Cykelspåret (13): which way and when to ride
The best month for Cykelspåret (13) is June: 79% of days were dry with highs of 10–30 °C. In June the wind barely favours either direction — on average 1.4 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% | 17% | 53 | -1 °C | 0% | 100% | 6.1 † |
| February | 0% | 14% | 34 | -1 °C | 0% | 100% | 8.8 † |
| March | 2% | 13% | 32 | 2 °C | 0% | 98% | 11.5 |
| April | 14% | 14% | 30 | 6 °C | 0% | 86% | 14.7 |
| May | 49% | 17% | 40 | 11 °C | 0% | 45% | 17.6 |
| June | 79% | 20% | 49 | 16 °C | 0% | 3% | 19.6 |
| July | 76% | 24% | 72 | 19 °C | 0% | 0% | 18.7 |
| August | 75% | 25% | 80 | 18 °C | 0% | 0% | 15.9 |
| September | 75% | 20% | 59 | 14 °C | 0% | 7% | 12.8 |
| October | 26% | 20% | 72 | 8 °C | 0% | 68% | 9.8 † |
| November | 2% | 23% | 61 | 3 °C | 0% | 98% | 6.9 † |
| December | 0% | 21% | 57 | 1 °C | 0% | 100% | 5.2 † |
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 Sundsvall → near Iggesund, km/h | Headwind > 15 km/h, near Sundsvall → near Iggesund | Headwind > 15 km/h, near Iggesund → near Sundsvall | Better way |
|---|---|---|---|---|
| January | −3.1 | 21% | 10% | near Iggesund → near Sundsvall |
| February | −2.4 | 20% | 12% | near Iggesund → near Sundsvall |
| March | −1.9 | 16% | 10% | either |
| April | −0.2 | 10% | 10% | either |
| May | −0.9 | 10% | 8% | either |
| June | −1.4 | 10% | 7% | either |
| July | −1.6 | 11% | 7% | either |
| August | −2.8 | 15% | 7% | near Iggesund → near Sundsvall |
| September | −3.6 | 17% | 7% | near Iggesund → near Sundsvall |
| October | −3.3 | 21% | 9% | near Iggesund → near Sundsvall |
| November | −2.5 | 21% | 13% | near Iggesund → near Sundsvall |
| December | −3.8 | 22% | 10% | near Iggesund → near Sundsvall |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in June, km/h |
|---|---|---|
| 0–26 | S | −2.3 |
| 26–51 | SW | −2.0 |
| 51–76 | SW | −1.2 |
| 76–101 | SW | −0.1 |
| 101–105 | S | −1.0 |
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.