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Weather & Climate in Shawnigan Lake, BC
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Shawnigan Lake experiences four distinct seasons with an average annual temperature of 48°F (9°C). Winters average 37°F in January while summers reach 60°F in July. The area gets 242 sunny days per year, above the national average. Annual precipitation totals 51.8 inches (wetter than the 38-inch national average). The city sits at an elevation of 476 feet.
Temperature
37°F Jan (3°C)
60°F Jul (16°C)
| Annual Average | 47.7°F |
| 12% below US avg | |
| January Average | 37°F (3°C) |
| July Average | 60°F (16°C) |
| Sunny Days | 242 days/yr |
Geography
| Elevation | 476 ft (145 m) |
| Area | 8.9 sq mi (23.2 km²) |
| Population Density | 437/sq mi |
| Coordinates | 48.6506°N, 123.6449°W |
| Timezone | America/Vancouver |
Precipitation & Snow
Air Quality
Earthquake History
482 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 | 111 km | 12 km |
| Jun 23, 1997 | 2 km NE of Enetai, Washington | M4.9 | 142 km | 13 km |
| Apr 25, 2003 | 26 km W of Brinnon, Washington | M4.8 | 113 km | 51 km |
| Feb 21, 2025 | 28 km W of Squamish, Canada | M4.8 | 116 km | 10 km |
| Jan 30, 2009 | 6 km ESE of Lofall, Washington | M4.7 | 124 km | 62 km |
| Jul 12, 2019 | 2 km S of Roosevelt, Washington | M4.6 | 148 km | 29 km |
| Mar 3, 2025 | 2025 Orcas Island, Washington | M4.5 | 62 km | 16 km |
| Jan 24, 2020 | 46 km WNW of Neah Bay, Washington | M4.5 | 114 km | 10 km |
| Jun 24, 1997 | 19 km SSW of Gibsons, Canada | M4.4 | 65 km | 3 km |
| Feb 19, 1991 | 31 km E of Squamish, Canada | M4.3 | 134 km | 5 km |
| Apr 2, 1990 | 2 km ENE of Deming, Washington | M4.3 | 109 km | 0 km |
| Jan 23, 2001 | 9 km NNW of Ucluelet, Canada | M4.3 | 147 km | 10 km |
| Feb 22, 1996 | 31 km NNE of South Pender Harbour, Canada | M4.1 | 140 km | 2 km |
| Sep 21, 2002 | 9 km SW of Friday Harbor, Washington | M4.1 | 42 km | 23 km |
| Feb 23, 2017 | 11 km NE of Hoodsport, Washington | M4.1 | 138 km | 15 km |
| Apr 3, 1990 | 3 km ENE of Deming, Washington | M4.0 | 110 km | 1 km |
| Apr 14, 1990 | 2 km ESE of Deming, Washington | M4.0 | 109 km | 3 km |
| Jun 15, 1994 | 1 km WNW of Hoodsport, Washington | M4.0 | 143 km | 44 km |
| Sep 26, 2024 | 12 km E of Saanichton, Canada | M4.0 | 30 km | 52 km |
| Dec 27, 2012 | 12 km E of North Saanich, Canada | M4.0 | 29 km | 54 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
3 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 | — | 150 km |
| 1891 | WASHINGTON | Eruption + Earthquake | 2.4 m | — | 73 km |
| 1820 | CAMANO ISLAND, WA | Meteorological | — | — | 115 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
5 volcanoes within 200 km. Closest: Baker (135 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Baker | Stratovolcano(es) | 3,285 m (10,778 ft) | 1880 | 135 km |
| Garibaldi | Stratovolcano | 2,678 m (8,786 ft) | -8060 | 141 km |
| Garibaldi Lake | Volcanic field | 2,316 m (7,598 ft) | Unknown | 150 km |
| Cayley Volcanic Field | Volcanic field | 2,375 m (7,792 ft) | Unknown | 166 km |
| Glacier Peak | Stratovolcano | 3,213 m (10,541 ft) | 1700 | 196 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Wildfire History
2 wildfires (100+ acres) recorded within 100 km. Largest: DELABARRE (4,176 acres, 2023).
| Year | Name | Acres Burned | Distance |
| 2023 | DELABARRE | 4,176 | 99 km |
| 2016 | HAYES TWO | 2,679 | 96 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 37°F (3°C) | 8.5 in | Coldest |
| February | 39°F (4°C) | 5.6 in | |
| March | 41°F (5°C) | 4.8 in | |
| April | 45°F (7°C) | 3.2 in | |
| May | 51°F (11°C) | 2.1 in | |
| June | 56°F (13°C) | 1.7 in | |
| July | 60°F (16°C) | 1.0 in | Driest |
| August | 61°F (16°C) | 1.4 in | Warmest |
| September | 57°F (14°C) | 1.6 in | |
| October | 49°F (9°C) | 4.8 in | |
| November | 41°F (5°C) | 8.6 in | Wettest |
| December | 37°F (3°C) | 8.5 in |
Shawnigan Lake has a seasonal temperature swing of 25°F / from 37°F in January to 61°F in August. Total annual precipitation is 51.8 inches, with November being the wettest month (8.6") and July the driest (1.0").