In September, Newcastle typically sees daytime highs of 24.6°C and overnight lows around 8.4°C. Compared to the annual average high of 24.2°C, September runs +0.5°C.
September in Newcastle averages a daytime high of 24.6°C and an overnight low of 8.4°C.
September runs +0.5°C compared to Newcastle's annual average high of 24.2°C, ranking #7 of 12 months by warmth.
Plan for daytime highs near 24.6°C and cooler evenings around 8.4°C.