In September, Santo Tome typically sees daytime highs of 22.3°C and overnight lows around 9.3°C. Compared to the annual average high of 24.8°C, September runs -2.5°C.
September in Santo Tome averages a daytime high of 22.3°C and an overnight low of 9.3°C.
September runs -2.5°C compared to Santo Tome's annual average high of 24.8°C, ranking #8 of 12 months by warmth.
Plan for daytime highs near 22.3°C and cooler evenings around 9.3°C.