Skip to content
Surfhog home
Menu

Nymindegab wave buoy observations on Wed, Apr 21, 2021

Hourly readings from the Nymindegab wave buoy for Wed, Apr 21, 2021, including available wave height, period, direction, wind and sea temperature data.

Last observation shown

Oldest observation available

Daily means for

Latest

Period Summary

Programmatically generated summary. Hog Says

48 wave-buoy observations were recorded during the day. Typical wave height was 7 ft (10th–90th percentile 1.8–11.5 ft), while mean average wave period was 5.3 seconds (10th–90th percentile 3.3–7.3 seconds). All 143 checked values passed quality control.

Generated only from the observations and comparisons shown on this page.

Line chart showing wave height, wave period and sea temperature for Nymindegab. Use the detailed observations table below for the same data in text form.

About Nymindegab wave buoy

Nymindegab is a Danish Coastal Authority directional buoy in the North Sea off the southern part of Jutland's exposed west coast. The station supports long-term understanding and management of the sandy barrier coast around the southern end of Ringkøbing Fjord and the Lodbjerg–Nymindegab protection area.

Its current data source reports wave height, wave period and wave direction.

Metrics are rows; hours run left to right. Times use your device time zone.
Nymindegab wave buoy hourly observations Wed, Apr 21, 2021Last observation shown
Metric
Significant wave height (ft)1112222222233344555566677878898910101011111111121111121112121111
Average wave height (ft)------------------------------------------------
Maximum wave height (ft)223234334444567799999101114111212151415171416171717212020232017212040221920
Average period (s)544333333333444445555555565656666666777777887789
Zero-crossing period (s)443333333333334444445-55555555555666666666677766
Maximum wave period (s)------------------------------------------------
Peak wave directionNWNWNWNWNWNWWNWNWNWNWNWNWNWNWNWNWNWNWNWNWNW-NWNWNWNWNWNWNWNWNWNWNWNWNWNWNWNWNWNWNWNWNWNWNWNWNWNW

Swipe sideways to see more hours.

Wave metric colour key

Colours move through the scale as each number increases. They do not by themselves mean that conditions are good, safe or suitable for you.

Wave & swell height0–40+ ft
Wave & swell period0–22+ s
Wind speed0–75 mph

The displayed numbers remain the source of truth; colour is an additional visual cue.

What does buoy wave power mean?

kW/m means kilowatts of wave power per metre of wave crest. It describes the rate at which the observed sea state carries energy past the buoy.

Unlike the shore-directed forecast value, buoy wave power is the total power at the observation point. It is not projected towards a particular beach and does not predict breaking wave height.

In deep water, wave power can be calculated with:

P is approximately 0.49 times significant wave height squared times wave energy period.

P is power in kW/m, Hs is significant wave height in metres, and Te is wave energy period in seconds.

  • Provider-reported power is used when available.
  • Otherwise, a value is calculated only when both significant height and a genuine energy period are available. The ≈ symbol marks calculated values.
  • A dash is shown instead of substituting peak, Tm02, zero-crossing or other period measurements.
  • Daily and monthly figures use the mean of hourly-normalized observation power values; they are not calculated from mean height and period.

Wave direction, spectrum, water depth and local bathymetry still matter. Wave power is best read alongside height, period and direction rather than as a standalone surf-quality score.

The observation data displayed on this page is from the Danish Coastal Authority wave-measurement network.

Learn how SurfHog combines, checks and summarizes observations in the data and methodology notes.

› Wave Buoy List