Reykjavik Weather in August
In August, Reykjavik averages a high of 13°C (56°F) and a low of 8°C (47°F), from 55 years of daily records (1971–2026).
13°C
Average high
56°F
8°C
Average low
47°F
22°C
Record high
72°F · August 12, 2004
1°C
Record low
34°F · August 27, 1974
What August Is Like in Reykjavik
- 5 of the 10 warmest Augusts on record in Reykjavik have come since 2011.
- The coldest August reading, 1°C (34°F) on August 27, 1974, has not been matched in 52 years.
- August in Reykjavik has become 1.0°C (1.8°F) warmer on average: the 2011–2025 average against 1970–1989.
- The warmest August in the record was 2003; the coldest was 1983.
At least 1 mm of rain falls on 39% of August days, and the month averages 67 mm in total.
Warmest: 2003 (15.6°C)Latest: 2025 (14.4°C)10-year averageLong-run average (13.5°C)
Look Up a Day in August
See the weather in Reykjavik on any August date, year by year.
Source: NOAA GHCN-Daily, Reykjavik (1971–2026); Reykjavik (2006–2025). Averages cover 1971–2026. How we compute this