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Spurn Point wave buoy daily means for Sep 2025

Daily means from the Spurn Point wave buoy for Sep 2025, 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 ft (10th–90th percentile 1–3.4 ft), while mean average of more than one wave period type was 5.7 seconds (10th–90th percentile 3–10 seconds). Mean water temperature was 16.1°C (10th–90th percentile 14.8–17.3°C). 7 of 5,746 checked values (0.1%) were excluded by quality control. Across 1 comparable year, mean wave height was below the same-month mean of 2.5 ft and mean wave period was below the same-month mean of 6.8 seconds.

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

Typical Significant Wave Height

2ft
Mean: 2.1 ft
P10–P90: 1 — 3.4 ft
Recorded extremes

0.6 — 7.5 ft

Mean Observed Wave Period

5.7secs
P10–P90: 3 — 10secs
Recorded extremes

1.7 — 13.3secs

Available for 718 of 720 hourly samples

Observed Wave Direction

ESE

Circular concentration: 58%

Mean Water Temperature

16.1°C
P10–P90: 14.8 — 17.3°C
Recorded extremes

14.3 — 17.7°C

Compared With Previous Septembers

Historical baseline from 1,437 observations across 1 year.

Wave Height
2.1ft
0.4ft below mean
Historical mean 2.526ft
Wave Period
5.7s
1.1s below mean
Historical mean 6.8s
Water Temperature
16.1°C
0.7°C above mean
Historical mean 15.4°C

Chart showing grouped wave observations for Spurn Point. 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 Spurn Point wave buoy

Spurn Point is a Channel Coastal Observatory wave station off the narrow spit at the mouth of the Humber. It records North Sea conditions beside a highly mobile coastal landform and provides context for the estuary entrance, nearby shipping routes and the exposed southern Holderness coast.

Its current data source reports wave height, wave period, wave direction, directional spread and sea temperature.

Metrics are rows; days run left to right.
Spurn Point wave buoy daily means Sep 2025Last observation shown
Metric
Mean significant wave height (ft)212112QC rejected21322223222225332332211
Mean peak period (s)445444665543444569610911107666565
Mean zero-crossing period (s)333333443433333343345654444443
Mean peak wave directionSEconcentration 99%SEconcentration 85%SEconcentration 86%SSEconcentration 78%Variableconcentration 24%SEconcentration 82%ESEconcentration 99%Econcentration 98%ESEconcentration 85%ESEconcentration 97%SSWconcentration 65%SWconcentration 72%SSEconcentration 61%SSEconcentration 64%SWconcentration 68%NWconcentration 31%ESEconcentration 53%ENEconcentration 62%SEconcentration 62%ENEconcentration 82%ENEconcentration 98%ENEconcentration 98%ENEconcentration 98%ENEconcentration 97%Econcentration 99%Econcentration 99%Econcentration 89%ESEconcentration 93%NEconcentration 78%Econcentration 61%
Mean directional spread (°)24.129.824.931.441.233.722.133.532.827.936.338.231.728.825.828.928.241.038.239.128.932.334.731.327.126.929.029.332.528.4
Mean water temperature(°C)17.417.417.317.217.117.217.317.217.117.016.916.516.316.115.915.615.615.715.915.915.615.315.115.015.014.914.914.814.814.7

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 Regional Coastal Monitoring Programme.

Learn how SurfHog combines, checks and summarizes observations in the data and methodology notes.

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