Diving in Gili Trawangan: Courses, Sites & What to Expect

Why the Gili Islands for Diving

The three Gili Islands share a network of dive sites, so a dive shop based on any one of them can typically take you to sites near all three. Conditions are generally gentle compared to more current-heavy dive destinations in Indonesia, which makes the area popular both for certification courses and for relaxed fun diving. Turtles are the signature sighting here — green and hawksbill turtles are seen on the large majority of dives.

Getting Certified: PADI Open Water

Gili Trawangan has the highest concentration of dive shops of the three islands, making it the most practical base for a PADI Open Water course. A standard course runs over 3 to 4 days and combines classroom or e-learning theory, confined-water skills practice, and four open-water dives. Most shops offer package pricing that includes equipment, and many also provide accommodation deals for the duration of the course.

Fun Diving for Certified Divers

If you're already certified, most shops offer two-tank fun dive packages, with sites chosen based on conditions and your experience level. Popular sites in the area include gentle slopes with abundant reef fish and turtles, as well as a few current-driven sites better suited to more experienced divers who want a livelier drift.

What Water Conditions Are Like

Visibility and current vary by season and site:

• Dry season (roughly April to October) generally offers the clearest visibility and calmest conditions, making it the most popular window for both courses and fun diving.
• Wet season (roughly November to March) can bring reduced visibility and choppier surface conditions, though diving still continues — some sites are more sheltered than others.
• Water temperature stays warm year-round, typically comfortable in a 3mm shortie or light wetsuit for most divers.

A Typical Day of Diving

Most dive shops run two-tank morning trips, departing by boat from the harbour area, with a surface interval between dives (often a short beach or boat break) before the second dive. Full-day and afternoon options are also common, and courses typically run across consecutive days rather than all in one sitting.

Snorkeling as an Alternative

If you're not diving, most of the same boats and dive shops run snorkeling trips to nearby reef sites and Gili Meno's underwater statues, so non-divers in a group don't need to sit out the day.

Choosing a Dive Shop

A few practical things to check before booking:

• Confirm group size — smaller groups generally mean more individual attention, especially for courses.
• Ask what's included (equipment, boat fees, certification card) versus what's extra.
• If you have known ear or sinus issues, mention this before booking a course, since equalizing is one of the more common early hurdles for new divers.

Tips for First-Time Divers

1. 1Book your course for the start of your Gili stay, not the end, in case weather pushes a day.
2. 2Follow standard DAN (Divers Alert Network) guidelines on flying after diving: at least 12 hours after a single no-decompression dive, and at least 18 hours after multiple dives or multiple days of diving. Many divers build in extra buffer beyond this minimum for peace of mind.
3. 3Bring your own mask if you have one you're used to — fit matters more than most people expect.
4. 4Stay hydrated; dive days are longer and more physically demanding than they look.