July
Best time
28.5°C / 14.7°C
5 rain days
hot
- very low rainfall (only 5 rain days)
- outside peak hazard season
- warm evenings without humidity overload
Best time to visit Portland
Portland, United States — ranked month by month from data: temperature, rainfall, snow, and peak hazard seasons. The standouts: July, June.
Best months to visit
June
Best time
23.8°C / 12°C
12 rain days
warm, rainy
- comfortable temperatures (avg high 23.8°C / 75°F)
- outside peak hazard season
OK — shoulder months
May
OK
19.9°C / 9.4°C
15 rain days
mild, rainy
- comfortable temperatures (avg high 19.9°C / 68°F)
- outside peak hazard season
Months to skip
April
Skip
15.3°C / 5.5°C
19 rain days
cool, very wet
- extremely wet (19 rain days)
March
Skip
12.1°C / 3.4°C
21 rain days
cool, very wet
- extremely wet (21 rain days)
November
Skip
10.7°C / 4.2°C
20 rain days
cool, very wet
- extremely wet (20 rain days)
February
Skip
8.8°C / 1.7°C
20 rain days
chilly, very wet
- extremely wet (20 rain days)
January
Skip
8.5°C / 2.2°C
21 rain days
chilly, very wet
- extremely wet (21 rain days)
December
Skip
7.4°C / 2.1°C
21 rain days
chilly, very wet
- extremely wet (21 rain days)
August
Skip
29°C / 15.3°C
7 rain days
⚠ peak season
hot
- peak hurricane season
September
Skip
23.8°C / 12.4°C
12 rain days
⚠ peak season
warm, rainy
- peak hurricane season
October
Skip
17.2°C / 8.6°C
17 rain days
⚠ peak season
mild, very wet
- heavy rain expected (17 days)
- peak hurricane season
How we ranked these
Each month is scored on temperature comfort (18–27°C avg high is the sweet spot), rainfall (more rain days = lower score), snow days, and peak hazard seasons (hurricanes, monsoons, etc.). Green-tier months are within ideal range with no major issues. Yellow are workable but with trade-offs. Red has at least one significant problem — extreme heat or cold, heavy rain, or peak storm season.