Taking the local weather in Isla de Utila into account can help you maximise your time at the pool during your trip. The hottest months are usually May and June, with an average temperature of 26°C, while the coldest months are January and February, with an average of 23°C. The rainiest months in Isla de Utila are November, October, January and December, with each month seeing an average of 259 mm of rainfall.