Tailwind Atlas

Hanstholm - København, stage 4: Nykøbing Sjælland → København

On stage 4 (Nykøbing Sjælland → København, 87 km) the best month is September: 78% of days were dry with highs of 10–30 °C, and riding Nykøbing Sjælland → København meant an average tailwind of 2.7 km/h (ERA5 2006–2025, 9:00–18:00).

ERA5 2006–2025 · OpenStreetMap · Methodology and sources

← Hanstholm - København (Whole route)

87 kmLength
June, September (peak September)Best months
Nykøbing Sjælland → KøbenhavnBetter direction in the best month
2.7 km/hAverage tailwind in the best month
78%Dry days with 10–30 °C
June · 76%Best summer month
Start: Nykøbing Sjælland · Finish: København · Route geometry: OpenStreetMap / Waymarked Trails

Weather by month

MonthGood daysRain days ≥ 1 mmRain, mmAvg highDays ≥ 30 °CDays < 10 °CDaylight, h
January1%22%543 °C0%98%7.6 †
February2%16%414 °C0%98%9.5 †
March16%19%417 °C0%82%11.6
April55%18%3712 °C0%38%14.1
May72%25%5516 °C0%5%16.3
June76%23%6320 °C0%0%17.5
July72%27%8022 °C1%0%17.0
August70%29%8521 °C0%0%15.1
September78%22%5518 °C0%0%12.6
October65%23%6513 °C0%16%10.3 †
November21%21%498 °C0%72%8.1 †
December4%20%525 °C0%95%7.0 †

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 Nykøbing Sjælland → København, km/hHeadwind > 15 km/h, Nykøbing Sjælland → KøbenhavnHeadwind > 15 km/h, København → Nykøbing SjællandBetter way
January+3.313%22%Nykøbing Sjælland → København
February+2.514%23%Nykøbing Sjælland → København
March+3.115%23%Nykøbing Sjælland → København
April+2.915%23%Nykøbing Sjælland → København
May+2.715%23%Nykøbing Sjælland → København
June+5.49%28%Nykøbing Sjælland → København
July+5.88%27%Nykøbing Sjælland → København
August+4.19%21%Nykøbing Sjælland → København
September+2.713%23%Nykøbing Sjælland → København
October+1.813%20%either
November+1.112%17%either
December+3.710%22%Nykøbing Sjælland → København

Along the route (sections of about 25 km)

kmHeadingTailwind in September, km/h
346–371E+5.6
371–396SE+1.4
396–422SE+2.2
422–433SE+0.3

Other stages

  1. Hanstholm → Skive 104 km
  2. Skive → Århus 135 km
  3. Århus → Nykøbing Sjælland 109 km
  4. Nykøbing Sjælland → København 87 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.