Mersin · Turkey

8.2

wave 0.1 m

visibility5m

Dive today — wave, wind and visibility.

Sources: Open-Meteo · Copernicus · Sentinel-2 — high confidence · data 06:03

Sources & confidence

Sources: Open-Meteo · Copernicus · Sentinel-2
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 06:03

Mersin — solo, off the rocks

BEST WINDOW

best weather window · solo, stay careful, run the checklist · calm conditions: swell, wind and visibility all normal

wave 0.1 mwind 7 km/hvisibility ~5 mwindow 06:00–18:00

today, best window 06:00–09:00

fish · Visibility 5 m · Water 25.1°C

confidence high · 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.

Sunday · today2026-10-25

06:58–17:52 · full moon

▼ 04:00▲ 10:00▼ 16:00▲ 22:00 · 0.4 m

Hours (06→20)

Day's trends

Tide-0.10 m

Wave0.08 m

Wind7 km/h

Water25 °C

fish activity: moonset 05:58 · moderate · moon underfoot 11:30 · high · moonrise 17:09 · moderate · moon overhead 00:00 · high

Conditions window06:00–09:00

best weather window · solo, stay careful, run the checklist fish

Hs 0.08 m · calmperiod 2.7 swind 7→10surge 0viz 5 m

0.08 mcalm · up to ~0.16 · 222° at an angle

2.7 sswell moderate

7→10gusts 10 km/h

0weak surge

0.00m/s

5 msatellite: water here is usually murkier

25.1°C5 mm + hood

▲10:00tide rising

Atmosphere37 kmlandmarks visible

moderatemoonset

calm conditions: swell, wind and visibility all normal
dawn/dusk

confidence hightwilight

Open the seafloor map with entry points

More spots

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What's in season,
what the law says.

In season now

European seabass
Dicentrarchus labrax · 0–15 m · tebliğ 6/2
gilthead seabream
Sparus aurata · 2–20 m · tebliğ 6/2
common dentex
Dentex dentex · 12–40 m · tebliğ 6/2
white seabream
Diplodus sargus · 0–12 m · tebliğ 6/2
two-banded seabream
Diplodus vulgaris · 1–15 m · tebliğ 6/2
common pandora
Pagellus erythrinus · 10–40 m · tebliğ 6/2
meagre
Argyrosomus regius · 5–30 m · tebliğ 6/2
leerfish
Lichia amia · 2–20 m · tebliğ 6/2
bluefish
Pomatomus saltatrix · 0–20 m · tebliğ 6/2
Min 18 cm (lüfer <14 cm = «çinekop» — separate rule).
red mullet
Mullus barbatus · 3–30 m · tebliğ 6/2
tub gurnard
Chelidonichthys lucerna · 5–30 m · tebliğ 6/2
white grouper
Epinephelus aeneus · 15–45 m · ⚠️ 1/day
⚠️ Lagos: min 50 cm, with a speargun max 1/day, closed season 1 Jun–31 Aug (Çizelge 7). A vulnerable, slow-growing species — do NOT take it. Its cousin orfoz is FULLY BANNED.
dusky grouper
Epinephelus marginatus · 8–35 m · 🚫 BANNED (Çizelge 1)
🚫 Orfoz is FULLY BANNED (Çizelge 1, RG 11.08.2024 №32629) — not a legal target. Size is irrelevant: do not take it, release it.
pufferfish
Lagocephalus spp. · 2–40 m · invasive
☠️ DO NOT EAT: deadly TTX toxin (not destroyed by cooking, no antidote). Amateur rule: kill it and throw it back to open sea — bringing it ashore/into a harbour is BANNED (3,770 TL fine). No bounty for amateurs (commercial SUBİS boats only).
lionfish
Pterois miles · 5–40 m · invasive
Invasive (venomous spines!). There is NO official amateur permit/reward for culling — never grab bare-handed, treat a sting with hot water (>45 °C). Flesh is edible.
rabbitfish
Siganus spp. · 2–20 m · invasive
Invasive (Eastern Med). Apparently no dedicated size/count/season limit (not confirmed against the current tebliğ — verify). Venomous spines — remove carefully.

Law

✓Since 1 Jan 2026 amateur spearfishing requires an Amatör Balıkçı Belgesi marked for the diving method (Tebliğ 2024/21, md. 16(4)(ç); the document itself is issued under md. 4(1), via e-Devlet, valid 5 years) — the old citizen exemption no longer applies to spearguns. A FOREIGN TOURIST is still NOT automatically entitled to spearfish solo (md. 5): the documented route is a licensed av-turizmi boat/guide OR a permit (pusula) from the district agriculture directorate. Get the belge, then the permit or a guide.
✓Breath-hold + snorkel only — scuba/hookah/spare-air are banned (Tebliğ 2024/21, md. 16(4)(b)). Night prohibited — sunset to sunrise (md. 16(4)(a)). A buoy showing your position is MANDATORY (md. 16(4)(c)). Spearfishing is banned inside buoyed swimming areas (1 Apr–15 Nov, ≤200 m from shore — md. 16(5)) and in ports, fishing shelters and slipways (md. 17(4)).
✓Invasives: the lionfish (aslan balığı) — invasive, ⚠️ venomous spines; there is NO official amateur permit/reward for taking it. The pufferfish (balon balığı) ☠️ NEVER EAT — tetrodotoxin, no antidote; kill it and return it to the open sea, BRINGING IT ASHORE/TO PORT IS BANNED. Exact sizes and zones — in the species card and the guide.
✓The speargun is lawful amateur gear AT SEA (Tebliğ 2024/21, md. 16(2)(a)). In INLAND waters — lakes, reservoirs, rivers — the speargun and the hand harpoon are banned outright (md. 13(2)).
✓Selling an amateur catch, moving it alive or releasing it into other waters is prohibited (Tebliğ 2024/21, md. 8(1)). The weight limit is 5 kg per person per outing, one species or mixed; a single fish over 5 kg is legal in itself, but the rest without it must fit in 4 kg (md. 15(4)). For species limited by count, no more than 3 fish in total per person per outing, however many days it lasts (md. 15(5)).
✓Minimum sizes and per-species counts come from the tebliğ's Çizelge 7: keeping fish below the stated length or above the stated number is prohibited (Tebliğ 2024/21, md. 15(1)); on lengths there is a 5 % downward tolerance (note 2 to the same table).
✓Totally protected species — Çizelge 1 (Tebliğ 2024/21, md. 6(1)): the DUSKY GROUPER (Epinephelus marginatus), most sharks and rays, the monk seal, sea turtles, Pinna nobilis, red coral, Posidonia oceanica, the European eel, the seahorse, Maja squinado, Tonna galea and cetaceans. They may be taken neither at sea nor in inland waters.
✓Light as a fishing method is banned in amateur fishing; lighting up to 50 W for safety on board or ashore does not count (Tebliğ 2024/21, md. 8(8)). Fishing closer than 100 m to the boundaries of sea cages, or 200 m to shore-based facilities, is prohibited (md. 8(5)).

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 Mersin

Where can I spearfish in Mersin?

Mersin has rock entry points such as Erdemli kayaları, Yapraklı Koyu and Susanoğlu/Atakent. The real fishing is NOT the port but the western districts: the Erdemli rocks, Yapraklı Koyu, Susanoğlu/Atakent. Below you'll find each spot (access, shelter and hazards) and today's forecast.

When is the best season in Mersin?

Long season (April–November). Turkish Central Med (Antalya, Alanya, Mersin): warm water, rock and sand. The lionfish is increasingly common — take it, but mind the spines. Lots of swimmers in summer — keep your distances.

How cold is the water in Mersin?

~17 °C in winter, ~28 °C in summer. 2–3 mm in summer. Warm water, rock and sand. Good visibility away from the rivermouths; after rain off Mersin/Antalya there's murk. No tide.

Is Mersin good for a beginner?

Easy–moderate: warm water, rock and sand, a long season. Beginner-friendly, but lots of swimmers in summer — keep your distances. Lionfish: take it, the spines are venomous.

Do I need a licence in Mersin?

In Mersin, tourists can't freely hunt alone — under the 6/2 tebliğ the lawful path is with a licensed boat/guide holding a 6/1 av-turizmi permit, or with a permit from the local il/ilçe müdürlüğü. Apnea only (no scuba), buoy mandatory, night banned, ≤5 kg / ≤3 fish per day. See the guide.

Full guide: spearfishing in Türkiye →

Surface

Windows, hours
and the day's trends.

Spots in Turkey

🇹🇷Turkey

Nearby towns

Central Mediterranean (Turkey)

Hatay (Gulf of İskenderun)

West Mediterranean (Turkey)

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 Mersin

Central Black Sea

East Black Sea

South Aegean

West Black Sea

Marmara

Mersin spearfishing forecast — wind, swell, visibility & live cameras

Windows, hours and the day's trends.

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

Spots in Turkey

🇹🇷Turkey

Nearby towns

Central Mediterranean (Turkey)

Hatay (Gulf of İskenderun)

West Mediterranean (Turkey)

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 Mersin

Central Black Sea

East Black Sea

South Aegean

West Black Sea

Marmara

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.