Tailwind Atlas

EuroVelo 13 – Iron Curtain Trail (Finland), stage 6: Kuusamo → near Kostomuksha

On stage 6 (Kuusamo → near Kostomuksha, 119 km) the best month is July: 66% of days were dry with highs of 10–30 °C; the wind barely favours either direction (0.3 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)

119 kmLength
July–August (peak July)Best months
eitherBetter direction in the best month
0.3 km/hAverage tailwind in the best month
66%Dry days with 10–30 °C
July · 66%Best summer month
Start: Kuusamo · Finish: near Kostomuksha · Route geometry: OpenStreetMap / Waymarked Trails

Weather by month

MonthGood daysRain days ≥ 1 mmRain, mmAvg highDays ≥ 30 °CDays < 10 °CDaylight, h
January0%17%37-8 °C0%100%4.7 †
February0%15%28-7 °C0%100%8.2 †
March0%14%31-2 °C0%100%11.4
April6%18%374 °C0%94%15.1
May44%26%5311 °C0%45%18.9
June62%31%7116 °C0%11%22.7
July66%33%8719 °C0%2%20.6
August63%33%8617 °C0%4%16.7
September47%24%6811 °C0%38%12.9
October2%22%614 °C0%97%9.4 †
November0%20%48-2 °C0%100%5.8 †
December0%21%48-5 °C0%100%3.3 †

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 Kuusamo → near Kostomuksha, km/hHeadwind > 15 km/h, Kuusamo → near KostomukshaHeadwind > 15 km/h, near Kostomuksha → KuusamoBetter way
January−1.56%3%either
February−2.26%3%near Kostomuksha → Kuusamo
March−0.65%5%either
April+0.44%5%either
May−0.24%4%either
June+0.34%5%either
July−0.33%3%either
August−1.64%3%either
September−1.67%4%either
October−1.57%3%either
November−2.36%3%near Kostomuksha → Kuusamo
December−2.57%3%near Kostomuksha → Kuusamo

Along the route (sections of about 25 km)

kmHeadingTailwind in July, km/h
658–683S−0.4
683–708SE−0.1
708–733S−0.3
733–759S−0.5
759–777S−0.4

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.