Tailwind Atlas

Cykelspåret (14): which way and when to ride

The best month for Cykelspåret (14) is June: 79% of days were dry with highs of 10–30 °C. In June the wind barely favours either direction — on average 1.2 km/h along the route (ERA5 2006–2025, daytime 9:00–18:00).

ERA5 2006–2025 · OpenStreetMap · Methodology and sources

125 kmLength
JuneBest months
eitherBetter direction in the best month
1.2 km/hAverage tailwind in the best month
79%Dry days with 10–30 °C
June · 79%Best summer month
Start: near Ramvik · Finish: near Sundsvall · Route geometry: OpenStreetMap / Waymarked Trails

Weather by month

MonthGood daysRain days ≥ 1 mmRain, mmAvg highDays ≥ 30 °CDays < 10 °CDaylight, h
January0%20%58-2 °C0%100%5.9 †
February0%15%36-2 °C0%100%8.7 †
March3%14%342 °C0%97%11.5
April24%14%327 °C0%75%14.7
May62%17%4113 °C0%30%17.8
June79%20%4918 °C0%2%19.9
July75%25%7120 °C0%0%19.0
August73%27%7919 °C0%0%16.0
September71%23%6714 °C0%9%12.8
October25%21%698 °C0%70%9.7 †
November2%22%572 °C0%97%6.8 †
December0%22%620 °C0%100%5.0 †

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

MonthWind near Ramvik → near Sundsvall, km/hHeadwind > 15 km/h, near Ramvik → near SundsvallHeadwind > 15 km/h, near Sundsvall → near RamvikBetter way
January−0.812%9%either
February−0.711%8%either
March−0.810%7%either
April+0.36%8%either
May−1.18%6%either
June−1.28%6%either
July−1.58%5%either
August−2.19%5%near Sundsvall → near Ramvik
September−2.310%5%near Sundsvall → near Ramvik
October−1.510%7%either
November−0.810%9%either
December−1.112%7%either

Along the route (sections of about 25 km)

kmHeadingTailwind in June, km/h
0–25S−2.3
25–51W−0.8
51–76SW−1.1
76–102S0.0
102–125S−1.9

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.

OpenStreetMap · Waymarked Trails