September · Canada
Best time to visit Niagara Falls in September Weather, crowds & prices
Weather in Niagara Falls in September
Average temperature 18°C, 83 mm of rain, about 25 days with 6+ hours of sunshine and 76% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
8.7/10
Ranked #3 of 12 months
- Avg temp
- 18°C
- Rainfall
- 83 mm
- Humidity
- 76%
- Days with 6h+ sun
- 25
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
September in Niagara Falls scores 8.7/10 for nature and wildlife travel - one of the top 12-month picks (#3). Expect around 18°C, 83 mm of rain, and roughly 25 days with 6+ hours of sunshine this month.
Misty overlooks and boat rides shine April through September.
September is one of the strongest months in Niagara Falls (3rd)
September averages 18°C (65°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
Rainfall runs 83 mm, so plan one flexible day in three; you still get about 25 days with 6+ hours of sunshine and 12.5 hours of daylight.
A 8.7/10 puts this among the year's best months in Niagara Falls (3rd of 12); only May scores higher, at 9.1/10.
Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer, footwear you can get muddy.
Plan for mid-season pricing, with crowds are moderate.
Frequently asked
- What is the weather like in Niagara Falls in September?
- In September, Niagara Falls averages 18°C, 83 mm of rain, and about 25 days with 6+ hours of sunshine. Its climate-comfort score is 8.7/10.
- Is September a good time to visit Niagara Falls?
- September earns a 8.7/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Niagara Falls in September?
- Expect about 83 mm of rain in September. Average humidity is 76% and there are about 25 days with 6+ hours of sunshine.
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Tickets & experiences
Things to do in Niagara Falls
Niagara Falls, Canada. Live activities and tours from GetYourGuide, matched to this destination.