In September, Trincomalee typically sees daytime highs of 34.2°C and overnight lows around 24.4°C. Compared to the annual average high of 32.1°C, September runs +2.1°C.
September in Trincomalee averages a daytime high of 34.2°C and an overnight low of 24.4°C.
September runs +2.1°C compared to Trincomalee's annual average high of 32.1°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 34.2°C and cooler evenings around 24.4°C.