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Weather & Climate in Lannion, France
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Lannion 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 98 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 | 98 ft (30 m) |
| Area | 17.0 sq mi (43.9 km²) |
| Population Density | 1,267/sq mi |
| Coordinates | 48.7326°N, 3.4566°W |
| Timezone | Europe/Paris |
Precipitation & Snow
Air Quality
Earthquake History
158 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 | 125 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 | 113 km | 22 km |
| Sep 30, 2002 | 1 km E of Languidic, France | M4.1 | 103 km | 4 km |
| Jul 11, 2014 | 23 km W of Saint Helier, Jersey | M3.9 | 89 km | 12 km |
| Oct 11, 1995 | 1 km SSE of Querrien, France | M3.9 | 88 km | 10 km |
| Apr 23, 2002 | 1 km ESE of Melgven, France | M3.8 | 96 km | 6 km |
| Jul 18, 2004 | 6 km WSW of Groix, France | M3.8 | 125 km | 16 km |
| Jul 11, 2002 | 3 km NW of Pluduno, France | M3.8 | 87 km | 10 km |
| Feb 25, 2015 | 30 km SW of Saint Helier, Jersey | M3.7 | 83 km | 2 km |
| Feb 19, 2020 | 3 km ESE of Brest, France | M3.7 | 83 km | 10 km |
| Aug 17, 1995 | 28 km S of Salcombe, United Kingdom | M3.6 | 141 km | 10 km |
| Aug 22, 1998 | 38 km SSE of Plobannalec-Lesconil, France | M3.6 | 143 km | 19 km |
| May 3, 1999 | 1 km SE of Gouesnach, France | M3.5 | 104 km | 15 km |
| May 14, 1994 | 0 km SE of Riec-sur-Belon, France | M3.5 | 102 km | 10 km |
| Dec 11, 2013 | 6 km WSW of Le Faou, France | M3.5 | 78 km | 2 km |
| Apr 22, 1995 | 6 km E of Binic, France | M3.5 | 55 km | 10 km |
| Mar 21, 2003 | 10 km SE of Groix, France | M3.4 | 130 km | 18 km |
| Sep 17, 1994 | 33 km NE of Plouézec, France | M3.4 | 65 km | 10 km |
| Feb 9, 2005 | 2 km N of Plouay, France | M3.4 | 89 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) | 4.6 in | Coldest |
| February | 44°F (7°C) | 3.7 in | |
| March | 47°F (8°C) | 3.3 in | |
| April | 49°F (9°C) | 2.5 in | |
| May | 54°F (12°C) | 2.5 in | |
| June | 58°F (15°C) | 2.1 in | |
| July | 61°F (16°C) | 1.8 in | Driest |
| August | 63°F (17°C) | 2.1 in | Warmest |
| September | 59°F (15°C) | 3.0 in | |
| October | 55°F (13°C) | 3.8 in | |
| November | 49°F (9°C) | 4.6 in | |
| December | 46°F (8°C) | 4.7 in | Wettest |
Lannion has a seasonal temperature swing of 20°F / from 43°F in January to 63°F in August. Total annual precipitation is 38.4 inches, with December being the wettest month (4.7") and July the driest (1.8").