In March, Port Arthur typically sees daytime highs of 20.4°C and overnight lows around 12.0°C. Compared to the annual average high of 24.3°C, March runs -3.9°C.
March in Port Arthur averages a daytime high of 20.4°C and an overnight low of 12.0°C.
March runs -3.9°C compared to Port Arthur's annual average high of 24.3°C, ranking #9 of 12 months by warmth.
Plan for daytime highs near 20.4°C and cooler evenings around 12.0°C.