northern-ireland_-climate-met-office.pdf
Down in the thirty years 1981 to 2010 was -5.4 °C. July is normally the warmest month in Northern Ireland, with mean daily maximum temperatures varying from about 17.5 °C in the upland areas and along the north coast to almost 20 °C in low lying areas south of Lough Neagh and in Fermanagh. In the UK