In June, Ko Samui typically sees daytime highs of 31.2°C and overnight lows around 24.7°C. Compared to the annual average high of 30.3°C, June runs +0.9°C.
June in Ko Samui averages a daytime high of 31.2°C and an overnight low of 24.7°C.
June runs +0.9°C compared to Ko Samui's annual average high of 30.3°C, ranking #3 of 12 months by warmth.
Plan for daytime highs near 31.2°C and cooler evenings around 24.7°C.