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Best time to visit Portland: month by month
Short answer
July to September is dry and sunny, with highs of about 26–31°C and only 2–7 rainy days a month. Spring brings roses in May–June, while November to March is grey and rainy (15–22 rainy days), with highs of about 8–12°C.
Month by month
| Month | High | Low | Rainy days | Crowds |
|---|---|---|---|---|
| Jan | 9°C | 3°C | 18 | low |
| Feb | 8°C | 1°C | 15 | low |
| Mar | 12°C | 3°C | 20 | low |
| Apr | 15°C | 4°C | 16 | medium |
| May | 20°C | 9°C | 12 | medium |
| Jun | 25°C | 12°C | 9 | high |
| Jul | 30°C | 15°C | 2 | very high |
| Aug | 31°C | 16°C | 2 | very high |
| Sep | 26°C | 13°C | 7 | high |
| Oct | 19°C | 9°C | 12 | medium |
| Nov | 11°C | 4°C | 16 | low |
| Dec | 8°C | 2°C | 22 | low |
Temperatures and rainy days: Copernicus ERA5 averages, 2021–2023. Crowd levels are our estimate.
Season by season
Spring (Mar–May)
Highs rise from 12°C in March to 20°C in May, with blossoms and the start of rose season. Still showery, with 12–20 rainy days.
Summer (Jun–Aug)
The best weather: highs of 25–31°C, lows of 12–16°C and very little rain in July and August. Occasional heatwaves and wildfire smoke.
Autumn (Sep–Nov)
September is warm and dry at about 26°C; October (19°C) brings autumn colours; November cools to 11°C and the rain returns.
Winter (Dec–Feb)
Grey and wet, with highs of 8–9°C and lows of 1–3°C and 15–22 rainy days. Waterfalls are full; snow is occasional in the city.
Events worth planning around
- Portland Rose Festival, with parades and the waterfront fair (late May to June)
- Waterfront Blues Festival (around 4 July)
- Oregon Brewers Festival (summer)
- Feast Portland food festival (September)
When to avoid
If you want sun, avoid November to March, when rain is frequent and days are short. Late August and September can bring wildfire smoke in some years.
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Common questions
What is the best time to visit Portland?
July to September, with highs of 26–31°C and little rain.
Does it rain a lot in Portland?
From November to March, yes, with 15–22 rainy days a month; summer is dry.
When do the roses bloom in Portland?
Usually from late May through June, around the Rose Festival.