Daytime temperatures are usually in the upper 80’s to low 90’s and water temperatures never vary more than a few degrees above 75°F. Nighttime temperatures average a few degrees over 70 °F. Christmas Island has a dry climate, it seldom rains. There are no winter “cold fronts”, such as those frequently experienced in the Bahamas, Mexico and Belize. Nevertheless, a rain coat can be handy for windy wet boat rides.
A word on the sun! Of all the destinations we fish around the world, Christmas Island wins the prize for the most intense sun. Plenty of sun screen with SPF 45 or higher, a big hat, and long sleeve shirts and pants are a must!