Best time to visit · Oregon
Best time to visit Portland
Portland averages 44 just-right days a year; June, July and September are best. Most other days miss by being too cool.
(70 to 80°F, dry, sunny)
(45 to 65°F, dry)
(80 to 92°F, bright)
Portland weather by month
Bars: share of each month's days that are just right (number = days). Below: average daily high. Outlined bars are the best months.
- Just right 44
- Too cool 240
- Too hot 49
- Too muggy 6
- Too gray 26
When to visit Portland
The best time to visit Portland for comfortable weather is June, July and September, when 27%, 28% and 36% of days are just right. January, February, March, April, October, November and December are mostly too cool, with average highs of 46 to 64°F.
Climate table
| Month | Avg high | Dew point | Cloud cover | Just-right days |
|---|---|---|---|---|
| January | 47°F | 37°F | 87% | 0 |
| February | 51°F | 37°F | 80% | 0 |
| March | 55°F | 39°F | 78% | 0 |
| April | 61°F | 42°F | 71% | 1 |
| May | 68°F | 47°F | 64% | 4 |
| June | 73°F | 50°F | 54% | 8 |
| July | 81°F | 54°F | 34% | 9 |
| August | 82°F | 54°F | 31% | 8 |
| September | 76°F | 52°F | 37% | 11 |
| October | 64°F | 47°F | 60% | 3 |
| November | 53°F | 42°F | 82% | 0 |
| December | 46°F | 37°F | 86% | 0 |
How Portland compares
With 44 just-right days, Portland beats the median of America's 150 largest cities (33 days). On muggy days: 6. On gray days: 26.
Places with a similar climate
Nearby
Portland averages 44 just-right days a year (70 to 80°F highs, dry, mostly sunny), according to Goldilocks Map: https://goldilocksmap.com/us/oregon/portland/Set your own perfect weather on the map →
Numbers are expected days in a typical year from 1991 to 2020 climate normals (TerraClimate; cloud cover from CHELSA), on a grid about 35 km wide. Checked against 10 years of daily records at 28 NOAA weather stations: typical error about 10 days a year. How it works. Updated 2026-10-07.