In September, Gisenyi typically sees daytime highs of 21.4°C and overnight lows around 11.4°C. Compared to the annual average high of 21.1°C, September runs +0.3°C.
September in Gisenyi averages a daytime high of 21.4°C and an overnight low of 11.4°C.
September runs +0.3°C compared to Gisenyi's annual average high of 21.1°C, ranking #3 of 12 months by warmth.
Plan for daytime highs near 21.4°C and cooler evenings around 11.4°C.