Weather in Portland in September
Portland, United States averages a high of 20.2°C (68.4°F) and low of 13.9°C (57°F) in September, with 8 rain days and 9.3 hours of daily sunshine. Travel score: 78.5/100 (Good). The best time to visit Portland is August.
High
20°C68°F
Low
14°C57°F
🌧️
8
rain days
☀️
9.3
hrs/day sunshine
💧
78%
humidity
79— Good
September in Portland is mild and occasionally wet — good for most activities.
What are the average temperatures in Portland?
How much does it rain in Portland in September?
Portland receives an average of 90mm of rainfall across 8 rainy days in September. The annual total is 1105.6mm.
What should I pack for Portland in September?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
🧥
Mix of light and warm layers
Mild temperatures around 20°C
🧴
Sunscreen SPF 30+
9 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
Recommended
🧥
Light rain jacket
Some rainy days expected (8 days)
☔
Umbrella
Be prepared for occasional showers
🎉Visiting United States in September?
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Data based on 1994–2024 averages · Last updated: 2024-12-31