All Countries
Weather & Climate in Boulogne, France
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Boulogne enjoys a temperate climate with an average annual temperature of 57°F (14°C). Winters average 44°F in January while summers reach 67°F in July. The area gets 265 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 36.6 inches. The city sits at an elevation of 243 feet.
Temperature
44°F Jan (7°C)
67°F Jul (19°C)
| Annual Average | 56.7°F |
| 5% above US avg | |
| January Average | 44°F (7°C) |
| July Average | 67°F (19°C) |
| Sunny Days | 265 days/yr |
Geography
| Elevation | 243 ft (74 m) |
| Area | 4.7 sq mi (12.2 km²) |
| Population Density | 124/sq mi |
| Coordinates | 46.7935°N, 1.3194°W |
| Timezone | Europe/Paris |
Precipitation & Snow
Air Quality
Earthquake History
358 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.2.
| Apr 18, 2005 | 1 km SSW of Saint-Pierre-d'Oléron, France | M5.2 | 96 km | 10 km |
| Jun 8, 2001 | France | M5.0 | 28 km | 12 km |
| Jun 16, 2023 | 5 km WNW of Mauzé-sur-le-Mignon, France | M4.8 | 79 km | 5 km |
| Mar 13, 1993 | 1 km WSW of Pénestin, France | M4.6 | 117 km | 10 km |
| Jun 22, 2005 | 2 km E of La Guérinière, France | M4.3 | 70 km | 10 km |
| Jan 12, 1997 | 2 km E of Sainte-Hermine, France | M4.3 | 35 km | 10 km |
| Jun 30, 2010 | 1 km ENE of Fontenay-le-Comte, France | M4.2 | 54 km | 3 km |
| May 2, 2016 | 6 km SE of L'Île-Bouchard, France | M4.2 | 139 km | 2 km |
| Dec 6, 1991 | 2 km S of Bourgueil, France | M4.2 | 125 km | 10 km |
| Sep 28, 2010 | 9 km W of Saint-Pierre-d'Oléron, France | M4.2 | 94 km | 2 km |
| Apr 4, 2005 | 9 km WSW of Saint-Pierre-d'Oléron, France | M4.2 | 98 km | 10 km |
| Jun 25, 2001 | 10 km WSW of Saint-Pierre-d'Oléron, France | M4.2 | 100 km | 2 km |
| Feb 14, 2003 | 5 km NE of Vix, France | M4.1 | 59 km | 10 km |
| Feb 12, 2018 | 3 km SSE of La Meilleraie-Tillay, France | M4.1 | 39 km | 5 km |
| Mar 14, 2002 | 2 km WSW of Chantonnay, France | M4.1 | 22 km | 5 km |
| Jul 25, 2010 | 5 km ENE of Saint-Maurice-la-Clouère, France | M4.0 | 144 km | 2 km |
| Jun 21, 2019 | 2 km WSW of Vihiers, France | M4.0 | 69 km | 8 km |
| Dec 1, 1996 | 5 km SSW of Aigre, France | M3.9 | 144 km | 5 km |
| Jun 17, 2023 | 2 km WSW of Marans, France | M3.9 | 60 km | 5 km |
| Mar 6, 2013 | 0 km E of Ars-en-Ré, France | M3.9 | 67 km | 2 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 44°F (7°C) | 3.3 in | |
| February | 43°F (6°C) | 2.9 in | |
| March | 47°F (8°C) | 2.2 in | |
| April | 50°F (10°C) | 2.3 in | |
| May | 57°F (14°C) | 2.4 in | |
| June | 62°F (17°C) | 1.7 in | |
| July | 67°F (19°C) | 1.6 in | Warmest, Driest |
| August | 66°F (19°C) | 1.7 in | |
| September | 61°F (16°C) | 2.6 in | |
| October | 55°F (13°C) | 3.2 in | |
| November | 47°F (8°C) | 3.5 in | Wettest |
| December | 42°F (6°C) | 3.4 in | Coldest |
Boulogne has a seasonal temperature swing of 24°F / from 42°F in December to 67°F in July. Total annual precipitation is 30.7 inches, with November being the wettest month (3.5") and July the driest (1.6").