In September, Zanzibar typically sees daytime highs of 29.0°C and overnight lows around 21.4°C. Compared to the annual average high of 29.5°C, September runs -0.5°C.
September in Zanzibar averages a daytime high of 29.0°C and an overnight low of 21.4°C.
September runs -0.5°C compared to Zanzibar's annual average high of 29.5°C, ranking #9 of 12 months by warmth.
Plan for daytime highs near 29.0°C and cooler evenings around 21.4°C.