August 14 is statistically one of the best days of the year in Portland. With minimal rain risk (6%) and pleasant highs of 29°C, it's ideal for outdoor adventures. Portland is currently in its most popular travel window, meaning vibrant crowds and premium pricing.
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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 August 14
"Warm & Sunny. Expect average highs of 29.3°C. 6% chance of rain."
What to Wear in Portland in August
Based on historical data for August 14, Portland typically experiences temperatures between 15.5°C and 29.3°C. We recommend packing t-shirt, light clothing, layers (onion system) to stay comfortable. Trends suggest it will stay mostly dry (6% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for Portland
Smart Suitcase
- T-Shirt
- Light Clothing
- Layers (Onion System)
Average High
29.3°C
Daytime Peak
Average Low
15.5°C
Nighttime Low
Feels Like
31.2°C
🔥 Minor difference
Rain Chance
6%
Avg 0.1mm if it rains
Cloud Cover
32%
Overcast
Pressure
1015.9 hPa
Low volatility
Portland Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
~ Weather is generally predictable, but pack for minor variations. A light backup layer is recommended.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 30 recommended
05:00 - 10:00
16:00 - 19:00
Type I-II
🔴 16 min to burn
Type III-IV
🟡 24 min to burn
Type V-VI
🟢 40 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
20.2°C
Humid/Sticky
Heat Index
31.2°C
Feels hotter
🙂 Best outdoor time:
Any time during daylight hours
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in United States
Flight Traffic
High
100/100 pressure index
Health Advisory
Healthy
Routine only • View Details →
Landing Slots
~326
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Portland
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
05:11
☀️ Noon
12:16
🌇 Sunset
19:22
⏱️ Daylight
14h 10m
Wind Speed
11.9 km/h
Light breeze
Sunshine
11.8 hrs
Direct Sun (Cloud-free)
Humidity
58%
Comfortable
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
☀️ Excellent
Tourist Crowds
🔴 Very 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 August 14 averages 29.3°C with a 6% precipitation probability. Wedding/Outdoor Event Score: 100/100."
— 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
Compare Other Cities
Same date (August 14) in other destinations
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📍 Is Portland Worth Visiting on August 14?
Planning a trip to Portland on August 14? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year typically offers vibrant summer conditions averaging 29.3°C with a 6% historical precipitation risk.
✈️ Travel Logistics: Approximately 326 landing slots available daily during this period, indicating manageable crowd levels.
📊 Historical Extremes: The hottest August 14 recorded in the last 30 years saw temperatures hit 41.2°C in 2023, while the coldest dropped to 11.6°C in 2017.