Latest wave and weather information
Suomenlinna (wave buoy)
09.05.2025, 19:30-20:00
Significant wave height 0.1 m
Highest individual wave ~0.2 m
Waves from south (179°)
Wavelength 71 m
Wave period 6.9 s
Water temperature 5.9 °C
Look at the present wave conditions.
Information by SMS: send BUOY SUOMENLINNA to 16161 (0,85€/message).
Helsinki open sea (wave buoy)
09.05.2025, 19:30-20:00
Significant wave height 0.2 m
Highest individual wave ~0.4 m
Waves from southwest (241°)
Wavelength 28 m
Wave period 4.3 s
Water temperature 5.4 °C
Harmaja (weather station)
09.05.2025, 20:20-20:30
Wind speed 4.5 m/s
Gust 4.9 m/s
Wind from west (248°)
Air temperature 6.4 °C
Visibility 50.0 km
See also the Finnish Meteorological Institute's forecast
Kruunuvuorenselkä (weather station)
09.05.2025, 20:20-20:30
Wind speed 3.8 m/s
Gust 4.8 m/s
Wind from west (255°)
Air temperature 6.9 °C
Water temperature 5.8 °C
Longer data time series from the wave buoys and Harmaja weather station
are available from the Finnish Meteorological Institute's Open data service by
download or
machine-readable WFS interface.