Detailed cycling weather forecast for Timmelsjoch. See wind direction, temperature and rain along the entire climb and descent.

• The Timmelsjoch High Alpine Road typically opens late May → early/mid June and closes mid → late October, depending on snow clearance and weather each year. 
• Snow clearance work begins in April, and snow depths at the pass can reach up to 10 meters in spring. 

• Generally 07:00 – 20:00 each day. Night riding isn’t allowed. 

Exact opening/closing dates vary every year — final decisions are made shortly before the season starts based on snow/weather conditions. Always check official road status before planning. 

• Summer (Jun–Aug):
  • Warm in the valleys, but near the pass summit temperatures can be cool (5–15 °C) even in July/August.
  • Sudden rainstorms, cold winds, and fog can develop quickly (typical for high alpine terrain).
  • Snow patches often remain at high elevation well into summer. 

• Late May / June: still cold, possible snow and icy sections early in the season. 
• September / October: weather cools fast; snow can return suddenly even if valleys are mild. 

• Temperature range: ~5 °C at the top in shoulder months; sometimes below zero at night.
• Wind chill: can make it feel colder, especially on the climb and at altitude.
• Rain & storms: frequent afternoon thunderstorms in summer.
• Rapid change: weather can shift from sunny to stormy within an hour — typical alpine unpredictability.

• Long, steep climb: ~29 km from St. Leonhard (~672 m) to summit (~2474 m) with ~1800 m elevation gain — demanding even for fit cyclists. 
• High altitude: less oxygen, cooler temps.
• Road conditions: asphalt, narrow stretches, may still have gravel and damp patches early/late in the season.

• Layers: thermal base, windproof jacket — even in summer.
• Rain gear: essential; showers and thunderstorms common.
• Lights: required for cyclists (road rules specify lights). 
• Check weather forecast each morning before departing; conditions change rapidly.
• Plan start early: maximize daylight and better weather window.