Portland weather in September
Mild and comfortable, with occasional showers. Average highs of 21°C and lows of 14°C, with around 8 rainy days expected throughout the month.
While September isn't our top-rated month for Portland, it has its own appeal — typically lower prices, fewer crowds, and a more local feel.
Average high
21°C
Average low
14°C
Rainy days
8 days
Best months to visit
July, August
What to do in Portland in September
Whatever the weather, Portland rewards curious visitors. Here are some of the best ways to spend your time:
Explore
Dine
Culture
Nature
Shopping
Day trips
What to pack for September
Light layers work well — T-shirts and shorts for the day, a light jacket for evenings. Comfortable walking shoes are a must. Bring a compact umbrella just in case.
Browse other months
January
1C
Cold, with some rainy days.
February
1C
Cold, with some rainy days.
March
5C
Cold, with some rainy days.
April
11C
Cool, with some rainy days.
May
17C
Cool, with occasional showers.
June
22C
Mild and comfortable, with some rainy days.
Recommended
July
25C
Warm and pleasant, with some rainy days.
Recommended
August
25C
Warm and pleasant, with occasional showers.
September (you are here)
21C
Mild and comfortable, with occasional showers.
October
15C
Cool, with some rainy days.
November
8C
Cold, with occasional showers.
December
4C
Cold, with some rainy days.
Book your September trip to Portland
Find hotels, tours and experiences for the perfect escape.
