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Fanø Bugt wave buoy daily means for Apr 2015

Daily means from the Fanø Bugt wave buoy for Apr 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

1,440 wave-buoy observations covered all 30 days. Typical wave height was 2.5 ft (10th–90th percentile 0.9–4.8 ft), while mean average wave period was 3.9 seconds (10th–90th percentile 3.1–4.7 seconds). All 4,316 checked values passed quality control. Across 4 comparable years, mean wave height was above the same-month mean of 2.2 ft and mean wave period was above the same-month mean of 3.7 seconds.

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

Typical Significant Wave Height

2.5ft
Mean: 2.8 ft
P10–P90: 0.9 — 4.8 ft
Recorded extremes

0.6 — 10.7 ft

Mean Observed Wave Period

3.9secs
P10–P90: 3.1 — 4.7secs
Recorded extremes

2.6 — 6.5secs

Typical Observed Wind

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

Available for 0 of 720 hourly samples

Mean Water Temperature

-°C
P10–P90: - — -°C

Available for 0 of 720 hourly samples

Compared With Previous Aprils

Historical baseline from 5,705 observations across 4 years.

Wave Height
2.8ft
0.6ft above mean
Historical mean 2.198ft
Wave Period
3.9s
0.2s above mean
Historical mean 3.7s
Water Temperature
–
Not enough comparable data

Chart showing grouped wave observations for Fanø Bugt. 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 Fanø Bugt wave buoy

Fanø Bugt is a Danish Coastal Authority directional buoy in the eastern North Sea southwest of Esbjerg. Its setting between the open sea, the island of Fanø and the approaches to the Wadden Sea represents conditions relevant to the harbour entrance, tidal inlets and the low-lying southwest Danish coast.

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

Metrics are rows; days run left to right.
Fanø Bugt wave buoy daily means Apr 2015Last observation shown
Metric
Mean significant wave height (ft)853211221135544432113322322343
Mean maximum wave height (ft)1386322442149976653226543544575
Mean average period (s)644333444435544433434433444444
Mean zero-crossing period (s)544333334435544433333433444444
Mean peak wave directionWconcentration 100%WNWconcentration 97%WNWconcentration 99%WNWconcentration 98%WNWconcentration 98%Wconcentration 99%Wconcentration 100%Wconcentration 100%WNWconcentration 99%WNWconcentration 99%WSWconcentration 64%WSWconcentration 97%Wconcentration 99%WSWconcentration 98%Wconcentration 99%WNWconcentration 99%NWconcentration 99%WNWconcentration 99%WNWconcentration 64%NWconcentration 96%NWconcentration 100%WNWconcentration 99%WNWconcentration 99%WSWconcentration 94%WSWconcentration 98%Wconcentration 98%Wconcentration 100%Wconcentration 96%WSWconcentration 98%WSWconcentration 98%

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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