August in Anchorage averages a daily high of 18.7°C with nights around 10.8°C. Expect roughly 16.1 wet days totalling 77.5mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Anchorage is May–July.
Based on ANCHORAGE MERRILL FIELD, AK US (2.3km), 1995–2024. 27 years of August data.