Oslo weather in August
August in Oslo: nice, rainy, with clean air — an excellent time to visit.
#3 of 12 months in Oslo · #199 of 604 destinations to visit in August · comfort 85/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Oslo climate normals — August
| Daytime high | 20°C / 69°F | 😎 nice |
|---|---|---|
| Nighttime low | 14°C / 56°F | |
| Feels like (high) | 20°C / 68°F | |
| Rainfall | 105 mm / 4.1 in | 🌧 rainy |
| Rainy days | 13 days | |
| Humidity | 81% | 💦 very humid |
| Dew point | 13°C / 56°F | |
| Sunshine | 10 h/day | |
| Daylight | 15.5 h | |
| Wind | 13 km/h / 8 mph | |
| Air quality (US AQI) | 35 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Oslo in August — FAQ
- Is August a good time to visit Oslo?
- August in Oslo: nice, rainy, with clean air — an excellent time to visit. It ranks #3 of 12 months for Oslo on SeasonMap's comfort score (85/100).
- What is the weather like in Oslo in August?
- In August, Oslo averages a daily high of 20.4°C and a low of 13.6°C, with about 104.6 mm of rain over roughly 13.4 rainy days.
- What is the air quality in Oslo in August?
- Oslo has a mean US Air Quality Index of about 35 in August.