In March, Haikou typically sees daytime highs of 21.2°C and overnight lows around 7.5°C. Compared to the annual average high of 20.9°C, March runs +0.3°C.
March in Haikou averages a daytime high of 21.2°C and an overnight low of 7.5°C.
March runs +0.3°C compared to Haikou's annual average high of 20.9°C, ranking #7 of 12 months by warmth.
Plan for daytime highs near 21.2°C and cooler evenings around 7.5°C.