August 15 is generally a great time to visit Oslo. While there is a slight chance of rain (27%), showers are usually brief. Expect comfortable 21°C weather. Oslo is currently in its most popular travel window, meaning vibrant crowds and premium pricing.
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Essential Travel Info for Oslo
Currency
NOK
kr Norwegian krone
Language
Norwegian Nynorsk
+2 more
Driving
Right side
Connect
Most of Oslo is covered by 5G. Most of t...
Safety
Very High Safety
GPI: 1.465
Oslo Weather Forecast for August 15
"Mild & Comfortable. Expect average highs of 20.8°C. 27% chance of rain."
What to Wear in Oslo in August
Based on historical data for August 15, Oslo typically experiences temperatures between 13.5°C and 20.8°C. We recommend packing light jacket, long pants to stay comfortable. With a 27% chance of rain, keeping a raincoat or umbrella handy is a smart move.
Complete Packing Guide
Weekly breakdown & essential items for Oslo
Smart Suitcase
- Light Jacket
- Long Pants
Average High
20.8°C
Daytime Peak
Average Low
13.5°C
Nighttime Low
Feels Like
20.9°C
☀️ Feels accurate
Rain Chance
27%
Avg 1.9mm if it rains
Cloud Cover
61%
Overcast
Pressure
1011.2 hPa
Medium volatility
Oslo Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 85% 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
🔴 31 min to burn
Type III-IV
🟡 47 min to burn
Type V-VI
🟢 78 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
16.8°C
Noticeable
Heat Stress
Low
No heat warning
😊 Best outdoor time:
Any time during daylight hours
Marine Conditions
Marine Life
No special warnings. Enjoy the swim!
Swim Index
⚠️ Mixed Conditions
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in Norway
Flight Traffic
High
90/100 pressure index
Health Advisory
Required
1 vaccine • View Details →
Landing Slots
~330
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Oslo
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
04:32
☀️ Noon
12:22
🌇 Sunset
20:13
⏱️ Daylight
15h 41m
Wind Speed
14 km/h
Gentle breeze
Sunshine
10.5 hrs
Direct Sun (Cloud-free)
Humidity
78%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Oslo
Smart Flight Estimator
Airport-to-Airport Logistics
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Travel Health & Safety in Oslo
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.
Mild discomfort possible for arthritic conditions.
Moderate fish activity expected.
Air quality is excellent. Perfect for outdoor activities.
Regional Safety Profile
Seismic Activity
Zero seismic activity detected in 30 years.
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Oslo on August 15 averages 20.8°C with a 27% precipitation probability. Wedding/Outdoor Event Score: 96/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Oslo Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
August 17
20.5°C • 21% rain
Score
98
August 18
20.3°C • 20% rain
Score
98
August 19
20.1°C • 23% rain
Score
98
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (August 15) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Oslo Worth Visiting on August 15?
Planning a trip to Oslo on August 15? 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 20.8°C with a 27% historical precipitation risk.
✈️ Travel Logistics: Approximately 330 landing slots available daily during this period, indicating manageable crowd levels.
💉 Health Advisory: 7 vaccinations are recommended for Norway, including COVID-19.
🌊 Coastal Conditions: Water temperature averages 19°C (refreshing tonic). Wave conditions are generally lake-like with heights around 0.2m.
📊 Historical Extremes: The hottest August 15 recorded in the last 30 years saw temperatures hit 28.4°C in 2022, while the coldest dropped to 10.2°C in 2019.