What are the cycling conditions like in Grimselpass?

🚴♂️ Grimselpass — Key Info for Cyclists 🗓️ When the Pass Is Open Seasonal opening: The Grimsel Pass road is seasonal , typically open from late May / early June through October , depending on snow conditions and weather. Official winter closure: Most years the pass closes around October and stays closed through May due to snow at high altitude (2,164 m). Exact dates vary: Opening/closing dates change yearly based on snowfall and melt — in past years openings were mostly mid‑June to early November and closures started in October/November . Weather‑dependent: Even in the opening season, sudden snow or storms can briefly close the pass or make conditions challenging. 🌦️ Weather & Road Conditions to Expect 🌡️ Temperature At the summit (~2164 m) it stays cool even in summer . Daily highs often range below 15 °C , especially early/late season. ❄️ Snow & Precipitation Snow can fall anytime above ~2000 m — even in summer — especially in cooler spells. During early/late season you may see snow patches near the summit and potentially icy surfaces early in the morning or after rain. ☁️ Wind & Storms Alpine weather changes quickly — clear skies can turn to wind, rain, or fog on a climb. Always check local forecasts before riding. 🚴♂️ Road Surface The pass road is paved and maintained , but watch out for wet patches , runoff water from melting snow, and debris after storms. 🧗♂️ Cycling Considerations Gradient & length: The climb is long and moderate (~38 km from Gletsch to Meiringen), averaging around ~5–7 % with steeper sections. Gear & clothing: Bring layers — vests or wind jackets are useful for cool summit conditions; gloves are helpful on descents. Time of day: Starting earlier helps avoid afternoon storms and gives more predictable conditions on high roads. Traffic: Summers can be busy with cars and motorcycles — plan your ride on quieter days/times if possible. 🧠 Quick Summary Open season: Generally June – October , with dates varying based on snow melt and weather. Closed: Typically late October through May/early June due to snow. Expect: Cool temperatures at altitude, rapid weather changes , possible snow/ice early or late in season, and classic alpine conditions that make the climb spectacular but sometimes challenging. Best months for cyclists: July through September for the most stable weather and fully open roads.

Back to Alpine Passes

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

✗ Closed Bern/Valais, CH

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Pass Information

2,165m

Elevation

11.0%

Max Gradient

24.0 km

Length

Current status: closed

Opening Period: Wintersperre

Current Conditions

Guttannen - Gletsch

Wed

11 Mar

ac_unit

Snow showers

06:47 — 18:26

0° / -3°

Precipitation 4 mm

Humidity 100 %

🚴‍♂️ Grimselpass — Key Info for Cyclists

🗓️ When the Pass Is Open

Seasonal opening: The Grimsel Pass road is seasonal, typically open from late May / early June through October, depending on snow conditions and weather.
Official winter closure: Most years the pass closes around October and stays closed through May due to snow at high altitude (2,164 m).
Exact dates vary: Opening/closing dates change yearly based on snowfall and melt — in past years openings were mostly mid‑June to early November and closures started in October/November.
Weather‑dependent: Even in the opening season, sudden snow or storms can briefly close the pass or make conditions challenging.

🌦️ Weather & Road Conditions to Expect

🌡️ Temperature

At the summit (~2164 m) it stays cool even in summer. Daily highs often range below 15 °C, especially early/late season.

❄️ Snow & Precipitation

Snow can fall anytime above ~2000 m — even in summer — especially in cooler spells.
During early/late season you may see snow patches near the summit and potentially icy surfaces early in the morning or after rain.

☁️ Wind & Storms

Alpine weather changes quickly — clear skies can turn to wind, rain, or fog on a climb. Always check local forecasts before riding.

🚴‍♂️ Road Surface

The pass road is paved and maintained, but watch out for wet patches, runoff water from melting snow, and debris after storms.

🧗‍♂️ Cycling Considerations

Gradient & length: The climb is long and moderate (~38 km from Gletsch to Meiringen), averaging around ~5–7 % with steeper sections.
Gear & clothing: Bring layers — vests or wind jackets are useful for cool summit conditions; gloves are helpful on descents.
Time of day: Starting earlier helps avoid afternoon storms and gives more predictable conditions on high roads.
Traffic: Summers can be busy with cars and motorcycles — plan your ride on quieter days/times if possible.

🧠 Quick Summary

Open season: Generally June – October, with dates varying based on snow melt and weather.
Closed: Typically late October through May/early June due to snow.
Expect: Cool temperatures at altitude, rapid weather changes, possible snow/ice early or late in season, and classic alpine conditions that make the climb spectacular but sometimes challenging.

Best months for cyclists: July through September for the most stable weather and fully open roads.

Check weather on own route

Location

Weather Forecast

Next 7 Days

Wed

11 Mar

ac_unit

Snow showers

06:47 — 18:26

0° / -3°

Precipitation 4 mm

Humidity 100 %

Thu

12 Mar

ac_unit

Snow

06:45 — 18:27

0° / -4°

Precipitation 4 mm

Humidity 100 %

Fri

13 Mar

cloud

Overcast

06:43 — 18:28

1° / -5°

Precipitation 0 mm

Humidity 85 %

Sat

14 Mar

ac_unit

Snow showers

06:41 — 18:30

-2° / -9°

Precipitation 47 mm

Humidity 100 %

Sun

15 Mar

ac_unit

Snow showers

06:39 — 18:31

-3° / -9°

Precipitation 27 mm

Humidity 100 %

Mon

16 Mar

ac_unit

Snow showers

06:37 — 18:33

-1° / -6°

Precipitation 1 mm

Humidity 100 %

Tue

17 Mar

ac_unit

Snow

06:35 — 18:34

2° / -4°

Precipitation 0 mm

Humidity 90 %

Climate Overview

Month	Temp Day	Temp Night	Sunny Days	Sun Hours	Rain Days	Precipitation	Humidity	UV Index	Day Length
Jan	-4°C	-12°C	14	4.6h	21	144 mm	75 %	2	9h 4m
Feb	-2°C	-10°C	17	6.5h	13	44 mm	73 %	3	10h 21m
Mar	-1°C	-9°C	23	8.4h	15	87 mm	70 %	4	11h 56m
Apr	3°C	-4°C	23	10.0h	12	179 mm	68 %	5	13h 36m
May	5°C	-2°C	27	11.0h	18	108 mm	65 %	6	15h 1m
Jun	12°C	2°C	29	13.8h	10	47 mm	67 %	7	15h 45m
Jul	9°C	1°C	31	12.9h	20	113 mm	66 %	8	15h 22m
Aug	12°C	2°C	30	11.8h	12	113 mm	68 %	7	14h 7m
Sep	11°C	1°C	26	9.6h	18	205 mm	70 %	5	12h 31m
Oct	5°C	-3°C	21	7.6h	13	110 mm	72 %	4	10h 52m
Nov	-1°C	-9°C	19	6.2h	15	75 mm	76 %	2	9h 25m
Dec	-1°C	-9°C	17	4.9h	15	41 mm	77 %	2	8h 38m