Great St Bernard Pass
The Great St Bernard Pass is a mountain pass at 2469 m (Valais). Access: road; usually open juin–octobre (tunnel toute l'année). The weather above is computed at the exact pass altitude; the “Snow, wind and freezing level” section gives 7-day snowfall, gusts and the snow line — check it before crossing by car, motorbike or bike.
Climate of Great St Bernard Pass: 1991–2020 normals
In Great St Bernard Pass (2469 m), the mean annual temperature is −0.1 °C. The warmest month is August (8.5 °C on average) and the coldest February (−7.3 °C). About 2282 mm of precipitation falls per year, peaking in November (258 mm) with a minimum in September (132 mm). The sun shines for about 1596 hours a year, mostly in July (212 h). On average there are 233 frost days per year. The mean monthly maximum reaches 17.8 °C and the absolute minimum −17.5 °C.
Mean monthly precipitation (mm) — bar height relative to the wettest month.
| Month | Mean T | Abs. max | Abs. min | Precip. (mm) | Sunshine (h) | Frost days | Summer days |
|---|---|---|---|---|---|---|---|
| Jan | −6.9 °C | 2.7 °C | −17.5 °C | 241 | 55 | 31 | 0 |
| Feb | −7.3 °C | 2.6 °C | −17.5 °C | 190 | 103 | 28 | 0 |
| Mar | −5.2 °C | 4.0 °C | −15.7 °C | 192 | 158 | 31 | 0 |
| Apr | −2.6 °C | 6.1 °C | −12.2 °C | 204 | 149 | 28 | 0 |
| May | 1.5 °C | 11.0 °C | −7.0 °C | 207 | 158 | 18 | 0 |
| Jun | 5.9 °C | 16.2 °C | −3.1 °C | 146 | 189 | 7 | 0 |
| Jul | 8.4 °C | 17.8 °C | −0.6 °C | 140 | 212 | 3 | 0 |
| Aug | 8.5 °C | 17.8 °C | −1.0 °C | 136 | 202 | 2 | 0 |
| Sep | 4.6 °C | 13.9 °C | −4.2 °C | 132 | 160 | 9 | 0 |
| Oct | 1.2 °C | 10.4 °C | −8.4 °C | 194 | 124 | 18 | 0 |
| Nov | −3.6 °C | 5.9 °C | −13.4 °C | 258 | 62 | 28 | 0 |
| Dec | −6.0 °C | 3.5 °C | −16.1 °C | 243 | 24 | 31 | 0 |
| Year | −0.1 °C | 17.8 °C | −17.5 °C | 2282 | 1596 | 233 | 0 |
Source: MeteoSwiss open data (1991–2020 normals) — stations Col du Grand St-Bernard (0 km, 2472 m), Les Attelas (27 km, 2734 m), Evionnaz (37 km, 482 m), adjusted to the elevation of Great St Bernard Pass (2469 m) using a 0.55 °C/100 m lapse rate. Indicative, rounded values.
Passes & summits
- Weather Col de la Forclaz (25 km · 1527 m)
- Weather Mont-Fort (26 km · 3329 m)
- Weather Klein Matterhorn (Matterhorn Glacier Paradise) (44 km · 3883 m)
- Weather Gornergrat (49 km · 3089 m)
- Weather Col de la Croix (50 km · 1778 m)
- Weather Glacier 3000 (Scex Rouge) (54 km · 2971 m)
Nearby municipalities
- Weather Bourg-Saint-Pierre (8 km)
- Weather Liddes (14 km)
- Weather Orsières (18 km)
- Weather Sembrancher (22 km)
- Weather Trient (23 km)
- Weather Bovernier (25 km)
- Weather Val de Bagnes (25 km)
- Weather Martigny-Combe (28 km)
Passes & summits Weather Bourg-Saint-Pierre
Frequently asked questions about the weather: Great St Bernard Pass
Is the Great St Bernard Pass open?
The Great St Bernard Pass is usually accessible juin–octobre (tunnel toute l'année). The official status depends on snow and roadworks (check TCS or the canton); the snow forecast above helps anticipate closures.
How cold is it at the Great St Bernard Pass?
Expect about 12 °C less than in the lowlands (mean lapse rate 0.6 °C per 100 m). The mean annual temperature at 2469 m is about −0.1 °C; the coldest month is February (−7.3 °C).
Can it snow at the Great St Bernard Pass in summer?
Yes: above 2000 m, snow can fall in any season during cold spells. Watch the freezing level and the forecast snowfall in the dedicated section.
What is the warmest month in Great St Bernard Pass?
The warmest month in Great St Bernard Pass is August, averaging 8.5 °C (1991–2020 normal). The coldest is February at −7.3 °C.
How much does it rain in Great St Bernard Pass per year?
Great St Bernard Pass receives about 2282 mm of precipitation a year. The wettest month is November (258 mm), the driest September (132 mm).
When is the best time to visit Great St Bernard Pass?
For warmth and sunshine: August (8.5 °C on average, 202 h of sun). The coldest month is February (−7.3 °C). Check the 15-day forecast above for your dates.