Latest wave and weather information
Suomenlinna (wave buoy)
09.08.2025, 04:00-04:30
Significant wave height 0.2 m
Highest individual wave ~0.4 m
Waves from southwest (204°)
Wavelength 14 m
Wave period 3.0 s
Water temperature 19.9 °C
Look at the present wave conditions.
Information by SMS: send BUOY SUOMENLINNA to 16161 (0,85€/message).
Helsinki open sea (wave buoy)
09.08.2025, 04:00-04:30
Significant wave height 0.4 m
Highest individual wave ~0.8 m
Waves from southwest (242°)
Wavelength 17 m
Wave period 3.3 s
Water temperature 19.2 °C
Harmaja (weather station)
09.08.2025, 04:50-05:00
Wind speed 2.3 m/s
Gust 2.8 m/s
Wind from south (177°)
Air temperature 16.4 °C
Visibility 16.2 km
See also the Finnish Meteorological Institute's forecast
Kruunuvuorenselkä (weather station)
09.08.2025, 04:50-05:00
Wind speed 2.5 m/s
Gust 3.6 m/s
Wind from southwest (221°)
Air temperature 17.3 °C
Water temperature 20.7 °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.
