Heuvelroute, stage 1: Poperinge → Anzegem
On stage 1 (Poperinge → Anzegem, 116 km) the best month is September: 79% of days were dry with highs of 10–30 °C, and riding Poperinge → Anzegem meant an average tailwind of 3.0 km/h (ERA5 2006–2025, 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 | 11% | 25% | 66 | 7 °C | 0% | 79% | 8.4 † |
| February | 23% | 25% | 55 | 8 °C | 0% | 68% | 9.9 † |
| March | 49% | 22% | 56 | 11 °C | 0% | 41% | 11.7 |
| April | 70% | 21% | 41 | 15 °C | 0% | 13% | 13.8 |
| May | 74% | 25% | 63 | 18 °C | 0% | 2% | 15.5 |
| June | 76% | 22% | 59 | 21 °C | 2% | 0% | 16.5 |
| July | 74% | 22% | 60 | 23 °C | 4% | 0% | 16.1 |
| August | 71% | 24% | 68 | 22 °C | 5% | 0% | 14.5 |
| September | 79% | 20% | 52 | 20 °C | 1% | 0% | 12.5 |
| October | 74% | 23% | 71 | 16 °C | 0% | 5% | 10.6 † |
| November | 43% | 26% | 66 | 11 °C | 0% | 40% | 8.8 † |
| December | 19% | 24% | 71 | 8 °C | 0% | 70% | 8.0 † |
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 Poperinge → Anzegem, km/h | Headwind > 15 km/h, Poperinge → Anzegem | Headwind > 15 km/h, Anzegem → Poperinge | Better way |
|---|---|---|---|---|
| January | +4.3 | 3% | 18% | Poperinge → Anzegem |
| February | +3.3 | 6% | 18% | Poperinge → Anzegem |
| March | +2.5 | 6% | 16% | Poperinge → Anzegem |
| April | +1.2 | 5% | 10% | either |
| May | +3.2 | 3% | 14% | Poperinge → Anzegem |
| June | +3.8 | 2% | 12% | Poperinge → Anzegem |
| July | +5.7 | 1% | 16% | Poperinge → Anzegem |
| August | +5.2 | 1% | 14% | Poperinge → Anzegem |
| September | +3.0 | 3% | 12% | Poperinge → Anzegem |
| October | +2.5 | 4% | 13% | Poperinge → Anzegem |
| November | +3.2 | 3% | 13% | Poperinge → Anzegem |
| December | +4.2 | 3% | 16% | Poperinge → Anzegem |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in September, km/h |
|---|---|---|
| 0–26 | SE | +1.4 |
| 26–51 | E | +3.8 |
| 51–76 | E | +3.3 |
| 76–101 | E | +2.8 |
| 101–116 | NE | +3.8 |
Other stages
- Poperinge → Anzegem 116 km
- Anzegem → Halle 112 km
- Halle → Tienen 109 km
- Tienen → Hombourg 114 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.