Surf Forecasts:
Sandy Mouth surf forecast from 16 Aug 2026:
- Most powerful swell: Thursday 20 Aug, 4AM (local time) - 8ft (2.4m), 8s period, WNW swell with 730 kJ wave energy.
Best Forecast Surf Conditions for Sandy Mouth this week:
The most powerful waves expected at Sandy Mouth in the next 16 days are 2.4m 8s and forecast to arrive on Thursday (Aug 20) at 4AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Sunday (Aug 23) at 10AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4AM (Thu 20th Aug) | 8ft (2.4m) 8s |
Table - best surf conditions forecast for Sandy Mouth over the next 16 days.
The Lowdown
Alright, I’ve had a look at the charts for Sandy Mouth, and honestly, it’s a bit of a tough stretch ahead. We’ve got a solid 16-day window to look at, but the first ten days or so are pretty grim. The water is sitting at 67°, which is a whopping 5° warmer than usual for this time of year – that’s really unusual, the ocean’s got a bit of a fever.
Right from the start, Sunday the 16th through to the end of the following week, there’s just nothing doing. The swell is tiny, mostly around 1 ft to 4 ft, and the period is short, so the waves are weak and gutless. The wind is a mess too, mostly cross or onshore, keeping things choppy and messy. The combined energy is low, staying in the double digits (18 to 113) for most of that first week, which tells you there’s no power in the water. Even the 19th and 20th of August, when the swell picks up to 5 ft-7 ft, the wind is howling onshore at 19-22 mph, so it’s just blown-out, lumpy slop. Not worth paddling out for.
Now, there is a light at the end of the tunnel. After a long, quiet spell, things start to change around the 28th of August. The Friday morning (28th) sees a clean 4 ft swell from the west with a gentle cross-offshore breeze. The energy jumps to 161, which is still moderate, but the conditions are finally workable. The real standout, though, is Saturday the 29th of August. The morning session is looking promising with a clean 6 ft west-northwest swell, a good 8-second period, and a clean cross-offshore wind. The combined energy is up to 498 – that’s strong, punchy energy. That’s a proper session, but given the size, it’s not for beginners; it’ll be a fun, solid wave for the experienced crew.
And then, just when you think it’s over, Monday the 31st of August morning is shaping up to be the best of the whole run. You’ve got a clean 6 ft west-northwest swell, an 8-second period, and glassy to near-calm conditions with a light cross-offshore breeze. The energy is pumping at 427. That’s a good, clean, powerful wave. The only thing to watch is that the optimum swell direction for Sandy Mouth is from the west, and this swell is more west-northwest, so it might not be absolutely perfect, but it’s still the pick of the lot. Crowds are possible, so get in early.
So, to sum it up: the first ten days are a write-off. Then we have a promising, but not sure thing, run from the 28th. The absolute best bet is the morning of Monday the 31st of August. Mark it in your calendar.
Stay patient.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Tue night. Very mild (max 19°C on Mon morning, min 16°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 10mm), heaviest on Wed night. Very mild (max 18°C on Thu afternoon, min 13°C on Fri night). Mainly fresh winds. | ||||||||||||||||||||
Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map | |||||||||||||||||||||
Wave Height (m) Direction Period (s) | W 7 | W 7 | W 7 | WNW 5 | WNW 8 | W 7 | W 6 | W 6 | W 6 | WNW 7 | W 7 | W 8 | WNW 8 | WNW 8 | W 7 | W 6 | WNW 5 | W 8 | NNW 5 | NNW 5 | NNW 5 |
Wave Graph | |||||||||||||||||||||
17 | 16 | 9 | 37 | 107 | 64 | 97 | 71 | 106 | 239 | 355 | 701 | 556 | 419 | 89 | 100 | 55 | 47 | 58 | 35 | 35 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | on | cross-on | cross-on | on | cross-on | on | on | on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross | cross-off | cross | cross-off |
High Tide | 9:10PM7.75m | 9:29AM7.30m | 9:47PM7.27m | 10:06AM6.84m | 10:25PM6.68m | 10:44AM6.32m | 11:05PM6.07m | 11:27AM5.79m | 11:54PM5.50m | 12:24PM5.31m | 1:03AM5.07m | 1:47PM5.04m | 2:38AM4.97m | ||||||||
Low Tide | 2:57PM0.32m | 3:20AM0.48m | 3:34PM0.69m | 3:55AM0.94m | 4:10PM1.17m | 4:31AM1.47m | 4:49PM1.71m | 5:11AM2.01m | 5:36PM2.24m | 6:04AM2.51m | 6:42PM2.68m | 7:23AM2.84m | 8:19PM2.85m | ||||||||
6:05 | — | — | 6:07 | — | — | 6:09 | — | — | 6:09 | — | — | 6:11 | — | — | 6:13 | — | — | 6:15 | — | — | |
— | 8:37 | — | — | 8:36 | — | — | 8:34 | — | — | 8:31 | — | — | 8:30 | — | — | 8:28 | — | — | 8:25 | — | |
mm | — | — | — | — | — | — | — | — | 2 | — | — | 4 | 2 | 2 | 2 | — | — | — | — | — | — |
Temp °C | 17 | 17 | 18 | 19 | 18 | 19 | 19 | 18 | 18 | 17 | 17 | 16 | 17 | 18 | 16 | 15 | 15 | 14 | 17 | 17 | 15 |
Feels °C | 15 | 14 | 18 | 19 | 17 | 18 | 18 | 15 | 14 | 12 | 10 | 10 | 11 | 13 | 13 | 11 | 10 | 10 | 12 | 12 | 11 |
Swell 1 Height (m) Direction Period (s) | W 7 | W 7 | W 7 | WNW 5 | WNW 8 | — | W 17 | W 6 | W 17 | W 16 | — | W 16 | W 15 | SW 14 | W 7 | W 6 | W 13 | W 8 | W 8 | W 8 | NNW 5 |
17 | 16 | 9 | 37 | 107 | — | 6 | 71 | 6 | 5 | — | 5 | 4 | 8 | 89 | 100 | 3 | 47 | 21 | 12 | 35 | |
Swell 2 Height (m) Direction Period (s) | — | — | W 18 | WNW 9 | W 18 | — | — | W 17 | — | — | — | — | — | — | W 9 | W 16 | W 16 | W 12 | W 11 | W 10 | W 10 |
— | — | 6 | 16 | 6 | — | — | 6 | — | — | — | — | — | — | 54 | 5 | 5 | 3 | 9 | 18 | 29 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | W 18 | — | — | — | — | — | — | — | — | — | — | W 14 | W 13 | — | W 16 | SW 15 | W 15 | SW 15 |
— | — | — | 6 | — | — | — | — | — | — | — | — | — | — | 4 | 3 | — | 5 | 9 | 4 | 8 | |
Wind waves Height (m) Direction Period (s) | NNW 4 | NNW 3 | WNW 3 | — | — | W 7 | W 6 | — | W 6 | WNW 7 | W 7 | W 8 | WNW 8 | WNW 8 | N 5 | N 5 | WNW 5 | NNW 4 | NNW 5 | NNW 5 | — |
6 | 2 | 2 | — | — | 64 | 97 | — | 106 | 239 | 355 | 701 | 556 | 419 | 13 | 18 | 55 | 6 | 58 | 35 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 235 | 413 | 229 | 296 | 430 | 248 | 91 | 966 | 376 | 278 | 553 | 360 | 481 | 501 | 68 | 81 | 402 | 80 | 279 | 227 | 227 |
Best forecast wave conditions in North Cornwall | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
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Information about the Sandy Mouth Surf forecast
The above surf forecast table for Sandy Mouth provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Sandy Mouth can be found by selecting the local surf guide option on the grey menu. Our Sandy Mouth surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Sandy Mouth) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Sandy Mouth may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Sandy Mouth is 2 km (1 miles) from Bude. If you plan a holiday in North Cornwall, look for hotels and other accommodation in Bude. Bude has rooms for a wide range of budgets as well as car hire and transport links.











