Latest wave and weather information
Suomenlinna (wave buoy)
07.12.2025, 14:00-14:30
Significant wave height 0.5 m
Highest individual wave ~1.0 m
Waves from south (169°)
Wavelength 23 m
Wave period 3.9 s
Water temperature 5.8 °C
Look at the present wave conditions.
Information by SMS: send BUOY SUOMENLINNA to 16161 (0,85€/message).
Helsinki open sea (wave buoy)
07.12.2025, 14:00-14:30
Significant wave height 0.7 m
Highest individual wave ~1.4 m
Waves from southeast (131°)
Wavelength 19 m
Wave period 3.5 s
Water temperature 7.2 °C
Harmaja (weather station)
07.12.2025, 15:00-15:10
Wind speed 6.9 m/s
Gust 7.8 m/s
Wind from southeast (134°)
Air temperature 3.7 °C
Visibility 17.1 km
See also the Finnish Meteorological Institute's forecast
Kruunuvuorenselkä (weather station)
07.12.2025, 15:00-15:10
Wind speed 4.3 m/s
Gust 5.7 m/s
Wind from southeast (150°)
Air temperature 3.5 °C
Water temperature 4.3 °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.
