Three Islands Versus One
The Gilis give you a choice. Gili Meno, in the middle, is the quietest, with small bungalows and dinners on the sand. Gili Air, closest to Lombok, has a village feel, more cafes and gentle nightlife. Gili Trawangan is the largest and liveliest, with a long strip of bars on its east coast and quieter upscale resorts on its north and west coasts. Many couples base themselves on one and hop to the others by public boat.
Nusa Lembongan is one small island with distinct beaches. Jungut Batu on the northwest coast has the most choice and the best sunsets toward Bali. Mushroom Bay is a sheltered white-sand cove that goes quiet after the midday day-trippers leave. Sunset Beach and Dream Beach in the south feel remote, with low limestone cliffs. Nusa Ceningan, across the bridge, adds cliff views and fewer people.
The Gilis feel flat, sandy and village-like. Lembongan feels rockier, with more cliff drama.
Getting There From Bali
Lembongan is the easy one. From Ngurah Rai International Airport (DPS), Sanur is about 30 minutes by car outside rush hour. Fast boats then reach Jungut Batu in about 35 to 45 minutes. Expect a wet landing, stepping into knee-deep water, so pack light and wear sandals.
The Gilis take longer. From Bali, fast boats run from Serangan, Padang Bai and Amed, taking roughly one and a half to two and a half hours depending on the port and conditions. Seas are calmest in the morning. Alternatively, fly from Bali to Lombok in about 40 minutes, then drive about two hours from Lombok International Airport (LOP) to Bangsal or Teluk Nare and take a 15 to 45 minute boat.
On both, choose an established boat operator with life jackets. Fast boats are sometimes canceled in rough weather, so keep a buffer day before international flights. From the US, both start with a connection through an Asian or Gulf hub to Bali.
Weather Windows
Their seasons are close, with small differences.
The Gilis are best in the dry season, roughly May to October, when skies are clear and the crossing from Bali is calmer. April and October are good shoulder months. July and August are busiest. The rainy season, about November to March, brings showers and rougher crossings, although the islands tend to be drier than Bali or Lombok's mountains. Jellyfish sometimes drift in, so a thin rash guard helps.
Lembongan's dry season runs roughly April through September, with the calmest seas and clearest water. It is noticeably drier than mainland Bali, so October and November are reasonable bets for lower prices. January and February are the wettest months, with choppier crossings and lower visibility.
For marine life, mantas are seen off Nusa Penida year-round. Mola mola season, roughly July to October, draws divers to the waters around Lembongan. Turtles are common around the Gilis in every season.
Bungalows and Pool Villas
Neither has big resorts, which is much of the appeal.
On the Gilis, Gili Meno is mostly small beach bungalows and boutique resorts, some with private plunge pools. BASK Gili Meno is a villa resort on the island, from around $250 a night (approximate). Gili Air has plenty of romantic villas and calmer sunset spots than Trawangan. Trawangan's north and west coasts hold upscale resorts with pools facing the sunset. Ask whether your hotel has fresh water showers, since some cheaper places still use brackish water.
On Lembongan, the stays are villa resorts and bungalows spread around the beaches. Batu Karang Lembongan Resort is a long-running upscale option above Jungut Batu. Private-pool villas run very roughly $150 to $400 a night, with simpler bungalows well below that (approximate). Villas in the south and on Ceningan trade convenience for cliff views.
Prices on both are lower than on Bali's south coast, so a private pool is within reach.
Under the Water
This is where the choice often gets made.
The Gilis are about turtles. Green turtles are common in the shallows, especially around Gili Meno and the north of Gili Trawangan. The reefs are close enough to reach from the beach. A half-day glass-bottom boat trip circling all three islands is a cheap way to see the best spots. The diving is gentle, with easy slopes and plenty of schools for a discover scuba session together.
Lembongan is about mantas. Small boats head to the cleaning stations off Nusa Penida, where rays with wingspans wider than you are tall circle near the surface. Book it early in your stay so you have a spare morning if seas cancel it. The water runs unusually clear and Lembongan is also a well-known place to learn to dive.
Turtles from the beach are easier for nervous swimmers. Mantas from a boat are the bigger thrill. Keep a respectful distance from both and never touch them.
Days on Land
On the Gilis, the bicycle is your friend. Cycle around Gili Air in the late afternoon, stopping for a coconut on the quiet north coast. Climb Sunset Hill on Gili Trawangan for views toward Bali, or settle into a swing seat at a west-coast beach bar. For a full day out, take a boat to Lombok to see waterfalls at the foot of Mount Rinjani or the quiet beaches of the south. Mornings start with the call to prayer, roosters and horses' hooves.
On Lembongan, walk to Devil's Tear late in the afternoon, when waves explode through the rock and throw rainbows in the spray. Stay behind the barriers. Cycle over the rattling Yellow Bridge to Nusa Ceningan and its cliff-ringed Blue Lagoon. Hire a boatman to pole you through the northern mangroves in a jukung, a traditional outrigger, in the soft morning light. One of you can chase surf on the outer reef while the other reads by the pool.
Both are slow by design. Lembongan has a little more scenery on land.
Safety and Small Print
Currents are the main risk on both. Never try to swim between the Gili Islands, where currents are strong. On Lembongan, Dream Beach and Sunset Beach have strong rip currents. Mushroom Bay and the mangrove side are the calm spots.
The Gilis have no motor vehicles at all. Lembongan has scooters on steep, rough roads, so walk or cycle if either of you is unsure. Lembongan's clinic handles minor problems only, with serious cases sent back to Bali, so buy insurance that covers medical evacuation.
Carry cash in small notes on both, since ATMs can run dry. On the Gilis, most residents are Muslim, so cover up away from the beach and keep public affection low-key. Avoid locally made spirits such as arak, which have caused methanol poisoning in Indonesia. Ignore drug offers, since the laws are extremely harsh. Dengue occurs in both places. If you're pregnant or hoping to be soon, check CDC travel health notices for Indonesia.
Fitting Them Into a Bali Trip
Lembongan is the natural pick for a short honeymoon. Because Sanur is so close, you can do four nights in Ubud, three in Lembongan and two in Uluwatu without losing a full day to travel.
The Gilis suit a longer trip or one that includes Lombok. A good ten to twelve-night plan: four nights in Ubud, an early fast boat from Padang Bai or Amed to Gili Meno or Gili Air for four nights, then back to Bali for two or three nights in Uluwatu, close to the airport.
With two weeks, you can include both. Some fast boats link Lembongan and the Gilis directly in season. Otherwise route back through Bali. Put the island legs in the middle of the trip and finish on the mainland, so a canceled crossing cannot cost you your flight home.