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Fanø Bugt wave buoy daily means for Sep 2023

Daily means from the Fanø Bugt wave buoy for Sep 2023, 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 2.3 ft (10th–90th percentile 1–6 ft), while mean average of more than one wave period type was 3.8 seconds (10th–90th percentile 2.8–4.9 seconds). All 4,317 checked values passed quality control. Across 12 comparable years, mean wave height was below the same-month mean of 3.1 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

2.3ft
Mean: 3 ft
P10–P90: 1 — 6 ft
Recorded extremes

0.4 — 14.4 ft

Mean Observed Wave Period

3.8secs
P10–P90: 2.8 — 4.9secs
Recorded extremes

2.3 — 7.9secs

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 Septembers

Historical baseline from 16,847 observations across 12 years.

Wave Height
3ft
0.1ft below mean
Historical mean 3.117ft
Wave Period
3.8s
0.7s below mean
Historical mean 4.5s
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 Sep 2023Last observation shown
Metric
Mean significant wave height (ft)223311111122323123995334622456
Mean average wave height (ft)------------------------------
Mean maximum wave height (ft)33542122113343523515147457943689
Mean average period (s)434443333433444333665444544445
Mean zero-crossing period (s)334443333333334333655444543445
Mean maximum wave period (s)------------------------------
Mean peak wave directionWconcentration 98%WNWconcentration 99%Wconcentration 98%Wconcentration 100%WNWconcentration 100%WNWconcentration 78%SSEconcentration 84%SSEconcentration 91%SSWconcentration 51%WNWconcentration 99%SSWconcentration 78%Wconcentration 85%NWconcentration 100%Wconcentration 95%WSWconcentration 92%Sconcentration 46%Variableconcentration 28%Sconcentration 87%WSWconcentration 98%WSWconcentration 99%SWconcentration 99%WSWconcentration 89%WSWconcentration 92%WSWconcentration 91%WSWconcentration 99%WSWconcentration 98%WSWconcentration 98%SWconcentration 83%WSWconcentration 99%Wconcentration 100%

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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