In August, Reykjavik typically sees daytime highs of 13.4°C and overnight lows around 7.5°C. Compared to the annual average high of 6.9°C, August runs +6.5°C.
August in Reykjavik averages a daytime high of 13.4°C and an overnight low of 7.5°C.
August runs +6.5°C compared to Reykjavik's annual average high of 6.9°C, ranking #2 of 12 months by warmth.
Plan for daytime highs near 13.4°C and cooler evenings around 7.5°C.