The 5 most beautiful lakes in Canada
Explore Canada's stunning lakes: Lake Louise, Lake Superior, Maligne Lake, Emerald Lake, and Lake Okanagan, each offering unique beauty and activities.
Mayo in September sees low daytime temperatures of 12°C (54°F) and nighttime lows of 2°C (36°F). Moderate rainfall is typical, with around 52 mm (2 in) for the month.
Should you favor a climate that's both dry and comfortably warm, June and July typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Pick a month to see the average temperature, rainfall and sunshine in Mayo - and find the best time to visit.
50-year average (1976-2025)
Based on our historical records, temperatures in Mayo typically drop from around 15°C (59°F) at the start of September to approximately 8°C (46°F) by the end. Nights are cold, with lows typically ranging from -1°C (30°F) to 4°C (39°F).
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Browse day-by-day weather records for Mayo spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
According to our 49 years of weather records for Mayo, the following extremes were recorded between 1976 and 2025.
Find out more about the weather in Canada and which places have the best travel conditions in this month. See all of Canada in September →
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
Pack for changing conditions in Mayo in September. Bring a mix of short and long sleeves, a warm layer like a hoodie or light jacket, and comfortable pants. The key is being able to add or remove layers as the days goes by. Rain gear is recommended, you can expect wet weather on multiple days.
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Temperature Rainfall Humidity Wind Speed
See the full Mayo climate overview or explore weather in Canada.
Where to go in September - average daytime high across popular destinations.
Need travel inspiration? Check out our bucket list articles and be inspired.
The 5 most beautiful lakes in Canada
Explore Canada's stunning lakes: Lake Louise, Lake Superior, Maligne Lake, Emerald Lake, and Lake Okanagan, each offering unique beauty and activities.
Canada in September: Where Is the Best Weather?
Compare September weather in Toronto, Montreal, Vancouver, Quebec City and Osoyoos to find Canada's warmest, driest and sunniest destinations.
Canoeing the south Nahannii
The South Nahanni in the northwest of Canada is one of the most impressive wilderness rivers in the world. Canoeing the south Nahanni is something you must add to your bucket list.
See Polar Bears in Churchill Canada
Thousands of bears gather at the small town of Churchill. In the evening the northern lights give a light show against the dark evening sky. An unforgettable experience.