In August, Keflavik typically sees daytime highs of 12.2°C and overnight lows around 8.1°C. Compared to the annual average high of 6.8°C, August runs +5.4°C.
August in Keflavik averages a daytime high of 12.2°C and an overnight low of 8.1°C.
August runs +5.4°C compared to Keflavik's annual average high of 6.8°C, ranking #2 of 12 months by warmth.
Plan for daytime highs near 12.2°C and cooler evenings around 8.1°C.