Skip to content
Surfhog home
Menu

Beryl A AWS wave buoy daily means for Jan 2021

Daily means from the Beryl A AWS wave buoy for Jan 2021, 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

726 wave-buoy observations covered all 31 days. Typical wave height was 7.5 ft (10th–90th percentile 3.3–13.8 ft), while mean reported wave period; measurement type unavailable was 6.4 seconds (10th–90th percentile 5–8 seconds). Typical wind was 15 mph (10th–90th percentile 4.7–26.4 mph). 20 of 2,904 checked values (0.7%) were excluded by quality control. Across 7 comparable years, mean wave height was below the same-month mean of 11.7 ft and mean wave period was below the same-month mean of 7 seconds.

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

Typical Wave Height

7.5ft
Mean: 8.2 ft
P10–P90: 3.3 — 13.8 ft
Recorded extremes

2.6 — 19.4 ft

Available for 716 of 726 hourly samples

Mean Wave Period

6.4secs
P10–P90: 5 — 8secs
Recorded extremes

4 — 11secs

Available for 716 of 726 hourly samples

Mean Water Temperature

-°C
P10–P90: - — -°C

Available for 0 of 726 hourly samples

Typical Wind

Variable, 15mph
Mean: 15.6 mph
P10–P90: 4.7 — 26.4 mph
Recorded extremes

0 — 45 mph

Circular concentration: 16%

Compared With Previous Januarys

Historical baseline from 5,105 observations across 7 years.

Wave Height
8.2ft
3.5ft below mean
Historical mean 11.7ft
Wave Period
6.4s
0.6s below mean
Historical mean 7s
Water Temperature
–
Not enough comparable data

Chart showing grouped wave observations for Beryl A AWS. 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 Beryl A AWS wave buoy

Beryl A AWS (WMO 63110) is an automatic weather station on a privately operated oil platform in the northern North Sea. It is not a free-floating wave buoy. The station provides offshore meteorological observations for operations and forecasting, with available parameters determined by the platform's installed sensors.

Metrics are rows; days run left to right.
Beryl A AWS wave buoy daily means Jan 2021Last observation shown
Metric
Mean wave height (ft)864333610915131113QC rejectedQC rejected1313978111310667777QC rejected7
Mean observed period(s)6Reported6Reported5Reported4Reported6Reported5Reported5Reported7Reported6Reported9Reported9Reported7Reported7Reported5Reported6Reported7Reported7Reported6Reported6Reported6Reported7Reported7Reported7Reported7Reported7Reported7Reported7Reported8Reported7Reported6Reported6Reported
Mean wave power(kW/m)-------------------------------
Mean wind directionNconcentration 99%Nconcentration 89%Econcentration 87%NEconcentration 94%ESEconcentration 33%SWconcentration 96%Variableconcentration 20%NWconcentration 40%WSWconcentration 76%WNWconcentration 97%NNWconcentration 71%NNWconcentration 95%NEconcentration 65%Sconcentration 85%Sconcentration 98%SSEconcentration 96%WSWconcentration 94%WSWconcentration 92%SSWconcentration 84%ESEconcentration 82%ENEconcentration 82%NWconcentration 94%Wconcentration 95%SWconcentration 83%SSWconcentration 36%NNWconcentration 57%Nconcentration 99%NNEconcentration 67%NNEconcentration 76%Nconcentration 98%NWconcentration 90%
Mean wind speed (mph)21131012311218231812282310163521211519162618127713591914
Mean water temperature(°C)-------------------------------

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.

Which wave period is shown?

The table shows the best period measurement supplied for each observation. It is not necessarily the energy period used to calculate wave power.

Tp
Peak period: the period at the strongest spectral peak.
Tavg
The provider's average wave period.
Tm02
A mean period calculated from the wave spectrum.
Tz
Mean zero-crossing period.
Reported
A legacy value whose period type was not recorded.
Mixed
A daily or monthly mean containing more than one period type.

Wave power needs a genuine energy period (Te). SurfHog does not substitute Tp, Tavg, Tm02 or Tz when Te is missing.

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.

› Wave Buoy List