Norway
Oslo in August: weather & travel advice
This month's data profile
Rain shapes the decision
Oslo in August is climatically well suited to city breaks. The average daily high is around 19 °C. With about 16 rainy days it is very wet.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
56/100 · #3
Warmth
#2
Dryness
#11
Sun
#4
Published best categories: City break, Active
Oslo · AugustPhoto: JopkeB · CC BY-SA 4.0Climate facts
- Average high
- 19 °C
- Average low
- 11 °C
- Rainy days (est.)
- 16 rainy days (est.)
- Sun (est.)
- 5 h/day
- Humidity
- 84 %
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Score |
|---|---|---|---|---|---|---|---|---|
| July | 20 | 12 | 17 | 107 | 6.4 | 80 | 0.3 | 61 |
| August (selected) | 19 | 11 | 16 | 116 | 5.0 | 84 | 0.3 | 56 |
| September | 14 | 7 | 13 | 99 | 3.2 | 87 | 0.4 | 46 |
How do the previous and next months compare?
Baseline: August (56/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | |
|---|---|---|---|---|---|---|---|---|
| July | +5 | +1.3 °C | +1 °C | +0.4 | -8.9 mm | +1.4 h | -3.4 % | ±0 m/s |
| September | -10 | -4.4 °C | -3.8 °C | -3.7 | -16.5 mm | -1.8 h | +3.5 % | ±0 m/s |
All twelve months in context

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Useful next decisions
Frequently asked questions
How warm is Oslo in August?
The average daily high is around 19 °C, with an average daily low of about 11 °C.
Does it rain a lot in Oslo in August?
The curated estimate is about 16 rainy days per month, not a directly measured long-term average. Total precipitation averages around 116 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Oslo?
By the climate score, June and July are the strongest months for Oslo. August is not among them.