Tailwind Atlas

Cykelspåret (2): which way and when to ride

The best month for Cykelspåret (2) is September: 78% of days were dry with highs of 10–30 °C. In September, riding near Bromölla → Johannishus meant an average tailwind of 4.1 km/h (ERA5 2006–2025, daytime 9:00–18:00).

ERA5 2006–2025 · OpenStreetMap · Methodology and sources

109 kmLength
June, September (peak September)Best months
near Bromölla → JohannishusBetter direction in the best month
4.1 km/hAverage tailwind in the best month
78%Dry days with 10–30 °C
June · 77%Best summer month
Start: Johannishus · Finish: near Bromölla · Route geometry: OpenStreetMap / Waymarked Trails

Weather by month

MonthGood daysRain days ≥ 1 mmRain, mmAvg highDays ≥ 30 °CDays < 10 °CDaylight, h
January0%23%612 °C0%100%7.5 †
February1%19%443 °C0%99%9.5 †
March9%17%385 °C0%91%11.6
April45%15%3210 °C0%52%14.1
May74%22%4715 °C0%9%16.3
June77%23%5819 °C0%0%17.6
July70%30%7921 °C0%0%17.1
August72%28%7220 °C0%0%15.1
September78%22%5017 °C0%0%12.6
October58%20%6712 °C0%27%10.3 †
November14%22%577 °C0%83%8.1 †
December1%25%584 °C0%98%7.0 †

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 Johannishus → near Bromölla, km/hHeadwind > 15 km/h, Johannishus → near BromöllaHeadwind > 15 km/h, near Bromölla → JohannishusBetter way
January−4.927%11%near Bromölla → Johannishus
February−3.723%12%near Bromölla → Johannishus
March−3.321%12%near Bromölla → Johannishus
April−2.419%11%near Bromölla → Johannishus
May−2.317%11%near Bromölla → Johannishus
June−5.423%7%near Bromölla → Johannishus
July−6.223%5%near Bromölla → Johannishus
August−5.522%5%near Bromölla → Johannishus
September−4.125%11%near Bromölla → Johannishus
October−4.425%12%near Bromölla → Johannishus
November−3.823%11%near Bromölla → Johannishus
December−6.430%7%near Bromölla → Johannishus

Along the route (sections of about 25 km)

kmHeadingTailwind in September, km/h
0–25W−4.7
25–50W−3.8
50–75W−3.6
75–101SW−4.4
101–109W−4.3

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