Cykelspåret (11): which way and when to ride
The best month for Cykelspåret (11) is September: 79% of days were dry with highs of 10–30 °C. In September the wind barely favours either direction — on average 0.8 km/h along the route (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% | 15% | 41 | -1 °C | 0% | 100% | 6.5 † |
| February | 0% | 13% | 31 | 0 °C | 0% | 100% | 8.9 † |
| March | 12% | 12% | 27 | 4 °C | 0% | 88% | 11.6 |
| April | 40% | 15% | 32 | 10 °C | 0% | 57% | 14.5 |
| May | 70% | 21% | 46 | 15 °C | 0% | 15% | 17.3 |
| June | 73% | 25% | 58 | 20 °C | 2% | 1% | 19.1 |
| July | 69% | 29% | 80 | 22 °C | 3% | 0% | 18.3 |
| August | 71% | 29% | 88 | 20 °C | 0% | 0% | 15.7 |
| September | 79% | 19% | 49 | 16 °C | 0% | 3% | 12.8 |
| October | 40% | 18% | 60 | 10 °C | 0% | 51% | 9.9 † |
| November | 6% | 19% | 46 | 4 °C | 0% | 93% | 7.2 † |
| December | 1% | 19% | 43 | 1 °C | 0% | 99% | 5.7 † |
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 near Karlholmsbruk → near Norrsundet, km/h | Headwind > 15 km/h, near Karlholmsbruk → near Norrsundet | Headwind > 15 km/h, near Norrsundet → near Karlholmsbruk | Better way |
|---|---|---|---|---|
| January | −0.1 | 8% | 8% | either |
| February | −0.1 | 7% | 6% | either |
| March | −0.7 | 7% | 5% | either |
| April | −1.6 | 8% | 3% | either |
| May | 0.0 | 5% | 4% | either |
| June | 0.0 | 5% | 3% | either |
| July | +0.5 | 4% | 3% | either |
| August | +1.2 | 3% | 4% | either |
| September | +0.8 | 6% | 6% | either |
| October | +0.6 | 6% | 7% | either |
| November | +0.3 | 7% | 7% | either |
| December | +0.1 | 6% | 8% | either |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in September, km/h |
|---|---|---|
| 0–25 | NW | +0.4 |
| 25–32 | SE | −0.4 |
| 32–57 | NW | −0.6 |
| 57–82 | N | +2.3 |
| 82–108 | NW | +0.5 |
| 108–120 | NE | +2.9 |
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.