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Explore Canada's stunning lakes: Lake Louise, Lake Superior, Maligne Lake, Emerald Lake, and Lake Okanagan, each offering unique beauty and activities.
Niagara Falls Weather in September
September in Niagara Falls brings high temperatures, with daytime highs of 23°C (73°F) and nights around 13°C (55°F). Quite a bit of rainfall is expected, around 86 mm (3.4 in), so pack an umbrella.
Rainfall in Niagara Falls in September
Looking at the last 30 years, the data shows about 12 days with rain, averaging 86 mm (3.4 in) for the month. When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.
Temperature in Niagara Falls in September
September is a good time to be in Niagara Falls. Days are excellent, reaching 23°C (73°F), with nights around 13°C (55°F). This kind of day-to-night contrast is typical for this time of year. At 13°C (55°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.
Sunshine in Niagara Falls in September
There are approximately 206 hours of sunshine this month, resulting in mostly clear days.If you're a fan of comfortable temperatures and drier conditions, September is a great time to visit.
Niagara Falls Temperature in September
Min Temperature
13°C (55°F)
Max Temperature
23°C (73°F)
Chance of Rain
40%
Precipitation
86 mm (3.4 in)
Rainy days
12 days
Humidity
74% *
Sunshine
206 hours *
Percentage Sunshine
55% *
* Data from: Buffalo, the United States of America (28 KM, 17 Miles).
Niagara Falls Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Niagara Falls - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Niagara Falls typically drop from around 25°C (77°F) at the start of September to approximately 19°C (66°F) by the end. Nights are cool, with lows typically ranging from 10°C (50°F) to 15°C (59°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather records for Niagara Falls in September
Browse day-by-day weather records for Niagara Falls spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Niagara Falls historical weather extremes in September
Based on weather observations in Niagara Falls between 1976 and 2026, these are the recorded extremes during September.
- Niagara Falls recorded its highest September temperature of 33°C (91°F) on September 6, 2007.
- Niagara Falls experienced its chilliest September day on September 30, 1993, reaching only 10°C (50°F).
- The lowest overnight temperature recorded in September was 1°C (34°F) (September 30, 1981).
Best Places in Canada in September
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
pleasant
tolerable
unpleasant
poor
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).
What to Wear in Niagara Falls in September
For Niagara Falls in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.
What To Do in Niagara Falls in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling9/10 -
Walking9/10 -
Barbeque8/10 -
Camping8/10 -
Outdoor sports9/10
Niagara Falls 3-Day Forecast
More climate data for Niagara Falls
Temperature Rainfall Sunshine Humidity
See the full Niagara Falls climate overview or explore weather in Canada.
Popular in September
Where to go in September - average daytime high across popular destinations.
Toronto
22°C (72°F) Niagara Falls23°C (73°F) Montréal
22°C (72°F) Ottawa22°C (72°F) Quebec City
20°C (68°F) Vancouver19°C (66°F) Calgary19°C (66°F) Whistler15°C (59°F) Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
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