All destinations Canada September Your holiday weather, at a glance Canada in September: where is it warmest? In September, Osoyoos (Okanagan) is the warmest place with 23 °C by day, Iqaluit the coolest with 5 °C. 39 of 58 destinations have good holiday weather.
All destinations in September, warmest first Long-term averages for the month: daytime high, sea, sunshine and rainy days.
Place Score Air Sea Sun Rain days Osoyoos (Okanagan) 94 23° – 8 h 6 Penticton (Okanagan) 92 23° – 8 h 6 Summerland 87 22° – 8 h 8 Kelowna 86 22° – 8 h 8 Kamloops 86 22° – 7 h 7 London, Ontario 80 22° – 6 h 9 Hamilton, Ontario 80 22° – 6 h 9 Niagara Falls 78 22° – 6 h 10 Toronto 82 21° – 6 h 9 Kingston, Ontario 79 21° – 7 h 10 Niagara-on-the-Lake 79 21° – 6 h 10 Ottawa 78 21° – 6 h 10 Montreal 79 20° – 6 h 10 Fredericton 79 20° – 6 h 9 Collingwood (Blue Mountains) 76 20° – 6 h 11 Huntsville (Muskoka) 75 20° – 6 h 11 Revelstoke, British Columbia 71 20° – 6 h 13 Trois-Rivières 32 20° – 6 h 11 Nanaimo 31 20° 15° 7 h 9 Moncton 28 20° 17° 6 h 9 Saskatoon 89 19° – 7 h 6 Regina 89 19° – 7 h 6 Vancouver 82 19° 14° 7 h 9 Winnipeg 82 19° – 7 h 9 Halifax 78 19° 17° 6 h 9 Mont-Tremblant, Quebec 76 19° – 6 h 10 Quebec City 75 19° – 6 h 11 Greater Sudbury 75 19° – 6 h 11 Sault Ste. Marie 74 19° – 6 h 12 Lunenburg 25 19° 17° 6 h 9 Charlottetown 23 19° 17° 6 h 10 Squamish 22 19° 15° 7 h 12 Sydney, Nova Scotia 21 19° 17° 6 h 10 Calgary 85 18° – 7 h 8 Thunder Bay 75 18° – 6 h 10 Golden, British Columbia 75 18° – 6 h 12 Gibsons 24 18° 15° 7 h 11 Saint John 22 18° 14° 6 h 10 Saguenay 16 18° – 5 h 12 Victoria 84 17° 11° 7 h 7 Edmonton 81 17° – 7 h 7 Percé, Gaspé 79 17° 14° 7 h 10 Prince George 73 17° – 6 h 10 Whistler 71 17° – 6 h 13 Gander 69 17° – 5 h 12 Ucluelet, Vancouver Island 23 17° 13° 7 h 10 St. John's 17 17° 13° 5 h 11 Canmore, Alberta 80 16° – 7 h 9 Tofino 22 16° 13° 7 h 11 Banff 76 15° – 6 h 10 Jasper, Alberta 68 15° – 6 h 10 Happy Valley-Goose Bay 12 15° – 4 h 13 Prince Rupert 3 15° 12° 4 h 19 Fort Smith 64 14° – 6 h 8 Yellowknife 44 11° – 5 h 8 Dawson City, Yukon 43 11° – 6 h 10 Whitehorse 36 11° – 5 h 11 Iqaluit 11 5° 1° 4 h 11
Canada in September: quick answers Canada in September: where is it warmest? The warmest places in September are Osoyoos (Okanagan) (23 °C), Penticton (Okanagan) (23 °C) and Summerland (22 °C).
Canada in September: where is the sea warmest? The sea is warmest at Moncton (17 °C), Halifax (17 °C) and Lunenburg (17 °C).
Canada in September: where is the weather best? The best holiday weather in September – warm, sunny and dry – is in Osoyoos (Okanagan), Penticton (Okanagan) and Saskatoon.