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Fjaltring wave buoy daily means for Feb 2018

Daily means from the Fjaltring wave buoy for Feb 2018, 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

1,325 wave-buoy observations covered all 28 days. Typical wave height was 3.5 ft (10th–90th percentile 1.4–7 ft), while mean average of more than one wave period type was 5.1 seconds (10th–90th percentile 3.7–6.2 seconds). All 3,961 checked values passed quality control. Across 8 comparable years, mean wave height was below the same-month mean of 4.3 ft and mean wave period was above the same-month mean of 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: 1.4 — 7 ft
Recorded extremes

0.9 — 13.4 ft

Available for 665 of 667 hourly samples

Mean Observed Wave Period

5.1secs
P10–P90: 3.7 — 6.2secs
Recorded extremes

2.9 — 8.6secs

Typical Observed Wind

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

Available for 0 of 667 hourly samples

Mean Water Temperature

-°C
P10–P90: - — -°C

Available for 0 of 667 hourly samples

Compared With Previous Februarys

Historical baseline from 10,355 observations across 8 years.

Wave Height
3.9ft
0.4ft below mean
Historical mean 4.331ft
Wave Period
5.1s
0.1s above mean
Historical mean 5s
Water Temperature
–
Not enough comparable data

Chart showing grouped wave observations for Fjaltring. 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 Fjaltring wave buoy

Fjaltring is a Danish Coastal Authority directional buoy off the exposed central west coast of Jutland. The authority has maintained a continuous wave-measurement programme here since 1980, creating a key reference for Denmark's most erosion-prone coast and the long-running Lodbjerg–Nymindegab protection works.

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

Metrics are rows; days run left to right.
Fjaltring wave buoy daily means Feb 2018Last observation shown
Metric
Mean significant wave height (ft)75332246658105665343222111233
Mean average wave height (ft)----------------------------
Mean maximum wave height (ft)1385633710118131699119675344322355
Mean average period (s)6654755565665556555566644344
Mean zero-crossing period (s)6544645555565555544555544343
Mean maximum wave period (s)----------------------------
Mean peak wave directionWNWconcentration 97%NWconcentration 98%NWconcentration 94%NNWconcentration 89%WNWconcentration 100%NWconcentration 100%WNWconcentration 96%WSWconcentration 83%WSWconcentration 99%WSWconcentration 86%WSWconcentration 99%WNWconcentration 100%Wconcentration 97%WSWconcentration 100%SWconcentration 100%Wconcentration 98%Wconcentration 99%WSWconcentration 99%WNWconcentration 63%Nconcentration 96%WNWconcentration 99%NWconcentration 100%NWconcentration 100%NWconcentration 100%NWconcentration 100%NWconcentration 99%Nconcentration 97%Nconcentration 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.

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.

› Wave Buoy List