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Weather & Climate in La Roche-Derrien, France
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
La Roche-Derrien experiences four distinct seasons with an average annual temperature of 53°F (12°C). Winters average 43°F in January while summers reach 61°F in July / relatively mild seasonal variation. The area gets 214 sunny days per year. Annual precipitation totals 43.1 inches. The area receives 3.3 inches of snow annually. The city sits at an elevation of 75 feet.
Temperature
43°F Jan (6°C)
61°F Jul (16°C)
| Annual Average | 53.0°F |
| 2% below US avg | |
| January Average | 43°F (6°C) |
| July Average | 61°F (16°C) |
| Sunny Days | 214 days/yr |
Geography
| Elevation | 75 ft (23 m) |
| Area | 4.7 sq mi (12.1 km²) |
| Population Density | 228/sq mi |
| Coordinates | 48.7469°N, 3.2606°W |
| Timezone | Europe/Paris |
Precipitation & Snow
Air Quality
Earthquake History
166 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.5.
| Nov 21, 2013 | 1 km WSW of Plescop, France | M4.5 | 122 km | 4 km |
| Sep 30, 2002 | 3 km W of Languidic, France | M4.2 | 102 km | 10 km |
| Apr 30, 1990 | 5 km SE of Saint Helier, Jersey | M4.2 | 99 km | 22 km |
| Sep 30, 2002 | 1 km E of Languidic, France | M4.1 | 102 km | 4 km |
| Jul 11, 2014 | 23 km W of Saint Helier, Jersey | M3.9 | 76 km | 12 km |
| Oct 11, 1995 | 1 km SSE of Querrien, France | M3.9 | 91 km | 10 km |
| Jul 18, 2004 | 6 km WSW of Groix, France | M3.8 | 128 km | 16 km |
| Apr 23, 2002 | 1 km ESE of Melgven, France | M3.8 | 102 km | 6 km |
| Jul 11, 2002 | 3 km NW of Pluduno, France | M3.8 | 73 km | 10 km |
| Feb 19, 2020 | 3 km ESE of Brest, France | M3.7 | 97 km | 10 km |
| Feb 25, 2015 | 30 km SW of Saint Helier, Jersey | M3.7 | 69 km | 2 km |
| Aug 17, 1995 | 28 km S of Salcombe, United Kingdom | M3.6 | 143 km | 10 km |
| Aug 22, 1998 | 38 km SSE of Plobannalec-Lesconil, France | M3.6 | 149 km | 19 km |
| Apr 22, 1995 | 6 km E of Binic, France | M3.5 | 41 km | 10 km |
| May 3, 1999 | 1 km SE of Gouesnach, France | M3.5 | 113 km | 15 km |
| May 14, 1994 | 0 km SE of Riec-sur-Belon, France | M3.5 | 107 km | 10 km |
| Dec 11, 2013 | 6 km WSW of Le Faou, France | M3.5 | 90 km | 2 km |
| Feb 9, 2005 | 2 km N of Plouay, France | M3.4 | 91 km | 10 km |
| Mar 21, 2003 | 10 km SE of Groix, France | M3.4 | 132 km | 18 km |
| Sep 17, 1994 | 33 km NE of Plouézec, France | M3.4 | 51 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 43°F (6°C) | 4.4 in | Coldest |
| February | 44°F (7°C) | 3.5 in | |
| March | 47°F (8°C) | 3.2 in | |
| April | 49°F (9°C) | 2.4 in | |
| May | 54°F (12°C) | 2.5 in | |
| June | 58°F (15°C) | 2.0 in | |
| July | 61°F (16°C) | 1.7 in | Driest |
| August | 63°F (17°C) | 2.1 in | Warmest |
| September | 60°F (15°C) | 2.9 in | |
| October | 55°F (13°C) | 3.7 in | |
| November | 49°F (10°C) | 4.5 in | Wettest |
| December | 46°F (8°C) | 4.5 in |
La Roche-Derrien has a seasonal temperature swing of 20°F / from 43°F in January to 63°F in August. Total annual precipitation is 37.4 inches, with November being the wettest month (4.5") and July the driest (1.7").