Telo Islands Peak Season: Why April to August Is the Best Time to Surf

There’s a window in the year when the Telo Islands stop being great and start being extraordinary. From April through August, the Indian Ocean turns on, and some of the best surf in Indonesia starts breaking across a chain of remote islands that most of the world still hasn’t found.

At Latitude Zero, we sit right on the equator which makes it a very unique place for surfing.

The Weather and Why the Equator Works in Your Favour

The Telo Islands sit directly on the equator. The Mentawai Islands — the benchmark most travelling surfers use — sit a degree or two to the south. That proximity means both destinations run on the same swell engine: Southern Hemisphere winter storm systems driving long-period Indian Ocean energy northward from the Roaring Forties, arriving clean and organised at reef passes that were built to handle it.

If you know the Mentawais, the swell patterns here will feel immediately familiar.

What the equator adds is consistency of climate. No real seasons in the traditional sense — the water stays around 28–29°C year-round and the air temperature barely shifts. Mornings are regularly glassy. The rhythm of the day is predictable enough that you can plan around it, and the light — sunrise at 6am, sunset at 6:30pm — gives you a full day in the water if you want it.

April through August is when that swell window is most active and most reliable. That’s peak season, and that’s when the waves here show their full range.

The Waves: Mentawais Quality, Without the Mentawais Crowds

The Telo Islands have around 20 breaks spread across the chain. When peak season swell arrives, the best of them are as good as anything the Mentawais produce on their day — the same Indian Ocean energy, the same reef-pass perfection, the same long-period swell doing exactly what it’s supposed to do when it hits a shallow reef at the right angle.

The heavy reef passes are what peak season is made for. Fast, hollow, unforgiving — waves that need genuine size to show what they are. On a peak-season pulse they can be as good as it gets anywhere in this part of the world. That’s not a stretch. It’s just what happens when world-class reef geometry meets the right swell.

What separates the Telos from better-known Indonesian destinations is the scale and variety of the chain. Even when it’s pumping, the spread of islands and the range of reef orientations means there’s always somewhere that’s working at a more manageable size. Protected points that hold a fun, hittable shape while the open reef is only for the serious. Long, rolling walls that are perfectly suited to a longboard or a mid-length regardless of what the ocean is doing outside. A good-sized swell doesn’t close those waves out — it just makes them better.

For learners and those earlier in their surfing, there are more gentle breaks right near the resort with dedicated guides who work at your pace. Progression here tends to happen quickly — the water is warm, the vibe is relaxed, and there’s no pressure.

The point is that a solid peak-season swell here doesn’t split a group — it gives everyone their best day. That’s harder to find than people think.

Less Busy Line-Ups — and That’s the Whole Point

The Telo Islands are remote by intent. Getting here takes a bit of doing, and the number of people in the water at any break reflects that. We won’t say uncrowded — but we will say you are not fighting like you would be at most Indonesian surf spots these days.

Latitude Zero Resort runs up to four boats in the water at any given time, each with a Western surf guide and a guest group surfing the break that suits them that day. The lineup variety across the chain means the surf is spread out naturally. If you’ve experienced the circus of better-known Indo surf destinations, the contrast here is immediate.

Peak season is busier than a shoulder trip, naturally. But the scale of the Telos means it never feels like it. That’s the kind of place this is.

The Perfect Trip — Whatever That Looks Like

Peak season at Latitude Zero draws all kinds of travelers and it works for all of them. Boys trips built around the boats and the bar. Family trips where ability levels vary and everyone still gets a great day — because the wave variety is real, not just promised. Mixed groups where the longboarder and the short-board charger surf the same trip without anyone making a compromise.

Beyond the surf, the resort runs full during peak season — eight chefs, an all-inclusive bar stocked with wines, cocktails, fresh juices and proper coffee, Ice bath, fishing, free diving, the Karma Spa, and a 14-metre pool. People who don’t surf or want a rest day are never sitting around waiting for everyone else. The place works for them too.

If you’re thinking about a family trip, a boys’ trip, a group trip, or something that doesn’t fit a neat category, this is the place to do it.

Surfing the Telo Islands Year-Round: What Each Season Offers

Latitude Zero sits directly on the equator — and that changes everything about how you think about seasons here. Forget the predictable dry and wet season split of Bali, or the idea that certain months mean certain conditions. At the Telo Islands, any type of weather can happen on any day of the year, and often all of them do on the same day.

There are annual patterns, and vague seasonal shifts — but they vary year to year, shaped by global drivers like the Southern Oscillation Index and the Indian Ocean Dipole far more than by a calendar. The hyper-local, fickle weather patterns of this stretch of ocean are legendary among sailors — a defining characteristic of the fabled Doldrums.

As we like to say at Latitude Zero: anyone who claims to know exactly what the weather will do here hasn’t been here long enough.

Here’s an honest look at what each season offers.

January – February: Tropical perfection

Our favourite time of year. Mostly picture-postcard weather — blue skies, light winds and blissfully empty lineups. You’ll surf every day in super fun conditions, with waves running shoulder to overhead at the exposed reef breaks and quality 3–6ft swells not uncommon. The Indian Ocean rarely goes flat, and those very occasional down days can happen at any time of year, not just the summer months.

The sea state is often exceptional during these months — glassy, calm ocean conditions that open up rarely visited and extremely remote corners of the island chain. It becomes as much about the adventure and exploration as the surf itself: isolated reef breaks, dive spots that most people will never see, beaches you’ll have entirely to yourselves.

• Surfers who love clean, fun-sized waves with room to move
• Longboarders and bigger-craft riders
• Families, groups, wellness retreats and conferences
• Learning to surf or introducing kids to their first quality reef waves
• Combining surf with fishing, diving, beachcombing and island exploration
• Anyone who values comfortable boating on glassy ocean conditions

March – April: The sweet spot

Like the summer months, the weather is mostly stunning through March and April — and the Indian Ocean starts delivering more of those medium-sized 4–6ft swells that begin marching up from the Southern Ocean. These are genuinely great months for surf travel, and the Telo Islands are no different to almost anywhere else in the world in that regard. The conditions work across the board: good enough for the experienced crew, comfortable and fun for everyone else.

Lineups remain quiet, boating conditions are excellent, and the full range of activities is running well. A well-rounded window that suits a wide range of trips and expectations.

• All surfers of all abilities and expectations
• Surfers who love empty or quiet lineups
• Longboarders and bigger-craft riders
• Families, mixed groups, conferences and wellness retreats
• Learn to surf and first-time reef surfers
• Mixing surf with fishing, diving and other water sports

May – September: Prime surf season

Welcome to prime time. Consistent ground swells originating in the winter Roaring Forties — deep in the Southern Ocean — regularly drench Indonesia, lighting up the world-class reef breaks that have made this region famous among serious surfers. This is when the Telos are at their most powerful and their most impressive.

The big winter swells also wrap deep into every nook and cranny of the island chain, bringing sheltered reef breaks and beach breaks to life in the chest-to-head-high range for those after something more measured. With close to 50 surf breaks in the Telo area and serious swell consistently on tap, there is almost always something working for every level — you will score.

Other resorts and charter boats are operating during these months, but the scale of the Telo Islands means the surf is spread across enough breaks that the lineups never feel congested. That’s one of the things that sets this destination apart from better-known Indo surf regions.

• Surfers chasing world-class waves and proper barrels — this is what prime season was made for
• Mates trips and group surf travel
• Anyone escaping the winter back home
• Mixed-ability groups — there is always a wave for every level

October – December: Empty lineups and festive season

As the Southern Ocean heads into summer, the XXL pulses from the higher latitudes ease back and give way to more manageable 4–6ft swells from the west — well-suited to many of the Telo’s best breaks. North winds generally dominate the weather patterns during these months, which works well for the chain’s many right-handers.

Most travelling surfers don’t think of Indonesia for October through December, which is exactly why the lineups go quiet again. If empty waves are the priority, this window delivers. And Christmas and New Year at Latitude Zero is always a highlight — a festive season in the tropics that guests come back for year after year.

• All surfers of all abilities and expectations
• Surfers who love genuinely empty lineups
• Families and groups — especially over Christmas and New Year
• Learn to surf and first-time reef surfers
• Wellness retreats and conference groups
• A tropical Christmas and New Year escape

Frequently Asked Questions

When is the best time to surf in the Telo Islands?

April to August is peak surf season in the Telo Islands. The Indian Ocean generates its most consistent long-period swell during this window, driven by storm systems in the Roaring Forties. May through August is the most powerful and reliable stretch. Shoulder seasons (March, September–November) also produce good surf with even fewer people in the water.

Are the Telo Islands good for beginner and intermediate surfers?

Yes. While the Telo Islands have world-class waves for experienced surfers, they also have genuinely accessible breaks. Churches and Pinnacles offer long, mellow rides ideal for beginners and longboarders. Latitude Zero runs dedicated Learn to Surf sessions with guides in warm, forgiving water, and intermediate surfers are well served by spots like Monkeys and Schoolyards.

What surf breaks are in the Telo Islands?

The Telo Islands have up to 50 breaks. Key spots include GT’s (world-class right-hander), Churches/Missionaries (long consistent left, great for longboards), Pinnacles (beginner-friendly right near the resort), Schoolyards (multiple peaks, all levels), Monkeys (playful intermediate right), Pasti (fast hollow right for experienced surfers), and Wegs (high-speed tubing reef) along with a few others which we won’t name here.

How busy are the surf breaks in the Telo Islands?

Significantly less busy than better-known Indonesian surf destinations. The Telos are remote, which keeps the line-ups manageable. At Latitude Zero, each boat group has a dedicated guide and surfs breaks matched to their level — so you’re rarely competing for waves, even during peak season.

What is the weather like in the Telo Islands?

The Telo Islands sit directly on the equator, which means they don’t follow the predictable dry and wet season patterns of Bali or other parts of Indonesia. The weather here is hyper-local and can shift quickly — part of the character of the equatorial Doldrums. Water temperature stays around 28–29°C year-round. Peak season (May–September) brings the most consistent swell; January–February offers picture-perfect conditions with empty lineups. Any month is a genuine option.

Are the Telo Islands the same as the Mentawai Islands?

No. They are separate island chains off the west coast of Sumatra. Both receive Indian Ocean swell, but they have distinct geography, breaks, and character. Latitude Zero is in the Telo Islands — not the Mentawais. The Telos are significantly less visited, which is a big part of the appeal.

Surfing as you’ve always dreamed it should be.

Peak season fills up early. If April to August is on your radar, now is the time to move.