Portland weather in September (Oregon, United States of America)

Can you expect sunny skies in Portland in September? Explore our page to find a thorough overview of this month's weather conditions.

Temperatures

The weather in Portland is usually perfect in September, characterized by high temperatures and moderate rainfall. September ushers in the summer season. During the day, temperatures can climb to about 24°C. At night, they may fall to a cooler 12°C.

Precipitation

Portland in September usually receives moderate rainfall, averaging around 41 mm for the month. Typically around 8 days days of rainfall are expected.

Average sunshine

The city usually sees around 236 hours of sunlight, indicating many sunny days.

If you favor pleasant temperatures and minimal rainfall, September is one of the better months to visit Portland. May, June, July, August and September typically offer the most agreeable circumstances. On the other hand, January, March, November and December tend to be characterized by conditions that may not be as optimal.

For an in-depth look at the yearly conditions, visit our specialized Portland climate page with graphs.

 

Portland, monthly averages in September

Min Temperature 12°C  

Max Temperature 24°C  

Chance of Rain 27%  

Precipitation 41 mm  

Rainy days 8 days  

Humidity 69%  

Windspeed 7 km/h  

Sunshine 236 hours  

Percentage Sunshine  

Where to go in the United States of America in September

Find out more about the weather in the United States of America and which places have the best travel conditions in this month.

Weather conditions Weather

Temperatures

Precipitation

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Legend perfect weather pleasant tolerable unpleasant poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in this month?

For visitors traveling to Portland, we recommend wearing layers. So maybe a skirt, t-shirt, shorts for during the day and jeans and a warm jacket for some days and evenings. Bring a rain jacket in case it rains during your stay. Plan on layering your clothes.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

10/10

Cycling

10/10

Walking

10/10

Barbeque

9/10

Camping

10/10

Outdoor sports

10/10

Interested in more climate information?

This site provides you with all the information you need about the climate in Portland.

Our site offers climate and forecast data for every country in the world. Are you going to the United States of America? On this website you can find historical weather averages for many cities in the United States of America. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.