Latest wave and weather information
Suomenlinna (wave buoy)
09.10.2025, 14:30-15:00
Significant wave height 0.4 m
Highest individual wave ~0.8 m
Waves from south (199°)
Wavelength 18 m
Wave period 3.4 s
Water temperature 12.3 °C
Look at the present wave conditions.
Information by SMS: send BUOY SUOMENLINNA to 16161 (0,85€/message).
Helsinki open sea (wave buoy)
09.10.2025, 14:30-15:00
Significant wave height 0.7 m
Highest individual wave ~1.4 m
Waves from southwest (247°)
Wavelength 23 m
Wave period 3.9 s
Water temperature 13.3 °C
Harmaja (weather station)
09.10.2025, 15:30-15:40
Wind speed 6.9 m/s
Gust 7.9 m/s
Wind from southwest (210°)
Air temperature 13.0 °C
Visibility 20.0 km
See also the Finnish Meteorological Institute's forecast
Kruunuvuorenselkä (weather station)
09.10.2025, 15:30-15:40
Wind speed 6.1 m/s
Gust 7.3 m/s
Wind from southwest (222°)
Air temperature 12.4 °C
Water temperature 11.3 °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.
