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Weather & Climate in Treffrin, France
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Treffrin 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 548 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 | 548 ft (167 m) |
| Area | 10.0 sq mi (25.8 km²) |
| Population Density | 62/sq mi |
| Coordinates | 48.2990°N, 3.5173°W |
| Timezone | Europe/Paris |
Precipitation & Snow
Air Quality
Earthquake History
182 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.6.
| Mar 13, 1993 | 1 km WSW of Pénestin, France | M4.6 | 119 km | 10 km |
| Nov 21, 2013 | 1 km WSW of Plescop, France | M4.5 | 85 km | 4 km |
| Sep 30, 2002 | 3 km W of Languidic, France | M4.2 | 57 km | 10 km |
| Apr 30, 1990 | 5 km SE of Saint Helier, Jersey | M4.2 | 143 km | 22 km |
| Sep 30, 2002 | 1 km E of Languidic, France | M4.1 | 59 km | 4 km |
| Oct 11, 1995 | 1 km SSE of Querrien, France | M3.9 | 39 km | 10 km |
| Jul 11, 2014 | 23 km W of Saint Helier, Jersey | M3.9 | 124 km | 12 km |
| Jul 11, 2002 | 3 km NW of Pluduno, France | M3.8 | 93 km | 10 km |
| Mar 28, 2002 | 36 km WSW of Le Palais, France | M3.8 | 117 km | 15 km |
| Jul 18, 2004 | 6 km WSW of Groix, France | M3.8 | 77 km | 16 km |
| Apr 23, 2002 | 1 km ESE of Melgven, France | M3.8 | 49 km | 6 km |
| Feb 25, 2015 | 30 km SW of Saint Helier, Jersey | M3.7 | 113 km | 2 km |
| Feb 19, 2020 | 3 km ESE of Brest, France | M3.7 | 69 km | 10 km |
| Aug 22, 1998 | 38 km SSE of Plobannalec-Lesconil, France | M3.6 | 96 km | 19 km |
| May 3, 1999 | 1 km SE of Gouesnach, France | M3.5 | 62 km | 15 km |
| May 14, 1994 | 0 km SE of Riec-sur-Belon, France | M3.5 | 54 km | 10 km |
| Dec 11, 2013 | 6 km WSW of Le Faou, France | M3.5 | 54 km | 2 km |
| Apr 22, 1995 | 6 km E of Binic, France | M3.5 | 67 km | 10 km |
| Aug 24, 1996 | 59 km SSW of Guilvinec, France | M3.5 | 135 km | 10 km |
| Mar 21, 2003 | 10 km SE of Groix, France | M3.4 | 83 km | 18 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 43°F (6°C) | 5.0 in | Coldest |
| February | 43°F (6°C) | 4.0 in | |
| March | 46°F (8°C) | 3.5 in | |
| April | 48°F (9°C) | 2.8 in | |
| May | 54°F (12°C) | 2.9 in | |
| June | 59°F (15°C) | 2.2 in | |
| July | 61°F (16°C) | 1.9 in | Driest |
| August | 63°F (17°C) | 2.3 in | Warmest |
| September | 59°F (15°C) | 3.2 in | |
| October | 54°F (12°C) | 3.9 in | |
| November | 48°F (9°C) | 5.1 in | Wettest |
| December | 44°F (7°C) | 4.9 in |
Treffrin has a seasonal temperature swing of 20°F / from 43°F in January to 63°F in August. Total annual precipitation is 41.7 inches, with November being the wettest month (5.1") and July the driest (1.9").