Latest wave and weather information
Suomenlinna (wave buoy)
27.12.2025, 17:30-18:00
Significant wave height 0.4 m
Highest individual wave ~0.8 m
Waves from northwest (300°)
Wavelength 6 m
Wave period 2.0 s
Water temperature 4.9 °C
Look at the present wave conditions.
Information by SMS: send BUOY SUOMENLINNA to 16161 (0,85€/message).
Helsinki open sea (wave buoy)
27.12.2025, 18:00-18:30
Significant wave height 1.7 m
Highest individual wave ~3.4 m
Waves from southwest (241°)
Wavelength 61 m
Wave period 6.2 s
Water temperature 5.5 °C
Harmaja (weather station)
27.12.2025, 18:40-18:50
Wind speed 13.1 m/s
Gust 15.9 m/s
Wind from northwest (318°)
Air temperature 2.6 °C
Visibility 20.0 km
See also the Finnish Meteorological Institute's forecast
Kruunuvuorenselkä (weather station)
27.12.2025, 18:40-18:50
Wind speed 10.7 m/s
Gust 14.3 m/s
Wind from northwest (332°)
Air temperature 2.2 °C
Water temperature 3.8 °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.
