Blue Mountains (ON) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Blue Mountains.
Climate overview of Blue Mountains
Blue Mountains, Ontario, Canada, experiences significant temperature variation throughout the year. Summers bring daytime highs of 24°C (75°F) in July, while winters cool to -2°C (28°F) in January.
The city has a wet climate, receiving around 1116 mm (44 in) of rain/snowfall per year. Despite the high annual total, it has warm summers and very cold winters. November is the wettest month.
Blue Mountains Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Blue Mountains - and find the best time to visit.
Monthly Temperature in Blue Mountains
Depending on the time of the year, temperatures range from comfortable to very cold in Blue Mountains. On average, daytime temperatures range from a comfortable 24°C (75°F) in July to a very cold -2°C (28°F) in January.
Nighttime temperatures range from 17°C (63°F) in July to -10°C (14°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Blue Mountains
Blue Mountains has a relatively rain/snowy climate with high precipitation levels, averaging 1116 mm (44 in) of rain/snowfall annually. The wettest period in Blue Mountains occurs in November, which receives around 109 mm (4.3 in) of precipitation. During the driest month, March, Blue Mountains experiences moderate snow/rainfall, totaling 72 mm (2.8 in). The consistent precipitation levels throughout the year contribute to a relatively stable climate. For more details, please visit our Blue Mountains Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Blue Mountains
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: June, July, August and September
- Warmest weather: July and August
- Fewer rainy days: April, May, June, July and August
- Seasonal pattern: Warm summers and very cold winters
- Coldest conditions: January, with freezing nights around -10°C (14°F).
Frequently asked questions about the climate in Blue Mountains
What is the best time to visit Blue Mountains?
June, July, August and September typically offer the most optimal weather in Blue Mountains. In contrast, January, February, March, April, November and December tend to have less optimal conditions. Blue Mountains has warm summers and very cold winters.
What temperatures can I expect in Blue Mountains?
Daytime highs range from -2°C (28°F) in January to 24°C (75°F) in July. Nighttime lows range from -10°C (14°F) to 17°C (63°F). Temperatures vary considerably through the year.
How much rain does Blue Mountains get?
Annual rainfall is around 1116 mm (44 in). November is the wettest month with 109 mm (4.3 in), while March is the driest with 72 mm (2.8 in).
Blue Mountains 3-Day Forecast
Blue Mountains on the map
Blue Mountains is highlighted - select any city to see its climate.
Popular this month
Where to go in August - average daytime high across popular destinations.
Bucket list
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.
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.
Banff National Park
Snowy mountains, clear blue lakes and green forests make Banff National Park a wonderful bucket list destination. The pristine wilderness is a mecca for walkers.