Weather in Portland in May
Portland, United States averages a high of 15.8°C (60.4°F) and low of 8.4°C (47.1°F) in May, with 10 rain days and 9.9 hours of daily sunshine. Travel score: 71.5/100 (Good). The best time to visit Portland is August.
High
16°C60°F
Low
8°C47°F
🌧️
10
rain days
☀️
9.9
hrs/day sunshine
💧
74%
humidity
72— Good
May in Portland is mild and occasionally wet — good for most activities.
What are the average temperatures in Portland?
How much does it rain in Portland in May?
Portland receives an average of 78.4mm of rainfall across 10 rainy days in May. The annual total is 1105.6mm.
What should I pack for Portland in May?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
🧥
Mix of light and warm layers
Mild temperatures around 16°C
Recommended
🧥
Light rain jacket
Some rainy days expected (10 days)
☔
Umbrella
Be prepared for occasional showers
🧴
Sunscreen
Sun protection is still recommended
🕶️
Sunglasses
Useful for sunny periods
Traveling to United States in May?
Don't let a public holiday surprise you — restaurants, shops, and attractions may be closed.
🏛️ 121 countries·📅 Updated yearly·✈️ Free forever
Compare Portland
Popular comparisons:
How can I plan my trip to Portland?
What other cities are near Portland?
What are other popular cities in United States?
What is the weather like in other months in Portland?
Data based on 1994–2024 averages · Last updated: 2024-12-31