Early autumn · Weather & things to do
Niagara Falls & Niagara-on-the-Lake in September
Niagara Falls & Niagara-on-the-Lake cools off: highs slip to 73°F (23°C), from 80°F in August, with lows of 59°F (15°C) and about 3.2 in (81 mm) of rain.
At 83/100 for comfort (2nd of 12), it's one of the best months to visit.
- Avg high
- 73°F (23°C)
- Avg low
- 59°F (15°C)
- Rain
- 3.2 in (81 mm)
- Humidity
- 73%
- Cloud cover
- 60%
- Daylight
- ~12 h 17 min
- Comfort score
- 83/100 · Great
What September feels like
Highs settle around 73°F (23°C), warm enough for short sleeves most of the day.
Nights cool to an average low of 59°F (15°C).
Some rain is likely, about 3.2 in (81 mm) in the month, so pack for a shower or two.
Plan around September
September is one of Niagara Falls & Niagara-on-the-Lake's best months on the climate data.
- Last warm month for a while: October highs fall to 60°F.
- Last of the best-scoring months: by October, the score drops to 71/100.
- Comfort holds steady from August (85 → 83/100).
- September sits inside the May – Oct window our Toronto, Niagara & Prince Edward County route recommends.
What to pack for September
- Light, breathable clothes73°F afternoons
- Packable rain jacket or umbrellaabout 3.2 in of rain
- Comfortable walking shoesmost picks involve some walking
What to do in Niagara Falls & Niagara-on-the-Lake in September
September is good outdoor weather here, so these picks lean toward the open air.
Horseshoe Falls
The largest of the three falls, best seen from Table Rock on the Canadian side.
Why now September scores 83/100 for comfort, good conditions for being outside.
Niagara Parkway
Riverside road past orchards, wineries and the Floral Clock between the falls and the lake.
Why now Highs near 73°F and 3.2 in of monthly rain make this an easy outdoor pick.
Fort George National Historic Site
Rebuilt War of 1812 fort with musket demonstrations in summer.
Niagara City Cruises
Boat ride into the spray at the foot of Horseshoe Falls; ponchos supplied.
Why now One to do outside while the weather is on your side.
Peller Estates Winery Restaurant
Vineyard dining room pairing local produce with estate wines and icewine.
Nearby in September
- Toronto in September~36 mi · highs 70°F, 2.6 in rain · 2°C (3°F) cooler by day, drier
- Keuka Lake in September~107 mi · highs 75°F, 3.8 in rain · 1°C (2°F) warmer by day, wetter
- Seneca Lake in September~109 mi · highs 75°F, 3.6 in rain · 1°C (2°F) warmer by day, about as wet
- Prince Edward County in September~109 mi · highs 71°F, 2.6 in rain · 1°C (2°F) cooler by day, drier
NASA POWER 2001–2025 monthly averages on a ~50 km grid. Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.
Niagara Falls & Niagara-on-the-Lake in September: quick answers
Is September a good time to visit Niagara Falls & Niagara-on-the-Lake?
Yes. On the climate data it's one of the best months, scoring 83/100. Expect highs of 73°F (23°C) and 3.2 in (81 mm) of rain. September is inside the May – Oct window our Toronto, Niagara & Prince Edward County route recommends.
How hot is Niagara Falls & Niagara-on-the-Lake in September?
Average highs are 73°F (23°C) and average lows 59°F (15°C), making it the 4th-warmest month by daytime highs.
Does it rain a lot in Niagara Falls & Niagara-on-the-Lake in September?
Some: about 3.2 in (81 mm) of rain falls across September on average, the 4th-wettest month of the year. The annual total is about 34.3 in (871 mm).
What should I pack for Niagara Falls & Niagara-on-the-Lake in September?
Bring light, breathable clothes (73°F afternoons), packable rain jacket or umbrella (about 3.2 in of rain) and comfortable walking shoes (most picks involve some walking).
More on Niagara Falls & Niagara-on-the-Lake
Routes in season in September
- Toronto, Niagara & Prince Edward County May – Oct
Planning Niagara Falls & Niagara-on-the-Lake in September?
Share this September plan with your group, poll everyone on dates and keep the packing list in one place.