Thunders
- Advanced riders
- Best for
- Advanced to Expert
- Skill Level
- Ocean, Swell
- Spot Type
- Moderate
- Crowd Level
This spot information is AI-assisted and has not been human verified. It may be incomplete, outdated, or incorrect. Verify safety, access, local rules, and current conditions with official or local sources before riding.
About
Thunders is a legendary, high-performance left-hand reef break off South Pagai in the Mentawai Islands, known for its consistency and its ability to capture swell pulses—making it a true swell magnet even when nearby spots are flatter. The wave is described as heavy and bowly, featuring multiple sections over a sharp coral/reef bottom, with hollow, fast, powerful characteristics that can stay strong from small to very large conditions. The surfing is primarily for advanced and expert riders. Hazards are a major part of the spot’s profile: sharp coral/reef cuts, hold-downs, rocks/reef hazards in the lineup, and strong sweeping currents. The inside sections can also become extremely shallow on lower tides, which increases the risk when timing is off. Riders should expect a workout because currents can push you away from the most productive takeoff zone. Wind is generally an offshore advantage when it comes from the east to southeast (E–SE trades). Those conditions are typically described as clean and helpful for the reef wave shape, while other wind directions (particularly west/southwest) are noted as onshore and detrimental. The spot is exposed, so don’t assume protection from weather—conditions are shaped mainly by swell and wind direction. Access is exclusively boat-based (jumping from a boat or paddling from a moored vessel). Facilities and rescue are limited; in a serious incident, evacuation to Padang may be required. With best surfing season running from April to October (dry season), and the wet season typically from November to March, planning around swell consistency and tide timing is essential for safer, more predictable sessions.
- World-class/hollow, fast left-hand reef wave with long rides
- E–SE winds favor clean offshore conditions
- Works on all tides, but lower tides can make the inside very shallow
- Strong currents and shifting lineup—advanced/expert only
- Consistently strong swell magnet reputation for large, powerful left-hand reef waves
- Clean offshore conditions with E to SE winds
- Works on all tides with long, fast rides
- Warm, clear water year-round
- Extreme remoteness and very limited medical support
- No beach launch; access is exclusively via boat/jumping or paddling from a moored vessel
- Strong currents and a shifting lineup
- Sharp reef and hold-down risk, including very shallow inside sections on lower tides
Wind, water and seasons
Wind
- Direction
- E, ESE, SE
- Offshore directions
- E, ESE, SE
- No-go directions
- S, SSW, SW, WSW, W, NW, NNW
- Wind Range
- 5–15 kts
- Wind Type
- Trade — E to SE trade winds
- Reliability
- Reliable offshore when swell/pulse days line up; the break is primarily a surf wave destination rather than a wind-dependent site.
- Gust Factor
- Light gusts
- Best Months
- April, May, June, July, August, September, October
Water & beach
- Water Type
- Ocean, Swell
- Beach
- Reef — Reef/coral and rocks; beach access is not applicable in the usual sense.
- Beach Size
- Small
- Waves
- Big — Works from less than 1 m and holds up to 3 m+; reported range includes chest-high to triple overhead (about 3–12 ft).
- Launch
- Small — No beach launch; access is by boat/jumping or paddling from a moored vessel.
- Launch Difficulty
- Expert only — Expert-only access/launch conditions due to boat jump/paddle entry and reef hazards.
Through the year
Peak during June to August when charter boats may anchor at the spot.
November to March (wet season); wet season typically increases rainfall and gustiness.
By sport
What to expect for each.
A heavy, bowly left-hander reef break on a coral/rock bottom with multiple sections along a long stretch of reef. It can be hollow and mechanical on smaller swells and top-to-bottom on bigger waves; the biggest swells are especially heavy and fast for advanced/expert surfers.
- Wave Direction
- Left
- Optimal Swell
- S, SSW, SW, SE, SSE, WSW
- Swell Height
- 3–12 m
- Optimal Tide
- All tides — Works on all tides, but lower tides can make the inside sections very shallow and hazardous.
- Shelter
- Exposed
- Wind Effect
- E to SE winds provide clean offshore conditions; winds from the west/southwest are onshore and detrimental.
- Bigger Swell
- Holds the biggest swells and can become an intense, heavy barrel/hold-down challenge for experts as size increases; can handle up to ~20 ft face waves in some reports.
- Wave Quality
- World class — Described as epic/world-class and among the most consistent left-hand reef breaks in the Mentawais.
- Wave Power
- Powerful
- Wave Shape
- Hollow — Hollow takeoff with a fast, walling inside section; multiple sections along the reef stretch.
- Peel Speed
- Fast
- Ride Length
- Long — Good day length 150 to 300 m; normal length 50 to 150 m; typical run often cited as 150 to 300 m.
- Typical Ride Length
- 150–300 m
- Ride Length Details
- Good day length commonly 150 to 300 m; normal length commonly 50 to 150 m. Inside section includes a hollow takeoff and a fast, walling inside.
Check the forecast before you go
See wind, waves, weather and session windows for Thunders in the full forecast view.
Thunders wind and wave forecast summary
- Wind
- 4–9 ktsGusts 21 kts
- Direction
- SE145°
- Strongest day
- Sat, Oct 249 kts
- Windy days
- 0/712 kts or more
- Waves
- 1.1–2.5 m11s period
- Temperature
- 25–31 °C
Over the next 7 days, Thunders is forecast for daytime winds of 4–9 kts, peaking around 9 kts on Saturday, October 24 with gusts to 21 kts. The prevailing direction is SE. Waves run 1.1–2.5 m with a period of about 11s. Based on the Wavind model, in the spot’s local time.
Other spots in the area
What to know before you launch
Safety, access, restrictions, rescue, and local rules can change. Treat these details as informational and confirm them locally before launching.
Hazards
- reef cuts
- hold downs
- rocks
- sharp coral reef
- submerged rock heads
- shallow inside sections on lower tides
- strong currents
- shifting lineup
- mooring lines from charter boats
- extreme remoteness
Rescue & support
- Rescue & Self-Rescue
- No — No formal on-site rescue availability is indicated at the break; regional rescue is limited and depends on private charters/resorts.
- Emergency Info
- Medical facilities are extremely limited; serious emergencies may require evacuation to Padang (long boat journey or expensive medivac). Emergency numbers in Indonesia may include 112/119 for medical services.
- Localism / Vibe
- None — Localism is described as none in one dataset.
Rules of the spot
Priority is given to those deepest on the peak (standard surf etiquette).
- Boat access only (no beach launch).
- Launch is performed by jumping from a boat or paddling from a moored vessel.
- The inside section can get extremely shallow and hazardous on lower tides.
- Be prepared for a workout as the current can push riders away from the primary takeoff zone.
- Use bigger boards to help manage strong currents.
- Tricky, shifting lineup conditions—experienced surfers only.
Getting there & access
- Nearest City
- Padang
- Nearest Town
- Sikakap
- Nearest Airport
- Minangkabau International Airport (PDG)
- Parking
- Not applicable (no road access).
- Public Transport
- Sea-only access from Padang area (ferry to Sikakap/Tua Pejat, then private boat transfers).
- Access
- Boat access only; charter boat/specialized speedboats required for South Mentawai / Pagai Selatan.
- Cost Level
- Expensive
- Local Language
- Indonesian
What's on the beach
- Accommodation
- Nearby town — Surf resorts in the South Pagai area or live-aboard charter boats; accommodation is limited and oriented around surf trips.
- Food & Drink
- Provided exclusively by charter boats or the resort where you are staying.
- Equipment Rental:
- Very limited; most riders must bring their own boards and backup gear.
- Gear Storage
- Onboard charter vessels; storage available at private resorts for guests (gear storage for guests).
- Gear Repair
- Basic DIY repair kits are usually available on charter boats.
No schools or services are listed for this spot yet.
Off the water
The Mentawai region is largely focused on world-class surfing and ocean adventure, with boat-based island exploration and other ocean activities.
From riders who've been here
Latest reported conditions
Spot questions
Frequently asked questions
When is the best season at Thunders?
The best overall months at Thunders are April, May, June, July, August, September, October.
Which wind directions work at Thunders?
Thunders works with E, ESE, SE winds. Offshore directions are E, ESE, SE. No-go directions are S, SSW, SW, WSW, W, NW, NNW.
What skill level is Thunders suitable for?
Thunders suits these riding levels: Surfing: Advanced to Expert.