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

• Late May to mid/late October — most years the road over Cormet de Roselend is open for cycling between end of May / early June and mid‑October. 
• A specific example: one source lists 1 June to 31 October as daily open dates. 
• Local info points to open generally from end of May to mid‑October. 

• The pass is closed in winter because of snow, ice, and unsafe road conditions. It remains impassable from late fall (often by late October/early November) until spring snow clearance. 

Takeaway: The cycling season window typically runs June–October, with the core of reliable access during June through September. Outside of this (especially November–May), the road is not suitable for cycling due to snow and closures. 

• Daytime temps: generally mild to cool; in valleys much warmer, but summit temperatures often stay cool (~10–15 °C) even in summer. 
• Weather volatility: sunny spells can suddenly turn to rain or storms; wind can be strong. 
• Snow risk: rare in summer, but cold snaps or hailstorms at highest points can occur (and have in years of TDF climbs). 
• Best for cycling: June through September, with morning starts helping avoid afternoon thunderstorms.

• Cooling temps: daytime cools further; summit may feel quite chilly.
• Increasing chance of rain and early snow (especially late Oct).
• Shorter days limit riding hours.

• Snow and ice dominate. Roads are typically closed all winter. 
• Even if the road surface is bare at lower elevations by late spring, snow at higher points can block access.

• Temperatures can be much lower near the summit than in the valleys, even in summer. 
• Wind and weather changes are common; showers or storms can come with little notice. 

• Pack a light waterproof jacket, windproof layer, and warm arm/leg warmers for unexpected chill or rain. 
• Strong winds on exposed ridges can make descents cold even after sunny ascents.

• June–September: most reliable weather and snow‑free roads.
• Early June & late September–October: cooler and more uncertain; check local road opening info before planning.

• Open for cycling: typically June through October (peak access mid‑June to September). 
• Closed: winter months due to snow & hazards (roughly November–May). 
• Weather: mild but changeable in summer, often cool at the summit, and quickly shifting — bring layers and rain/wind protection.