Water levels and weather

Below you will find up-to-date information about the weather and currents in the Gothenburg port area.

Water levels
Tide variations in the Kattegatt Strait and thus in Gothenburg are small. There is only a 20 cm difference between the highest high water (HHW) and the lowest low water (LLW). However, the variations in water levels in Gothenburg and the fairways outside can vary considerably due to other factors, such as atmospheric pressure and winds.

Atmospheric pressure and seawater level
The higher the atmospheric pressure at the location, the lower the water level. A rule of thumb is that an increase in atmospheric pressure of 1 millibar (hPa) lowers the water level by 1 cm. The lower the atmospheric pressure, the higher the water level. 

Winds and sea levels
Strong winds blowing from the south-west to the west and north-west raise the water level along the west coast and at the port, resulting in high water conditions. Easterly winds cause the water level to fall, resulting in low water conditions.

 

The greatest variations in water levels arise when the moon, atmospheric pressure and winds interact. When this happens, the difference between the highest water level and the lowest water level can be around 280 cm in Gothenburg although this is highly unusual.

Typical water levels in cm at the Tor Harbour in Gothenburg in relation to the mean water level (MW) in Gothenburg

 

Observed rel. MW

RH100

RH70 

 GH88 (m)

Year 

HHW 

 169

149 

 158

 11.65

1914

MHW

 92

 72

 81

 10.88

 

MW

 0

-20 

 -11

 9.96

 

MLW 

 -60

 -80

-71 

 9.36

 

LLW 

 -111

 -131

 -122

 8.85

1976 

DW 

 280

 280

 280,00

 2.80

 

The average values refer to 2013.
Land rise coefficient: 0.18 cm/year 

HHW = Highest high water level
MHW = Medium high water level (average highest water level over the years)
MW = Mean water level (= 0)
MLW = Medium low water level (average lowest water level over the years)
LLW = Lowest low water level
DW = Difference between the highest and lowest water level


Up-to-date forecasts
For up-to-date water levels and weather data, reference can be made to the Swedish Maritime Administration web service. Click here to access the service.

Click here for a weather forecast for the Port of Gothenburg.

Click here for a weather forecast for the entrance to the Port of Gothenburg.

Click here for a weather forecast for the Trubaduren lighthouse.

Click here for information regarding sea currents.