Weather In Naples Fl – Aug – 2026. Weather.com brings you the most accurate monthly weather forecast for naples, fl, united states with average/record and high/low temperatures, precipitation and more. August, recognised by an average high temperature of 88.3°f (31.3°c) and a low of 80.2°f (26.8°c), is naples's warmest month.

Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures. Temperature highs reach a sweltering 92°f (33°c) with temperature lows staying above 76°f (24°c) overnight.