EuroVelo 4 - Central Europe Route - part Germany, stage 4: Frankfurt am Main → Wertheim
On stage 4 (Frankfurt am Main → Wertheim, 126 km) the best month is September: 77% of days were dry with highs of 10–30 °C; the wind barely favours either direction (1.1 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 | 5% | 26% | 75 | 4 °C | 0% | 92% | 8.5 † |
| February | 13% | 25% | 58 | 6 °C | 0% | 83% | 10.0 † |
| March | 39% | 25% | 61 | 10 °C | 0% | 53% | 11.7 |
| April | 65% | 24% | 52 | 15 °C | 0% | 19% | 13.7 |
| May | 70% | 29% | 81 | 19 °C | 0% | 3% | 15.4 |
| June | 68% | 27% | 72 | 23 °C | 6% | 0% | 16.3 |
| July | 61% | 26% | 74 | 25 °C | 13% | 0% | 15.9 |
| August | 66% | 24% | 74 | 24 °C | 12% | 0% | 14.4 |
| September | 77% | 21% | 61 | 20 °C | 1% | 0% | 12.5 |
| October | 66% | 22% | 64 | 14 °C | 0% | 16% | 10.6 † |
| November | 24% | 25% | 65 | 8 °C | 0% | 68% | 8.9 † |
| December | 6% | 28% | 81 | 5 °C | 0% | 90% | 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 Frankfurt am Main → Wertheim, km/h | Headwind > 15 km/h, Frankfurt am Main → Wertheim | Headwind > 15 km/h, Wertheim → Frankfurt am Main | Better way |
|---|---|---|---|---|
| January | +1.5 | 2% | 9% | either |
| February | +0.5 | 3% | 8% | either |
| March | +1.2 | 3% | 9% | either |
| April | +0.9 | 2% | 5% | either |
| May | +1.6 | 2% | 6% | either |
| June | +2.2 | 0% | 5% | Frankfurt am Main → Wertheim |
| July | +3.3 | 0% | 6% | Frankfurt am Main → Wertheim |
| August | +2.2 | 0% | 4% | Frankfurt am Main → Wertheim |
| September | +1.1 | 1% | 4% | either |
| October | +0.1 | 1% | 5% | either |
| November | +0.1 | 1% | 6% | either |
| December | +0.7 | 2% | 7% | either |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in September, km/h |
|---|---|---|
| 344–370 | E | +2.2 |
| 370–395 | SE | +0.4 |
| 395–420 | S | −0.7 |
| 420–445 | SE | +1.3 |
| 445–471 | E | +2.2 |
Other stages
- Venlo → Köln 104 km
- Köln → Koblenz 109 km
- Koblenz → Frankfurt am Main 133 km
- Frankfurt am Main → Wertheim 126 km
- Wertheim → Würzburg 104 km
- Würzburg → Haßfurt 114 km
- Haßfurt → Kulmbach 112 km
- Kulmbach → Hohenberg an der Eger 107 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.