Latest wave and weather information
Suomenlinna (wave buoy)
17.09.2025, 03:00-03:30
Significant wave height 1.1 m
Highest individual wave ~2.2 m
Waves from south (178°)
Wavelength 35 m
Wave period 4.8 s
Water temperature 16.6 °C
Look at the present wave conditions.
Information by SMS: send BUOY SUOMENLINNA to 16161 (0,85€/message).
Helsinki open sea (wave buoy)
17.09.2025, 02:30-03:00
Significant wave height 1.3 m
Highest individual wave ~2.6 m
Waves from south (171°)
Wavelength 35 m
Wave period 4.8 s
Water temperature 16.0 °C
Harmaja (weather station)
17.09.2025, 03:50-04:00
Wind speed 11.3 m/s
Gust 13.4 m/s
Wind from south (158°)
Air temperature 14.7 °C
Visibility 20.0 km
See also the Finnish Meteorological Institute's forecast
Kruunuvuorenselkä (weather station)
17.09.2025, 03:50-04:00
Wind speed 9.6 m/s
Gust 11.7 m/s
Wind from south (171°)
Air temperature 14.6 °C
Water temperature 15.7 °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.
