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Weather & Climate in Porrentruy, Switzerland
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Porrentruy experiences four distinct seasons with an average annual temperature of 53°F (12°C). Winters average 38°F in January while summers reach 68°F in July. The area gets 238 sunny days per year, above the national average. Annual precipitation totals 46.6 inches (wetter than the 38-inch national average). The area receives 13.4 inches of snow annually. The city sits at an elevation of 1,394 feet.
Temperature
38°F Jan (3°C)
68°F Jul (20°C)
| Annual Average | 52.8°F |
| 2% below US avg | |
| January Average | 38°F (3°C) |
| July Average | 68°F (20°C) |
| Sunny Days | 238 days/yr |
Geography
| Elevation | 1,394 ft (425 m) |
| Area | 7.0 sq mi (18.1 km²) |
| Population Density | 954/sq mi |
| Coordinates | 47.4173°N, 7.0757°W |
| Timezone | Europe/Zurich |
Precipitation & Snow
Air Quality
Earthquake History
717 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.0.
| Feb 22, 2003 | 4 km W of Rambervillers, France | M5.0 | 110 km | 10 km |
| Feb 14, 1999 | 3 km NNE of Belfaux, Switzerland | M4.7 | 63 km | 10 km |
| Aug 28, 1994 | 6 km SSW of Muotathal, Switzerland | M4.5 | 138 km | 8 km |
| Feb 23, 2004 | 5 km SSE of Roulans, France | M4.4 | 63 km | 17 km |
| May 24, 1995 | 7 km NE of Le Chenit, Switzerland | M4.4 | 103 km | 6 km |
| Mar 22, 2023 | 1 km NW of Pont-de-Roide, France | M4.4 | 24 km | 12 km |
| Apr 29, 2003 | 2 km SSW of Varen, Switzerland | M4.3 | 131 km | 8 km |
| Nov 16, 1995 | 1 km ENE of Einsiedeln, Switzerland | M4.3 | 131 km | 5 km |
| May 6, 2003 | 7 km WSW of Linthal, Switzerland | M4.3 | 149 km | 6 km |
| May 12, 2005 | 1 km NW of Oensingen, Switzerland | M4.2 | 49 km | 25 km |
| Jun 28, 2004 | 2 km NNW of Brugg, Switzerland | M4.2 | 85 km | 20 km |
| Dec 30, 1992 | 2 km SW of Ühlingen-Birkendorf, Germany | M4.2 | 96 km | 33 km |
| May 14, 1999 | 9 km NW of Brienz, Switzerland | M4.2 | 94 km | 5 km |
| Aug 22, 2003 | 6 km NNW of Savièse, Switzerland | M4.2 | 125 km | 4 km |
| Feb 11, 2012 | 2 km WNW of Unterägeri, Switzerland | M4.2 | 115 km | 32 km |
| May 20, 1999 | 4 km SSE of Plaffeien, Switzerland | M4.2 | 82 km | 2 km |
| Aug 24, 1996 | 1 km E of Sirnach, Switzerland | M4.2 | 146 km | 20 km |
| Jun 4, 2024 | 2 km NNW of Unteriberg, Switzerland | M4.2 | 135 km | 5 km |
| Sep 17, 1995 | 0 km ESE of Corminboeuf, Switzerland | M4.1 | 68 km | 10 km |
| Jun 21, 2004 | 1 km WSW of Frenkendorf, Switzerland | M4.1 | 48 km | 22 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 | 128 km |
| 1996 | LAKE BRIENZ | Meteorological | 0.5 m | — | 102 km |
| 563 | LAKE GENEVA | Meteorological | — | — | 119 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 38°F (3°C) | 3.1 in | |
| February | 34°F (1°C) | 3.0 in | Coldest |
| March | 40°F (5°C) | 2.7 in | Driest |
| April | 45°F (7°C) | 3.1 in | |
| May | 53°F (12°C) | 3.9 in | Wettest |
| June | 59°F (15°C) | 3.9 in | |
| July | 68°F (20°C) | 3.5 in | Warmest |
| August | 63°F (17°C) | 3.4 in | |
| September | 57°F (14°C) | 3.4 in | |
| October | 49°F (9°C) | 3.4 in | |
| November | 39°F (4°C) | 3.6 in | |
| December | 34°F (1°C) | 3.6 in |
Porrentruy has a seasonal temperature swing of 34°F / from 34°F in February to 68°F in July. Total annual precipitation is 40.6 inches, with May being the wettest month (3.9") and March the driest (2.7").