Weather in Waterloo in September
Waterloo, Canada averages a high of 21°C (69.8°F) and low of 12.1°C (53.8°F) in September, with 9 rain days and 9.5 hours of daily sunshine. Travel score: 77.8/100 (Good). The best time to visit Waterloo is August.
High
21°C70°F
Low
12°C54°F
🌧️
9
rain days
☀️
9.5
hrs/day sunshine
💧
75%
humidity
78— Good
September in Waterloo is mild and occasionally wet — good for most activities.
What are the average temperatures in Waterloo?
How much does it rain in Waterloo in September?
Waterloo receives an average of 75.4mm of rainfall across 9 rainy days in September. The annual total is 888mm.
What should I pack for Waterloo in September?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
🧥
Mix of light and warm layers
Mild temperatures around 21°C
🧴
Sunscreen SPF 30+
10 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
Recommended
🧥
Light rain jacket
Some rainy days expected (9 days)
☔
Umbrella
Be prepared for occasional showers
Traveling to Canada in September?
Don't let a public holiday surprise you — restaurants, shops, and attractions may be closed.
🏛️ 121 countries·📅 Updated yearly·✈️ Free forever
Compare Waterloo
Popular comparisons:
How can I plan my trip to Waterloo?
What other cities are near Waterloo?
What are other popular cities in Canada?
What is the weather like in other months in Waterloo?
Data based on 1994–2024 averages · Last updated: 2024-12-31