In September, Gaillimh typically sees daytime highs of 16.6°C and overnight lows around 9.4°C. Compared to the annual average high of 13.0°C, September runs +3.6°C.
September in Gaillimh averages a daytime high of 16.6°C and an overnight low of 9.4°C.
September runs +3.6°C compared to Gaillimh's annual average high of 13.0°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 16.6°C and cooler evenings around 9.4°C.