What are the cycling conditions like in Petit Saint Bernard Pass?

🚴♂️ Opening & Seasonal Access 📅 Typical Opening Dates The road over the Petit Saint‑Bernard is generally open to motor vehicles and cyclists from late May or early June until October — exact dates depend on snow conditions each year . One source shows open from about 1 June to 31 October (2026) , closed otherwise (late fall through spring). In some years, early or late closures can happen due to weather or road works — in 2025 it closed early on 22 September for maintenance. ✔️ For cyclists: plan your ride between June and October for the best chance the pass is clear of snow and open. Outside that, the road will be officially closed and unsafe. 🌦️ Weather Conditions to Expect 🏔️ Alpine Climate Characteristics At ~2188 m , the weather is mountain weather — significantly cooler and more changeable than in valleys: Temperature ranges (approx.) at Saint‑Bernard area: June–August: 10–22 °C daytime. September: ~9–18 °C. Spring / Autumn: can be much colder, with freezing possible. Snow can persist around the pass even after it’s opened, and snow showers are possible even in July . Expect rapid weather changes , including sudden rain, wind, fog and lower visibility — typical for high Alpine passes. 🌧️ Typical Summer Weather (Cycling Season) Summer (June‑August): Best cycling season — still cool at top, warmer at base; afternoons sometimes bring thunderstorms (common in mountains). September: Usually mild, but cooling quickly and shorter daylight. 🚴 Cyclist‑Specific Conditions 🧗♂️ Road & Traffic Once open, the pass is regularly cleared and maintained , though snowbanks may remain early season near summit. Summer sees tourist traffic , but morning rides avoid most cars. After closure, the road is not safe for cycling — snow, ice, and lack of maintenance make it dangerous. 🛠️ Preparation Tips Clothing: Windproof layer, thermal arm/leg warmers — temps drop near summit. Rain gear: Mandatory — afternoon showers/thunderstorms often develop quickly. Timing: Ride early morning — good weather window + less traffic. ⛰️ Risks to Keep in Mind Snow patches can linger near summit early and late season. Storms common in afternoon — risk of flash weather changes. Temperature drop: ~10 °C difference or more between valley and summit. 📌 Short Summary for Cyclists Best riding window: 👉 June through October — road usually open and plowed. Weather you’ll see: Cool summit temperatures , even summer — often 10–15 °C at top. Rain and storms possible nearly every summer day; snow can still appear near opening. Advice: 🚴 Ride early, bring layers and rain gear, check local road opening status before planning. Advance info from local tourism or official road sites (e.g., savoie‑routes.fr ) is important because dates shift year‑to‑year.

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Detailed cycling weather forecast for Petit Saint Bernard Pass. See wind direction, temperature and rain along the entire climb and descent.

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Pass Information

2,188m

Elevation

Current status: unknown

Opening Period: Wintersperre

Current Conditions

Could not reliably identify pass 'Col du Petit St. Bernard' in Savoie external list.

Wed

11 Mar

ac_unit

Snow showers

06:52 — 18:32

0° / -3°

Precipitation 7 mm

Humidity 92 %

🚴‍♂️ Opening & Seasonal Access

📅 Typical Opening Dates

The road over the Petit Saint‑Bernard is generally open to motor vehicles and cyclists from late May or early June until October — exact dates depend on snow conditions each year.
One source shows open from about 1 June to 31 October (2026), closed otherwise (late fall through spring).
In some years, early or late closures can happen due to weather or road works — in 2025 it closed early on 22 September for maintenance.

✔️ For cyclists: plan your ride between June and October for the best chance the pass is clear of snow and open. Outside that, the road will be officially closed and unsafe.

🌦️ Weather Conditions to Expect

🏔️ Alpine Climate Characteristics

At ~2188 m, the weather is mountain weather — significantly cooler and more changeable than in valleys:

Temperature ranges (approx.) at Saint‑Bernard area:
- June–August: 10–22 °C daytime.
- September: ~9–18 °C.
- Spring / Autumn: can be much colder, with freezing possible.
Snow can persist around the pass even after it’s opened, and snow showers are possible even in July.
Expect rapid weather changes, including sudden rain, wind, fog and lower visibility — typical for high Alpine passes.

🌧️ Typical Summer Weather (Cycling Season)

Summer (June‑August): Best cycling season — still cool at top, warmer at base; afternoons sometimes bring thunderstorms (common in mountains).
September: Usually mild, but cooling quickly and shorter daylight.

🚴 Cyclist‑Specific Conditions

🧗‍♂️ Road & Traffic

Once open, the pass is regularly cleared and maintained, though snowbanks may remain early season near summit.
Summer sees tourist traffic, but morning rides avoid most cars.
After closure, the road is not safe for cycling — snow, ice, and lack of maintenance make it dangerous.

🛠️ Preparation Tips

Clothing: Windproof layer, thermal arm/leg warmers — temps drop near summit.
Rain gear: Mandatory — afternoon showers/thunderstorms often develop quickly.
Timing: Ride early morning — good weather window + less traffic.

⛰️ Risks to Keep in Mind

Snow patches can linger near summit early and late season.
Storms common in afternoon — risk of flash weather changes.
Temperature drop: ~10 °C difference or more between valley and summit.

📌 Short Summary for Cyclists

Best riding window:
👉 June through October — road usually open and plowed.

Weather you’ll see:

Cool summit temperatures, even summer — often 10–15 °C at top.
Rain and storms possible nearly every summer day; snow can still appear near opening.

Advice:
🚴 Ride early, bring layers and rain gear, check local road opening status before planning. Advance info from local tourism or official road sites (e.g., savoie‑routes.fr) is important because dates shift year‑to‑year.

Check weather on own route

Location

Weather Forecast

Next 7 Days

Wed

11 Mar

ac_unit

Snow showers

06:52 — 18:32

0° / -3°

Precipitation 7 mm

Humidity 92 %

Thu

12 Mar

ac_unit

Snow

06:50 — 18:33

1° / -5°

Precipitation 5 mm

Humidity 95 %

Fri

13 Mar

foggy

Fog

06:48 — 18:35

2° / -5°

Precipitation 0 mm

Humidity 100 %

Sat

14 Mar

ac_unit

Snow

06:46 — 18:36

-1° / -8°

Precipitation 23 mm

Humidity 90 %

Sun

15 Mar

ac_unit

Snow showers

06:44 — 18:37

-2° / -8°

Precipitation 9 mm

Humidity 100 %

Mon

16 Mar

foggy

Fog

06:42 — 18:39

-1° / -6°

Precipitation 0 mm

Humidity 100 %

Tue

17 Mar

foggy

Fog

06:41 — 18:40

4° / -4°

Precipitation 0 mm

Humidity 100 %

Climate Overview

Month	Temp Day	Temp Night	Sunny Days	Sun Hours	Rain Days	Precipitation	Humidity	UV Index	Day Length
Jan	-3°C	-12°C	17	6.0h	22	226 mm	75 %	2	9h 10m
Feb	-1°C	-11°C	23	7.9h	12	42 mm	73 %	3	10h 24m
Mar	0°C	-10°C	27	9.7h	17	57 mm	70 %	4	11h 56m
Apr	4°C	-5°C	27	10.6h	12	180 mm	68 %	5	13h 33m
May	6°C	-3°C	29	11.8h	16	81 mm	65 %	6	14h 56m
Jun	15°C	3°C	30	13.9h	16	66 mm	67 %	7	15h 38m
Jul	14°C	4°C	31	13.3h	23	84 mm	66 %	8	15h 16m
Aug	16°C	5°C	29	12.4h	14	62 mm	68 %	7	14h 3m
Sep	11°C	0°C	25	9.6h	17	117 mm	70 %	5	12h 31m
Oct	6°C	-3°C	22	7.5h	13	224 mm	72 %	4	10h 54m
Nov	0°C	-11°C	21	6.6h	11	122 mm	76 %	2	9h 29m
Dec	-1°C	-10°C	20	6.3h	17	58 mm	77 %	2	8h 45m