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34,009-acre Onsala kustvatten. North Sweden coastal fishing map with an exact official national water-body boundary, EMODnet 2024 CDI-audited mixed survey/composite DTM contours, source-assessed fishing spots, official regional fish evidence, seasonal forage guidance, public-access review and current-rule links. Official SMHI SVAR 2022 named coastal water in West Coast and Kattegat. This child is clipped to the exact source polygon and a trip-scale ownership window. Coverage classes and uncertainty limits are disclosed; this is a fishing-planning chart, not a navigation chart or catch forecast. The water tops out around 62 m. The depth chart comes from EMODnet, with national hydrographic source-reference audit bathymetric survey data, so the contours are survey-derived rather than computer-modeled. The rest of this page walks each species through its year, using the map's own scoring.
Onsala kustvatten - North mäter 13 755 hektar bakom 109.4 km strandlinje, uppbruten av 210 öar. Strandlinjen är kraftigt flikig (index 2.6) — vikar och uddar överallt, vilket mångdubblar den fiskbara kanten. Cirka 4% av vattnet är ~5 m eller grundare, zonen där näringskedjan bor. Från ände till ände mäter vattnet ungefär 16.3 km, som bredast 15.4 km. Närmaste kartlagda vatten är Göteborgs skärgårds S kustvatten, 12.9 km åt nordväst.
Gratis interaktiv fiskekarta — Onsala kustvatten — North, Sverige: källgranskade kustdjupkurvor (99 % direktmätt) ner till 62 m (202 fot), och de bästa fiskeplatserna för havsöring, sill och strömming, makrill med flera. Djupkartan är modellberäknad från sjöns verkliga strandlinje och största djup — använd den som vägledning, aldrig för navigation.
Occurrence evidence does not promise a catch or establish that retention is legal. Current seasons, closures, protected species, gear rules and local restrictions always control. The roster may combine exact-water monitoring with habitat-filtered official regional evidence; it does not imply that every species is equally abundant throughout the mapped section.
| Species | Evidence basis | Count / date |
|---|---|---|
| (Sea Trout) | official species listing | — |
| (Atlantic Herring) | official species listing | — |
| (Atlantic Mackerel) | official species listing | — |
| (Garfish) | official species listing | — |
| (European Flounder) | official species listing | — |
| (European Plaice) | official species listing | — |
| (Saithe (Coalfish)) | official species listing | — |
| (Atlantic Cod) | official species listing | — |
Official species-evidence source.
When the water first warms, sea trout slide up into 1 to 6 m. Summer is a 4.5 to 15 m game here, winter a 1.5 to 9 m one. Start at Rock reef. It's a rock pile holding about 1 m of water and rates prime come spring. The feeding windows run early morning and the evening. Keep a deep-running wobbler or a trolled spoon rigged through the warm months.
| Säsong | Djup | Bästa tid | Börja vid | Beten |
|---|---|---|---|---|
| Vår | 1 to 6 m | dawn & dusk | Rock reef (1 m) | Slim coastal spoon, Shallow-running wobbler |
| Sommar | 4.5 to 15 m | dawn & dusk | Sharp break (7.5 m) | Deep-running wobbler, Trolled spoon |
| Höst | 1 to 7.5 m | dawn & dusk | Shoreline point (3 m) | Coastal wobbler, Casting spoon |
| Vinter | 1.5 to 9 m | midday | Rock reef (2 m) | Slow coastal spoon, Suspending wobbler |
When the water first warms, atlantic herring slide up into 1.5 to 7.5 m. By summer they slide out to 4.5 to 15 m, and by winter most fish are in 6 to 18 m. If you only fish one area, make it Sharp break: a drop-off around 7.5 m that scores good in summer. In summer the feeding windows fall in early morning and the evening. Keep a herring feather rig or a small silver jig rigged through the warm months.
| Säsong | Djup | Bästa tid | Börja vid | Beten |
|---|---|---|---|---|
| Vår | 1.5 to 7.5 m | dawn & dusk | Rock reef (2 m) | Small herring feather rig, Micro jig rig |
| Sommar | 4.5 to 15 m | dawn & dusk | Sharp break (7.5 m) | Herring feather rig, Small silver jig |
| Höst | 3 to 12 m | dawn & dusk | Sharp break (7.5 m) | Small feather rig, Compact silver spoon |
| Vinter | 6 to 18 m | midday | Sharp break (7.5 m) | Small silver jig, Sparse feather rig |
The spring pattern is a shallow one: atlantic mackerel in 1.5 to 14 m. As the season builds they drop to 4.5 to 24 m, wintering in 9 to 37 m. Top water on the chart: Sharp break, a drop-off in the 7.5 m range, good in summer. Time it for early morning and the evening. Summer baits: a feather rig or a small vertical jig gets it done.
| Säsong | Djup | Bästa tid | Börja vid | Beten |
|---|---|---|---|---|
| Vår | 1.5 to 14 m | dawn & dusk | Shoreline point (3 m) | Mackerel feather rig, Small silver jig |
| Sommar | 4.5 to 24 m | dawn & dusk | Sharp break (7.5 m) | Feather rig, Small vertical jig |
| Höst | 3 to 20 m | dawn & dusk | Sharp break (7.5 m) | Compact silver jig, Sparse feather rig |
| Vinter | 9 to 37 m | midday | Sharp break (10 m) | Small deep jig |
When the water first warms, garfish slide up into 0.5 to 4.5 m. Summer is a 0.5 to 6 m game here, winter a 6 to 18 m one. Start at Shoreline point. It's a point holding about 3 m of water and rates prime come spring. The feeding windows run early morning and the evening. Keep a slim casting spoon or a surface-skipping fly rigged through the warm months.
| Säsong | Djup | Bästa tid | Börja vid | Beten |
|---|---|---|---|---|
| Vår | 0.5 to 4.5 m | dawn & midday | Shoreline point (3 m) | Slim silver spoon, Small inline spinner |
| Sommar | 0.5 to 6 m | dawn & dusk | Shoreline point (3 m) | Slim casting spoon, Surface-skipping fly |
| Höst | 2.5 to 9 m | dawn & dusk | Sharp break (7.5 m) | Weighted slim spoon, Small silver jig |
| Vinter | 6 to 18 m | midday | Sharp break (7.5 m) |
The spring pattern is a shallow one: european flounder in 1.5 to 7.5 m. As the season builds they drop to 2 to 11 m, wintering in 4.5 to 15 m. Top water on the chart: Sharp break, a drop-off in the 7.5 m range, prime in fall. Time it for early morning and the evening. Summer baits: a bottom jig with spinner blade gets it done.
| Säsong | Djup | Bästa tid | Börja vid | Beten |
|---|---|---|---|---|
| Vår | 1.5 to 7.5 m | dusk | Sharp break (7.5 m) | Small bucktail dragged on bottom |
| Sommar | 2 to 11 m | dawn & dusk | Sharp break (7.5 m) | Bottom jig with spinner blade |
| Höst | 2.5 to 12 m | dusk | Sharp break (7.5 m) | Compact bottom jig |
| Vinter | 4.5 to 15 m | midday | Sharp break (7.5 m) | Small bottom jig |
Early season european plaice use the shallows, holding in 2.5 to 11 m. Expect a summer slide to 2 to 12 m, then a winter hold in 7.5 to 24 m. Put Feeding flat first on the milk run — a feeding flat near 13 m that grades good for summer. In summer the feeding windows fall in early morning and the evening. Tie on a light spooned bottom rig or a beaded trace and you're in the game.
| Säsong | Djup | Bästa tid | Börja vid | Beten |
|---|---|---|---|---|
| Vår | 2.5 to 11 m | dusk | Feeding flat (13 m) | Beaded flowing trace |
| Sommar | 2 to 12 m | dawn & dusk | Feeding flat (13 m) | Light spooned bottom rig, Beaded trace |
| Höst | 3 to 15 m | dusk | Feeding flat (13 m) | Beaded bottom trace |
| Vinter | 7.5 to 24 m | midday | open water |
Onsala kustvatten - North also holds saithe (coalfish) (6 to 62 m in summer), atlantic cod (14 to 55 m in summer). Pick any of them on the map above for rated spots and bait picks.
The chart marks 18 structure features on Onsala kustvatten - North; the deepest is Deepest basin at about 62 m.
Access data: Swedish Agency for Marine and Water Management - Bathing Locations and Waters. Confirm conditions and fees locally before you launch.
Season dates, license requirements, and size and bag limits for Sweden waters are set by the Svenska Fiskeregler (official current Swedish fishing-rules service) — and special regulations can apply to Onsala kustvatten - North specifically, so confirm the current rules before you fish. Check Svenska Fiskeregler and the Swedish Agency for Marine and Water Management immediately before every coastal trip. Area-specific closures, protected spawning areas, minimum and maximum sizes, gear restrictions and species prohibitions can change; recreational fishing for Baltic cod is prohibited during 2026. A mapped depth contour, fishing-spot marker or bathing-site access lead never establishes permission to fish, retain catch, cross private land, park, launch or navigate safely.
Check the official Sweden fishing regulations →
Swedish Agency for Marine and Water Management →
Check special-area and water-specific rules →
Check official shore-access information →
Onsala kustvatten - North is about 202 ft (62 m) deep at its deepest point. The depth chart comes from EMODnet, with national hydrographic source-reference audit bathymetric survey data, so the contours are survey-derived rather than computer-modeled.
Onsala kustvatten - North är som djupast cirka 62 meter (202 fot). Djupen kommer från verkliga lodningar.
Official coastal monitoring from Sweden national fisheries and coastal monitoring agencies informs the sea trout, atlantic herring, atlantic mackerel, garfish, european flounder, european plaice, saithe (coalfish), atlantic cod roster for Onsala kustvatten - North. The mixed roster combines exact-water records where available with habitat-filtered regional evidence; not every species is documented at this exact water, and it is not a promise of equal abundance or a catch on a particular trip.
Rock reef is the top-rated area: a rock pile in about 4 ft of water that rates prime for sea trout in spring. Open the map above to see every rated spot for each species and season.
For sea trout, the summer bite is best in early morning and the evening. Each species page section below lists the seasonal windows, and the map shows a live NOW badge when you're inside one.
Fishing on Onsala kustvatten - North is regulated by the Svenska Fiskeregler (official current Swedish fishing-rules service). Check the official Sweden regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Göteborgs skärgårds S kustvatten 8 mi · Rubbesjö 8 mi · Onsala kustvatten - South 8 mi · Kringlevatten 8 mi · Långevatten 8 mi · Mellsjö 8 mi · Sandsjö 9 mi · Oxsjön 9 mi · Fisjön 10 mi · Råsjö 10 mi · Skårsjön 10 mi · Sisjön 10 mi
See how Onsala kustvatten - North stacks up: best sea trout lakes in Sweden · best atlantic herring lakes in Sweden · best european flounder lakes in Sweden · best garfish lakes in Sweden
Browse all Sweden fishing maps. See every water on DepthScout. Bathymetry credit: EMODnet, with national hydrographic source-reference audit EMODnet Bathymetry DTM 2024 mean-depth grid — CDI-audited mixed survey/composite DTM (Lowest Astronomical Tide (LAT); 99% measured, 1% source-interpolated). How we build these maps. Fish here with a sonar unit that logs? Send us your depth data and we'll improve this chart, credited to you. For fishing guidance only, never navigation.