Reykjavík weather in August
August in Reykjavík: cool, rainy, with clean air — one of the best months to visit.
#2 of 12 months in Reykjavík · #242 of 604 destinations to visit in August · comfort 83/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Reykjavík climate normals — August
| Daytime high | 14°C / 57°F | 🙂 cool |
|---|---|---|
| Nighttime low | 9°C / 48°F | |
| Feels like (high) | 12°C / 54°F | |
| Rainfall | 84 mm / 3.3 in | 🌧 rainy |
| Rainy days | 14 days | |
| Humidity | 82% | 💦 very humid |
| Dew point | 8°C / 46°F | |
| Sunshine | 9.3 h/day | |
| Daylight | 16.3 h | |
| Wind | 18 km/h / 11 mph | |
| Air quality (US AQI) | 28 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Reykjavík?
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Reykjavík in August — FAQ
- Is August a good time to visit Reykjavík?
- August in Reykjavík: cool, rainy, with clean air — one of the best months to visit. It ranks #2 of 12 months for Reykjavík on SeasonMap's comfort score (83/100).
- What is the weather like in Reykjavík in August?
- In August, Reykjavík averages a daily high of 14.1°C and a low of 8.7°C, with about 84.2 mm of rain over roughly 14 rainy days.
- What is the air quality in Reykjavík in August?
- Reykjavík has a mean US Air Quality Index of about 28 in August.