EuroVelo 4 - Central Europe Route - part Czech Republic, stage 2: Žlutice → Modřany
On stage 2 (Žlutice → Modřany, 146 km) the best month is September: 77% of days were dry with highs of 10–30 °C; the wind barely favours either direction (2.0 km/h on average; ERA5 2006–2025, 9:00–18:00).
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Weather by month
| Month | Good days | Rain days ≥ 1 mm | Rain, mm | Avg high | Days ≥ 30 °C | Days < 10 °C | Daylight, h |
|---|---|---|---|---|---|---|---|
| January | 3% | 18% | 39 | 2 °C | 0% | 97% | 8.5 † |
| February | 8% | 15% | 30 | 4 °C | 0% | 90% | 10.0 † |
| March | 33% | 19% | 37 | 8 °C | 0% | 62% | 11.7 |
| April | 61% | 23% | 43 | 14 °C | 0% | 26% | 13.7 |
| May | 67% | 32% | 75 | 18 °C | 0% | 4% | 15.4 |
| June | 68% | 28% | 78 | 22 °C | 5% | 0% | 16.3 |
| July | 62% | 29% | 78 | 24 °C | 10% | 0% | 15.9 |
| August | 64% | 27% | 83 | 24 °C | 10% | 0% | 14.4 |
| September | 77% | 22% | 58 | 19 °C | 1% | 1% | 12.5 |
| October | 63% | 18% | 46 | 13 °C | 0% | 25% | 10.6 † |
| November | 20% | 16% | 39 | 7 °C | 0% | 78% | 8.9 † |
| December | 3% | 16% | 40 | 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 Žlutice → Modřany, km/h | Headwind > 15 km/h, Žlutice → Modřany | Headwind > 15 km/h, Modřany → Žlutice | Better way |
|---|---|---|---|---|
| January | +5.2 | 1% | 20% | Žlutice → Modřany |
| February | +4.0 | 2% | 17% | Žlutice → Modřany |
| March | +3.2 | 4% | 16% | Žlutice → Modřany |
| April | +1.4 | 3% | 10% | either |
| May | +1.1 | 5% | 9% | either |
| June | +2.5 | 1% | 9% | Žlutice → Modřany |
| July | +4.5 | 0% | 12% | Žlutice → Modřany |
| August | +3.0 | 0% | 8% | Žlutice → Modřany |
| September | +2.0 | 2% | 9% | either |
| October | +2.9 | 1% | 12% | Žlutice → Modřany |
| November | +3.5 | 1% | 14% | Žlutice → Modřany |
| December | +5.1 | 1% | 17% | Žlutice → Modřany |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in September, km/h |
|---|---|---|
| 110–135 | E | +2.3 |
| 135–161 | E | +2.3 |
| 161–186 | SE | +2.0 |
| 186–211 | SE | +1.3 |
| 211–236 | E | +2.2 |
| 236–256 | NE | +1.6 |
Other stages
- Hohenberg an der Eger → Žlutice 110 km
- Žlutice → Modřany 146 km
- Modřany → Čáslav 128 km
- Čáslav → Bystřice nad Pernštejnem 127 km
- Bystřice nad Pernštejnem → Bučovice 122 km
- Bučovice → Kroměříž 118 km
- Kroměříž → Starý Bohumín 144 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.