August in Jacksonville averages a daily high of 31°C with nights around 21.7°C. Expect roughly 13.3 wet days totalling 182.9mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Jacksonville is March–May.
Based on NEW RIVER MCAF, NC US (5.2km), 1995–2024. 26 years of August data.