Tailwind Atlas

EuroVelo 13 – Iron Curtain Trail (Estonia), stage 5: Haapsalu → near Käina

On stage 5 (Haapsalu → near Käina, 116 km) the best month is June: 80% of days were dry with highs of 10–30 °C, and riding near Käina → Haapsalu meant an average tailwind of 3.7 km/h (ERA5 2006–2025, 9:00–18:00).

ERA5 2006–2025 · OpenStreetMap · Methodology and sources

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

116 kmLength
June, September (peak June)Best months
near Käina → HaapsaluBetter direction in the best month
3.7 km/hAverage tailwind in the best month
80%Dry days with 10–30 °C
June · 80%Best summer month
Start: Haapsalu · Finish: near Käina · Route geometry: OpenStreetMap / Waymarked Trails

Weather by month

MonthGood daysRain days ≥ 1 mmRain, mmAvg highDays ≥ 30 °CDays < 10 °CDaylight, h
January0%17%470 °C0%100%6.9 †
February0%18%360 °C0%100%9.2 †
March5%16%323 °C0%95%11.6
April30%15%339 °C0%68%14.3
May73%15%3415 °C0%16%16.9
June80%19%5619 °C1%1%18.4
July75%23%6322 °C2%0%17.8
August73%26%7821 °C1%0%15.4
September78%21%5416 °C0%2%12.7
October46%23%6110 °C0%39%10.1 †
November7%20%526 °C0%90%7.6 †
December0%19%463 °C0%99%6.2 †

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 Haapsalu → near Käina, km/hHeadwind > 15 km/h, Haapsalu → near KäinaHeadwind > 15 km/h, near Käina → HaapsaluBetter way
January−3.124%13%near Käina → Haapsalu
February−2.521%11%near Käina → Haapsalu
March−3.123%12%near Käina → Haapsalu
April−2.319%11%near Käina → Haapsalu
May−1.916%9%either
June−3.721%8%near Käina → Haapsalu
July−3.219%8%near Käina → Haapsalu
August−3.721%8%near Käina → Haapsalu
September−3.724%10%near Käina → Haapsalu
October−4.125%12%near Käina → Haapsalu
November−3.624%11%near Käina → Haapsalu
December−4.628%11%near Käina → Haapsalu

Along the route (sections of about 25 km)

kmHeadingTailwind in June, km/h
468–493W−6.0
493–519NW−4.8
519–544W−5.3
544–569S−2.2
569–584S+2.2

Other stages

  1. Narva → Kunda 122 km
  2. Kunda → Loksa 102 km
  3. Loksa → Haabersti 96 km
  4. Haabersti → Haapsalu 148 km
  5. Haapsalu → near Käina 116 km
  6. near Käina → near Kuressaare 116 km
  7. near Kuressaare → Orissaare 117 km
  8. Orissaare → Pärnu 154 km
  9. Pärnu → Ikla 69 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.