Tailwind Atlas

EuroVelo 13 – Iron Curtain Trail (Finland), stage 11: near Tuupovaara → Kesälahti

On stage 11 (near Tuupovaara → Kesälahti, 125 km) the best month is August: 68% of days were dry with highs of 10–30 °C; the wind barely favours either direction (1.8 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)

125 kmLength
June, August (peak August)Best months
eitherBetter direction in the best month
1.8 km/hAverage tailwind in the best month
68%Dry days with 10–30 °C
August · 68%Best summer month
Start: near Tuupovaara · Finish: Kesälahti · Route geometry: OpenStreetMap / Waymarked Trails

Weather by month

MonthGood daysRain days ≥ 1 mmRain, mmAvg highDays ≥ 30 °CDays < 10 °CDaylight, h
January0%21%49-6 °C0%100%6.0 †
February0%20%40-5 °C0%100%8.7 †
March2%17%390 °C0%98%11.5
April19%18%397 °C0%80%14.7
May61%24%5614 °C0%22%17.7
June67%32%8019 °C1%3%19.7
July64%33%9221 °C2%0%18.8
August68%31%8719 °C0%0%16.0
September60%27%6814 °C0%18%12.8
October14%25%656 °C0%80%9.8 †
November1%24%591 °C0%99%6.9 †
December0%26%61-3 °C0%100%5.2 †

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 Tuupovaara → Kesälahti, km/hHeadwind > 15 km/h, near Tuupovaara → KesälahtiHeadwind > 15 km/h, Kesälahti → near TuupovaaraBetter way
January−1.67%3%either
February−1.66%2%either
March−2.48%3%Kesälahti → near Tuupovaara
April−1.66%4%either
May−1.56%3%either
June−2.26%3%Kesälahti → near Tuupovaara
July−1.13%3%either
August−1.85%2%either
September−2.37%3%Kesälahti → near Tuupovaara
October−2.89%3%Kesälahti → near Tuupovaara
November−2.47%4%Kesälahti → near Tuupovaara
December−2.99%3%Kesälahti → near Tuupovaara

Along the route (sections of about 25 km)

kmHeadingTailwind in August, km/h
1,253–1,278SW−2.6
1,278–1,304SW−2.4
1,304–1,329W−1.6
1,329–1,354W−1.7
1,354–1,378SE−0.9

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.