Sverigeleden (10): which way and when to ride
The best month for Sverigeleden (10) is June: 71% 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% | 19% | 46 | -4 °C | 0% | 100% | 5.8 † |
| February | 0% | 13% | 29 | -3 °C | 0% | 100% | 8.6 † |
| March | 2% | 13% | 32 | 2 °C | 0% | 98% | 11.5 |
| April | 21% | 16% | 32 | 7 °C | 0% | 79% | 14.8 |
| May | 53% | 23% | 55 | 13 °C | 0% | 36% | 17.9 |
| June | 71% | 27% | 70 | 17 °C | 0% | 5% | 20.1 |
| July | 67% | 32% | 92 | 19 °C | 0% | 0% | 19.1 |
| August | 70% | 30% | 85 | 18 °C | 0% | 1% | 16.1 |
| September | 64% | 24% | 66 | 13 °C | 0% | 17% | 12.8 |
| October | 16% | 21% | 64 | 7 °C | 0% | 80% | 9.7 † |
| November | 1% | 19% | 48 | 1 °C | 0% | 99% | 6.7 † |
| December | 0% | 19% | 47 | -2 °C | 0% | 100% | 4.9 † |
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 Sundsvall → near Nälden, km/h | Headwind > 15 km/h, near Sundsvall → near Nälden | Headwind > 15 km/h, near Nälden → near Sundsvall | Better way |
|---|---|---|---|---|
| January | −0.8 | 6% | 5% | either |
| February | −0.8 | 6% | 4% | either |
| March | −1.8 | 9% | 3% | either |
| April | −2.6 | 10% | 3% | near Nälden → near Sundsvall |
| May | −1.4 | 9% | 4% | either |
| June | −2.0 | 10% | 2% | either |
| July | −0.6 | 7% | 2% | either |
| August | −0.1 | 5% | 4% | either |
| September | −0.6 | 7% | 4% | either |
| October | −0.8 | 7% | 4% | either |
| November | −0.6 | 5% | 3% | either |
| December | −1.0 | 6% | 4% | either |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in June, km/h |
|---|---|---|
| 0–26 | NW | −1.7 |
| 26–51 | NW | −2.3 |
| 51–76 | S | +0.1 |
| 76–102 | SW | −1.2 |
| 102–130 | W | −2.5 |
| 130–156 | SW | −0.7 |
| 156–181 | W | −2.2 |
| 181–207 | N | −2.0 |
| 207–232 | NW | −2.9 |
| 232–257 | NW | −2.8 |
| 257–282 | N | −2.4 |
| 282–308 | N | −1.4 |
| 308–333 | N | −1.9 |
| 333–361 | NW | −3.7 |
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.