Weather in Oshawa in September
Oshawa, Canada averages a high of 21.1°C (70°F) and low of 14.5°C (58.1°F) in September, with 9 rain days and 9.8 hours of daily sunshine. Travel score: 80.6/100 (Excellent). The best time to visit Oshawa is August.
High
21°C70°F
Low
15°C58°F
🌧️
9
rain days
☀️
9.8
hrs/day sunshine
💧
74%
humidity
81— Excellent
September in Oshawa is mild and occasionally wet — excellent conditions for exploring.
What are the average temperatures in Oshawa?
How much does it rain in Oshawa in September?
Oshawa receives an average of 76.1mm of rainfall across 9 rainy days in September. The annual total is 872.6mm.
What should I pack for Oshawa in September?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
🧥
Mix of light and warm layers
Mild temperatures around 21°C
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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
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Data based on 1994–2024 averages · Last updated: 2024-12-31