Tromsø weather in August
August in Tromsø: cool, rainy, with clean air — an excellent time to visit.
#3 of 12 months in Tromsø · #280 of 604 destinations to visit in August · comfort 81/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Tromsø climate normals — August
| Daytime high | 16°C / 60°F | 🙂 cool |
|---|---|---|
| Nighttime low | 10°C / 50°F | |
| Feels like (high) | 15°C / 59°F | |
| Rainfall | 126 mm / 4.9 in | 🌧 rainy |
| Rainy days | 17 days | |
| Humidity | 82% | 💦 very humid |
| Dew point | 11°C / 52°F | |
| Sunshine | 8.2 h/day | |
| Daylight | 18 h | |
| Wind | 13 km/h / 8 mph | |
| Air quality (US AQI) | 28 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Tromsø in August — FAQ
- Is August a good time to visit Tromsø?
- August in Tromsø: cool, rainy, with clean air — an excellent time to visit. It ranks #3 of 12 months for Tromsø on SeasonMap's comfort score (81/100).
- What is the weather like in Tromsø in August?
- In August, Tromsø averages a daily high of 15.7°C and a low of 10.2°C, with about 125.6 mm of rain over roughly 17.2 rainy days.
- What is the air quality in Tromsø in August?
- Tromsø has a mean US Air Quality Index of about 28 in August.