Fraser Island has a subtropical climate with temperatures moderated by proximity to the sea. Average coastal temperatures range from 22 to 28 degrees Celsius in December and 14 to 21 degrees Celsius in July, although it can be more extreme inland.
Annual rainfall varies across the island, from 1200mm on the coast to 1800mm inland. Wettest months are January to March (about 160mm rainfall per month) with drier months in winter/spring (54mm rainfall in September). Moderate winds predominate from the southeast; storms are not uncommon with occasional severe storms.