Østkystruten, stage 3: Grenaa → Horsens
On stage 3 (Grenaa → Horsens, 148 km) the best month is September: 79% of days were dry with highs of 10–30 °C, and riding Horsens → Grenaa meant an average tailwind of 5.4 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 | 0% | 21% | 58 | 4 °C | 0% | 100% | 7.5 † |
| February | 1% | 18% | 44 | 4 °C | 0% | 99% | 9.5 † |
| March | 9% | 17% | 40 | 6 °C | 0% | 90% | 11.6 |
| April | 43% | 19% | 38 | 10 °C | 0% | 51% | 14.1 |
| May | 71% | 24% | 54 | 14 °C | 0% | 8% | 16.3 |
| June | 78% | 22% | 63 | 18 °C | 0% | 0% | 17.6 |
| July | 75% | 25% | 78 | 20 °C | 0% | 0% | 17.1 |
| August | 75% | 25% | 79 | 20 °C | 0% | 0% | 15.1 |
| September | 79% | 21% | 56 | 17 °C | 0% | 0% | 12.6 |
| October | 65% | 23% | 69 | 12 °C | 0% | 16% | 10.3 † |
| November | 19% | 22% | 56 | 8 °C | 0% | 74% | 8.1 † |
| December | 2% | 21% | 59 | 5 °C | 0% | 97% | 7.0 † |
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 Grenaa → Horsens, km/h | Headwind > 15 km/h, Grenaa → Horsens | Headwind > 15 km/h, Horsens → Grenaa | Better way |
|---|---|---|---|---|
| January | −7.0 | 34% | 11% | Horsens → Grenaa |
| February | −5.4 | 30% | 12% | Horsens → Grenaa |
| March | −3.9 | 26% | 12% | Horsens → Grenaa |
| April | −2.1 | 19% | 11% | Horsens → Grenaa |
| May | −2.4 | 19% | 11% | Horsens → Grenaa |
| June | −5.1 | 23% | 5% | Horsens → Grenaa |
| July | −6.2 | 25% | 4% | Horsens → Grenaa |
| August | −6.3 | 26% | 5% | Horsens → Grenaa |
| September | −5.4 | 28% | 9% | Horsens → Grenaa |
| October | −6.2 | 31% | 11% | Horsens → Grenaa |
| November | −5.8 | 31% | 11% | Horsens → Grenaa |
| December | −8.1 | 36% | 8% | Horsens → Grenaa |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in September, km/h |
|---|---|---|
| 234–260 | SW | −6.5 |
| 260–285 | W | −4.4 |
| 285–310 | SW | −5.7 |
| 310–336 | S | −4.2 |
| 336–361 | SW | −6.5 |
| 361–382 | W | −5.4 |
Other stages
- near Skagen → Hals 96 km
- Hals → Grenaa 139 km
- Grenaa → Horsens 148 km
- Horsens → Fredericia 117 km
- Fredericia → Haderslev 100 km
- Haderslev → Sønderborg 68 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.