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Weather & Climate in Saint Pierre du Bois Parish, Guernsey
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Saint Pierre du Bois Parish experiences four distinct seasons with an average annual temperature of 52°F (11°C). Winters average 44°F in January while summers reach 62°F in July / relatively mild seasonal variation. The area gets 274 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 34.1 inches. The city sits at an elevation of 135 feet.
Temperature
44°F Jan (7°C)
62°F Jul (16°C)
| Annual Average | 52.2°F |
| 3% below US avg | |
| January Average | 44°F (7°C) |
| July Average | 62°F (16°C) |
| Sunny Days | 274 days/yr |
Geography
| Elevation | 135 ft (41 m) |
| Area | 2.5 sq mi (6.5 km²) |
| Population Density | 797/sq mi |
| Coordinates | 49.4540°N, 2.6381°W |
| Timezone | Europe/Guernsey |
Precipitation & Snow
Air Quality
Earthquake History
79 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.2.
| Apr 30, 1990 | 5 km SE of Saint Helier, Jersey | M4.2 | 54 km | 22 km |
| Jul 11, 2014 | 23 km W of Saint Helier, Jersey | M3.9 | 37 km | 12 km |
| Jul 11, 2002 | 3 km NW of Pluduno, France | M3.8 | 103 km | 10 km |
| Feb 25, 2015 | 30 km SW of Saint Helier, Jersey | M3.7 | 53 km | 2 km |
| Aug 17, 1995 | 28 km S of Salcombe, United Kingdom | M3.6 | 102 km | 10 km |
| Jul 26, 1993 | 5 km ESE of Villedieu-les-Poêles, France | M3.5 | 130 km | 31 km |
| Apr 22, 1995 | 6 km E of Binic, France | M3.5 | 95 km | 10 km |
| Jun 22, 1997 | 13 km SSE of Saint Helier, Jersey | M3.4 | 61 km | 10 km |
| Dec 7, 1998 | 0 km SE of Cherrueix, France | M3.4 | 117 km | 2 km |
| Sep 17, 1994 | 33 km NE of Plouézec, France | M3.4 | 59 km | 10 km |
| Aug 29, 2001 | 5 km ENE of Saint-Lô, France | M3.3 | 122 km | 6 km |
| Sep 22, 1991 | 5 km ENE of Neulliac, France | M3.3 | 148 km | 10 km |
| Jul 23, 2014 | France | M3.3 | 57 km | 2 km |
| Feb 12, 1990 | 1 km N of Lanmeur, France | M3.2 | 118 km | 10 km |
| Jul 14, 1998 | 7 km NNE of Poullaouen, France | M3.2 | 137 km | 2 km |
| Oct 16, 1997 | 4 km ENE of Torquay, United Kingdom | M3.2 | 129 km | 10 km |
| May 30, 2001 | 3 km SW of Quintin, France | M3.2 | 121 km | 8 km |
| Apr 17, 1992 | 3 km SSE of Plounévez-Quintin, France | M3.1 | 139 km | 10 km |
| Apr 28, 1998 | 3 km NE of Plouha, France | M3.1 | 86 km | 2 km |
| Jul 13, 2006 | 12 km N of Plounéour-Trez, France | M3.1 | 145 km | 13 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
1 tsunami recorded within 500 km. Highest wave on record: 0.4 m (1 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 2011 | PLYMOUTH, ENGLAND | Avalanche | 0.4 m | — | 119 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 44°F (7°C) | 4.1 in | |
| February | 43°F (6°C) | 3.2 in | Coldest |
| March | 46°F (8°C) | 2.9 in | |
| April | 48°F (9°C) | 2.1 in | |
| May | 53°F (12°C) | 2.0 in | |
| June | 58°F (14°C) | 1.9 in | |
| July | 62°F (16°C) | 1.6 in | Driest |
| August | 62°F (17°C) | 1.9 in | Warmest |
| September | 60°F (15°C) | 2.7 in | |
| October | 55°F (13°C) | 3.6 in | |
| November | 50°F (10°C) | 4.3 in | Wettest |
| December | 46°F (8°C) | 4.1 in |
Saint Pierre du Bois Parish has a seasonal temperature swing of 19°F / from 43°F in February to 62°F in August. Total annual precipitation is 34.1 inches, with November being the wettest month (4.3") and July the driest (1.6").