- window
- tide
- shelter
- hazard
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Reef/rock shore→28 m (35–40 max) — a famous N-Greece site, abundant Aegean species; easy W-side entry, meltemi-sheltered. Shore.
Google MapsToday — sit it out — wave, wind and visibility.
Sources & confidence
Compiled by the spearo sea-state engine
The verdict comes from seven water factors and hard safety gates — not ten tabs. Go or stay.
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.
Safety gates
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
Wind, wave and the swell windows — when to go and the best hours.
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.
Visibility and what drives it — post-storm clearing, river plume, temperature and the thermocline.
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 spotsRelief and bottom type, tides, and the depths of each spot.
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.
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 mapReef/rock shore→28 m (35–40 max) — a famous N-Greece site, abundant Aegean species; easy W-side entry, meltemi-sheltered. Shore.
Google MapsReef with an underwater tunnel 25–30 m, three spots to 42 m, E (Singitic) coast — lobster, moray, grouper, octopus, amberjack; clearer but meltemi/N-swell exposed, dawn best. Shore.
Google MapsDouble wall reef 3–45 m (1st 6–18 m, 2nd 22–45 m) on the W coast near Kalogria — lobster, moray, grouper & amberjack; one of the best shore dives on the finger. Shore.
Google MapsDouble-bay reef 10–30 m; the adjacent Nemesis wall drops 15→80 m (39.9456, 23.9874) — SE tip, clear blue. Shore (Kalamitsi)/boat (Nemesis).
Google MapsSteep reef/wall 2–60/65 m, an islet ~5 km SSE of N.Marmaras — Toroneos (W) meltemi-sheltered; coral, moray, octopus, grouper on the wall. Boat.
Google MapsGreece's deepest natural harbour + outer capes/caves; wall 20→50–120 m on the seaward side, shallow inside — big snappers & grouper below 20 m; the all-weather bolt-hole (fully enclosed). Boat/shore.
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.
Cameras, map and reference — to hand as you come up.
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».
National minimum sizes + a 150 g floor (in the table below); grouper 1/day. Spearfishing is closed all May (ΠΔ 373/1985).
Rules change, and the local Λιμεναρχείο (port authority) may impose local restrictions. Before heading out, check the current rules and the declared archaeological zones (ENALIA).
Spearfishing in Sithonia starts with choosing the side of the peninsula. The west coast on Toroneos, with Kelyfos and Porto Koufo, is the meltemi-sheltered side; the east coast around Sarti, Kalamitsi and Armenistis faces open Singitic water and Athos, so it is clearer but more exposed to N/NE wind and Aegean swell. Porto Koufo is the enclosed refuge. Greek national law then sets the boundary: May is unavailable, the licence system has issued no new spearfishing permits since 2014, the method is freediving, and the daily bag is 5 kg.
The Sithonia registry entries describe terrain and exposure, not safety ratings. North wind points you west toward Toroneos and Porto Koufo. The eastern coast is often clearer, but it takes N/NE meltemi and Aegean swell, with dawn and lee windows in the local notes.
| Spot | Type | Depth | Level | Access | Notes |
|---|---|---|---|---|---|
| Porto Koufo Wall | Natural harbour with outer capes and caves | Shallow inside, steep wall outside | - | Boat or shore | Listed as Greece's deepest natural harbour and a fully enclosed lee. The description mentions big snappers and grouper outside. |
| Kelyfos (Turtle island) | Islet with steep reef and wall | Steep change from shallow to deep water | - | Boat | A Toroneos islet sheltered in the west-side meltemi pattern. The source lists coral, moray, octopus and grouper. |
| Armenistis | Eastern reef with an underwater tunnel | Deep reef with tunnel and separate spots | - | Shore | Clearer but exposed to meltemi and north swell. The local notes says dawn is better. |
The Sithonia facts do not include a live visibility feed. They place the clearest water on the east side toward Singitic Gulf and Athos, while the west coast is the meltemi shelter. The Neos Marmaras camera helps with surface water only.
The Sithonia profile names grouper, dentex, amberjack and lobster; spot descriptions also mention octopus, moray and snappers. Legal sizes include gilthead 20 cm, seabass 25 cm, white seabream 23 cm, grouper 45 cm and octopus 750 g. Dentex and amberjack use the general 150 g minimum. Grouper is capped at 1/day.
For Sithonia, the local notes gives June to October. The practical choice is wind side: north pushes you west toward Toroneos, while a calm dawn can make the east coast clearer. May sits before that window and is legally closed for spearfishing throughout Greece.
For Sithonia, do the paperwork check at national level. The old licence is not required, and after 2014 Greece stopped issuing new spearfishing licences. The free ΟΣΠΑ recreational-fisher registry is being rolled out until 31.12.2026, so check gov.gr. In the water, the rule is breath-hold only; scuba or any air-supply apparatus is banned even aboard. Daily catch is limited to 5 kg, or one heavier trophy, and grouper in the Epinephelus group is limited to 1/day.
West-side names include Porto Koufo Wall, Kelyfos, Bahia Beach Reef and Akti Kalogrias. East-side names include Armenistis and Kalamitsi / Nemesis Wall, but that side is more exposed to meltemi and north swell.
No old licence is required for Sithonia. Greece stopped issuing new spearfishing licences after 2014, but gov.gr should still be checked for the ΟΣΠΑ recreational-fisher registry.
Yes. The Halkidiki season cannot use May, because ΠΔ 373/1985 closes spearfishing in Greece for that entire month every year.
Count 5 kg/day as the Greek limit. One larger trophy can be retained instead, and Epinephelus grouper has a separate ceiling of 1 fish per day.
No. Sithonia spearfishing must be done on breath-hold; scuba or other air supply is not allowed for the hunt or as gear kept aboard.
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transparency ~22 m · satellite, yesterdaysatellite estimate · may differ right at the shore