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Nymindegab wave buoy daily means for Apr 1999

Daily means from the Nymindegab wave buoy for Apr 1999, including available wave height, period, direction, wind and sea temperature data.

Last observation shown

Data available:  to 

Monthly means for

Latest

Period Summary

Programmatically generated summary. Hog Says

241 wave-buoy observations covered all 30 days. Typical wave height was 3.1 ft (10th–90th percentile 0.8–7.2 ft), while mean average of more than one wave period type was 4.4 seconds (10th–90th percentile 3.3–5.7 seconds). All 721 checked values passed quality control.

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

Typical Significant Wave Height

3.1ft
Mean: 3.6 ft
P10–P90: 0.8 — 7.2 ft
Recorded extremes

0.5 — 11 ft

Available for 240 of 241 hourly samples

Mean Observed Wave Period

4.4secs
P10–P90: 3.3 — 5.7secs
Recorded extremes

2.6 — 7.2secs

Typical Observed Wind

-, -mph
Mean: - mph
P10–P90: - — - mph

Available for 0 of 241 hourly samples

Mean Water Temperature

-°C
P10–P90: - — -°C

Available for 0 of 241 hourly samples

Chart showing grouped wave observations for Nymindegab. Use the table on this page for a text version of the same measurements. To open hourly observations, use a linked day name in the table.

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; days run left to right.
Nymindegab wave buoy daily means Apr 1999Last observation shown
Metric
Mean significant wave height (ft)111124754475664537QC rejected33221112354
Mean average wave height (ft)------------------------------
Mean maximum wave height (ft)221146128671281010774121245431123697
Mean average period (s)644544554455554545644443333455
Mean zero-crossing period (s)543444554455554445543343333454
Mean maximum wave period (s)------------------------------
Mean peak wave directionNWconcentration 100%NWconcentration 100%NWconcentration 100%NWconcentration 100%WSWconcentration 50%SWconcentration 99%Wconcentration 95%NWconcentration 100%Wconcentration 98%WSWconcentration 99%WNWconcentration 93%Wconcentration 74%Wconcentration 90%NWconcentration 100%NWconcentration 97%SWconcentration 97%NWconcentration 92%NWconcentration 100%NWconcentration 100%NWconcentration 56%SSEconcentration 73%SWconcentration 90%SWconcentration 99%Variableconcentration 21%NNWconcentration 99%NNEconcentration 79%NNWconcentration 99%NNWconcentration 98%NNWconcentration 100%NWconcentration 94%

Swipe sideways to see more days.

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.

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