Hærvejsruten, stage 4: Vejen → Padborg
On stage 4 (Vejen → Padborg, 108 km) the best month is June: 73% of days were dry with highs of 10–30 °C; the wind barely favours either direction (0.5 km/h on average; 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 | 1% | 25% | 68 | 4 °C | 0% | 98% | 7.7 † |
| February | 3% | 23% | 54 | 4 °C | 0% | 96% | 9.6 † |
| March | 18% | 21% | 48 | 7 °C | 0% | 80% | 11.7 |
| April | 53% | 23% | 49 | 12 °C | 0% | 37% | 14.0 |
| May | 72% | 25% | 65 | 16 °C | 0% | 6% | 16.1 |
| June | 73% | 27% | 74 | 19 °C | 0% | 0% | 17.4 |
| July | 65% | 34% | 91 | 21 °C | 1% | 0% | 16.9 |
| August | 65% | 35% | 88 | 21 °C | 1% | 0% | 15.0 |
| September | 73% | 27% | 72 | 18 °C | 0% | 0% | 12.6 |
| October | 62% | 29% | 78 | 13 °C | 0% | 13% | 10.3 † |
| November | 21% | 24% | 61 | 8 °C | 0% | 70% | 8.2 † |
| December | 4% | 24% | 69 | 5 °C | 0% | 93% | 7.2 † |
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 Vejen → Padborg, km/h | Headwind > 15 km/h, Vejen → Padborg | Headwind > 15 km/h, Padborg → Vejen | Better way |
|---|---|---|---|---|
| January | −2.9 | 14% | 6% | Padborg → Vejen |
| February | −2.6 | 13% | 6% | Padborg → Vejen |
| March | −0.7 | 9% | 8% | either |
| April | +0.5 | 5% | 8% | either |
| May | +0.6 | 6% | 7% | either |
| June | +0.5 | 5% | 6% | either |
| July | −0.2 | 5% | 5% | either |
| August | −1.9 | 6% | 3% | either |
| September | −2.1 | 9% | 5% | Padborg → Vejen |
| October | −3.7 | 14% | 5% | Padborg → Vejen |
| November | −3.9 | 15% | 5% | Padborg → Vejen |
| December | −3.8 | 15% | 4% | Padborg → Vejen |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in June, km/h |
|---|---|---|
| 338–363 | S | +0.9 |
| 363–389 | SE | +2.1 |
| 389–414 | S | −0.4 |
| 414–439 | S | −0.8 |
| 439–446 | S | +2.0 |
Other stages
- Frederikshavn → Svenstrup 102 km
- Svenstrup → Viborg 102 km
- Viborg → Vejen 135 km
- Vejen → Padborg 108 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.