Back to Alpine Passes

Detailed cycling weather forecast for Col de La Cayolle. See wind direction, temperature and rain along the entire climb and descent.

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Pass Information

2,327m
Elevation
Current status: open
Opening Period: Ganzjährig offen
Mon
13 Jul
cloud
Partly cloudy
N/A N/A
22° / 10°
Precipitation 0 mm
Humidity 86 %

🚧 Opening / closing season
  • The pass is closed in winter due to snow cover and typically accessible only about half of the year
  • Typical opening window: mid-June → Oct/Nov (snow dependent)
  • Example real date: in 2025 it opened April 25 after winter closure. 
👉 Translation for planning:
  • ❄️ Nov–May: usually impassable
  • 🌤️ Jun–Sep: main riding season
  • 🍂 Oct: unpredictable / may close anytime
🌄 Seasonal riding expectations
❄️ Winter (Nov–May)
  • Road generally closed + snow covered
  • Avalanche and ice risk
  • Not rideable
🌱 Early season (Jun)
  • Road may open recently
  • Snow walls beside road possible
  • Cold summit despite warm valleys
☀️ Peak season (Jul–Aug)
  • Most reliable access
  • Summit temps often ~15–18 °C while valleys can be hot
  • Thunderstorms possible afternoons
  • Long daylight hours (~15 h in June) 
🍁 Late season (Sep–Oct)
  • Crisp air, clear visibility
  • Nights near freezing
  • Early snowstorms can close pass suddenly
🌬️ Wind & weather behavior
  • High altitude → fast weather changes
  • Exposed summit can feel much colder than forecast
  • Humidity ~65–70 % most of summer 
🚴 Road & terrain characteristics
  • Length ~25 km with varied landscapes and tunnels 
  • One side wide and flowing, the other narrow with bridges and rock tunnels 
  • Very little space at summit for stopping 

🧭 Short summary

Best time: July–September
Usually open: mid-June → early October
Closed: winter due to snow
Expect: cool summit temps, rapid weather changes, possible storms even in summer, and cold mornings outside peak season.

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Location


Weather Forecast

Next 7 Days

Mon
13 Jul
cloud
Partly cloudy
N/A N/A
22° / 10°
Precipitation 0 mm
Humidity 86 %
Tue
14 Jul
dark_mode
Clear sky
N/A N/A
22° /
Precipitation 0 mm
Humidity 82 %
Wed
15 Jul
cloud
Heavy rain
N/A N/A
22° / 12°
Precipitation 1 mm
Humidity 72 %
Thu
16 Jul
water_drop
Light rain
N/A N/A
22° / 11°
Precipitation 1 mm
Humidity 82 %
Fri
17 Jul
water_drop
Light rain
N/A N/A
19° / 12°
Precipitation 5 mm
Humidity 69 %
Sat
18 Jul
dark_mode
Clear sky
N/A N/A
18° / 10°
Precipitation 0 mm
Humidity 96 %
Sun
19 Jul
dark_mode
Mainly clear
N/A N/A
19° /
Precipitation 0 mm
Humidity 90 %

Climate Overview

Climate Overview

Month
Day Temperature Temp Day
Night Temperature Temp Night
Sunny Days Sunny Days
Sun Hours Sun Hours
Rain Days Rain Days
Precipitation Precipitation
Humidity Humidity
UV Index UV Index
Day Length Day Length
Jan -2°C -12°C 20 6.2h 21 157 mm 75 % 2 9h 18m
Feb -1°C -11°C 21 8.1h 9 16 mm 73 % 3 10h 29m
Mar 0°C -9°C 26 9.4h 12 129 mm 70 % 4 11h 57m
Apr 3°C -6°C 26 10.4h 14 122 mm 68 % 5 13h 29m
May 9°C -2°C 31 12.6h 23 116 mm 65 % 6 14h 47m
Jun 18°C 7°C 30 14.1h 20 45 mm 67 % 7 15h 27m
Jul 17°C 5°C 31 14.2h 14 53 mm 66 % 8 15h 7m
Aug 18°C 6°C 28 12.3h 12 54 mm 68 % 7 13h 57m
Sep 12°C 1°C 29 10.9h 12 47 mm 70 % 5 12h 29m
Oct 8°C -2°C 28 9.1h 13 99 mm 72 % 4 10h 58m
Nov 2°C -7°C 24 7.3h 12 101 mm 76 % 2 9h 37m
Dec -1°C -10°C 21 6.3h 12 77 mm 77 % 2 8h 55m