Users can select a location (point) on the map to access forecasts of significant wave height, wave direction, and wave period, in addition to weather forecasts and tidal predictions. Please note that all information presented here is forecast data.

When viewing data from a specific wave buoy, both observed measurements and forecast data are displayed. It is essential to clearly distinguish between these datasets. The information can be presented both graphically and in tabular format.

Two wave parameters are provided: significant wave height (Hs) in metres and mean wave period (Tm) in seconds. Wave height is measured vertically from the trough to the crest of the following wave.

The reported wave height is the significant wave height (Hs), defined as the average height of the highest one-third of all waves. The maximum individual wave in a set of 200 waves may be up to approximately 63% higher than the significant wave height.

The mean wave period (Tm) represents the average time interval between successive waves. The wavelength (distance between wave crests) can be approximated as 1.56 times the square of the wave period.

Example:
Significant wave height: 2.7 m
Mean wave period: 7.9 s
Wavelength = 1.56 × 7.9² = 97.4 m

Two wave parameters are provided: significant wave height (Hs) in metres and peak wave period (Tp) in seconds. Wave height is measured vertically from the trough to the crest of the following wave.

The reported wave height is the significant wave height (Hs), defined as the average height of the highest one-third of all waves. The maximum individual wave in a set of 200 waves may be up to approximately 63% higher than the significant wave height.

The peak wave period (Tp) represents the period associated with the most energetic waves at a given time. This parameter provides a more accurate representation of actual sea conditions and is generally considered to have greater practical value, particularly when assessing sea state and its impact on navigation and coastal or offshore structures.

The mean wave period (Tm) may, to some extent, mask events where individual waves are unusually long or energetic, as it averages out variability. The peak wave period therefore provides a clearer indication of the waves that have the greatest influence at any given time.

The wavelength (distance between wave crests) can be approximated as:

Wavelength ≈ 1.56 × Tp²