Best Diving in September

The MV Odyssey in Rowley Shoals, Australia

September can be a tricky time to dive, as many destinations are transitioning between seasons. However, both the Sea of Cortes and Guadalupe Island in Mexico are absolutely magical to visit during September and hold the promise of unforgettable encounters with marine megafauna. One of Australia’s best-kept secrets, Rowley Shoals, has a very short season beginning at the end of September and is regarded as one of the best dive sites in Australia. The drop in humidity and excellent visibility during September make Fiji the ultimate dive holiday destination.

Places such as the Great Barrier Reef in Australia and various locations in Indonesia are still great liveaboard options, as they have no strict dive season. has the unique option of allowing you to search for dive destinations during a particular month, making finding your next liveaboard getaway incredibly simple. You can find this feature on our home page.

Mexico is still amazing

From August, diving in Mexico is incredible. There are two destinations to choose from, Guadalupe Island or the Sea of Cortes, and your choice will be dictated by what marine life you most want to dive with.

Guadalupe Island, off the Baja Peninsula is a hot spot for Great White Sharks. In Guadalupe, you can come face to face with these enormous ocean predators. Guadalupe is arguably the best destination for diving with these sharks, as the visibility of the crystal clear water often exceeds 35 metres and it’s not uncommon to have 6 sharks surrounding the cage on a single dive. September is the month when big females start showing up in Guadalupe, and these sharks can grow more than 5 metres in length.

The Sea of Cortes, also in Mexico, is often compared to an aquarium thanks to its incredible visibility and stunning array of marine life. The beauty of the Sea of Cortes lies in the huge amount of marine biodiversity that can be seen there. From diving with curious Californian sea lions that love nothing more than coming up and sniffing a camera dome, to the macro life scattered along the coral reefs, there is life everywhere you look. The area is renowned for being one where you’re guaranteed to dive with sea lions, and you’ll encounter mantas, sharks, and even dolphins, along with huge schools or pelagic fish.

Australia’s hidden gem

Australia is most well known for its iconic Great Barrier Reef, but on the other side of the country lies Australia’s best-kept secret. Rowley Shoals Marine Park is 300 kilometers off Broome, Western Australia. Blink and you’ll miss this spectacular locations dive season. This dive destination is one that is truly off the beaten track, and can only be accessed by liveaboard a few months of the year. The stunning reefs of Rowley Shoals can only be dived from very late September through until late November.

'Homer', a 12m expedition vessel that accompanies the MV Odyssey, to ensure you reach the best dive and snorkel spots comfortably. 

The Rowley Shoals are essentially a chain of three coral atolls at the edge of the continental shelf in Western Australia. Here you will find coral gardens covered in vibrant soft and hard corals, surrounded by colourful reef fish. The ‘Northern Wall’ located on the Mermaid Atoll features a steep drop to 80 metres, and is home to every species of reef fish imaginable. More than 200 species of coral and 600 species of fish can be found in the Rowley Shoals and only 200 people have the privilege of visiting this relatively unknown dive site a year. The MV Odyssey offers limited diving trips to the Rowley Shoals, Australia. The advanced catamaran design ensures that the Odyssey Liveaboard is stable, relaxed and spacious and visits the best of the Rowley Shoals. 

Visit the ‘friendliest people on Earth’

Fiji is a tropical paradise with fantastic diving, and the hospitality to travellers has resulted in the country being coined as one of the friendliest in the world. During the month of September, the humidity and heat in Fiji is not overwhelming, and the water is cooler which results in phenomenal visibility. September is the tail end of winter in Fiji, and with water temperatures rarely dropping below 24 degrees Fiji is by no means cold. You can expect visibility of around 30 metres dive after dive during winter, and the cooler air temperatures mean you won’t be sweating in the hot tropical sun during your surface intervals.

The favourable conditions of Fiji make this a destination that can be dived by those with only their Open Water Certification. Most liveaboards, such as the Fiji Siren and Fiji Aggressor, will ask that divers who book a liveaboard have a minimum of 20 or so dives logged for safety precautions. You can expect a mixture of dive types onboard a liveaboard in Fiji. Drift dives are the norm in Taveuni Island, and a site called ‘Rainbow Reef’ will have you dazzled by the stunning array of colours on both the coral reefs and fish that call it home.