Norway Oslo Weather in August — Climate Guide
August in Oslo is very-high
Oslo Weather in August — Quick Answer
As of 2026- Avg temp
- 22° / 12°
- Rainfall
- 90mm · 11 days
- Crowds
- Very busy
As of 2026, Oslo in August averages a high of 22°C and low of 12°C with 90mm of rain over about 11 days. Late summer warm — t-shirt + shorts + sweater evening. Daylight shortening (sunset 21:00 end of month). Increased rain — pack waterproof shell.
August is very-high for Oslo.
August is Oslo's late-summer prime month — high 22°C / 72°F, low 12°C / 54°F. Daylight shortening — sunset 21:00 end of month. Fellesferie ends mid-month, locals return.
Oslo Jazz Festival mid-August across 30+ venues — Norwegian + international jazz lineup at Cosmopolite, Herr Nilsen, Sentrum Scene, Opera House, Bjørvika harbor stage. Ticket prices $20-80 per show, multi-day passes $150-300. The canonical Oslo summer cultural event.
Travel score
Oslo August Weather Stats
Avg High
22°C
Avg Low
12°C
Rainy Days
11
90mm total
Sunshine
7h
Daily avg
Humidity
70%
moderate
UV Index
5
Moderate
Wind
9 km/h
Gusts 25
Sea Temp
16°C
swimming chilly
Crowds
Very busy
At attractions
August Sunrise & Sunset
Air Quality
PM2.5
6 μg/m³
PM10
15 μg/m³
Status
good
Feels-Like Temperature & Wind
Feels like
Daytime
22°C
Nighttime
11°C
Humidity and wind affect how the actual temperature feels.
Wind
9 km/h
Max gust 25 km/h
Activities Recommended for August
August Travel Pros & Cons
Pros
- Oslo Jazz Festival mid-August (canonical cultural event)
- Mela World Music Festival (free)
- Sea swimming season continues
- Locals back from Fellesferie mid-August
- Daylight still long
Cons
- Increased rainfall (11 rainy days)
- Hotel pricing still high
- Crowds at peak attractions still
- Daylight shortening end of month
August Events & Festivals
- Oslo Jazz Festival (mid-August, 30+ venues)
- Mela World Music Festival (mid-August, free)
- Norwegian Fellesferie summer vacation ends mid-month
Oslo in August — Full Picture
August is Oslo's late-summer prime month — high 22°C / 72°F, low 12°C / 54°F. Daylight shortening — sunset 21:00 end of month. Fellesferie ends mid-month, locals return.
Oslo Jazz Festival mid-August across 30+ venues — Norwegian + international jazz lineup at Cosmopolite, Herr Nilsen, Sentrum Scene, Opera House, Bjørvika harbor stage. Ticket prices $20-80 per show, multi-day passes $150-300. The canonical Oslo summer cultural event.
Mela World Music Festival (mid-August at Rådhusplassen, free) — multicultural Oslo music + food festival.
Weather variable — rain probability increases (90mm rainfall, 11 rainy days). Pack waterproof shell + layered clothing.
Sea swimming season at Sørenga + Tjuvholmen + Huk Bygdøy continues. Outdoor cafe season tapering off late month.
The smart August move: target the first 2 weeks (peak Jazz Festival + summer weather) or the last week (locals back, weather still warm enough). Combine with Norway in a Nutshell day trip while Bergensbanen runs daily.
What to Wear & What to Pack
Late summer warm — t-shirt + shorts + sweater evening. Daylight shortening (sunset 21:00 end of month). Increased rain — pack waterproof shell.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
9.3°C
1.3°C
8.7/mo
Summer (Jun·Jul·Aug)
Current21.7°C
11.7°C
10.7/mo
Autumn (Sep·Oct·Nov)
11°C
4°C
11.3/mo
Winter (Dec·Jan·Feb)
-1°C
-6°C
8.7/mo
Oslo Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| -2° | -7° | 9d·50mm | 1h | 80% | 0 | Quiet | Low season | |
| -1° | -7° | 7d·40mm | 2h | 78% | 1 | Quiet | Low season | |
| 3° | -3° | 8d·50mm | 4h | 75% | 2 | Moderate | Shoulder | |
| 9° | 1° | 9d·50mm | 6h | 70% | 3 | Moderate | Shoulder | |
| May (Best) | 16° | 6° | 9d·60mm | 8h | 65% | 5 | Very busy | Peak |
| June (Best) | 20° | 10° | 10d·70mm | 9h | 65% | 6 | Very busy | Peak |
| July (Best) | 23° | 13° | 11d·80mm | 9h | 65% | 6 | Very busy | Peak |
| August (Best) | 22° | 12° | 11d·90mm | 7h | 70% | 5 | Very busy | Peak |
| 17° | 8° | 11d·90mm | 5h | 75% | 3 | Busy | Shoulder | |
| 11° | 4° | 12d·100mm | 3h | 80% | 2 | Moderate | Shoulder | |
| 5° | 0° | 11d·80mm | 1h | 80% | 1 | Quiet | Low season | |
| 0° | -4° | 10d·60mm | 1h | 82% | 0 | Busy | Peak |
View Other Months
Oslo August Hotel Picks
Frequently Asked Questions
Is August a good time to visit Oslo?
Oslo in August is very-high. Tourist crowds are very busy and flight/hotel prices are peak.
What's the average temperature in Oslo in August?
Oslo August averages a high of 22°C and a low of 12°C.
Does it rain much in Oslo in August?
Oslo August averages 90mm of rainfall over about 11 rainy days.
What should I wear in Oslo in August?
Late summer warm — t-shirt + shorts + sweater evening. Daylight shortening (sunset 21:00 end of month). Increased rain — pack waterproof shell.
What time are sunrise and sunset in Oslo in August?
Oslo August sunrise is 05:15 and sunset is 21:30, with 16h 15m of daylight.
What's the air quality like in Oslo in August?
Oslo August air quality (AQI) averages 23, rated Good. PM2.5 averages 6μg/m³.
What activities are recommended in Oslo in August?
In August, Oslo is great for Oslo Jazz Festival 30+ venues, Mela World Music Festival Rådhusplassen, Oslofjord cruise.
Is August peak season in Oslo?
Oslo August crowds are very busy and prices are peak. Advance reservations are strongly recommended.
Best Months to Visit Oslo
View Other Months
Planning a August trip to Oslo?
You've checked the weather — next come the budget and the route.
Why you can trust weather guide
Based in Chiang Mai for 8+ years, with 30+ countries visited across Southeast Asia, Japan, and Europe. Every detail in this guide is primary-source verified as of April 2026, with prices auto-refreshed via live exchange rate APIs. This isn't AI-generated boilerplate — it's written from the perspective of someone who has actually been there.