Sverigeleden (21): which way and when to ride
The best month for Sverigeleden (21) is September: 74% of days were dry with highs of 10–30 °C. In September the wind barely favours either direction — on average 1.2 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% | 21% | 57 | 0 °C | 0% | 100% | 6.9 † |
| February | 0% | 15% | 42 | 0 °C | 0% | 100% | 9.1 † |
| March | 5% | 14% | 38 | 4 °C | 0% | 95% | 11.6 |
| April | 34% | 15% | 35 | 9 °C | 0% | 64% | 14.4 |
| May | 68% | 22% | 61 | 14 °C | 0% | 15% | 16.9 |
| June | 73% | 27% | 78 | 19 °C | 0% | 0% | 18.5 |
| July | 68% | 31% | 106 | 21 °C | 1% | 0% | 17.8 |
| August | 65% | 35% | 112 | 19 °C | 0% | 0% | 15.5 |
| September | 74% | 25% | 74 | 16 °C | 0% | 2% | 12.7 |
| October | 37% | 24% | 76 | 10 °C | 0% | 49% | 10.0 † |
| November | 5% | 22% | 58 | 5 °C | 0% | 93% | 7.5 † |
| December | 0% | 23% | 59 | 2 °C | 0% | 100% | 6.2 † |
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 near Anderstorp → Karlstad, km/h | Headwind > 15 km/h, near Anderstorp → Karlstad | Headwind > 15 km/h, Karlstad → near Anderstorp | Better way |
|---|---|---|---|---|
| January | +1.2 | 6% | 11% | either |
| February | +1.1 | 4% | 8% | either |
| March | +0.1 | 6% | 6% | either |
| April | −0.3 | 5% | 4% | either |
| May | +0.8 | 3% | 5% | either |
| June | +0.1 | 4% | 3% | either |
| July | +0.4 | 3% | 4% | either |
| August | +1.3 | 3% | 5% | either |
| September | +1.2 | 5% | 7% | either |
| October | +1.1 | 6% | 9% | either |
| November | +1.4 | 6% | 10% | either |
| December | +0.8 | 6% | 10% | either |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in September, km/h |
|---|---|---|
| 0–25 | N | +1.9 |
| 25–51 | NW | +1.5 |
| 51–76 | NW | +1.5 |
| 76–101 | N | +4.1 |
| 101–126 | W | −0.6 |
| 126–142 | W | −2.6 |
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.