Sverigeleden (23): which way and when to ride
The best month for Sverigeleden (23) is September: 80% of days were dry with highs of 10–30 °C. In September, riding near Åsbro → Stockholm meant an average tailwind of 2.6 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% | 17% | 46 | 0 °C | 0% | 100% | 6.9 † |
| February | 1% | 13% | 33 | 1 °C | 0% | 99% | 9.2 † |
| March | 11% | 14% | 32 | 5 °C | 0% | 89% | 11.6 |
| April | 43% | 15% | 32 | 10 °C | 0% | 54% | 14.4 |
| May | 70% | 22% | 52 | 15 °C | 0% | 13% | 16.9 |
| June | 75% | 25% | 63 | 19 °C | 0% | 0% | 18.4 |
| July | 72% | 27% | 76 | 22 °C | 1% | 0% | 17.8 |
| August | 70% | 30% | 81 | 20 °C | 0% | 0% | 15.4 |
| September | 80% | 19% | 54 | 16 °C | 0% | 1% | 12.7 |
| October | 46% | 19% | 60 | 10 °C | 0% | 42% | 10.1 † |
| November | 7% | 20% | 51 | 5 °C | 0% | 91% | 7.6 † |
| December | 1% | 19% | 48 | 2 °C | 0% | 99% | 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 Stockholm → near Åsbro, km/h | Headwind > 15 km/h, Stockholm → near Åsbro | Headwind > 15 km/h, near Åsbro → Stockholm | Better way |
|---|---|---|---|---|
| January | −3.1 | 16% | 6% | near Åsbro → Stockholm |
| February | −2.6 | 13% | 6% | near Åsbro → Stockholm |
| March | −2.6 | 13% | 5% | near Åsbro → Stockholm |
| April | −1.6 | 11% | 6% | either |
| May | −0.7 | 8% | 6% | either |
| June | −2.3 | 10% | 4% | near Åsbro → Stockholm |
| July | −2.5 | 10% | 4% | near Åsbro → Stockholm |
| August | −2.6 | 10% | 4% | near Åsbro → Stockholm |
| September | −2.6 | 13% | 5% | near Åsbro → Stockholm |
| October | −3.0 | 14% | 6% | near Åsbro → Stockholm |
| November | −2.6 | 13% | 6% | near Åsbro → Stockholm |
| December | −4.1 | 17% | 4% | near Åsbro → Stockholm |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in September, km/h |
|---|---|---|
| 0–25 | SW | −3.8 |
| 25–51 | S | −4.0 |
| 51–77 | S | −3.5 |
| 77–102 | SW | −3.9 |
| 102–128 | NW | −1.0 |
| 128–153 | SW | −4.3 |
| 153–178 | N | +1.9 |
| 178–203 | NW | −0.2 |
| 203–229 | W | −3.2 |
| 229–255 | W | −3.5 |
| 255–280 | NW | −1.1 |
| 280–306 | SW | −3.9 |
| 306–329 | W | −2.7 |
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.