Portland Weather in August

August in Portland sees daytime temperatures around 28°C (82°F) and lows of 16°C (61°F) at night. With around 103 mm (4.1 in) of rainfall expected, it's worth packing a rain jacket.

Rainfall in Portland in August

Typically, you can expect about 9 days of rain this month, with 103 mm (4.1 in) on average. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.

Temperature in Portland in August

Portland in August gets highs of 28°C (82°F) during the day and drops to 16°C (61°F) at night. Overall, the month follows a fairly predictable daily temperature pattern. Nights cool down to 16°C (61°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.

Sunshine in Portland in August

Enjoy a sunny month with about 317 hours of sunshine, the clear skies make Portland even more beautiful.

If you prefer dry days with pleasant temperatures, July and September typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

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For a detailed overview over the year and the best time to visit the United States of America, check out our Portland's climate page.

Portland Temperature in August

Min Temperature 16°C (61°F)  

Max Temperature 28°C (82°F)  

Chance of Rain 30%  

Precipitation 103 mm (4.1 in)  

Rainy days 9 days  

Humidity 72% *  

Sunshine 317 hours *  

Percentage Sunshine 75% *  

* Data from: Fort Wayne, the United States of America (73 KM, 45 Miles).

What to Wear in Portland in August

Warm weather calls for comfortable, breathable clothing in August. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). High rain levels are expected, so pack waterproof gear and an umbrella or poncho. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in Portland in August

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

Swimming

9/10

Cycling

7/10

Walking

7/10

Camping

6/10

Outdoor sports

7/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Portland's climate page.

More climate data for Portland

Temperature Rainfall Sunshine Humidity

See the full Portland climate overview or explore weather in the United States of America.