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Ría de Treto

Castro-Urdiales · Cantabria Cantabrian Sea

River/stream mouth

Protected area notice

This spot is inside or next to a protected area. The boundary alone does not mean fishing is banned; the rules of that zone decide.

Close to a protected area: Marismas de Santoña, Victoria y Joyel (Parque Natural) – 0 m, Marismas de Santoña, Victoria y Joyel (Zona de la Red Ecológica Europea Natura 2000) – 0 m, Marismas de Santoña, Victoria, Joyel y Ría de Ajo (Zona de la Red Ecológica Europea Natura 2000) – 0 m. Check the site’s current zoning, its designation act and the fisheries regulation.

Satellite image of the area around Ría de Treto
Satellite image Powered by Esri · Imagery © Esri, Maxar, Earthstar Geographics, and the GIS User Community

A ground profile built from catalogue and map data.

Not checked on site

Species in the catalogue

20

Top species here in November

A 0–100 score from season, water temperature, habitat and local records; a general trend, not a guarantee.

Sorted by the November score

Local evidence: OBIS/GBIF observation records (at this spot or nearby), regional literature and local angling sources.

The species list is not a guarantee of a catch.

Catalogue months

12 / 12 months

The source lists every month. Results depend on the species, the weather and the sea.

  • January
  • February
  • March
  • April
  • May
  • June
  • July
  • August
  • September
  • October
  • November
  • December

Techniques for this shoreline · 6

Matched to the shoreline type. Which technique works on a given day is decided by the target species, the season and the state of the sea.

  • Bolognese · Trotting in current

    Controlled float trotting with a long telescopic rod

    Tackle recipes
  • Bottom Fishing · Classic bottom rig

    Holding a weighted natural-bait rig on the bottom

    Tackle recipes
  • Float Fishing · Float fishing

    Presenting the bait at a set water layer

    Tackle recipes
  • Spin · Spinning

    Cast-and-retrieve fishing with plugs, spoons and soft plastics

    Tackle recipes
  • Surf Casting · Long-range bottom fishing

    Long-range bottom fishing with natural bait on sandy/mixed shores

    Tackle recipes
  • Saltwater Fly · Shore fly fishing

    Surface and shallow-water fishing with artificial flies/streamers

    Tackle recipes

Water clarity

Month-by-month turbidity of the coastal water, from satellite measurements.

Today (estimate)

Slightly coloured · visibility ≈ 4.4 m

Seasonal normal (November): Slightly coloured — Seasonal normal today.

  • Waves over the last two days may have stirred up the bottom.

In the surf zone (first 1–2 m) the water may be murkier than shown.

Confidence: High

Month by month

  1. J
  2. F
  3. M
  4. A
  5. M
  6. J
  7. J
  8. A
  9. S
  10. O
  11. N
  12. D

Satellite measurement. The satellite sees about 200 m offshore; the surf zone within casting distance is usually murkier. Today’s estimate is adjusted for weather and sea when the spot forecast is opened; it is not certain.

Source: Copernicus Marine coastal ocean colour (2023–2026) and Open-Meteo.

Which bait here this month

Water today is probably slightly coloured. Waves are stirring the shoreline; baits are chosen for moderately coloured water

  • European seabass Natural first, lures also work

    First: Shrimp

    Also: Cuttlefish, Squid, Sinking minnow, Hard minnow

  • White seabream Natural bait

    First: Shrimp

    Also: Cuttlefish, Squid, Mussel, LRF micro soft plastic

  • Gilthead seabream Natural bait

    First: Shrimp

    Also: Crab, Mussel, Sardine, LRF micro soft plastic

  • European flounder Natural bait

    First: Ragworm

    Also: Shrimp, Horse mackerel, LRF micro soft plastic, Scented soft plastic

Species the research highlights at this spot this month; the water may differ on the day.

Water climate

Surface water temperature and dissolved oxygen, month by month.

Surface water (°C)

  1. 13 J
  2. 12.5 F
  3. 12.6 M
  4. 13.4 A
  5. 15.2 M
  6. 18 J
  7. 20.5 J
  8. 21.7 A
  9. 20.4 S
  10. 18.2 O
  11. 15.8 N
  12. 14.1 D

Oxygen (mg/L)

  1. 8.3
  2. 8.5
  3. 8.6
  4. 8.6
  5. 8.6
  6. 8.5
  7. 8.3
  8. 8.1
  9. 8.2
  10. 8.2
  11. 8
  12. 8.1

Lowest oxygen at the bottom 8 mg/L (model bottom 5.1 m).

Temperature: NOAA OISST 1991–2020 satellite mean (nearest 0.25° cell to the spot). Oxygen: Copernicus 2015–2024 monthly mean.

Other grounds nearby

All fishing grounds in Cantabria

Data quality

Data set
Cantabrian Sea
Field check
No

Map data does not confirm a right of way. Not to be used for navigation. Before you fish, check local rules, permits and the signage on site.

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Ría de Treto · Castro-Urdiales · Cantabria

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