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Fanø Bugt wave buoy daily means for Apr 2017

Daily means from the Fanø Bugt wave buoy for Apr 2017, 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

1,416 wave-buoy observations covered all 30 days. Typical wave height was 2.7 ft (10th–90th percentile 1.1–5.3 ft), while mean average of more than one wave period type was 4.1 seconds (10th–90th percentile 3–5 seconds). 3 of 4,157 checked values (0.1%) were excluded by quality control. Across 6 comparable years, mean wave height was above the same-month mean of 2.4 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

2.7ft
Mean: 3 ft
P10–P90: 1.1 — 5.3 ft
Recorded extremes

0.5 — 6.9 ft

Mean Observed Wave Period

4.1secs
P10–P90: 3 — 5secs
Recorded extremes

2.4 — 16.7secs

Available for 709 of 711 hourly samples

Typical Observed Wind

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

Available for 0 of 711 hourly samples

Mean Water Temperature

-°C
P10–P90: - — -°C

Available for 0 of 711 hourly samples

Compared With Previous Aprils

Historical baseline from 8,585 observations across 6 years.

Wave Height
3ft
0.6ft above mean
Historical mean 2.362ft
Wave Period
4.1s
0.4s 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 2017Last observation shown
Metric
Mean significant wave height (ft)111144422545534331134545323322
Mean maximum wave height (ft)2222666338799576521671089546534
Mean average period (s)433354443645645543344545444443
Mean zero-crossing period (s)333344433444544443344445444433
Mean peak wave directionWSWconcentration 99%WSWconcentration 98%WNWconcentration 98%WSWconcentration 69%Wconcentration 97%WNWconcentration 99%WNWconcentration 99%WNWconcentration 99%WSWconcentration 94%Wconcentration 98%Wconcentration 95%Wconcentration 100%Wconcentration 100%Wconcentration 99%WSWconcentration 96%Wconcentration 100%WNWconcentration 99%NEconcentration 56%NWconcentration 80%Wconcentration 98%WSWconcentration 97%WNWconcentration 100%WNWconcentration 99%WSWconcentration 99%Wconcentration 99%Wconcentration 99%Wconcentration 94%Wconcentration 98%WNWconcentration 67%SEconcentration 95%

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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