In July, Derry typically sees daytime highs of 17.5°C and overnight lows around 10.5°C. Compared to the annual average high of 11.9°C, July runs +5.6°C.
July in Derry averages a daytime high of 17.5°C and an overnight low of 10.5°C.
July runs +5.6°C compared to Derry's annual average high of 11.9°C, ranking #2 of 12 months by warmth.
Plan for daytime highs near 17.5°C and cooler evenings around 10.5°C.