Diving in Fiji in December

Conditions in December

So, you're eyeing Fiji for a December dive adventure? You're looking at the start of Fiji's "green season" or wet season. While this might sound a bit daunting, don't let it put you off; it offers a unique, vibrant experience. December in Fiji typically brings warmer air temperatures, usually hovering around 28-30°C (82-86°F), making surface intervals blissfully comfortable. However, be prepared for tropical downpours, often intense but usually short-lived. These can happen daily, especially in the afternoons.

Underwater, things are consistently delightful. Water temperatures in December generally range from a balmy 27-29°C (81-84°F), meaning a 3mm shorty or even just board shorts and a rash guard might be enough for many divers. Visibility can be a mixed bag, but generally remains excellent. In protected lagoons and offshore reefs, you can still expect anywhere from 20-30 meters (65-100 feet) of crystal-clear water. However, closer to shore or after heavy rains, runoff can reduce visibility temporarily in some areas.

Currents are always a factor in Fiji, as they are often responsible for the incredible nutrient flow that supports its vibrant marine life. In December, these can be moderate to strong, particularly around popular drift diving sites and channels. Dedicated drift dives are common, but experienced dive guides will always select sites and times appropriate for the prevailing conditions. Don't worry, even during the "wet" season, Fiji delivers spectacular diving!

What you will see

December in Fiji, despite being the wet season, is an incredibly productive time for marine life sightings. The warmer waters can often trigger more active behavior from many species. This is prime time for encountering mantas, especially around cleaning stations. While not guaranteed, the likelihood increases as the water warms, bringing more plankton for them to feed on. You're also very likely to encounter a dazzling array of reef sharks – white-tip, black-tip, and grey reef sharks are common residents, often seen patrolling the reef edges.

For pelagic enthusiasts, the nutrient-rich currents of December can attract larger predators. Tuna, barracuda, and even occasional hammerheads might be sighted on deeper dives or in strong current areas. The famous "fiji soft corals" are perhaps at their most vibrant during this period, with their polyps often fully extended, creating an explosion of color. Keep an eye out for schooling fish like snappers and fusiliers, which often form massive aggregations, making for breathtaking photo opportunities.

Macro lovers certainly won't be disappointed either. The reefs are teeming with nudibranchs, flatworms, and various crustaceans hiding amongst the corals. Look closely for tiny pipefish, seahorses (though rarer), and an incredible diversity of reef fish juveniles. The warmer waters often mean more active invertebrate life, so scrutinize every crevice! While specific seasonal aggregations like whale sharks are not typical for December in Fiji, the general health and activity of the reef ecosystem remain incredibly high, offering a rich tapestry of marine life.

Top dive sites this month

In December, several regions and dive sites in Fiji truly shine. The Bligh Water, accessible from several liveaboards, continues to be a highlight. Sites like E.T. and Mount Mutiny are famous for their colossal soft coral gardens, which appear even more spectacular in the warmer, clearer waters of this period. The currents here are often responsible for the incredible health of the corals and the abundance of schooling fish, making for thrilling drift dives. You'll likely see plenty of reef sharks and pelagics here.

The Somosomo Strait, between Taveuni and Vanua Levu, is another must-visit. Its iconic sites, such as the Great White Wall and Rainbow Reef, are at their kaleidoscopic best in December. While the Great White Wall occasionally gets its "white" (dendronephthya corals) blooms throughout the year depending on nutrients and currents, the overall vibrancy of the soft corals across Rainbow Reef is simply stunning. Keep an eye out for mantas and sharks cruising by. For slightly calmer conditions but still incredible reefs, the Beqa Lagoon offers fantastic shark diving experiences at sites like "Shark Reef," where you can encounter bull sharks, tiger sharks, and numerous reef sharks.

Practical tips for your trip

Considering the warm December water temperatures of 27-29°C (81-84°F), most divers will find a 3mm full wetsuit perfectly comfortable, or even a 3mm shorty or a simple rash guard for shorter dives. If you tend to get cold easily or plan on multiple dives a day, a 3mm full suit is a safe bet. This month is well-suited for both beginners and advanced divers. Beginners will appreciate the warm water and often gentler conditions in protected lagoons, while advanced divers can revel in the current-swept outer reefs and pelagic encounters.

Liveaboard availability in December can vary. The early part of the month might see some good deals as it's just before peak holiday season, but the latter half, approaching Christmas and New Year, tends to book up quickly and prices might increase. It's always best to book well in advance for any liveaboard trip to Fiji, especially during this period. What to pack? Lightweight, quick-drying clothing is essential due to the humidity and potential for rain. Don't forget a good hat, reef-safe sunscreen, insect repellent (especially for evenings ashore), and a light rain jacket. Be aware that while Fiji is generally safe, always follow local advice, respect local customs, and stay hydrated in the tropical climate. Enjoy the vibrant reefs and warm welcome of Fiji!