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Weather & Climate in Bowen Island, BC
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Bowen Island experiences four distinct seasons with an average annual temperature of 49°F (9°C). Winters average 37°F in January while summers reach 61°F in July. The area gets 208 sunny days per year. Annual precipitation totals 70.7 inches (wetter than the 38-inch national average). The city sits at an elevation of 102 feet.
Temperature
37°F Jan (3°C)
61°F Jul (16°C)
| Annual Average | 48.7°F |
| 10% below US avg | |
| January Average | 37°F (3°C) |
| July Average | 61°F (16°C) |
| Sunny Days | 208 days/yr |
Geography
| Elevation | 102 ft (31 m) |
| Area | 19.4 sq mi (50.1 km²) |
| Population Density | 220/sq mi |
| Coordinates | 49.3847°N, 123.3362°W |
| Timezone | America/Vancouver |
Precipitation & Snow
Air Quality
Earthquake History
256 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.0.
| Apr 14, 1990 | 4 km ENE of Deming, Washington | M5.0 | 105 km | 12 km |
| Feb 21, 2025 | 28 km W of Squamish, Canada | M4.8 | 37 km | 10 km |
| Mar 3, 2025 | 2025 Orcas Island, Washington | M4.5 | 94 km | 16 km |
| Jun 24, 1997 | 19 km SSW of Gibsons, Canada | M4.4 | 26 km | 3 km |
| Apr 2, 1990 | 2 km ENE of Deming, Washington | M4.3 | 104 km | 0 km |
| Feb 19, 1991 | 31 km E of Squamish, Canada | M4.3 | 56 km | 5 km |
| Feb 22, 1996 | 31 km NNE of South Pender Harbour, Canada | M4.1 | 70 km | 2 km |
| Sep 21, 2002 | 9 km SW of Friday Harbor, Washington | M4.1 | 101 km | 23 km |
| Apr 3, 1990 | 3 km ENE of Deming, Washington | M4.0 | 104 km | 1 km |
| Apr 14, 1990 | 2 km ESE of Deming, Washington | M4.0 | 104 km | 3 km |
| Sep 26, 2024 | 12 km E of Saanichton, Canada | M4.0 | 90 km | 52 km |
| Dec 27, 2012 | 12 km E of North Saanich, Canada | M4.0 | 82 km | 54 km |
| Jul 1, 2009 | 4 km SE of Coupeville, Washington | M4.0 | 142 km | 58 km |
| Apr 7, 2001 | 36 km NNW of Neah Bay, Washington | M3.9 | 128 km | 32 km |
| Mar 17, 2004 | 3 km SW of Clear Lake, Washington | M3.8 | 130 km | 0 km |
| Aug 19, 2025 | 17 km NNW of Sekiu, Washington | M3.7 | 133 km | 38 km |
| Dec 11, 1999 | 10 km NNE of Oak Bay, Canada | M3.7 | 95 km | 49 km |
| Feb 14, 2025 | 16 km SSE of Victoria, Canada | M3.7 | 122 km | 40 km |
| Feb 8, 2011 | 7 km WNW of Friday Harbor, Washington | M3.6 | 93 km | 52 km |
| Jul 4, 2006 | 13 km SE of Oak Bay, Canada | M3.6 | 115 km | 45 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
2 tsunamis recorded within 500 km. Highest wave on record: 38.0 m (125 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 2007 | CHEHALIS LAKE, CHILLIWACK | Meteorological | 38.0 m | — | 96 km |
| 1946 | BRITISH COLUMBIA | Eruption + Earthquake | 9.0 m | 1 | 126 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
6 volcanoes within 200 km. Closest: Garibaldi (57 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Garibaldi | Stratovolcano | 2,678 m (8,786 ft) | -8060 | 57 km |
| Garibaldi Lake | Volcanic field | 2,316 m (7,598 ft) | Unknown | 66 km |
| Cayley Volcanic Field | Volcanic field | 2,375 m (7,792 ft) | Unknown | 82 km |
| Baker | Stratovolcano(es) | 3,285 m (10,778 ft) | 1880 | 130 km |
| Meager | Complex | 2,680 m (8,793 ft) | -410 | 139 km |
| Bridge River Cones | Volcanic field | 2,500 m (8,202 ft) | Unknown | 157 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 37°F (3°C) | 9.8 in | Coldest |
| February | 40°F (4°C) | 6.5 in | |
| March | 42°F (6°C) | 6.5 in | |
| April | 46°F (8°C) | 5.3 in | |
| May | 52°F (11°C) | 3.9 in | |
| June | 57°F (14°C) | 3.1 in | |
| July | 61°F (16°C) | 2.0 in | Driest |
| August | 62°F (17°C) | 2.2 in | Warmest |
| September | 57°F (14°C) | 2.8 in | |
| October | 49°F (10°C) | 7.7 in | |
| November | 42°F (6°C) | 11.5 in | Wettest |
| December | 38°F (3°C) | 9.6 in |
Bowen Island has a seasonal temperature swing of 25°F / from 37°F in January to 62°F in August. Total annual precipitation is 70.7 inches, with November being the wettest month (11.5") and July the driest (2.0").