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Weather & Climate in Denman Island Trust Area, BC
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Denman Island Trust Area experiences four distinct seasons with an average annual temperature of 49°F (9°C). Winters average 37°F in January while summers reach 62°F in July. The area gets 239 sunny days per year, above the national average. Annual precipitation totals 53.7 inches (wetter than the 38-inch national average). The city sits at an elevation of 131 feet.
Temperature
37°F Jan (3°C)
62°F Jul (17°C)
| Annual Average | 48.9°F |
| 9% below US avg | |
| January Average | 37°F (3°C) |
| July Average | 62°F (17°C) |
| Sunny Days | 239 days/yr |
Geography
| Elevation | 131 ft (40 m) |
| Area | 0.1 sq mi (0.3 km²) |
| Population Density | 10,591/sq mi |
| Coordinates | 49.5519°N, 124.7988°W |
| Timezone | America/Vancouver |
Precipitation & Snow
Air Quality
Earthquake History
118 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.9.
| Jul 15, 2004 | 51 km SW of Vernon, Canada | M5.9 | 149 km | 19 km |
| Jan 3, 1994 | 44 km SW of Vernon, Canada | M5.7 | 143 km | 19 km |
| Jan 8, 2015 | 19 km E of Tofino, Canada | M4.8 | 75 km | 25 km |
| Feb 21, 2025 | 28 km W of Squamish, Canada | M4.8 | 92 km | 10 km |
| May 2, 2001 | 50 km W of Tofino, Canada | M4.7 | 137 km | 10 km |
| Aug 1, 2000 | 40 km NNW of Tofino, Canada | M4.6 | 96 km | 41 km |
| Feb 23, 1991 | 67 km SSW of Vernon, Canada | M4.6 | 145 km | 34 km |
| Jan 24, 2020 | 46 km WNW of Neah Bay, Washington | M4.5 | 115 km | 10 km |
| Jun 24, 1997 | 19 km SSW of Gibsons, Canada | M4.4 | 92 km | 3 km |
| Jan 23, 2001 | 9 km NNW of Ucluelet, Canada | M4.3 | 82 km | 10 km |
| Feb 22, 1996 | 31 km NNE of South Pender Harbour, Canada | M4.1 | 75 km | 2 km |
| May 8, 1999 | 17 km NW of Tofino, Canada | M4.0 | 98 km | 33 km |
| Dec 25, 1999 | 40 km SW of Ucluelet, Canada | M4.0 | 127 km | 30 km |
| Apr 7, 2001 | 36 km NNW of Neah Bay, Washington | M3.9 | 96 km | 32 km |
| May 16, 2001 | 35 km NE of Tofino, Canada | M3.9 | 58 km | 10 km |
| Nov 20, 1994 | 26 km N of Ucluelet, Canada | M3.9 | 68 km | 38 km |
| Feb 18, 2017 | 103 km NE of Campbell River, Canada | M3.9 | 139 km | 8 km |
| Jun 19, 2017 | 21 km SSW of Vernon, Canada | M3.9 | 127 km | 10 km |
| Sep 5, 2017 | 9 km NNE of Ucluelet, Canada | M3.8 | 77 km | 33 km |
| Aug 19, 2025 | 17 km NNW of Sekiu, Washington | M3.7 | 131 km | 38 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
2 tsunamis recorded within 500 km. Highest wave on record: 9.0 m (30 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1946 | BRITISH COLUMBIA | Eruption + Earthquake | 9.0 m | 1 | 36 km |
| 1958 | RIPPLE ROCK, BC | Earthquake + Landslide | 0.5 m | — | 69 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
5 volcanoes within 200 km. Closest: Cayley Volcanic Field (126 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Cayley Volcanic Field | Volcanic field | 2,375 m (7,792 ft) | Unknown | 126 km |
| Garibaldi | Stratovolcano | 2,678 m (8,786 ft) | -8060 | 134 km |
| Garibaldi Lake | Volcanic field | 2,316 m (7,598 ft) | Unknown | 136 km |
| Meager | Complex | 2,680 m (8,793 ft) | -410 | 152 km |
| Bridge River Cones | Volcanic field | 2,500 m (8,202 ft) | Unknown | 171 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 37°F (3°C) | 8.2 in | Coldest |
| February | 39°F (4°C) | 5.8 in | |
| March | 42°F (6°C) | 5.0 in | |
| April | 47°F (8°C) | 3.2 in | |
| May | 53°F (12°C) | 2.1 in | |
| June | 58°F (14°C) | 1.8 in | |
| July | 62°F (17°C) | 1.1 in | Driest |
| August | 63°F (17°C) | 1.5 in | Warmest |
| September | 57°F (14°C) | 1.9 in | |
| October | 49°F (10°C) | 5.7 in | |
| November | 42°F (6°C) | 9.2 in | Wettest |
| December | 38°F (3°C) | 8.4 in |
Denman Island Trust Area has a seasonal temperature swing of 25°F / from 37°F in January to 63°F in August. Total annual precipitation is 53.7 inches, with November being the wettest month (9.2") and July the driest (1.1").