In March, Haikou typically sees daytime highs of 25.2°C and overnight lows around 18.7°C. Compared to the annual average high of 27.7°C, March runs -2.5°C.
March in Haikou averages a daytime high of 25.2°C and an overnight low of 18.7°C.
March runs -2.5°C compared to Haikou's annual average high of 27.7°C, ranking #9 of 12 months by warmth.
Plan for daytime highs near 25.2°C and cooler evenings around 18.7°C.