In September, Surat Thani typically sees daytime highs of 31.8°C and overnight lows around 23.0°C. Compared to the annual average high of 31.9°C, September runs -0.1°C.
September in Surat Thani averages a daytime high of 31.8°C and an overnight low of 23.0°C.
September runs -0.1°C compared to Surat Thani's annual average high of 31.9°C, ranking #8 of 12 months by warmth.
Plan for daytime highs near 31.8°C and cooler evenings around 23.0°C.