In July, Haikou typically sees daytime highs of 24.2°C and overnight lows around 16.5°C. Compared to the annual average high of 20.9°C, July runs +3.3°C.
July in Haikou averages a daytime high of 24.2°C and an overnight low of 16.5°C.
July runs +3.3°C compared to Haikou's annual average high of 20.9°C, ranking #2 of 12 months by warmth.
Plan for daytime highs near 24.2°C and cooler evenings around 16.5°C.