The UK's east coast faces the shallow, productive North Sea. This is cod country in winter and an increasingly important bass fishery in summer as waters warm. From Norfolk's beaches through Suffolk's estuaries to the Yorkshire coast and Northumberland, strong seasonal temperature swings drive a clear species rotation. The North Sea is shallow (average 308 feet) and well-mixed, creating high productivity visible on chlorophyll imagery.
Species and Seasons
Cod: THE winter species. November through February from shore and boats. Large fish move inshore to spawn as water cools below 50°F. Wrecks and rough ground hold fish year-round but the winter shore run is the main event. Yorkshire, Norfolk, and Northumberland beaches are prime.
European sea bass: Growing fishery as North Sea waters warm. Best June through October. Estuaries, harbours, and sandy beaches. Water needs to reach 57°F+ for consistent action. Essex and Suffolk estuaries are productive.
Thornback ray: March through June on sandy and mixed ground. Crab peel bait is essential during spring when rays come inshore. Norfolk and Suffolk coast.
Smooth-hound: May through September. Pack hunters on shallow sandy ground. One of the best light-tackle sport fish in UK waters. Essex and Thames Estuary.
Tope: Summer shark species from boats. June through September. Strong fighters on light gear.
Dover sole, dab, whiting: Year-round bottom species. Sole peak in warmer months on sandy ground. Whiting abundant in autumn and winter.
Why SST and Chlorophyll Matter
The North Sea's shallow depth means temperatures swing dramatically with the seasons: from 41°F in February to 63°F in August. These swings drive every species migration. Cod move inshore when water cools. Bass arrive when it warms. Ray and smooth-hound follow spring warming patterns.
Chlorophyll is consistently high in the North Sea due to tidal mixing and river nutrient inputs. Productivity patterns show where bait is concentrating. Temperature fronts between well-mixed coastal water and stratified offshore water create boundaries visible on SST that attract predators.
Calendar
Nov-Feb: Cod season. Shore fishing peak. Whiting. 41-48°F. Mar-May: Thornback ray. Smooth-hound starting. Bass arriving (May). 46-55°F. Jun-Sep: Bass peak. Smooth-hound. Tope. Sole. Mackerel. 57-63°F. Oct: Transition. Late bass, early cod. 55-50°F.
Fishing nearby waters too? UK English Channel and UK Scotland / Shetland are the closest covered regions. See pricing for what a plan covering UK East Coast / North Sea costs.