What is the best time of year to visit Cairns for diving and snorkeling at the Great Barrier Reef?

The best time to visit Cairns for diving and snorkeling at the Great Barrier Reef is during the Australian winter months, from June to August. During this time, the weather is cooler and the water is clear, providing excellent visibility for divers and snorkelers. The water temperature is also comfortable, ranging from 22 to 24 degrees Celsius (72 to 75 degrees Fahrenheit). Additionally, this period is considered the 'dry season' in Cairns, meaning there is less rainfall and fewer stingers (jellyfish), making it safer and more enjoyable for water activities. However, the Great Barrier Reef is a year-round destination and each season offers unique experiences.