May 26 is generally a great time to visit Portland. While there is a slight chance of rain (26%), showers are usually brief. Expect comfortable 20°C weather. Portland is currently in its most popular travel window, meaning vibrant crowds and premium pricing. Note: May 26 is Memorial Day in Portland, so expect special events, closures, and festive atmosphere.
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Essential Travel Info for Portland
Currency
USD
$ United States dollar
Language
English
Driving
Right side
Safety
Moderate Safety
GPI: 2.44
Portland Weather Forecast for May 26
"Mild & Comfortable. Expect average highs of 19.8°C. 26% chance of rain."
What to Wear in Portland in May
Based on historical data for May 26, Portland typically experiences temperatures between 9.7°C and 19.8°C. We recommend packing light jacket, long pants to stay comfortable. With a 26% chance of rain, keeping a raincoat or umbrella handy is a smart move.
Complete Packing Guide
Weekly breakdown & essential items for Portland
Smart Suitcase
- Light Jacket
- Long Pants
Average High
19.8°C
Daytime Peak
Average Low
9.7°C
Nighttime Low
Feels Like
19.8°C
🌤️ Feels accurate
Rain Chance
26%
Avg 1.7mm if it rains
Cloud Cover
67%
Overcast
Pressure
1016.5 hPa
Low volatility
Portland Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 90% of the time. Safe to plan outdoor activities with confidence.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 30 recommended
04:00 - 10:00
16:00 - 19:00
Type I-II
🔴 19 min to burn
Type III-IV
🟡 29 min to burn
Type V-VI
🟢 48 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
14.8°C
Pleasant
Heat Stress
Low
No heat warning
😊 Best outdoor time:
Any time during daylight hours
Travel & Logistics Insights
Local Calendar
Holiday
Memorial Day
Flight Traffic
High
88/100 pressure index
Health Advisory
Healthy
Routine only • View Details →
Landing Slots
~287
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Portland
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
04:30
☀️ Noon
12:09
🌇 Sunset
19:47
⏱️ Daylight
15h 16m
Wind Speed
12 km/h
Gentle breeze
Sunshine
9.8 hrs
Direct Sun (Cloud-free)
Humidity
73%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Portland
Smart Flight Estimator
Airport-to-Airport Logistics
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Travel Health & Safety in Portland
Travel Comfort Index
Real-time tourism conditions
Weather Quality
⛅ Good
Tourist Crowds
🟡 Busy
Price Level
💰💰💰 Expensive
Health & Wellbeing
Meteo-Health Forecast
Stable conditions. Low risk of headaches.
Weather unlikely to affect joint pain.
Moderate fish activity expected.
Air quality is acceptable. Sensitive individuals should limit prolonged outdoor exertion.
Regional Safety Profile
Seismic Activity
Rare minor tremors. Buildings are earthquake-resistant.
Volcanic Activity
Nearest: Mount St. Helens
84km away
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Portland on May 26 averages 19.8°C with a 26% precipitation probability. Wedding/Outdoor Event Score: 95/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Portland Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
May 31
21.2°C • 19% rain
Score
99
June 1
21.4°C • 17% rain
Score
99
May 30
20.8°C • 22% rain
Score
98
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (May 26) in other destinations
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📍 Is Portland Worth Visiting on May 26?
Planning a trip to Portland on May 26? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year is characterized by pleasant mild weather averaging 19.8°C with a 26% historical precipitation risk.
🎉 Local Event: The date coincides with Memorial Day, which may influence local business hours and event availability.
✈️ Travel Logistics: Approximately 287 landing slots available daily during this period, indicating manageable crowd levels.
📊 Historical Extremes: The hottest May 26 recorded in the last 30 years saw temperatures hit 27.5°C in 2023, while the coldest dropped to 5.3°C in 2024.