1. Northern Baltic Proper
Recent observation: 24.4.2014 at 00:30 UTC

Significant wave height: 0.5 m

Highest individual wave: 0.9 m

Sea surface temperature: 4.1 °C
2. Helsinki
Recent observation: 24.4.2014 at 00:30 UTC

Significant wave height: 0.2 m

Highest individual wave: 0.4 m

Sea surface temperature: 3.3 °C
3. Bothnian Sea
Recent observation: 24.4.2014 at 00:30 UTC

Significant wave height: 0.4 m

Highest individual wave: 0.6 m

Sea surface temperature: 2.6 °C
4. Bay of Bothnia
Calculated by wave model: 24.4.2014 at 01:00 UTC

Significant wave height: 0.8 m

Highest individual wave: 1.4 m

Sea surface temperature: - °C

Wave height graph´s colors

  • Blue: observed
  • Red: wave model´s forecast
  • Magenta: calculated by wave model

Finnish Meteorological Institute has four buoys in the Baltic Sea that measure waves in the open sea season. These wave buoys are located in the Northern Baltic Proper, off Helsinki, in the Bothnian Sea and in the Bay of Bothnia.

The buoys are removed before the sea freezes and redeployed in the spring. When the buoy is not at the sea, the results from the wave model are shown.

UTC-time is 2 hours behind Finnish normal time and 3 hours behind Finnish summer time.

In addition to the Baltic Sea Now website, wave height data is accessible by slow internet connections: www.fimr.fi/wave