Tulamben · Indonesia

2.7

wave 1.1 m

visibility3m

Today — sit it out — wave, wind and surge pounding.

Sources: Open-Meteo · Copernicus — high confidence · data 22:58

Sources & confidence

Sources: Open-Meteo · Copernicus
Method: spearo sea-state engine: consensus of up to 6 models + satellite clarity (ZSD) + buoy-bias checks
Freshness: Re-read every hour, per coast

Compiled by the spearo sea-state engine · How it works →

The verdict comes from seven water factors and hard safety gates — not ten tabs. Go or stay.

How we score the water

Our own model

Our own forecast engine — not a third-party widget. It weighs these water factors into one go-or-stay verdict for this coast; the 0–10 dial is that verdict, read out as a number.

Swell & wave memory: Height, period and direction of the swell, plus the wake of recent storms — an old storm still stirs the water, and the engine remembers.
Wind & gusts: Speed and gusts, hour by hour — wind speed and an onshore push chop the surface and cut visibility.
Tide phase: Timing and range of the tide, calibrated per coast — big spring tides pull the verdict toward caution.
Water temperature: Sea-surface temperature — sharply cold water vetoes a green verdict.
Currents & outflow: Direction and drift of the current — it pushes you, and it drags turbid coastal water across where you dive.
Rain runoff & air clarity: Rain muddies the water inshore through land runoff, while fog and haze cut visibility at the surface.
Coast shape & exposure: How the coast faces the swell — a sheltered cove keeps the water clean; an exposed, head-on point takes a penalty.

Safety gates

Thunderstorm forecast — an instant red, no exceptions.
An official warning (MeteoAlarm / IPMA) — yellow, or red for the higher ranks.
Missing input data — a would-be green is capped to yellow rather than overstated.
Strong disagreement between forecast models — a green day is pulled back to yellow.
Night hours — where night spearfishing is banned by law the window is forced red; where it is legal (Australia outside NSW, New Zealand, South Africa) it is capped at yellow, never green.

It all folds into a single 0–10 score and one verdict: go or stay.

A forecast, not a guarantee — the sea has the last word.

Where to get in, where to hunt

Entry points with coordinates

Seabed relief — promising ground

This verdict — in your pocket. Open the app for the week's window.

Google Play — QR code — point your camera

0 m

Surface

Wind, wave and the swell windows — when to go and the best hours.

spearo.app

updated 22:58

Tulamben — solo, off the rocks

DON'T GO

don't go · wave 1.1 m (occasionally up to ~2.3 m)

wave 1.1 mwind 9 km/hsurge pounding the rocksvisibility ~3 m

today, best window 06:00–09:00

fish · Visibility 3 m · Water 28.6°C

confidence low · verdict for the selected day

Whole week — tap a day. is driving swell right now.

Solo risk: carry a float · tell someone your plan and exit time · doubt = don't go. A model-based planner; the call is made on site.

Selected day

Windows, hours
and the day's trends.

The day is picked above, in the hero. Here are that day's windows, the hour-by-hour map and the trends. Tap a window to break down the conditions.

Tuesday · today2026-10-13

05:56–18:11 · waxing crescent

▼ 06:00▲ 13:00▼ 17:00▲ 23:00mid-range tides · 1.4 m

Hours (06→20)

Day's trends

Tide1.09 m

Wave1.18 m

Wind13 km/h

Water29 °C

fish activity: moon underfoot 01:30 · high · moonrise 07:30 · moderate · moon overhead 14:00 · high · moonset 20:23 · moderate

Conditions window06:00–09:00

don't go fish

Hs 1.14 m · roughperiod 11.4 swind 9→16surge 2.2viz 3 m

1.14 mrough · up to ~2.28 · 182° at an angle

11.4 sswell building

9→16gusts 16 km/h

2.2pounding the rocks

0.67m/s

3 mrecent swell

28.6°C5 mm + hood

▲13:00tide turn near

Atmosphere0 kmlandmarks visible

moderatemoonrise

wave 1.1 m (occasionally up to ~2.3 m)
wind-wave — choppy surface
first hours of the flood — fish moving in

confidence lowtwilight

Open the seafloor map with entry points

More spots

Spots in Indonesia

🇮🇩Indonesia

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Nearby towns

Lombok & Sumbawa

Bali

Feedback

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What's missing? Tell us what you'd like to see — new spots, species, data or features. We read everything.

Where to get in
off the rocks.

Scouted entries, coloured by today. The colour is the sea state at the spot, not a guarantee: the wash and a slippery entry you judge on site.

Open the seafloor map

Alam Batu HousreefTulamben

dangerous

⚠ Restrictions apply

in the headland's lee today — swell from the quarter/behind

window: —

Listed dive site, typical depth 15 m, max 25 m, near shore. No spearfishing — dive site; freediving/visibility point. Coords from a dive-site database, approx.

Google Maps

Angel CanyonTulamben

dangerous

⚠ Restrictions apply

in the headland's lee today — swell from the quarter/behind

window: —

Listed dive site, typical depth 7 m, max 40 m, near shore. No spearfishing — dive site; freediving/visibility point. Coords from a dive-site database, approx.

Google Maps

Batu KlebitTulamben

dangerous

⚠ Restrictions apply

in the headland's lee today — swell from the quarter/behind

window: —

Listed dive site, typical depth 25 m, max 60 m, near shore. No spearfishing — dive site; freediving/visibility point. Coords from a dive-site database, approx.

Google Maps

Coral GardenTulamben

dangerous

⚠ Restrictions apply

in the headland's lee today — swell from the quarter/behind

window: —

Listed dive site, typical depth 12 m, max 25 m, near shore. No spearfishing — dive site; freediving/visibility point. Coords from a dive-site database, approx.

Google Maps

Emerald bayTulamben

dangerous

⚠ Restrictions apply

in the headland's lee today — swell from the quarter/behind

window: —

Listed dive site, typical depth 8 m, max 15 m, near shore. No spearfishing — dive site; freediving/visibility point. Coords from a dive-site database, approx.

Google Maps

KubuTulamben

dangerous

⚠ Restrictions apply

in the headland's lee today — swell from the quarter/behind

window: —

Listed dive site, typical depth 20 m, max 40 m, near shore. No spearfishing — dive site; freediving/visibility point. Coords from a dive-site database, approx.

Google Maps

SearyaTulamben

dangerous

⚠ Restrictions apply

in the headland's lee today — swell from the quarter/behind

window: —

Listed dive site, typical depth 10 m, max 20 m, near shore. No spearfishing — dive site; freediving/visibility point. Coords from a dive-site database, approx.

Google Maps

The RiverTulamben

dangerous

⚠ Restrictions apply

in the headland's lee today — swell from the quarter/behind

window: —

Listed dive site, typical depth 8 m, max 15 m, near shore. No spearfishing — dive site; freediving/visibility point. Coords from a dive-site database, approx.

Google Maps

Tulamben Drop OffTulamben

dangerous

⚠ Restrictions apply

in the headland's lee today — swell from the quarter/behind

window: —

Listed dive site, typical depth 25 m, max 60 m, near shore. No spearfishing — dive site; freediving/visibility point. Coords from a dive-site database, approx.

Google Maps

USAT Liberty WreckTulamben

dangerous

⚠ Restrictions apply

in the headland's lee today — swell from the quarter/behind

window: —

Listed dive site, typical depth 15 m, max 30 m, near shore. No spearfishing — dive site; freediving/visibility point. Coords from a dive-site database, approx.

Google Maps

SOLO is the biggest risk: underwater you can black out from lack of oxygen silently and fatally, with no one around. Solo is never truly «safe». Below are the best weather windows; carry a buoy, tell someone your plan and exit time, and any doubt — don't go.

What's in season,
what the law says.

In season now

no targets this month

Law

Recreational spearfishing with a speargun is allowed in Indonesia (Ministerial Reg. KP 27/2021, Art. 10(3)(c)), but not at dive sites, ports, shipping lanes, spawning grounds or zones whose zoning bans fishing (Art. 9(2)); limit 100 kg or 50 fish per boat per trip. National parks and MPAs (Komodo, Bunaken, Wakatobi, Raja Ampat, Nusa Penida, Gili Matra…) have no-take zones. Sharks, rays, manta, whale shark, dugong, turtles and Napoleon wrasse are protected. Breath-hold only. Check local rules.

Safety protocol

Sets: watch the wave trains ≥15 min before entering; Hmax ≈ 2×Hs, the wash can run 50 m past the foam line. A lull >10 min with period >12 s = a big set «overdue», do NOT enter; enter right after a full set passes and re-check at minute 30.
Exit FIRST: find your exit AND a backup before entering. On a rocky/boulder shore a 0.5 m rise in swell can make the exit impossible — getting pinned/unable to climb out is the main killer.
Headland rip: prominent points often have a permanent topographic rip regardless of the model — locate it, enter/exit on the windward side, never swim against it.
Cold: wetsuit per the SST chip; the first shiver = a metabolic surge and a drop in breath-hold → get out at the first steady shiver. Cap the session at 45–60 min below 15 °C.
Solo discipline: buoy up; tell someone the spot and exit time; conservative breath-hold (never push it in cold/murky/surfy water); visibility <3 m — don't enter.
Afternoon wind: on many coasts the wind builds from midday — plan to be out of the water by midday; the chop builds — get out.
UV 11:00–15:00 (UVI ≥6): sunscreen and cover up on the surface interval.
Solo is a fundamental risk (hypoxic blackout with no buddy). Any doubt = No-go.

FAQ — spearfishing in Tulamben

Where can I spearfish in Tulamben?

Tulamben has rock entry points such as Coral Garden, USAT Liberty Wreck and The River. Shore-dive coast of NE Bali under Mount Agung, open to the Bali Sea and usually flat outside the NW-monsoon months. Below you'll find each spot (access, shelter and hazards) and today's forecast.

When is the best season in Tulamben?

Dry season (April–October, SE trades) for Bali, Lombok and Nusa Tenggara; Raja Ampat and North Sulawesi are best October–April. Check which side the monsoon hits.

How cold is the water in Tulamben?

26–30 °C across most of the archipelago — 1.5–3 mm; south-coast upwelling (Nusa Penida, south Java and Lombok) can drop it to 20–23 °C.

Is Tulamben good for a beginner?

From easy reef shallows to strong-current straits (Nusa Penida, Komodo). No hunting at dive sites, ports or park no-take zones — every listed spot is marked no-take.

Do I need a licence in Tulamben?

Tulamben: Recreational spearfishing with a speargun is allowed in Indonesia (Ministerial Reg. KP 27/2021, Art. 10(3)(c)), but not at dive sites, ports, shipping lanes, spawning grounds or zones whose zoning bans fishing (Art. 9(2)); limit 100 kg or 50 fish per boat per trip. National parks and MPAs (Komodo, Bunaken, Wakatobi, Raja Ampat, Nusa Penida, Gili Matra…) have no-take zones. Sharks, rays, manta, whale shark, dugong, turtles and Napoleon wrasse are protected. Breath-hold only. Check local rules.

Surface

Windows, hours
and the day's trends.

Spots in Indonesia

🇮🇩Indonesia

Nearby towns

Lombok & Sumbawa

Bali

Help us make it better

The water column

A marine instrument,
go / no-go for solo hunting.

The seabed

The forecast is the plan.
The call is on the rock.

Where to get in
off the rocks.

Surfacing

What's in season,
what the law says.

FAQ — spearfishing in Tulamben

Java

Flores, Komodo & Alor

Sulawesi

Sumatra

Kalimantan (Derawan)

Maluku & Raja Ampat

Tulamben spearfishing forecast — wind, swell, visibility, tides & live cameras

Windows, hours and the day's trends.

Get the go / no-go verdict for Tulamben by email

Spots in Indonesia

🇮🇩Indonesia

Nearby towns

Lombok & Sumbawa

Bali

Help us make it better

A marine instrument, go / no-go for solo hunting.

The forecast is the plan.The call is on the rock.

Where to get in off the rocks.

What's in season, what the law says.

FAQ — spearfishing in Tulamben

Java

Flores, Komodo & Alor

Sulawesi

Sumatra

Kalimantan (Derawan)

Maluku & Raja Ampat

Windows, hours
and the day's trends.

A marine instrument,
go / no-go for solo hunting.

The forecast is the plan.
The call is on the rock.

Where to get in
off the rocks.

What's in season,
what the law says.