When is the best time to visit Portland?
The best time to visit Portland is between May and October, the most comfortable stretch of the year on these averages.
Temperatures peak in August at around 21°C (71°F). December is the wettest month, with about 145 mm of rain. Portland has a distinct rainy season from October to March, peaking in December at about 145 mm. The dry season runs from April to September.
Part of United States weather.
Portland weather by month
TemperatureRainfall
Average temperature and rainfall, month by month
Every figure below is a 1991–2020 climate normal for Portland, in °C and °F. Open a month for what to expect and what to pack.
| Month | Average | Rainfall |
|---|---|---|
| January | 5°C / 42°F | 128 mm |
| February | 7°C / 44°F | 94 mm |
| March | 9°C / 48°F | 101 mm |
| April | 11°C / 53°F | 75 mm |
| May | 15°C / 59°F | 65 mm |
| June | 18°C / 64°F | 41 mm |
| July | 21°C / 70°F | 13 mm |
| August | 21°C / 71°F | 14 mm |
| September | 18°C / 65°F | 39 mm |
| October | 13°C / 55°F | 87 mm |
| November | 8°C / 47°F | 138 mm |
| December | 5°C / 41°F | 145 mm |
Where to stay in Portland
Dates are a starting point for May.
Travel guides for Portland
What to read before you book.
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FAQs about Portland weather
Climate averages for Portland, 1991–2020.
The best time to visit Portland is between May and October, the most comfortable stretch of the year on these averages.
August is the hottest month, with an average around 21°C.
December is the wettest month, with about 145 mm of rain.
Portland has a distinct rainy season from October to March, peaking in December at about 145 mm. The dry season runs from April to September.
December is the coolest month, averaging 5°C (41°F) against 21°C (71°F) in August.
This page does not show today's weather. It is a 1991–2020 climate normal from Meteostat — a long-run average of what each month is usually like, which is what you want when booking ahead. For today or the coming week, check a live forecast.
No. These are 1991–2020 climate normals from Meteostat, not a live forecast. Actual weather in any given week can differ.
