Niagara on the Lake Weather in September
September in Niagara on the Lake averages 17°C (63°F) during the day and 9°C (48°F) at night. Around 60 mm (2.4 in) of rainfall is typical for this time of year.
Rainfall in Niagara on the Lake in September
Typically around 9 days of rainfall are expected, averaging 60 mm (2.4 in) for the month. Expect a fairly normal spread of rainfall this month, with no particular pattern of very heavy or very persistent showers.
Temperature in Niagara on the Lake in September
Temperatures in Niagara on the Lake in September top out at 17°C (63°F) and drop to 9°C (48°F) overnight. The difference between afternoon and evening temperatures is usually noticeable. Nights fall to 9°C (48°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.
Sunshine in Niagara on the Lake in September
The month enjoys around 206 hours of sunshine, creating mostly sunny days with good weather conditions.If your ideal day consists of dry skies and pleasant temperatures, July and August typically offer the best circumstances for Niagara on the Lake.
Niagara on the Lake Temperature in September
Min Temperature
Max Temperature
Chance of Rain
Precipitation
Rainy days
Humidity
Sunshine
Percentage Sunshine
Niagara on the Lake Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Niagara on the Lake - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Niagara on the Lake typically drop from around 24°C (75°F) at the start of September to approximately 19°C (66°F) by the end. Nights are cool, with lows typically ranging from 11°C (52°F) to 17°C (63°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 on the Lake in September
Browse day-by-day weather records for Niagara on the Lake spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Niagara on the Lake historical weather extremes in September
Our historical data for Niagara on the Lake spans 1976 to 2025, revealing these weather extremes.
- The warmest day in September was on September 6, 2007, with a maximum of 33°C (91°F).
- On September 30, 1993, Niagara on the Lake saw its coldest September day with temperatures maxing out at 10°C (50°F).
- The coldest night in September in Niagara on the Lake was on September 19, 2004, with a minimum of 2°C (36°F).
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 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 on the Lake in September
Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Wet weather is likely, so pack waterproof gear for multiple rainy days. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.
What To Do in Niagara on the Lake in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
-
Cycling6/10 -
Walking6/10 -
Camping4/10 -
Outdoor sports10/10
Niagara on the Lake 3-Day Forecast
Temperature Rainfall Sunshine Humidity
See the full Niagara on the Lake 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.
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.