FQDL70 DWHA 201100

 

weather and sea bulletin for north- and baltic sea

issued by marine weather service hamburg

20.08.2026, 1100 UTC:



general synoptic situation:

A low 997 north of Gotland moves towards the Gulf of Finland, 

where it will dissipate by Friday morning. Another low over 

England moves toward the Oslo Fjord. A high 1028 south of the 

Irminger Sea remains almost stationary. A broad ridge extending 

the northern part of the Norwegian Sea slightly shifts 

southwards.





Forecast Thursday:

German Bight:

wind: southwesterly winds 3 to 4, southern part locally 5, 

northwestern part shifting northwest.

visibility/weather: thunderstorms with poor visibility.

sea: 1 meter.

Southwestern North Sea:

wind: southwesterly winds about 4, thames locally 6, shifting 

northwest to north.

visibility/weather: thunderstorms with poor visibility.

sea: at times 1,5 meter.

Fischer:

wind: west to northwest about 3, later about 4, southern part for

a time light and variable winds.

visibility/weather: southern part locally thunderstorms with poor

visibility.

sea: 1 meter.

Skagerrak:

wind: southwest 4 to 5.

visibility/weather: southern part locally thunderstorms with poor

visibility.

sea: later 1,5 meter.

Kattegat:

wind: southwesterly winds about 4.

visibility/weather: at times thunderstorms with poor visibility.

sea: southern part first 1,5 meter.

Belts and Sound:

wind: southwesterly winds about 4.

visibility/weather: at times thunderstorms with poor visibility.

sea: first 1 meter.

Western Baltic:

wind: southwesterly winds about 3, increasing 4 to 5.

visibility/weather: at times thunderstorms with poor visibility.

sea: 1 meter.

Southern Baltic:

wind: southwesterly winds 4 to 5, southern part for a time light 

and variable winds.

visibility/weather: at times thunderstorms with poor visibility.

sea: 1,5 meter.

Southeastern Baltic:

wind: west to southwest about 5, decreasing 3 to 4, shifting 

south later.

visibility/weather: locally thunderstorms with poor visibility.

sea: 1,5 meter.



Forecast Friday:

German Bight:

wind: southeastern part first southwest 4 to 5, otherwise 

northwest about 4.

visibility/weather: locally thunderstorms with poor visibility.

sea: northwestern part later 2 meter.

Southwestern North Sea:

wind: northwest to north about 4, locally 6.

visibility/weather: thunderstorms with poor visibility.

sea: humber 2 meter.

Fischer:

wind: northwest 4, increasing 5 to 6, northeastern part locally 

7.

visibility/weather: shower with moderate visibility.

sea: increasing 2,5 meter.

Skagerrak:

wind: southwest to west 4 to 5, western part increasing 6, 

northern part shifting northwest.

visibility/weather: southern part first thunderstorms with poor 

visibility.

sea: western part increasing 2,5 meter.

Kattegat:

wind: west to southwest 3 to 4, increasing about 5.

visibility/weather: first thunderstorms with poor visibility.

sea: later 1,5 meter.

Belts and Sound:

wind: southwest to west 3 to 4.

visibility/weather: locally thunderstorms with poor visibility.

sea: 0,5 meter.

Western Baltic:

wind: southwest 4 to 5, shifting northwest, for a time decreasing

3.

visibility/weather: locally thunderstorms with poor visibility.

sea: 1 meter.

Southern Baltic:

wind: southwesterly winds about 4, light and variable winds 

later.

visibility/weather: at times thunderstorms with poor visibility.

sea: 1 meter.

Southeastern Baltic:

wind: south to southwest 3 to 4, locally 5, light and variable 

winds later.

visibility/weather: locally thunderstorms with poor visibility.

sea: 1 meter.