Quick decision
When to visit Portland?
🌞 Best time overall
July
🌡️ Optimal temperature
14°C–28°C in July
🌧 Least rain
7% rainy days in July
🌧 Wettest month
January (61%)
📅 Best score
10.0/10
By trip type
Best time by type of trip
Craft beer & food trucksYear-round — 70+ breweries, food cart pods, farm-to-table.
Columbia River GorgeMay–Oct — Multnomah Falls, hiking, windsurfing.
Powell's & indie cultureYear-round — world's largest indie bookstore, record shops.
Rose Garden & Forest ParkMay–Jun — International Rose Test Garden, 5,200-acre urban forest.
Monthly climate data
Portland weather month by month
| Month | Min °C | Max °C | Rainy days (%) | Precip. mm/d | Sun h/d | Score |
|---|---|---|---|---|---|---|
| 🌦️ January | 2°C | 8°C | 61% | 6.2 | 3.9h | 1.4/10 |
| 🌦️ February | 2°C | 9°C | 60% | 5.4 | 5.5h | 2.2/10 |
| 🌦️ March | 3°C | 11°C | 60% | 4.7 | 8.2h | 4.0/10 |
| 🌦️ April | 5°C | 15°C | 51% | 3.7 | 10.2h | 5.6/10 |
| 🌤️ May | 9°C | 19°C | 36% | 2.4 | 11.9h | 7.3/10 |
| 🌤️ June | 12°C | 23°C | 26% | 2.0 | 13.5h | 8.3/10 |
| ☀️ July | 14°C | 28°C | 7% | 0.3 | 14.5h | 10.0/10 |
| ☀️ August | 15°C | 29°C | 9% | 0.4 | 13.0h | 9.3/10 |
| 🌤️ September | 13°C | 24°C | 25% | 2.1 | 11.3h | 8.1/10 |
| 🌦️ October | 8°C | 16°C | 42% | 4.7 | 8.2h | 5.9/10 |
| 🌦️ November | 5°C | 11°C | 58% | 6.5 | 5.4h | 3.0/10 |
| 🌦️ December | 2°C | 8°C | 61% | 6.9 | 3.8h | 1.4/10 |
Ideal
Fair
Challenging climate
Source: Open-Meteo · 10 years
Seasonal breakdown
What to expect each season
🌸 Spring (Mar–May) — Acceptable
Average 15°C, 49% rainy days, 10.1h sunshine/day. Score: 5.6/10.
☀️ Summer (Jun–Aug) — Excellent time
Average 27°C, 14% rainy days, 13.7h sunshine/day. Score: 9.2/10.
🍂 Autumn (Sep–Nov) — Acceptable
Average 17°C, 42% rainy days, 8.3h sunshine/day. Score: 5.7/10.
❄️ Winter (Dec–Feb) — Challenging climate
Average 8°C, 61% rainy days, 4.4h sunshine/day. Score: 1.7/10.
Accommodation
Find a place to stay in Portland
Check availability during the recommended period
Tip : May, June offer a good weather/price balance — decent score with fewer crowds.
Search on Hotels.comActivities & tours
Activities and tours in Portland
Guided tours, skip-the-line tickets and local experiences.
Browse activities on GetYourGuide
Flights
Find a flight to Portland
Compare flights from all airlines.
Search flights
Monthly weather
Detailed weather by month
FAQ
Frequently asked questions
July is ideal with 7% rainy days and 28°C.
January is the wettest month with 61% rainy days.
Yes, July is the best month with an average of 28°C.
In winter, the average score is 1.7/10. Difficult period — prefer the peak season.
Also explore
Destinations with similar climate
Weather rankings
Compare destinations by weather
Guides & comparisons