Diving Seasons - Great Barrier Reef
Diving May -> August
May through August is mostly sunny and clear of rain, although the south-easterly trade winds can be a bit stronger at this time. Air temperatures range from 15°C/ 60°F to around 26°C/ 79°F. The water will be at its coolest, dropping to around 24°C/ 75°F, but generally offers great visibility.
In the months of June and July, you can encounter and swim with dwarf minke whales on the Ribbon Reefs, after they migrate from the Antarctic seas to the warmer waters of the Great Barrier Reef.
Diving September -> December
Diving January -> April
Cairns Diving Weather by Month
|Month||Air Temp Max°C||Air Temp Min°C||Av. Humidity %||Av. Surface Water Temp°C||Av. (land) Rainfall (mm)||Av. Rain Days|