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Spurn Point wave buoy daily means for Apr 2025

Daily means from the Spurn Point wave buoy for Apr 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 1.8 ft (10th–90th percentile 0.8–3.5 ft), while mean average of more than one wave period type was 6 seconds (10th–90th percentile 3.5–9.8 seconds). Mean water temperature was 10°C (10th–90th percentile 8.8–11.2°C). 13 of 5,731 checked values (0.2%) were excluded by quality control.

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

Typical Significant Wave Height

1.8ft
Mean: 2 ft
P10–P90: 0.8 — 3.5 ft
Recorded extremes

0.3 — 4.9 ft

Mean Observed Wave Period

6secs
P10–P90: 3.5 — 9.8secs
Recorded extremes

1.7 — 14.3secs

Observed Wave Direction

E

Circular concentration: 80%

Mean Water Temperature

10°C
P10–P90: 8.8 — 11.2°C
Recorded extremes

7.6 — 13.2°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 Apr 2025Last observation shown
Metric
Mean significant wave height (ft)233344211221112313333222221111
Mean peak period (s)5565865448128745574589776874444
Mean zero-crossing period (s)344444433554334433445444443333
Mean peak wave directionEconcentration 89%Econcentration 99%Econcentration 98%ENEconcentration 97%ENEconcentration 98%Econcentration 99%Econcentration 99%ESEconcentration 96%ENEconcentration 93%ENEconcentration 97%ENEconcentration 97%Econcentration 87%Econcentration 69%SEconcentration 60%Econcentration 97%SEconcentration 72%Econcentration 67%SEconcentration 95%Econcentration 99%ENEconcentration 98%ENEconcentration 99%Econcentration 90%ENEconcentration 98%Econcentration 97%ENEconcentration 97%ENEconcentration 92%SEconcentration 79%SEconcentration 81%SEconcentration 69%SSEconcentration 70%
Mean directional spread (°)36.027.026.029.328.327.627.730.735.131.343.638.041.935.529.530.239.224.127.429.528.628.630.727.531.431.938.748.143.642.0
Mean water temperature(°C)8.38.48.68.99.09.19.29.39.39.49.59.79.89.99.910.010.110.210.310.410.510.710.710.710.810.911.111.211.411.6

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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