August 3 is generally a great time to visit Juneau. While there is a slight chance of rain (36%), showers are usually brief. Expect comfortable 18°C weather. As it's peak season for Juneau, we recommend booking your stay well in advance to secure the best rates.
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Essential Travel Info for Juneau
Currency
USD
$ United States dollar
Language
English
Driving
Right side
Safety
Moderate Safety
GPI: 2.44
Juneau Weather Forecast for August 3
"Mild & Comfortable. Expect average highs of 18.3°C. 36% chance of rain."
What to Wear in Juneau in August
Based on historical data for August 3, Juneau typically experiences temperatures between 12.3°C and 18.3°C. We recommend packing light jacket, long pants, umbrella to stay comfortable. With a 36% chance of rain, keeping a raincoat or umbrella handy is a smart move.
Complete Packing Guide
Weekly breakdown & essential items for Juneau
Smart Suitcase
- Light Jacket
- Long Pants
- Umbrella
Average High
18.3°C
Daytime Peak
Average Low
12.3°C
Nighttime Low
Feels Like
18.3°C
🌤️ Feels accurate
Rain Chance
36%
Avg 3.7mm if it rains
Cloud Cover
72%
Overcast
Pressure
1017.8 hPa
Medium volatility
Juneau Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 97% of the time. Safe to plan outdoor activities with confidence.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 15 for extended outdoor time
Type I-II
🔴 35 min to burn
Type III-IV
🟡 53 min to burn
Type V-VI
🟢 88 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
15.5°C
Pleasant
Heat Stress
Low
No heat warning
🙂 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
~58
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Juneau
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
03:54
☀️ Noon
12:05
🌇 Sunset
20:15
⏱️ Daylight
16h 20m
Wind Speed
7.8 km/h
Light breeze
Sunshine
9.6 hrs
Direct Sun (Cloud-free)
Humidity
84%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Juneau
Smart Flight Estimator
Airport-to-Airport Logistics
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Travel Health & Safety in Juneau
Travel Comfort Index
Real-time tourism conditions
Weather Quality
⛅ Good
Tourist Crowds
🔴 Very Busy
Price Level
💰💰💰 Expensive
Health & Wellbeing
Meteo-Health Forecast
Moderate fluctuations. Some sensitivity possible.
Weather unlikely to affect joint pain.
Moderate fish activity expected.
Air quality is excellent. Perfect for outdoor activities.
Regional Safety Profile
Seismic Activity
Rare minor tremors. Buildings are earthquake-resistant.
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Juneau on August 3 averages 18.3°C with a 36% precipitation probability. Wedding/Outdoor Event Score: 87/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Juneau Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
💡 Moving your event by a few days could significantly improve weather conditions
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Same date (August 3) in other destinations
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📍 Is Juneau Worth Visiting on August 3?
Planning a trip to Juneau on August 3? 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 18.3°C with a 36% historical precipitation risk.
✈️ Travel Logistics: Approximately 58 landing slots available daily during this period, indicating manageable crowd levels.
📊 Historical Extremes: The hottest August 3 recorded in the last 30 years saw temperatures hit 21.5°C in 2019, while the coldest dropped to 10.3°C in 2024.