August · Norway
Best time to visit Oslo in August Weather, crowds & prices
Weather in Oslo in August
Average temperature 15°C, 168 mm of rain, about 13 days with 6+ hours of sunshine and 85% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
August score
6.2/10
Ranked #4 of 12 months
- Avg temp
- 15°C
- Rainfall
- 168 mm
- Humidity
- 85%
- Days with 6h+ sun
- 13
- Crowd Density
- Peak Tourist Rush
- Average Expenses
- $$ · Moderate Cost ($$)
August in Oslo scores 6.2/10 for sightseeing and cultural travel - an above-average month (#4 of 12). Expect around 15°C, 168 mm of rain, and roughly 13 days with 6+ hours of sunshine this month.
Fjord trails, sculpture parks, and modern waterfront culture peak May through September.
August in Oslo — workable with trade-offs
Temperatures hover around 15°C (59°F) — the kind of month where neither heat nor cold forces the schedule.
168 mm of rain signals a properly wet month, with only about 13 days with 6+ hours of sunshine to count on — build indoor options into the schedule.
That is 6.2/10 on the same scale — 4th of 12 months, versus 8.3/10 for the best month here.
Pack layers you can shed by midday plus one warm layer for the evening, a proper rain shell rather than an umbrella.
Budget for mid-season pricing, and this is one of the busiest months here.
If your dates are flexible, May is materially better in Oslo — 2.1 points higher on the same scale.
Frequently asked
- What is the weather like in Oslo in August?
- In August, Oslo averages 15°C, 168 mm of rain, and about 13 days with 6+ hours of sunshine. Its climate-comfort score is 6.2/10.
- Is August a good time to visit Oslo?
- August earns a 6.2/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Oslo in August?
- Expect about 168 mm of rain in August. Average humidity is 85% and there are about 13 days with 6+ hours of sunshine.
Curated in Oslo
Tickets & experiences
Things to do in Oslo
Oslo, Norway. Live activities and tours from GetYourGuide, matched to this destination.