In October, Haikou typically sees daytime highs of 20.2°C and overnight lows around 11.4°C. Compared to the annual average high of 20.9°C, October runs -0.8°C.
October in Haikou averages a daytime high of 20.2°C and an overnight low of 11.4°C.
October runs -0.8°C compared to Haikou's annual average high of 20.9°C, ranking #8 of 12 months by warmth.
Plan for daytime highs near 20.2°C and cooler evenings around 11.4°C.