Melville Hall Temperature At Melville Hall in Dominica, for a period of record spanning 1981 – 2014 average annual 2m air temperature = 27.5 °C warmest year on record = 28.1 °C in 1995 coldest year on record = 26.8 °C in 2011 warmest month on average = 28.7 °C in August warmest month on …