Euroroute R1 - part Netherlands, stage 4: Arnhem → near Eibergen
On stage 4 (Arnhem → near Eibergen, 99 km) the best month is September: 77% of days were dry with highs of 10–30 °C, and riding Arnhem → near Eibergen meant an average tailwind of 3.6 km/h (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 | 6% | 28% | 73 | 6 °C | 0% | 87% | 8.2 † |
| February | 15% | 26% | 63 | 7 °C | 0% | 77% | 9.8 † |
| March | 41% | 26% | 56 | 10 °C | 0% | 50% | 11.7 |
| April | 66% | 24% | 45 | 15 °C | 0% | 17% | 13.8 |
| May | 70% | 29% | 67 | 18 °C | 1% | 2% | 15.7 |
| June | 70% | 26% | 67 | 22 °C | 4% | 0% | 16.7 |
| July | 61% | 32% | 85 | 23 °C | 8% | 0% | 16.3 |
| August | 65% | 30% | 81 | 23 °C | 6% | 0% | 14.6 |
| September | 77% | 23% | 58 | 19 °C | 1% | 0% | 12.6 |
| October | 70% | 25% | 72 | 15 °C | 0% | 7% | 10.5 † |
| November | 33% | 26% | 64 | 10 °C | 0% | 54% | 8.7 † |
| December | 11% | 24% | 71 | 7 °C | 0% | 80% | 7.8 † |
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 Arnhem → near Eibergen, km/h | Headwind > 15 km/h, Arnhem → near Eibergen | Headwind > 15 km/h, near Eibergen → Arnhem | Better way |
|---|---|---|---|---|
| January | +5.8 | 4% | 23% | Arnhem → near Eibergen |
| February | +3.8 | 7% | 20% | Arnhem → near Eibergen |
| March | +2.8 | 7% | 17% | Arnhem → near Eibergen |
| April | +1.5 | 7% | 13% | either |
| May | +2.3 | 5% | 15% | Arnhem → near Eibergen |
| June | +3.9 | 2% | 14% | Arnhem → near Eibergen |
| July | +6.1 | 1% | 18% | Arnhem → near Eibergen |
| August | +5.4 | 1% | 16% | Arnhem → near Eibergen |
| September | +3.6 | 3% | 15% | Arnhem → near Eibergen |
| October | +3.7 | 4% | 16% | Arnhem → near Eibergen |
| November | +4.1 | 3% | 17% | Arnhem → near Eibergen |
| December | +5.7 | 4% | 22% | Arnhem → near Eibergen |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in September, km/h |
|---|---|---|
| 356–381 | NE | +4.6 |
| 381–407 | E | +4.3 |
| 407–432 | E | +4.4 |
| 432–455 | SE | +1.0 |
Other stages
- Sluis → Goedereede 119 km
- Goedereede → Bodegraven 117 km
- Bodegraven → Arnhem 123 km
- Arnhem → near Eibergen 99 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.