EuroVelo 15 - Rheinradweg - Ingelheim–Grenze Rhein-Neckar-Kreis/Landkreis Karlsruhe: which way and when to ride
The best month for EuroVelo 15 - Rheinradweg - Ingelheim–Grenze Rhein-Neckar-Kreis/Landkreis Karlsruhe is September: 80% of days were dry with highs of 10–30 °C. In September the wind barely favours either direction — on average 0.1 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 | 7% | 22% | 61 | 5 °C | 0% | 88% | 8.6 † |
| February | 18% | 21% | 48 | 6 °C | 0% | 77% | 10.0 † |
| March | 45% | 22% | 49 | 11 °C | 0% | 46% | 11.7 |
| April | 70% | 21% | 43 | 16 °C | 0% | 15% | 13.7 |
| May | 74% | 25% | 70 | 19 °C | 1% | 2% | 15.3 |
| June | 69% | 23% | 62 | 24 °C | 9% | 0% | 16.3 |
| July | 61% | 23% | 60 | 26 °C | 18% | 0% | 15.9 |
| August | 64% | 21% | 62 | 25 °C | 15% | 0% | 14.4 |
| September | 80% | 18% | 56 | 21 °C | 2% | 0% | 12.5 |
| October | 71% | 20% | 59 | 15 °C | 0% | 12% | 10.6 † |
| November | 28% | 22% | 57 | 9 °C | 0% | 62% | 9.0 † |
| December | 8% | 26% | 68 | 6 °C | 0% | 86% | 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 Oberhausen-Rheinhausen → Ingelheim am Rhein, km/h | Headwind > 15 km/h, Oberhausen-Rheinhausen → Ingelheim am Rhein | Headwind > 15 km/h, Ingelheim am Rhein → Oberhausen-Rheinhausen | Better way |
|---|---|---|---|---|
| January | +1.8 | 4% | 7% | either |
| February | +1.7 | 4% | 7% | either |
| March | −0.1 | 5% | 5% | either |
| April | −1.0 | 4% | 3% | either |
| May | −0.9 | 4% | 2% | either |
| June | −1.2 | 3% | 1% | either |
| July | −0.6 | 3% | 2% | either |
| August | +0.3 | 2% | 2% | either |
| September | +0.1 | 2% | 3% | either |
| October | +1.7 | 3% | 4% | either |
| November | +2.3 | 3% | 6% | Oberhausen-Rheinhausen → Ingelheim am Rhein |
| December | +2.6 | 2% | 8% | Oberhausen-Rheinhausen → Ingelheim am Rhein |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in September, km/h |
|---|---|---|
| 0–27 | N | +0.8 |
| 27–52 | NW | −0.4 |
| 52–78 | N | +0.9 |
| 78–103 | N | +1.4 |
| 103–128 | NW | −0.1 |
| 128–154 | W | −1.9 |
| 154–158 | SW | −2.3 |
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.