Danmark på tværs: which way and when to ride
The best month for Danmark på tværs is June: 76% of days were dry with highs of 10–30 °C. In June, riding near Ringkøbing → København meant an average tailwind of 6.4 km/h (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 | 0% | 24% | 64 | 4 °C | 0% | 99% | 7.6 † |
| February | 1% | 20% | 48 | 4 °C | 0% | 98% | 9.5 † |
| March | 12% | 19% | 44 | 7 °C | 0% | 87% | 11.6 |
| April | 47% | 21% | 41 | 11 °C | 0% | 46% | 14.1 |
| May | 70% | 25% | 57 | 15 °C | 0% | 8% | 16.3 |
| June | 76% | 24% | 66 | 18 °C | 0% | 0% | 17.5 |
| July | 71% | 29% | 84 | 20 °C | 0% | 0% | 17.0 |
| August | 70% | 30% | 86 | 20 °C | 0% | 0% | 15.1 |
| September | 76% | 24% | 67 | 17 °C | 0% | 0% | 12.6 |
| October | 63% | 26% | 76 | 12 °C | 0% | 15% | 10.3 † |
| November | 19% | 24% | 60 | 8 °C | 0% | 72% | 8.1 † |
| December | 3% | 23% | 64 | 5 °C | 0% | 96% | 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 København → near Ringkøbing, km/h | Headwind > 15 km/h, København → near Ringkøbing | Headwind > 15 km/h, near Ringkøbing → København | Better way |
|---|---|---|---|---|
| January | −4.7 | 28% | 14% | near Ringkøbing → København |
| February | −3.2 | 26% | 15% | near Ringkøbing → København |
| March | −3.5 | 26% | 15% | near Ringkøbing → København |
| April | −3.3 | 24% | 13% | near Ringkøbing → København |
| May | −3.6 | 25% | 13% | near Ringkøbing → København |
| June | −6.4 | 30% | 8% | near Ringkøbing → København |
| July | −7.3 | 32% | 7% | near Ringkøbing → København |
| August | −5.7 | 27% | 8% | near Ringkøbing → København |
| September | −4.1 | 27% | 13% | near Ringkøbing → København |
| October | −3.0 | 24% | 14% | near Ringkøbing → København |
| November | −2.3 | 22% | 14% | near Ringkøbing → København |
| December | −5.1 | 28% | 11% | near Ringkøbing → København |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in June, km/h |
|---|---|---|
| 0–25 | SW | −6.3 |
| 25–55 | W | −6.0 |
| 55–80 | W | −6.3 |
| 80–105 | W | −6.0 |
| 105–134 | W | −6.2 |
| 134–159 | NW | −5.0 |
| 159–184 | NW | −4.5 |
| 184–210 | NW | −4.6 |
| 210–235 | W | −5.3 |
| 235–260 | W | −6.8 |
| 260–287 | W | −7.5 |
| 287–312 | SW | −7.2 |
| 312–338 | W | −8.3 |
| 338–363 | NW | −7.6 |
| 363–380 | NW | −10.1 |
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.