When is the best time of the year for Scuba diving Rottnest island and surrounding areas?

You would think that the best time of the year for Scuba diving in Perth would be summer, right? Although summer is when the sea is the warmest temperature and the sky’s are blue there is also other great times for scuba diving in Perth’s local shore dive sites and Rottnest island. You can dive in Perth year round as most locals do.

Autumn

March-May

A favorite time for diving for most Perth locals, this time of the year the water temperature is a nice 17-24 degrees, the winds tend to be low and vizability good. Its perfect boating weather and still  a steady time of the year for diving. Water clarity tends to be the best this time of year also. If sharks is what you are into seeing then this is the best time of the year to see the Grey Nurse Sharks as it is there peak season.

Grey Nurse sharks at Rottnest island

Winter

June-August

This is when the water temperature is at its coolest which is why only the toughest of divers tend to dive during this season. The water temperature on shore dives gets to as low as 14 degrees and at Rottnest 16 degrees. Days during winter can be hit and miss. Some winters we have beautiful days with flat seas and low wind and swell and its a pleasure to dive. Other days it can be wet and miserable. Winter 2021 was a terribly long winter with unusual high wind and swell. Its a good time of year to do shore dives also as you can do a dive and rug up afterwards and head home for a hot shower.