Tailwind Atlas

EuroVelo 12 - North Sea Cycle Route - part Nederland, stage 2: near Dokkum → Harlingen

On stage 2 (near Dokkum → Harlingen, 104 km) the best month is June: 77% of days were dry with highs of 10–30 °C, and riding Harlingen → near Dokkum meant an average tailwind of 4.1 km/h (ERA5 2006–2025, 9:00–18:00).

ERA5 2006–2025 · OpenStreetMap · Methodology and sources

← EuroVelo 12 - North Sea Cycle Route - part Nederland (Whole route)

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

Weather by month

MonthGood daysRain days ≥ 1 mmRain, mmAvg highDays ≥ 30 °CDays < 10 °CDaylight, h
January3%25%675 °C0%93%8.0 †
February7%23%556 °C0%92%9.7 †
March27%19%478 °C0%69%11.7
April55%20%3912 °C0%34%13.9
May72%24%6116 °C0%5%15.8
June77%22%6819 °C0%0%17.0
July68%30%8821 °C2%0%16.5
August71%28%8621 °C2%0%14.8
September77%23%7018 °C0%0%12.6
October71%24%7814 °C0%5%10.4 †
November32%26%679 °C0%54%8.5 †
December8%24%707 °C0%86%7.5 †

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 Dokkum → Harlingen, km/hHeadwind > 15 km/h, near Dokkum → HarlingenHeadwind > 15 km/h, Harlingen → near DokkumBetter way
January−9.740%8%Harlingen → near Dokkum
February−6.935%13%Harlingen → near Dokkum
March−4.530%15%Harlingen → near Dokkum
April−1.222%18%either
May−1.323%19%either
June−4.127%11%Harlingen → near Dokkum
July−7.534%6%Harlingen → near Dokkum
August−7.734%6%Harlingen → near Dokkum
September−6.331%9%Harlingen → near Dokkum
October−7.434%8%Harlingen → near Dokkum
November−7.934%7%Harlingen → near Dokkum
December−10.641%7%Harlingen → near Dokkum

Along the route (sections of about 25 km)

kmHeadingTailwind in June, km/h
124–149W−4.5
149–174W−5.8
174–199SW−4.2
199–225SW−2.6
225–229SW+1.1

Other stages

  1. Bunde → near Dokkum 124 km
  2. near Dokkum → Harlingen 104 km
  3. Harlingen → Beverwijk 146 km
  4. Beverwijk → Goedereede 126 km
  5. Goedereede → near Knokke-Heist 116 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.