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Nymindegab wave buoy daily means for Sep 2015

Daily means from the Nymindegab wave buoy for Sep 2015, 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

1,406 wave-buoy observations covered all 30 days. Typical wave height was 3.5 ft (10th–90th percentile 1.3–7.2 ft), while mean average of more than one wave period type was 4.4 seconds (10th–90th percentile 3.2–5.5 seconds). All 4,199 checked values passed quality control. Across 5 comparable years, mean wave height was below the same-month mean of 4 ft and mean wave period was below the same-month mean of 4.5 seconds.

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

Typical Significant Wave Height

3.5ft
Mean: 3.9 ft
P10–P90: 1.3 — 7.2 ft
Recorded extremes

0.6 — 13.5 ft

Available for 704 of 706 hourly samples

Mean Observed Wave Period

4.4secs
P10–P90: 3.2 — 5.5secs
Recorded extremes

2.6 — 9.4secs

Typical Observed Wind

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

Available for 0 of 706 hourly samples

Mean Water Temperature

-°C
P10–P90: - — -°C

Available for 0 of 706 hourly samples

Compared With Previous Septembers

Historical baseline from 6,835 observations across 5 years.

Wave Height
3.9ft
0.1ft below mean
Historical mean 4.035ft
Wave Period
4.4s
0.1s below mean
Historical mean 4.5s
Water Temperature
–
Not enough comparable data

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 Sep 2015Last observation shown
Metric
Mean significant wave height (ft)577498442122225376452424543211
Mean maximum wave height (ft)813127171486323333961210794636976412
Mean average period (s)555466555333335455554454554444
Mean zero-crossing period (s)455466554333334455454444544444
Mean peak wave directionNNWconcentration 94%Wconcentration 99%Wconcentration 96%WSWconcentration 82%NWconcentration 99%NWconcentration 100%NWconcentration 100%NWconcentration 100%NWconcentration 99%NNEconcentration 61%Econcentration 96%SEconcentration 83%Sconcentration 81%Sconcentration 74%SWconcentration 99%SWconcentration 97%SWconcentration 90%WNWconcentration 97%NWconcentration 99%NWconcentration 100%NWconcentration 81%SWconcentration 99%NWconcentration 94%WSWconcentration 78%Wconcentration 97%WNWconcentration 99%NWconcentration 100%NNWconcentration 100%NWconcentration 99%NWconcentration 99%

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.

Observation data source

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

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