Fast boat on Klook
Fast Boat Ticket between Bali (Sanur) and Nusa Lembongan sponsored
- Listed price
- from AUD 6.45, read 13 November 2026

ombak waves
The sea around Nusa Lembongan, the island off Nusa Penida in Bali, Indonesia, carries waves in every month, so surfing here is not tied to one season. The Badung Strait runs biggest from June to September and smallest in November, as the swell ribbon below shows month by month from the Meteo-France MFWAM wave model, 2022 to 2025. Klungkung Regency names Pantai Mahagiri as the venue of the 2026 LST Surfing and Music Festival. Before you go, sort three things: the boat's fee for your board bag, travel insurance that covers surfing, and a local surf school or boat for the break that suits you.
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musim season
The ribbon follows the typical size of the sea in the strait through the year; the bars show how often it reached BMKG's moderate wave band. Pick a month for its figures and the sea temperature. It describes the open water of the strait, not the wave at any one break, so read it as the season, then ask the surf schools about the day.
January in the Badung Strait
Wave figures from the Meteo-France MFWAM wave model, 2022 to 2025: 4 years of daily values at one model point in the open strait west of Lembongan, not a reading at any surf break. Sea temperature: NOAA OISST, 1991 to 2020. A likelihood from past years, not a forecast; BMKG's high-wave warnings give the coming days.
| Month | Median highest wave | Moderate band or above | High band or above | Sea temperature |
|---|---|---|---|---|
| January | 1.3 m | 57% | 0% | 29°C (84°F) |
| February | 1.3 m | 55% | 0% | 29°C (84°F) |
| March | 1.3 m | 53% | 0% | 29°C (84°F) |
| April | 1.3 m | 60% | 0% | 29°C (84°F) |
| May | 1.4 m | 76% | 1% | 28°C (82°F) |
| June | 1.6 m | 83% | 3% | 28°C (82°F) |
| July | 1.7 m | 94% | 2% | 27°C (81°F) |
| August | 1.7 m | 90% | 4% | 26°C (79°F) |
| September | 1.6 m | 80% | 1% | 27°C (81°F) |
| October | 1.4 m | 82% | 2% | 27°C (81°F) |
| November | 1.2 m | 42% | 0% | 28°C (82°F) |
| December | 1.3 m | 59% | 0% | 29°C (84°F) |
laut sea
The figures are significant wave height: the mean of the highest third of the waves, the measure BMKG builds its bands on. BMKG warns that single waves can reach up to 2 times that height, so a month with a median of 1.7 m can bring single waves well above it.
In the Meteo-France MFWAM wave model, 2022 to 2025, the strait's median ran from 1.2 m in November to 1.7 m in July. July had the most days in the moderate band (1.25 to 2.5 m) or above, 94%, against 42% in November. Days in the high band (2.5 to 4 m) were rare in every month, at most 4% in August.
The point the model reads sits out in the strait, west of Lembongan, as the map shows. BMKG forecasts the Badung Strait as a sea area of its own; its warnings for that area are the ones to check in the days before you paddle out. A run of 4 years is short, so treat one month against its neighbours as a tendency, not a rule.
Weather on land, rain and the month to pick for the whole trip are on Nusa Penida weather.

rumput laut seaweed
Seaweed farms line the shallows of the Lembongan coast; the photo shows them at low tide. Ask about the tide before you walk out with a board.
pulau island
Lembongan and its smaller neighbour share the same strait and the same swell. Nusa Ceningan is joined to Lembongan by the Yellow Bridge, and its west coast looks out over the same strait. Surfing Nusa Ceningan means the same months on the ribbon; the cliffs on that side, and the cove below them, are on the Blue Lagoon page.
Lembongan has a surfing scene of its own. Klungkung Regency reported on the LST Surfing and Music Festival 2026, held at Pantai Mahagiri and organised by the Lembongan Surf Team and PSOI, Indonesia's surfing association, with the regent closing the event (news item of 7 September 2026). If you want to watch local surfers compete, keep an eye on the regency's news for future events.
For what else to fill the flat days with, things to do on Nusa Lembongan sorts the beaches, the mangroves and the boat trips, and snorkelling around Nusa Penida covers trips that leave from Lembongan.
perahu boat
You reach Nusa Lembongan by boat, most often a fast boat from Sanur. Ports, crossing times and fares for each operator are on Sanur to Nusa Lembongan; from other parts of Bali, start with Bali to Nusa Penida.
A board costs extra on some boats. Gili Getaway charges IDR 100,000 per journey for a single-board bag (about AUD 8, USD 5.5 or GBP 4.1) and twice that for a multi-board bag, and carries normal luggage free, its FAQ states. Ask your operator about boards when you book, not at the pier.
Board bags on Gili Getaway
As Gili Getaway states in its FAQ. Rupiah converted at Bank Indonesia rates of 13 November 2026. Other operators set their own rules; ask before you book.
The US CDC advises always wearing a life jacket when boating in Indonesia (page reviewed 25 August 2026). That covers the crossing and any boat that takes you out to a break.

Fast-boat tickets between Sanur and Lembongan, with the partner's listed price and the date it was read:
Fast boat on Klook
Fast boat on Viator
laut sea
Your policy. Smartraveller, the Australian Government's advice (updated 21 October 2026), lists surfing among risky activities in Indonesia, together with snorkelling, boat rides and bungee jumping, and warns that these may not be covered by travel insurance. Read your policy's wording on surfing before the trip, and ask your insurer in writing if it is unclear.
No lifeguards to count on. Smartraveller also states that many beaches in Indonesia are unpatrolled and can be dangerous due to rough seas and strong currents. The US CDC advises swimming only in designated areas and obeying lifeguards and warning flags.
On the day. Look at BMKG's warnings for the strait, look at the sea, and ask at a surf school on Lembongan which break and which tide suit your level. What the advisories say for the islands as a whole is on is Nusa Penida safe.
menginap staying the night
Jungutbatu is the Lembongan seafront where boats moor, as the photo above shows. Two Jungutbatu stays, with each partner's listed price for two nights and the date it was read. How Jungutbatu compares with the rest of the island, and more stays, is on where to stay on Nusa Lembongan; the island itself is on the Nusa Lembongan page.
Stay on Booking.com
Stay on Booking.com
musim season
ombak waves
1.7 m
median of each July day's highest significant wave in the Badung Strait, the biggest month (model, 4 years)
laut sea
94%
of July days reached BMKG's moderate band or above, against 42% in November
perahu boat
IDR 100,000
Gili Getaway's fee for a single-board bag, per journey, about AUD 8, USD 5.5 or GBP 4.1
pertanyaan questions
Yes. Klungkung Regency reports a 2026 surfing festival held at Pantai Mahagiri, and the Badung Strait carries waves in every month: in the Meteo-France MFWAM wave model, 2022 to 2025, the median of each day's highest wave ran from 1.2 m in November to 1.7 m in July. Ask a surf school which break suits you.
It depends on the size you want. The strait runs biggest from June to September, with July's median at 1.7 m and moderate-band seas on 94% of days. November is the smallest month. These are model figures for the open strait, not a reading at a break, so ask a local surf school about the day.
Some do, for a fee. Gili Getaway charges IDR 100,000 per journey for a single-board bag, twice that for a multi-board bag, and carries normal luggage free, as its FAQ states. Rules differ between operators, so ask about boards when you book. The boats and ports are on the Sanur to Nusa Lembongan page.
Maybe not. Smartraveller, the Australian Government's advice, lists surfing among risky activities in Indonesia and warns these may not be covered by travel insurance. Read the wording of your own policy before you travel and ask your insurer in writing if it is unclear. Smartraveller also states that many Indonesian beaches are unpatrolled.
Nusa Ceningan, joined to Lembongan by the Yellow Bridge, faces the same Badung Strait, so the same months apply on the swell ribbon. Ask a surf school on Lembongan or Ceningan which break suits your level and the tide. The island itself is covered on the Nusa Ceningan page, and its cliffs on the Blue Lagoon page.