Tailwind Atlas

EuroVelo 13 – Iron Curtain Trail (Finland), stage 9: near Lieksa → near Lieksa

On stage 9 (near Lieksa → near Lieksa, 120 km) the best month is August: 69% of days were dry with highs of 10–30 °C; the wind barely favours either direction (0.4 km/h on average; ERA5 2006–2025, 9:00–18:00).

ERA5 2006–2025 · OpenStreetMap · Methodology and sources

← EuroVelo 13 – Iron Curtain Trail (Finland) (Whole route)

120 kmLength
June, August (peak August)Best months
eitherBetter direction in the best month
0.4 km/hAverage tailwind in the best month
69%Dry days with 10–30 °C
August · 69%Best summer month
Start: near Lieksa · Finish: near Lieksa · Route geometry: OpenStreetMap / Waymarked Trails

Weather by month

MonthGood daysRain days ≥ 1 mmRain, mmAvg highDays ≥ 30 °CDays < 10 °CDaylight, h
January0%19%46-7 °C0%100%5.6 †
February0%19%37-6 °C0%100%8.5 †
March1%18%400 °C0%99%11.5
April16%19%416 °C0%83%14.8
May55%25%5613 °C0%30%18.1
June68%30%7718 °C1%4%20.4
July64%35%9521 °C1%0%19.3
August69%31%8819 °C0%1%16.2
September55%27%7313 °C0%25%12.8
October7%25%665 °C0%89%9.6 †
November0%24%590 °C0%100%6.5 †
December0%25%58-4 °C0%100%4.6 †

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 Lieksa → near Lieksa, km/hHeadwind > 15 km/h, near Lieksa → near LieksaHeadwind > 15 km/h, near Lieksa → near LieksaBetter way
January−1.26%3%either
February−1.56%3%either
March+0.35%6%either
April+0.64%5%either
May+0.54%4%either
June+1.33%6%either
July+0.33%2%either
August−0.44%3%either
September−0.25%6%either
October−0.16%5%either
November−1.36%4%either
December−1.57%5%either

Along the route (sections of about 25 km)

kmHeadingTailwind in August, km/h
1,015–1,040S−1.7
1,040–1,065S−2.3
1,065–1,090E+1.3
1,090–1,115E+1.2
1,115–1,135SE−0.2

Other stages

  1. Näätämö → Inari 142 km
  2. Inari → near Sodankylä 120 km
  3. near Sodankylä → Pyhäjärvi 137 km
  4. Pyhäjärvi → Salla 142 km
  5. Salla → Kuusamo 119 km
  6. Kuusamo → near Kostomuksha 119 km
  7. near Kostomuksha → near Kostomuksha 119 km
  8. near Kostomuksha → near Lieksa 119 km
  9. near Lieksa → near Lieksa 120 km
  10. near Lieksa → near Tuupovaara 119 km
  11. near Tuupovaara → Kesälahti 125 km
  12. Kesälahti → Imatra 142 km
  13. Imatra → Vaalimaa 146 km

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.