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

Premantura · Croatia
5.3
wave 0.3 m head-on
visibility4m

Today — right on the edgewave, wind and visibility.

Sources: IPMA · NDBC · Copernicushigh confidence · data 17:37

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

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

Android: the public release is in Google Play review — leave your email and we'll send beta access today.

Android beta — QR code
point your camera
0 m

Surface

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

spearo.app
calmupdated 17:37
Premantura — solo, off the rocks
BORDERLINE
caution — solo off the rocks is risky, check on site · northerly wind picks up after midday
wave 0.3 m head-onwind 10 km/hvisibility ~6 mwindow 15:00–21:00
today, best window 18:00–21:00
fish · Visibility 6 m · Water 25.1°C
confidence medium · 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
05:3920:42 · first quarter
02:00 07:00 15:00 · 0.4 m
Hours (06→20)
15
18
Day's trends
Tide-0.69 m
Wave0.14 m
Wind6 km/h
Water25 °C
fish activity: moon underfoot 07:20 · high · moonrise 15:00 · moderate · moon overhead 19:40 · high
Conditions window15:00–18:00
caution — solo off the rocks is risky, check on site fish
Hs 0.44 mperiod 3 s head-onwind 16→35surge 0.1viz 4 m
0.44 mup to ~0.88 · 70° head-on
3 sswell moderate
16→35gusts 35 km/h
0.1weak surge
0.11m/s
4 mrecent swell
25.1°C5 mm + hood
▼01:00tide turn near
Atmosphere45 kmlandmarks visible
moderatemoonrise
  • wind-wave — choppy surface
  • strong wind 16 km/h, gusts 35 — caution
  • ebb — weaker inshore
confidence lowday
Open the seafloor map with entry points

Your best window — with you. Forecast in your pocket.

Android: the public release is in Google Play review — leave your email and we'll send beta access today.

Android beta — QR code
point your camera
−10 m

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 spots
−20 m

The 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
Galijola / FenoligaPremantura
borderline
in the headland's lee today — swell from the quarter/behind
window
tide
shelter
hazard
access

offshore islet reef; dentex, dusky grouper.

Google Maps
Premantura – južna stijenaPremantura
borderline
in the headland's lee today — swell from the quarter/behind
window
tide
shelter
hazard
access

south rock wall by Rt od polja; dentex, amberjack.

Google Maps
Rt Kamenjak – južni vrhPremantura
borderline
in the headland's lee today — swell from the quarter/behind
window
tide
shelter
hazard
access

rocky cape, current on the point; dentex, sea bass, amberjack.

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.

One morning glance — and you know.

Android: the public release is in Google Play review — leave your email and we'll send beta access today.

Android beta — QR code
point your camera

Surfacing

Cameras, map and reference — to hand as you come up.

Live cameras, map & reference
Open the seafloor map →
Reference

What's in season,
what the law says.

In season now
  • common dentex
    Dentex dentex · 12–40 m ·
  • gilthead seabream
    Sparus aurata · 2–20 m ·
  • European seabass
    Dicentrarchus labrax · 0–15 m ·
  • white seabream
    Diplodus sargus · 0–12 m ·
  • striped seabream
    Lithognathus mormyrus · 2–20 m ·
off season: dusky grouper (Jan Feb Mar Apr May Jun Sep Oct Nov Dec)
Law
  • Fan mussel (Pinna nobilis) — strictly protected, taking/disturbing prohibited (mass die-off from a pathogen).
  • Date mussel (Lithophaga lithophaga) — harvesting strictly banned (destroys the reef).
  • Seahorses (Hippocampus), loggerhead turtle (Caretta caretta) and monk seal (Monachus monachus) — protected, taking/disturbing prohibited.
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.
Local guide · Premantura

Spearfishing in Premantura: spots, seasons and rules

Updated 2026-07-09 · By Oleksandr, spearfisher

Premantura is best read from the landform outward. First comes Rt Kamenjak south tip, a rocky cape with current and a dentex, sea bass and amberjack mix. Then Galijola / Fenoliga shifts the plan to an offshore islet reef, where dentex appears with dusky grouper. The third row is the south wall by Rt od polja, again with dentex and amberjack. None of the three rows gives a numeric depth or a described access, and each carries a medium, yellow safety rating. The controlling local fact is exposure to the southern sector, not the length of the spot list.

TL;DR

  • Premantura is a cape-first Istrian route: Kamenjak tip, Galijola/Fenoliga reef and the Rt od polja south wall.
  • The Kamenjak row is about current and dentex, sea bass and amberjack; the islet row adds dusky grouper.
  • When the 120-240 degree arc is active, especially true south, the exposed southern end loses margin fast.

Which Premantura spots belong on the shortlist?

The shortlist stays tight: cape, islet reef, south wall. Do not treat them as interchangeable, because current at Kamenjak and exposure around the islet change the whole session.

SpotTypeDepthLevelAccessNotes
Rt Kamenjak – južni vrhCurrent-swept rocky capeNo numeric depthMedium; yellow safety ratingNot describedDentex, sea bass and amberjack. The point current is the practical filter.
Galijola / FenoligaOffshore islet reefNo numeric depthMedium; yellow safety ratingNot describedDentex and dusky grouper. Grouper is not open in July or August.
Premantura – južna stijenaSouth wall by Rt od poljaNo numeric depthMedium; yellow safety ratingNot describedDentex and amberjack on the south-facing wall, with no access detail given.

How should Premantura be checked before entry?

The exposure numbers are simple: aspect about 180 degrees, weak window when the 120-240 degree sector sends sea onto the coast, and true south around 180 degrees as the worst direction. There is no local webcam, river plume or nearby buoy in the city record, so the rock exit has to be judged directly. Croatian law, NN 48/2026, puts spearguns under the sport sea-fishing licence rather than the ordinary recreational permit. The method is breath-hold only, in daylight, for divers aged 16 or older, with a marker buoy and no more than two spearguns. Dusky grouper closes from 1 July through 31 August, with one fish maximum outside that closure.

FAQ

What is the Kamenjak spot?

Rt Kamenjak south tip is a rocky cape with current, carrying dentex, sea bass and amberjack.

Why does Galijola / Fenoliga change the legal check?

It includes dusky grouper, which is closed from 1 July through 31 August.

Do the rows give depth numbers?

No. The Premantura rows do not give numeric depths.

Which sea direction is the main warning?

True south around 180 degrees, inside the 120-240 degree bad sector.

Is scuba allowed with a speargun?

No. Croatian spearfishing is breath-hold only.

Sources

Nearby towns

Coming soon

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

Leave your email — and the moment a window opens at Premantura, we'll send the go / no-go verdict. Email is all we need.

Optional: city, channel, phone
What to send
Where to send it
26 countries · all spots

Pick your coast

Every covered town has its own live forecast, cameras and entry points. Choose where you're diving.

United StatesUnited States

USA map →
Feedback

Help us make it better

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