Year-round weather and climate in Portland, United States
Average temperatures in Portland run from an average low of 1°C34°F in February up to an average high of 30°C86°F in July. July is the driest month at 2 rainy days; January the wettest at 22. Here is the annual climate data, so you know what you are packing for.
Good to know
- Population
- 653K
- Currency
- USD
- Language
- English
- Time zone
- Los Angeles
Best time to visit
The most pleasant weather falls in July, August, and September, offering a perfect balance of comfortable temperatures and clear skies.
Rain character
Tropical Downpours: Expect intense bursts of rain during wetter months. Pack quick-drying footwear and a compact umbrella.
Day-to-night swing
The Daypack Trap: Beware the "noon illusion". In months like July, crisp sunny days drop off a cliff by 15°C27°F at sunset. Always carry an evening layer.
Seasonality Profile
Mediterranean: Hot, bone-dry summers giving way to mild, occasionally wet winters.
Evening vibe
Cozy Indoor Culture: Evenings are generally crisp, damp, or sweltering. Nightlife centers around indoor venues.
Sightseeing stamina
All-Day Strolling: Weather is generally forgiving for long walking days. Comfortable sneakers are your most important packing item.
Average temperatures, sunshine, and rainfall
Average monthly weather in Portland, based on recent historical data. Essential insights on temperature swings, expected rainfall, and daily sunshine.
Bars span the average daily low to high. Jul is typically driest at 2 days (5mm); Jan the wettest at 22 days (226mm).
| Month | Average high | Average low | Sunshine hours | Rainy days | Total rainfall |
|---|---|---|---|---|---|
| Jan | 7°C / 45°F | 2°C / 35°F | 3h | 22 | 226mm |
| Feb | 9°C / 48°F | 1°C / 35°F | 5h | 17 | 152mm |
| Mar | 11°C / 52°F | 2°C / 36°F | 7h | 20 | 144mm |
| Apr | 14°C / 57°F | 5°C / 41°F | 8h | 17 | 139mm |
| May | 20°C / 68°F | 9°C / 47°F | 11h | 10 | 69mm |
| Jun | 23°C / 74°F | 11°C / 52°F | 12h | 7 | 41mm |
| Jul | 30°C / 86°F | 15°C / 59°F | 14h | 2 | 5mm |
| Aug | 29°C / 84°F | 15°C / 59°F | 12h | 4 | 22mm |
| Sep | 24°C / 75°F | 13°C / 55°F | 10h | 7 | 61mm |
| Oct | 18°C / 64°F | 9°C / 48°F | 7h | 12 | 136mm |
| Nov | 11°C / 51°F | 5°C / 41°F | 5h | 18 | 223mm |
| Dec | 9°C / 49°F | 4°C / 40°F | 3h | 19 | 282mm |
Weather data by Open-Meteo.com (opens in a new tab)
Frequently Asked Questions
When is the sunniest time of year to visit Portland?
The most sunshine in Portland comes around July, averaging 14 hours a month. If you're heading there then, pack your sunglasses and sunscreen.
What clothes should I pack for Portland?
Your packing list depends entirely on when you travel. Temperatures in Portland swing from an average low of 1°C34°F in February up to 30°C86°F in July. The Packola app builds a tailored packing list for you based on the live weather forecast for your exact travel dates.
Do I need to pack an umbrella for Portland?
Portland gets rain on about 155 days out of the year. The wettest month is January. If you're traveling during the rainy season, you'll definitely want to pack an umbrella and a light rain jacket.
Pack smarter.
Averages get you close, but the week you travel is what matters. Get the live forecast, a smart packing list, and discover the best local spots and activities in Portland with Packola.
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