Climate averages 1991–2020
Weather in Canada in August
In August, average daytime highs across the 86 cities listed in Canada range from 19.6°C in St. John's to 27.8°C in Kelowna. Monthly rainfall ranges from 22 mm in Victoria to 123 mm in Sherbrooke.
Long-term climate patterns, not a forecast for a particular trip.
City by city
August in Canada
| City | Average highHigh / low | Average low | Rainfall mm | Rain days |
|---|---|---|---|---|
| Toronto | 24.5°C17.6°C | 17.6°C | 65 | 8.8 |
| Montréal | 23.5°C15.4°C | 15.4°C | 102 | 11.6 |
| Calgary | 22.3°C10.1°C | 10.1°C | 63 | 9.5 |
| Ottawa | 24.6°C16.0°C | 16.0°C | 90 | 11.1 |
| Edmonton | 21.7°C12.1°C | 12.1°C | 58 | 9.7 |
| Winnipeg | 24.1°C14.4°C | 14.4°C | 76 | 9.8 |
| Mississauga | 25.1°C17.0°C | 17.0°C | 66 | 9.4 |
| Vancouver | 21.8°C14.4°C | 14.4°C | 73 | 7.4 |
| Brampton | 25.1°C16.2°C | 16.2°C | 71 | 9.5 |
| Hamilton | 25.4°C18.7°C | 18.7°C | 69 | 9.4 |
| Surrey | 23.0°C13.3°C | 13.3°C | 49 | 5.7 |
| Québec | 23.2°C14.7°C | 14.7°C | 113 | 13.1 |
| Halifax | 21.4°C16.5°C | 16.5°C | 91 | 10.2 |
| Laval | 24.6°C16.3°C | 16.3°C | 91 | 11.3 |
| London, Canada | 25.1°C16.5°C | 16.5°C | 84 | 10.6 |
| Etobicoke | 25.0°C17.4°C | 17.4°C | 65 | 8.8 |
| Markham | 24.9°C16.9°C | 16.9°C | 67 | 8.9 |
| Vaughan | 24.8°C16.5°C | 16.5°C | 65 | 8.8 |
| Gatineau | 24.5°C16.1°C | 16.1°C | 90 | 11.1 |
| Victoria | 20.0°C14.0°C | 14.0°C | 22 | 3.2 |
| Saskatoon | 23.6°C13.2°C | 13.2°C | 50 | 7.6 |
| Kitchener | 24.4°C15.2°C | 15.2°C | 76 | 9.9 |
| Burnaby | 22.4°C14.3°C | 14.3°C | 73 | 7.4 |
| Longueuil | 24.6°C16.5°C | 16.5°C | 102 | 11.6 |
| Regina | 24.0°C13.2°C | 13.2°C | 61 | 8.5 |
| Oakville | 25.1°C18.2°C | 18.2°C | 66 | 9.4 |
| Richmond Hill | 24.8°C16.3°C | 16.3°C | 65 | 8.8 |
| Burlington | 25.1°C17.7°C | 17.7°C | 66 | 9.4 |
| Nepean | 24.5°C15.7°C | 15.7°C | 86 | 10.8 |
| Oshawa | 24.6°C17.9°C | 17.9°C | 80 | 10.1 |
| Greater Sudbury | 23.0°C14.4°C | 14.4°C | 90 | 11.2 |
| Gloucester, Canada | 24.5°C15.7°C | 15.7°C | 86 | 10.8 |
| Saguenay | 21.6°C12.9°C | 12.9°C | 119 | 14.2 |
| Coquitlam | 23.3°C14.4°C | 14.4°C | 84 | 8.1 |
| Barrie | 23.8°C15.9°C | 15.9°C | 84 | 11.1 |
| Villeray–Saint-Michel–Parc-Extension | 24.5°C16.0°C | 16.0°C | 102 | 11.6 |
| Kelowna | 27.8°C16.5°C | 16.5°C | 25 | 5.2 |
| Trois-Rivières | 23.9°C16.0°C | 16.0°C | 109 | 12.0 |
| Guelph | 24.4°C15.5°C | 15.5°C | 76 | 9.9 |
| Mercier–Hochelaga-Maisonneuve | 24.6°C16.5°C | 16.5°C | 102 | 11.6 |
| Abbotsford | 22.8°C12.8°C | 12.8°C | 61 | 6.6 |
| Whitby | 24.8°C18.0°C | 18.0°C | 85 | 10.1 |
| St. Catharines | 25.1°C19.1°C | 19.1°C | 75 | 9.9 |
| Milton | 25.2°C17.0°C | 17.0°C | 72 | 9.5 |
| Langley | 23.5°C13.6°C | 13.6°C | 49 | 5.7 |
| Kingston, Canada | 24.1°C18.7°C | 18.7°C | 96 | 11.1 |
| Cambridge, Canada | 24.9°C16.0°C | 16.0°C | 75 | 9.5 |
| Sherbrooke | 23.1°C14.8°C | 14.8°C | 123 | 13.7 |
| Orléans, Canada | 24.3°C15.6°C | 15.6°C | 93 | 11.0 |
| Saint-Louis-de-Terrebonne | 24.2°C16.0°C | 16.0°C | 96 | 11.6 |
| Ajax | 24.8°C17.9°C | 17.9°C | 67 | 8.8 |
| Thornhill | 24.8°C17.2°C | 17.2°C | 65 | 8.8 |
| Terrebonne | 24.5°C16.4°C | 16.4°C | 96 | 11.6 |
| St. John's | 19.6°C13.7°C | 13.7°C | 80 | 10.4 |
| Thunder Bay | 22.3°C15.6°C | 15.6°C | 67 | 9.1 |
| Sydney, Canada | 22.0°C16.4°C | 16.4°C | 89 | 10.9 |
| Waterloo | 24.4°C15.5°C | 15.5°C | 76 | 9.9 |
| Brantford | 25.3°C16.5°C | 16.5°C | 75 | 9.5 |
| Kamloops | 27.2°C15.3°C | 15.3°C | 23 | 5.2 |
| Lethbridge | 25.2°C12.8°C | 12.8°C | 35 | 5.8 |
| Delta | 23.0°C14.4°C | 14.4°C | 41 | 4.8 |
| Chilliwack | 23.8°C14.3°C | 14.3°C | 74 | 8.6 |
| Dartmouth | 22.5°C16.4°C | 16.4°C | 91 | 10.2 |
| Red Deer | 21.4°C11.2°C | 11.2°C | 67 | 9.9 |
| Niagara Falls | 24.9°C18.5°C | 18.5°C | 85 | 11.0 |
| Saint-Jean-sur-Richelieu | 24.4°C16.3°C | 16.3°C | 108 | 12.3 |
| Pickering | 24.1°C17.0°C | 17.0°C | 84 | 10.1 |
| Newmarket | 24.7°C15.9°C | 15.9°C | 78 | 9.6 |
| Nanaimo | 22.3°C15.3°C | 15.3°C | 54 | 6.3 |
| Airdrie | 21.4°C10.3°C | 10.3°C | 68 | 9.9 |
| Kanata | 24.5°C15.7°C | 15.7°C | 84 | 10.6 |
| North Vancouver | 22.1°C14.6°C | 14.6°C | 73 | 7.4 |
| Moncton | 23.6°C15.4°C | 15.4°C | 76 | 9.8 |
| Peterborough, Canada | 24.7°C16.4°C | 16.4°C | 85 | 10.5 |
| Repentigny | 24.5°C16.3°C | 16.3°C | 95 | 11.1 |
| Maple Ridge | 23.3°C13.8°C | 13.8°C | 107 | 9.1 |
| Prince George | 22.3°C11.5°C | 11.5°C | 41 | 8.3 |
| New Westminster | 22.6°C13.4°C | 13.4°C | 73 | 7.4 |
| Caledon | 23.7°C14.8°C | 14.8°C | 74 | 10.0 |
| Stoney Creek | 25.8°C17.6°C | 17.6°C | 69 | 9.4 |
| Pierrefonds-Roxboro | 24.5°C16.7°C | 16.7°C | 91 | 11.3 |
| Sarnia | 25.2°C18.3°C | 18.3°C | 70 | 10.4 |
| Sault Ste. Marie | 22.8°C15.5°C | 15.5°C | 95 | 10.9 |
| Saint John | 21.0°C14.9°C | 14.9°C | 80 | 9.3 |
| Sherwood Park | 21.0°C11.6°C | 11.6°C | 59 | 9.8 |
| Grande Prairie | 21.1°C11.2°C | 11.2°C | 47 | 8.9 |
A rain day is a local calendar day with at least 1 mm of precipitation.