Rainiest Places in Canada
No region of Canada measures as much precipitation as the west coast of British Columbia. And no weather station on that coast comes close to recording the amount of rain that falls into the Mitchell Inlet rain gauge on Moresby Island in Haida Gwaii (Queen Charlotte Islands). The deserted beach gathers 6325 mm (20.8 feet) of preciptation a year. Nearly all of that, 99 percent, falls as rain.
Not surprisingly, it rains more often at the soggy island inlet than any other Canadian weather station. Mitchell Inlet averages 275 days a year when it rains or snows. That means, three out of four days there are rainy.
The remote inlet receives 1.3 metres more rain than the next wettest place measured in the country. Coming in second for rainfall is Boat Bluff, located along the Inside Passage of BC's central coast. Boat Bluff registers 5047 mm (16.6 feet) of precipitation a year that falls on 253 days, again almost all rain.
The rankings here are for 1758 weather stations that record precipitation information for Environment Canada. The precipitation data are averages of weather measurements made from 1981 to 2010.
Wettest Canadian Communities
Boat Bluff's rainfall indicates that Klemtu is possibly the rainiest community in Canada. Boat Bluff lies five kilometers north of Klemtu, on a separate island. The Swindle Island village is home to about 460 Kitasoo and Xaixais people.
Farther up the Inside Passage, Hartley Bay measures 4673 mm, over 15.3 feet, of water pelting down each year. The Gitga'at village of 180 year-round residents sits at the confluence of Grenville and Douglas Channels, approximately 140 km south of Prince Rupert.
Hartley Bay is among a select group of BC towns, villages and cities that regularly record over three metres of precipitation a year:
Highest Precipitation in the Rest of Canada
Outside of BC, the Atlantic coast is Canada's wettest region. But it still gets nowhere near the amount of drizzle that deluges the Pacific coast. Here's how much precipitation falls at a sampling of the country's wettest spots:
|164||Wreck Cove Brook, Nova Scotia||76.6||1946|
|183||Red Harbour, Newfoundland||72.5||1841|
|147||Pools Cove, Newfoundland||72.0||1828|
|154||Guysborough, Nova Scotia||71.4||1815|
|219||Forêt Montmorency, Quebec||62.3||1583|
|236||St Fortunat, Quebec||60.7||1542|
|172||Alma, New Brunswick||59.5||1510|
|175||New Glasgow, PEI||49.5||1258|
|162||Waterton Village, Alberta||43.2||1096|
A few places on BC's wet west coast have received more than 300 millimetres of rain in a single day. That's more than some areas of Canada get in a year. This table lists some of the biggest downpours ever recorded for one day in Canada:
|Jan 26, 1984||McInnes Island, BC||12.6||319|
|Jan 14, 1961||Seymour Falls, BC||12.4||314|
|Nov 14, 1991||Mitchell Inlet, BC||12.1||306|
|Nov 11, 1990||Tahsis, BC||11.8||300|
|Nov 10, 1990||Seymour Falls, BC||11.8||300|
Environment Canada. Meteorological Service of Canada. Canadian Climate Normals. 1981-2010 Climate Normals & Averages.