Tailwind Atlas

Sverigeleden (16): which way and when to ride

The best month for Sverigeleden (16) is September: 72% of days were dry with highs of 10–30 °C. In September, riding Karlstad → near Borlänge meant an average tailwind of 3.0 km/h (ERA5 2006–2025, daytime 9:00–18:00).

ERA5 2006–2025 · OpenStreetMap · Methodology and sources

231 kmLength
June, September (peak September)Best months
Karlstad → near BorlängeBetter direction in the best month
3.0 km/hAverage tailwind in the best month
72%Dry days with 10–30 °C
June · 70%Best summer month
Start: near Borlänge · Finish: Karlstad · Route geometry: OpenStreetMap / Waymarked Trails

Weather by month

MonthGood daysRain days ≥ 1 mmRain, mmAvg highDays ≥ 30 °CDays < 10 °CDaylight, h
January0%20%55-2 °C0%100%6.7 †
February0%16%400 °C0%100%9.0 †
March9%14%374 °C0%91%11.6
April40%19%3910 °C0%57%14.5
May66%27%6915 °C0%15%17.1
June70%30%8219 °C0%1%18.8
July63%36%10721 °C1%0%18.1
August63%37%10819 °C0%0%15.6
September72%24%6615 °C0%6%12.7
October30%21%679 °C0%62%10.0 †
November3%22%563 °C0%95%7.4 †
December0%21%560 °C0%100%5.9 †

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

MonthWind near Borlänge → Karlstad, km/hHeadwind > 15 km/h, near Borlänge → KarlstadHeadwind > 15 km/h, Karlstad → near BorlängeBetter way
January−2.110%3%Karlstad → near Borlänge
February−2.28%2%Karlstad → near Borlänge
March−1.99%3%either
April−1.17%4%either
May−1.67%4%either
June−2.87%3%Karlstad → near Borlänge
July−2.76%2%Karlstad → near Borlänge
August−3.27%2%Karlstad → near Borlänge
September−3.09%2%Karlstad → near Borlänge
October−2.810%4%Karlstad → near Borlänge
November−2.09%4%Karlstad → near Borlänge
December−2.911%2%Karlstad → near Borlänge

Along the route (sections of about 25 km)

kmHeadingTailwind in September, km/h
0–25SW−3.3
25–50SW−3.3
50–76W−2.9
76–101W−3.0
101–126SW−3.2
126–152W−1.7
152–177S−3.2
177–203S−3.3
203–231S−3.2

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