Wave observations

Select observation
station
Significant wave
height
Highest individual
wave (computational)
Wave direction
from
Sea surface
temperature
Recent
observation
Location of the
wave buoy
1. Northern Baltic Proper0.7 m1.3 m57° (NE)15.0 °C20.09 09:0059°15’ N 21°00’ E
2. Gulf of Finland0.4 m0.7 m81° (E)14.1 °C20.09 09:0059°58’ N 25°14’ E
3. Bothnian Sea0.8 m1.4 m350° (N)13.1 °C20.09 09:3061°48’ N 20°14’ E
4. Bay of Bothnia1.5 m2.7 m60° (NE)-20.09 10:00-
5. Helsinki Suomenlinna0.1 m0.2 m98° (E)13.8 °C20.09 09:0060°07’ N 24°58’ E

The significant wave height: observations (blue), wave model forecast (red). When the buoy is not in the sea or observational data are not available for technical reasons, the results calculated by the wave model are shown in both the graph and the table (with magenta in the graph). The arrows show the wave propagation direction.

The reported highest individual waves are not based on direct measurement, but are statistically estimated from the significant wave height.

The Finnish Meteorological Institute (FMI) has four wave buoys in the Baltic Sea. They are located in the Northern Baltic Proper, in the Gulf of Finland, in the Bothnian Sea and in the Bay of Bothnia. FMI also operates a wave buoy that is moored outside of Suomenlinna, althought the buoy is owned by the City of Helsinki.

The buoys are removed before the sea freezes and redeployed in the spring when the ice has melted.

More information: