.4 | 5% | 5% | either |
| April | +1.8 | 3% | 7% | either |
| May | +1.5 | 3% | 6% | either |
| June | +1.9 | 1% | 4% | either |
| July | +1.5 | 1% | 3% | either |
| August | +0.1 | 1% | 2% | either |
| September | +0.2 | 2% | 3% | either |
| October | −1.4 | 4% | 3% | either |
| November | −2.4 | 4% | 2% | Burgfried → near Děčín |
| December | −2.6 | 5% | 2% | Burgfried → near Děčín |
Stages
The route is split into 4 stages of about 100–150 km between towns; each stage has its own page.
| Stage | km | Best month | Tailwind near Děčín → Burgfried in September, km/h |
|---|---|---|---|
| 1. near Děčín → Mělník | 112 | September | +0.3 |
| 2. Mělník → near Sedlčany | 113 | September | +0.2 |
| 3. near Sedlčany → Týn nad Vltavou | 113 | September | +0.2 |
| 4. Týn nad Vltavou → Burgfried | 112 | September | +0.3 |
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.