Niagara Falls weather in September
Temperature, rain and sunshine in September: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in September
Good
Best time to visit: May – September
What is the weather like in Niagara Falls in September?
In September, Niagara Falls is warm: daytime highs average 22 °C, and nights cool down to about 15 °C. Expect around 6 hours of sunshine a day. Rain is frequent, with about 10 rainy days and 82 mm in total. All in all, September is a good month for a holiday in Niagara Falls.
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 79 | 78 | 51 |
| Day | 25° | 22° | 15° |
| Night | 18° | 15° | 9° |
| Sun | 8 h | 6 h | 4 h |
| Rain days | 11 | 10 | 13 |
More details for September
- Daylight
- 12 h 34 min06:55 – 19:29
- UV index
- 6 · highclear sky, noon (estimate)All months
- Muggy days
- 3 daysdew point 18 °C or moreAll months
- Wind
- 19 km/haverage daily peakAll months
- Cloud cover
- 52 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Snow days
- 0 days1 cm or more of fresh snowAll months
- Time zone
- UTC−4America/Toronto
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %53 %
- Few rainy daysweight 30 %56 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in September
- Sunscreen
- A jumper for the evenings
- Rain jacket or umbrella
Niagara Falls in September: quick answers
Is Niagara Falls hot in September?
Warm rather than hot: in September, daytime highs in Niagara Falls average 22 °C and nights cool to about 15 °C.
Does it rain much in Niagara Falls in September?
Rain is frequent, with about 10 rainy days and 82 mm in total.
Niagara Falls month by month
The whole year in Niagara FallsAll destinations: CanadaWhere to go in September
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences