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Weather & Climate in Vionnaz, Switzerland
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Vionnaz has a cool climate with an average annual temperature of 40°F (4°C). Winters average 22°F in January while summers reach 55°F in July. The area gets 269 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 80.8 inches (wetter than the 38-inch national average). The area receives 176.4 inches of snow annually, making winter weather a significant factor for residents. The city sits at an elevation of 1,296 feet.
Temperature
22°F Jan (-5°C)
55°F Jul (13°C)
| Annual Average | 39.5°F |
| 27% below US avg | |
| January Average | 22°F (-5°C) |
| July Average | 55°F (13°C) |
| Sunny Days | 269 days/yr |
Geography
| Elevation | 1,296 ft (395 m) |
| Area | 8.1 sq mi (21.0 km²) |
| Population Density | 212/sq mi |
| Coordinates | 46.3110°N, 6.9006°W |
| Timezone | Europe/Zurich |
Precipitation & Snow
Air Quality
Earthquake History
910 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.7.
| Feb 14, 1999 | 3 km NNE of Belfaux, Switzerland | M4.7 | 63 km | 10 km |
| Mar 12, 2022 | 3 km S of Faverges, France | M4.5 | 81 km | 3 km |
| Dec 14, 1994 | 7 km SSE of Amancy, France | M4.5 | 54 km | 10 km |
| Jul 15, 1996 | 3 km NE of Chilly, France | M4.5 | 78 km | 5 km |
| Feb 23, 2004 | 5 km SSE of Roulans, France | M4.4 | 117 km | 17 km |
| Jul 23, 1996 | 4 km W of Choisy, France | M4.4 | 77 km | 10 km |
| May 24, 1995 | 7 km NE of Le Chenit, Switzerland | M4.4 | 58 km | 6 km |
| Nov 21, 1995 | 1 km SW of Collegno, Italy | M4.4 | 147 km | 22 km |
| Jun 14, 1993 | 3 km S of Vogogna, Italy | M4.4 | 114 km | 10 km |
| Mar 22, 2023 | 1 km NW of Pont-de-Roide, France | M4.4 | 121 km | 12 km |
| Mar 31, 1996 | 7 km NNW of Bionaz, Italy | M4.3 | 57 km | 5 km |
| Apr 29, 2003 | 2 km SSW of Varen, Switzerland | M4.3 | 54 km | 8 km |
| Jun 30, 2010 | 3 km NW of Saint-Martin-de-Belleville, France | M4.3 | 106 km | 2 km |
| May 12, 2005 | 1 km NW of Oensingen, Switzerland | M4.2 | 126 km | 25 km |
| May 14, 1999 | 9 km NW of Brienz, Switzerland | M4.2 | 97 km | 5 km |
| May 14, 2004 | 0 km SSE of Chiusa di San Michele, Italy | M4.2 | 139 km | 10 km |
| Aug 22, 2003 | 6 km NNW of Savièse, Switzerland | M4.2 | 31 km | 4 km |
| May 20, 1999 | 4 km SSE of Plaffeien, Switzerland | M4.2 | 53 km | 2 km |
| Jan 11, 2006 | 1 km S of Saint-Rambert-en-Bugey, France | M4.1 | 120 km | 5 km |
| Oct 7, 1995 | 1 km SSE of Grolley, Switzerland | M4.1 | 59 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
3 tsunamis recorded within 500 km. Highest wave on record: 4.0 m (13 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1601 | LAKE LUCERNE | Eruption + Earthquake | 4.0 m | 8 | 134 km |
| 1996 | LAKE BRIENZ | Meteorological | 0.5 m | — | 94 km |
| 563 | LAKE GENEVA | Meteorological | — | — | 8 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 22°F (-5°C) | 4.4 in | Coldest |
| February | 31°F (-0°C) | 4.6 in | |
| March | 36°F (2°C) | 3.8 in | Driest |
| April | 41°F (5°C) | 3.8 in | |
| May | 50°F (10°C) | 4.3 in | |
| June | 55°F (13°C) | 4.9 in | |
| July | 55°F (13°C) | 4.2 in | |
| August | 60°F (16°C) | 4.2 in | Warmest |
| September | 54°F (12°C) | 3.8 in | |
| October | 46°F (8°C) | 4.4 in | |
| November | 37°F (3°C) | 4.8 in | |
| December | 32°F (-0°C) | 5.0 in | Wettest |
Vionnaz has a seasonal temperature swing of 38°F / from 22°F in January to 60°F in August. Total annual precipitation is 52.0 inches, with December being the wettest month (5.0") and March the driest (3.8").