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Weather & Climate in Unterseen, Switzerland
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Unterseen has a cool climate with an average annual temperature of 43°F (6°C). Winters average 29°F in January while summers reach 58°F in July. The area gets 245 sunny days per year, above the national average. Annual precipitation totals 50.1 inches (wetter than the 38-inch national average). The area receives 19.0 inches of snow annually, a moderate snowfall amount. The city sits at an elevation of 1,870 feet.
Temperature
29°F Jan (-1°C)
58°F Jul (14°C)
| Annual Average | 42.6°F |
| 21% below US avg | |
| January Average | 29°F (-1°C) |
| July Average | 58°F (14°C) |
| Sunny Days | 245 days/yr |
Geography
| Elevation | 1,870 ft (570 m) |
| Area | 9.7 sq mi (25.1 km²) |
| Population Density | 530/sq mi |
| Coordinates | 46.6853°N, 7.8472°W |
| Timezone | Europe/Zurich |
Precipitation & Snow
Air Quality
Earthquake History
864 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 | 58 km | 10 km |
| Nov 20, 1991 | 1 km WSW of Churwalden, Switzerland | M4.7 | 128 km | 10 km |
| Feb 17, 1992 | 4 km NNE of Scharans, Switzerland | M4.5 | 125 km | 10 km |
| Jan 4, 2009 | 3 km S of Wildhaus, Switzerland | M4.5 | 127 km | 3 km |
| Aug 28, 1994 | 6 km SSW of Muotathal, Switzerland | M4.5 | 73 km | 8 km |
| Dec 14, 1994 | 7 km SSE of Amancy, France | M4.5 | 137 km | 10 km |
| May 8, 1992 | 2 km WSW of Sennwald, Switzerland | M4.4 | 138 km | 5 km |
| May 24, 1995 | 7 km NE of Le Chenit, Switzerland | M4.4 | 117 km | 6 km |
| May 8, 1992 | 0 km NNW of Sennwald, Switzerland | M4.4 | 141 km | 5 km |
| Feb 23, 2004 | 5 km SSE of Roulans, France | M4.4 | 136 km | 17 km |
| May 15, 1992 | 1 km W of Sennwald, Switzerland | M4.4 | 140 km | 5 km |
| Nov 22, 1997 | 4 km SSW of Krummenau, Switzerland | M4.4 | 115 km | 10 km |
| Mar 22, 2023 | 1 km NW of Pont-de-Roide, France | M4.4 | 114 km | 12 km |
| Jun 14, 1993 | 3 km S of Vogogna, Italy | M4.4 | 86 km | 10 km |
| May 6, 2003 | 7 km WSW of Linthal, Switzerland | M4.3 | 84 km | 6 km |
| Mar 31, 1996 | 7 km NNW of Bionaz, Italy | M4.3 | 90 km | 5 km |
| Apr 29, 2003 | 2 km SSW of Varen, Switzerland | M4.3 | 47 km | 8 km |
| Nov 16, 1995 | 1 km ENE of Einsiedeln, Switzerland | M4.3 | 86 km | 5 km |
| Dec 30, 1992 | 2 km SW of Ühlingen-Birkendorf, Germany | M4.2 | 118 km | 33 km |
| May 12, 2005 | 1 km NW of Oensingen, Switzerland | M4.2 | 69 km | 25 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 | 51 km |
| 1996 | LAKE BRIENZ | Meteorological | 0.5 m | — | 11 km |
| 563 | LAKE GENEVA | Meteorological | — | — | 87 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 29°F (-1°C) | 3.5 in | Coldest, Driest |
| February | 30°F (-1°C) | 3.7 in | |
| March | 34°F (1°C) | 3.5 in | |
| April | 39°F (4°C) | 3.9 in | |
| May | 48°F (9°C) | 4.5 in | |
| June | 53°F (12°C) | 5.2 in | Wettest |
| July | 58°F (14°C) | 4.9 in | Warmest |
| August | 58°F (14°C) | 4.9 in | |
| September | 52°F (11°C) | 3.7 in | |
| October | 45°F (7°C) | 4.1 in | |
| November | 36°F (2°C) | 4.2 in | |
| December | 31°F (-0°C) | 4.0 in |
Unterseen has a seasonal temperature swing of 28°F / from 29°F in January to 58°F in July. Total annual precipitation is 50.1 inches, with June being the wettest month (5.2") and January the driest (3.5").