Aina Haina / Niu reefHonolulu
dangerousexposed head-on to the swell today
- window
- tide
- shelter
- hazard
- access
Maunalua Bay reef edge; papio, goatfish and uku.
Google MapsHonolulu spearfishing forecast — wind, swell, visibility, tides & live cameras
2.6
💧 Water looks set to clear by Tuesday (~6d) — tentative
visibility2m
Today — sit it out — wave, wind and surge pounding. 💧 Water looks set to clear by Tuesday (~6d) — tentative
Sources: IPMA · NDBC · Copernicus — high confidence · data 13:24
Sources & confidence
- Sources
- IPMA · NDBC buoys · Copernicus Marine
- Method
- Model consensus, read per window
- Freshness
- Re-read every hour, per coast
Compiled by the spearo sea-state engine
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 — forced red; the window is closed after dark.
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
Surface
Wind, wave and the swell windows — when to go and the best hours.
spearo.app
calmupdated 13:24
Honolulu — solo, off the rocks
don't go · wave 1.5 m (occasionally up to ~3.0 m)
wave 1.5 mwind 21, gusts 50 km/hsurge pounding the rocksvisibility ~3 m
today, best window 18:00–21:00
fish · Visibility 3 m · Water 26.9°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.
Wednesday · today2026-07-22
06:01–19:14 · first quarter
▼ 03:00▲ 12:00 · 0.5 m
Hours (06→20)
12
15
18
Day's trends
Tide0.49 m
Wave1.46 m
Wind16 km/h
Water27 °C
fish activity: moonset 00:24 · moderate · moon underfoot 07:10 · high · moonrise 13:59 · moderate · moon overhead 19:30 · high
Conditions window12:00–15:00
don't go fish
Hs 1.56 mperiod 9.7 swind 24→57surge 12.2viz 1 m
1.56 mup to ~3.12 · 174° at an angle
9.7 sswell moderate
24→57gusts 57 km/h
12.2pounding the rocks
0.11m/s
1 mrecent swell
26.9°C5 mm + hood
▼04:00tide turn near
Atmosphere5 kmprecip 0.5 mm
moderatemoonrise
- wave 1.6 m (occasionally up to ~3.1 m)
- steep wind-wave — choppy surface, careful on entry
- ebb — weaker inshore
confidence lowday
The water column
Visibility and what drives it — post-storm clearing, river plume, temperature and the thermocline.
What it is
A marine instrument,
go / no-go for solo hunting.
spearo.app folds wind, wave, swell period, visibility, tides, water temperature and risk into a single verdict — go to the spot or not. It computes 7 days ahead from open marine models (Open-Meteo, IPMA), with no sign-up and no accounts. Built for solo spearfishing off the rocks, where any mistake costs dearly.
Now live: 1152 spots across 189 stretches of coast — mainland Portugal, Madeira and the Azores.
See all spotsThe seabed
Relief and bottom type, tides, and the depths of each spot.
On the rock
The forecast is the plan.
The call is on the rock.
The models set the window. Whether you go in is read only at the water: count the sets, watch the surge on the entry. If in doubt, you don't get in.
Entry points
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
Kaka'ako / Kewalo outer reefHonolulu
dangerousexposed head-on to the swell today
- window
- tide
- shelter
- hazard
- access
Harbor-adjacent reef off Kaka'ako; uku, goatfish and papio — stay west (east is the Waikiki MLCD).
Google MapsKāhala-Wai'alae reef flatsHonolulu
dangerousexposed head-on to the swell today
- window
- tide
- shelter
- hazard
- access
Broad reef flat; oio, papio and goatfish (moana, weke).
Google MapsSOLO 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.
Surfacing
Cameras, map and reference — to hand as you come up.
Live cameras, map & reference
Cameras · live
Look at the water
right now.
Check the cam BEFORE you leave. Foam, brown/green murk, or waves washing the entry rocks = No-go. At night/in fog the cam is useless — treat it as «unknown», NOT «green».
Reference
What's in season,
what the law says.
In season now
- uhu (parrotfish)Uhu (parrotfish), Maui: ≤2/day, 10–14″ min; taking blue (terminal) males is PROHIBITED.
- ulua (giant trevally)
- kumu (goatfish)
- roi (peacock grouper)Invasive — removal encouraged, no limit. Roi can carry ciguatera — a health caution.
- ta'ape (bluestripe snapper)Invasive — removal encouraged, no limit. Roi can carry ciguatera — a health caution.
Law
- ✓No licence for residents; non-residents need the Nonresident Recreational Marine Fishing License ().
- ✓MLCDs — no-take. West Hawai'i — scuba-spear banned. Uhu (Maui): ≤2/day, no blue males. Roi/ta'ape invasive — removal encouraged.
- ⛔ 🚫 Marine Life Conservation Districts (Hanauma/Molokini/Pupukea etc.) — no-take: spear nothing. West Hawai'i — scuba-spear banned.
- ⛔ 🚫 Sea turtles, monk seal and cetaceans — protected, don't disturb. Uhu: blue terminal males (Maui) may not be taken.
US spearfishing law is state-by-state. License, spearable species, powerhead rules and distances vary; federal sanctuaries (Gray's Reef, the Keys, Flower Garden Banks) ban spearfishing. Always confirm with the state agency and local ordinances.
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.
Spearfishing in Honolulu: spots, seasons and rules
Honolulu spearfishing is a south-shore reef puzzle, not a bluewater gamble. Kaka'ako and Kewalo sit just west of the Waikiki Marine Life Conservation District, so the legal boundary matters before the fish do. Kahala-Waialae and Aina Haina/Niu give wider flats and Maunalua Bay edges with papio, goatfish, uku and oio, but they still need small surf from the south sector. For Honolulu water visibility, check the Waikiki cams, NOAA station 51202 and wind: light trades are workable, fresh south swell is the warning.
TL;DR
- Best Honolulu choices are west of the Waikiki MLCD: Kaka'ako and Kewalo for harbor-side reef, Kahala-Waialae for reef flats, and Aina Haina or Niu for Maunalua Bay edges.
- The south shore is sheltered, but a south swell in the 150 to 230 degree sector can ruin entries and visibility fast.
- Use the Waikiki and coastline cams with NOAA station 51202; light trades and small surf are the practical spearfishing Honolulu window.
- Hawaii rules are specific: nonresidents need the marine license, MLCDs are no-take statewide, the West Hawai'i FMA scuba-spear ban applies to the Big Island, and Maui uhu limits do not apply on O'ahu; check O'ahu MLCD boundaries before loading.
Best spearfishing spots in Honolulu
These are shore-access reef areas with moderate solo risk. None is a shortcut into Waikiki MLCD or Hanauma Bay. Treat any uncertain boundary as closed, and keep the hunt outside marked conservation water.
| Spot | Type | Depth | Level | Access | Notes |
|---|---|---|---|---|---|
| Kaka'ako / Kewalo outer reef | Harbor-adjacent outer reef | Shallow reef to edge water | Intermediate | Shore or harbor-adjacent entry when seas are settled | Good for uku, papio and goatfish. Stay west of the Waikiki MLCD and give boat traffic a wide margin. |
| Kahala-Waialae reef flats | Broad south-shore reef flat | Reef flats and channels | Intermediate | Shore entry only after checking swell and exit points | A flatter profile than Kewalo, with oio, papio and weke. Visibility fades when surf wraps across the flats. |
| Aina Haina / Niu reef | Maunalua Bay reef edge | Shallow reef edge | Intermediate | Shore entry with a conservative return route | Papio, goatfish and uku move along the bay edge. Night spear possession is restricted inside the Maunalua Bay FMA. |
When does Honolulu water visibility improve?
Visibility usually improves when the south shore has several calm days, short-period chop stays low, and trade winds do not push dirty harbor water along the reef line. NOAA station 51202 is useful because the Mokapu buoy shows regional wave height and direction before that energy wraps into town. A south swell is the main spoiler for Kewalo, Kahala and Maunalua. If the swell points into the 150 to 230 degree band, plan a reef check from shore before loading the gun.
What can you target around Honolulu?
Common legal targets are papio and ulua, goatfish such as weke and kumu, uku on deeper edges, and invasive roi or ta'ape where they are present. Roi removal is encouraged, but ciguatera remains a health caution. Sea turtles, monk seals and cetaceans are fully protected and should be given space. Avoid treating uhu as a simple reef target: Hawaii rules vary by island and area, and protected local rules can be stricter than general practice.
What rules matter most on Oahu?
Hawaii allows spears for finfish subject to size, season and area restrictions, but crustaceans, turtles and aquatic mammals are off limits to spears. Nonresidents need the Nonresident Recreational Marine Fishing License. Waikiki MLCD and Hanauma Bay are no-take for spearfishing purposes; do not enter them with gear intended to take marine life. In Maunalua Bay, restrictions apply to spear possession while diving at night, so keep Honolulu freediving daytime and boundary-aware.
FAQ
Is Waikiki legal for spearfishing?
No. The Waikiki MLCD is no-take. Stay outside the boundary and treat unclear water as closed.
Which NOAA station helps for Honolulu?
NOAA NDBC station 51202, Mokapu Point, is the closest buoy named for this coast.
Do residents need a Hawaii marine fishing license?
Residents generally do not. Nonresidents need the NRMFL before marine recreational fishing.
Can you spear lobster in Hawaii?
No. Hawaii prohibits spearing crustaceans, with only a narrow freshwater prawn exception.
What ruins Honolulu visibility fastest?
South swell, harbor runoff, and wind-driven chop across the reef flats are the main problems.
Sources
Nearby towns
Coming soon
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