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Latest wave and weather information

Suomenlinna (wave buoy)


21.04.2025, 18:30-19:00
Significant wave height 0.1 m
Highest individual wave ~0.2 m
Waves from south (169°)
Wavelength 85 m
Wave period 7.7 s
Water temperature 4.8 °C

Plots: 2+2 days     14 days    

Data 14 days (csv)

Look at the present wave conditions.

Information by SMS: send BUOY SUOMENLINNA to 16161 (0,85€/message).

Helsinki open sea (wave buoy)


21.04.2025, 18:30-19:00
Significant wave height 0.4 m
Highest individual wave ~0.8 m
Waves from east (90°)
Wavelength 25 m
Wave period 4.0 s
Water temperature 3.8 °C

Plots: 2+2 days     14 days    

Data 14 days (csv)

Harmaja (weather station)


21.04.2025, 19:20-19:30
Wind speed 3.3 m/s
Gust 4.2 m/s
Wind from north (21°)
Air temperature 5.8 °C
Visibility 9.4 km

Plots: 2 days     14 days    

Data 14 days (csv)

See also the Finnish Meteorological Institute's forecast

Kruunuvuorenselkä (weather station)


21.04.2025, 19:20-19:30
Wind speed 3.3 m/s
Gust 4.8 m/s
Wind from northeast (57°)
Air temperature 6.8 °C
Water temperature 5.3 °C

Plots: 2 days     14 days    

Data 14 days (csv)

Kruunuvuorenselkä (water temperature)


21.04.2025, 19:20-19:30
Water temperature (-1.1m) 5.3 °C
Water temperature (-2.8m) 5.2 °C
Water temperature (-5.3m) 4.3 °C
Water temperature (-7.3m) 4.5 °C
Water temperature (-9.6m) 4.1 °C

Plots: 2 days     14 days     12 months

Data 14 days (csv)