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Weather & Climate in Sidney, BC
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Sidney experiences four distinct seasons with an average annual temperature of 52°F (11°C). Winters average 42°F in January while summers reach 66°F in July. The area gets 242 sunny days per year, above the national average. Annual precipitation totals 32.9 inches. The area receives 8.0 inches of snow annually. The city sits at an elevation of 16 feet.
Temperature
42°F Jan (6°C)
66°F Jul (19°C)
| Annual Average | 51.5°F |
| 5% below US avg | |
| January Average | 42°F (6°C) |
| July Average | 66°F (19°C) |
| Sunny Days | 242 days/yr |
Geography
| Elevation | 16 ft (5 m) |
| Area | 2.0 sq mi (5.1 km²) |
| Population Density | 6,249/sq mi |
| Coordinates | 48.6496°N, 123.4026°W |
| Timezone | America/Vancouver |
Precipitation & Snow
Air Quality
Earthquake History
534 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 | 94 km | 12 km |
| Jun 23, 1997 | 2 km NE of Enetai, Washington | M4.9 | 132 km | 13 km |
| Apr 25, 2003 | 26 km W of Brinnon, Washington | M4.8 | 110 km | 51 km |
| Feb 21, 2025 | 28 km W of Squamish, Canada | M4.8 | 117 km | 10 km |
| Jan 30, 2009 | 6 km ESE of Lofall, Washington | M4.7 | 114 km | 62 km |
| Jul 12, 2019 | 2 km S of Roosevelt, Washington | M4.6 | 134 km | 29 km |
| Jan 24, 2020 | 46 km WNW of Neah Bay, Washington | M4.5 | 132 km | 10 km |
| Mar 3, 2025 | 2025 Orcas Island, Washington | M4.5 | 44 km | 16 km |
| Jun 24, 1997 | 19 km SSW of Gibsons, Canada | M4.4 | 67 km | 3 km |
| Apr 2, 1990 | 2 km ENE of Deming, Washington | M4.3 | 91 km | 0 km |
| Feb 19, 1991 | 31 km E of Squamish, Canada | M4.3 | 126 km | 5 km |
| Feb 22, 1996 | 31 km NNE of South Pender Harbour, Canada | M4.1 | 143 km | 2 km |
| Sep 21, 2002 | 9 km SW of Friday Harbor, Washington | M4.1 | 27 km | 23 km |
| Feb 23, 2017 | 11 km NE of Hoodsport, Washington | M4.1 | 133 km | 15 km |
| Jun 15, 1994 | 1 km WNW of Hoodsport, Washington | M4.0 | 139 km | 44 km |
| Apr 14, 1990 | 2 km ESE of Deming, Washington | M4.0 | 91 km | 3 km |
| Apr 3, 1990 | 3 km ENE of Deming, Washington | M4.0 | 92 km | 1 km |
| Sep 26, 2024 | 12 km E of Saanichton, Canada | M4.0 | 14 km | 52 km |
| Dec 27, 2012 | 12 km E of North Saanich, Canada | M4.0 | 11 km | 54 km |
| Jul 1, 2009 | 4 km SE of Coupeville, Washington | M4.0 | 76 km | 58 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 | — | 136 km |
| 1891 | WASHINGTON | Eruption + Earthquake | 2.4 m | — | 73 km |
| 1820 | CAMANO ISLAND, WA | Meteorological | — | — | 101 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
5 volcanoes within 200 km. Closest: Baker (118 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Baker | Stratovolcano(es) | 3,285 m (10,778 ft) | 1880 | 118 km |
| Garibaldi | Stratovolcano | 2,678 m (8,786 ft) | -8060 | 137 km |
| Garibaldi Lake | Volcanic field | 2,316 m (7,598 ft) | Unknown | 146 km |
| Cayley Volcanic Field | Volcanic field | 2,375 m (7,792 ft) | Unknown | 164 km |
| Glacier Peak | Stratovolcano | 3,213 m (10,541 ft) | 1700 | 179 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 | 97 km |
| 2016 | HAYES TWO | 2,679 | 94 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 42°F (6°C) | 5.6 in | |
| February | 41°F (5°C) | 3.9 in | |
| March | 44°F (6°C) | 3.1 in | |
| April | 48°F (9°C) | 2.0 in | |
| May | 53°F (12°C) | 1.5 in | |
| June | 58°F (14°C) | 1.2 in | |
| July | 66°F (19°C) | 0.8 in | Warmest, Driest |
| August | 62°F (17°C) | 1.0 in | |
| September | 58°F (14°C) | 1.2 in | |
| October | 50°F (10°C) | 3.1 in | |
| November | 43°F (6°C) | 5.9 in | Wettest |
| December | 39°F (4°C) | 5.8 in | Coldest |
Sidney has a seasonal temperature swing of 26°F / from 39°F in December to 66°F in July. Total annual precipitation is 35.1 inches, with November being the wettest month (5.9") and July the driest (0.8").