Cykelspåret (18): which way and when to ride
The best month for Cykelspåret (18) is June: 79% of days were dry with highs of 10–30 °C. In June the wind barely favours either direction — on average 2.0 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% | 18% | 48 | -4 °C | 0% | 100% | 5.2 † |
| February | 0% | 14% | 34 | -4 °C | 0% | 100% | 8.3 † |
| March | 1% | 10% | 30 | 0 °C | 0% | 99% | 11.5 |
| April | 10% | 13% | 33 | 5 °C | 0% | 90% | 15.0 |
| May | 50% | 15% | 37 | 11 °C | 0% | 45% | 18.5 |
| June | 79% | 19% | 49 | 16 °C | 0% | 5% | 21.3 |
| July | 77% | 23% | 68 | 19 °C | 0% | 0% | 19.9 |
| August | 76% | 24% | 71 | 18 °C | 0% | 0% | 16.4 |
| September | 69% | 21% | 61 | 13 °C | 0% | 15% | 12.9 |
| October | 15% | 21% | 69 | 7 °C | 0% | 81% | 9.5 † |
| November | 1% | 21% | 55 | 2 °C | 0% | 99% | 6.2 † |
| December | 0% | 25% | 60 | -1 °C | 0% | 100% | 4.0 † |
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 Robertsfors → Kåge, km/h | Headwind > 15 km/h, Robertsfors → Kåge | Headwind > 15 km/h, Kåge → Robertsfors | Better way |
|---|---|---|---|---|
| January | +0.8 | 11% | 16% | either |
| February | +1.4 | 9% | 15% | either |
| March | +1.2 | 9% | 13% | either |
| April | +0.2 | 10% | 8% | either |
| May | +1.5 | 9% | 11% | either |
| June | +2.0 | 7% | 10% | either |
| July | +1.8 | 7% | 9% | either |
| August | +2.8 | 7% | 12% | Robertsfors → Kåge |
| September | +3.0 | 7% | 15% | Robertsfors → Kåge |
| October | +1.5 | 10% | 14% | either |
| November | +1.3 | 10% | 15% | either |
| December | +1.9 | 10% | 17% | either |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in June, km/h |
|---|---|---|
| 0–27 | NE | +2.9 |
| 27–52 | NE | +0.4 |
| 52–78 | NE | +1.8 |
| 78–103 | NW | +2.5 |
| 103–128 | NW | +2.5 |
| 128–135 | NE | +1.1 |
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.