Surf Forecasts:
Crantock surf forecast from 17 Aug 2026:
- Most powerful swell: Thursday 20 Aug, 1AM (local time) - 7ft (2.1m), 8s period, W swell with 545 kJ wave energy.
Best Forecast Surf Conditions for Crantock this week:
The most powerful waves expected at Crantock in the next 16 days are 2.1m 8s and forecast to arrive on Thursday (Aug 20) at 1AM. Winds are predicted to be cross-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 Monday (Aug 24) at 10AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 1AM (Thu 20th Aug) | 7ft (2.1m) 8s |
Table - best surf conditions forecast for Crantock over the next 16 days.
The Lowdown
Alright, Rusty here again. Let’s break it down in the old money. It’s a long, dusty 16 days for Crantock. We’re looking at a big dry spell of poor surf from the start of the forecast right through the end of August, with only one tiny, fleeting moment of hope.
The one and only chance to get wet is on Sunday, August 30th. The morning is nothing special, but the afternoon is the only stand-out. The wind goes glassy, and the water turns to glass. We’ve got a solid 8ft swell coming from the West, with a period of 9 seconds. The combined wave energy is a strong 908. That’s a big wave, so this is strictly for the experts. If you’re a beginner, stay on the beach. The swell direction is from the West, which is exactly what this sheltered river mouth likes to see. It’s a rare quiet moment in a long, flat period. The water temp is 66°, which is a touch warmer than average for this time of year.
Before that, absolutely nothing. August 28th teases with an 8ft swell from the West in the morning, and a 7ft in the afternoon, with the combined energy jumping to 1283. But the wind is light, and the forecast marks it as marginal. The period is only 10 seconds, so it’s not the long, clean groundswell we need. For a spot like Crantock, that’s a no-go. The rest of the window is a relentless mess of cross-onshore winds, chop, and lumpy junk. The size is there, but the quality is gone.
The 30th of August afternoon is the only real window. It’s a tiny, promising blip in a long, bleak forecast. Get on it if you can.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Tue night. Warm (max 20°C on Mon morning, min 16°C on Wed night). Mainly fresh winds. | Days 4-6 Weather SummaryLight rain (total 3mm), mostly falling on Thu night. Very mild (max 19°C on Sat afternoon, min 14°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | |||||||||||||||
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) | WNW 6 | W 8 | W 6 | WNW 6 | W 6 | WNW 7 | W 6 | W 7 | W 8 | WNW 7 | WNW 9 | W 9 | W 8 | W 8 | W 9 | W 10 | W 9 | W 9 | N 5 | N 5 | N 5 |
Wave Graph  | |||||||||||||||||||||
 kJ | 60 | 118 | 72 | 139 | 130 | 175 | 94 | 212 | 545 | 245 | 506 | 246 | 108 | 80 | 37 | 45 | 40 | 25 | 33 | 28 | 33 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | cross-on | cross-on | cross-on | cross-on | cross | cross-off | cross | cross | cross-on | cross |
High Tide | 9:15PM6.25m | 9:33AM5.88m | 9:53PM5.75m | 10:13AM5.43m | 10:34PM5.22m | 10:57AM4.97m | 11:25PM4.73m | 11:55AM4.57m | 00:36AM4.36m | 1:20PM4.36m | 2:10AM4.29m | 2:52PM4.47m | 3:30AM4.52m | ||||||||
Low Tide | 3:11PM0.60m | 3:33AM0.81m | 3:48PM1.02m | 4:08AM1.28m | 4:27PM1.49m | 4:48AM1.75m | 5:13PM1.94m | 5:40AM2.17m | 6:19PM2.31m | 6:58AM2.45m | 7:54PM2.45m | 8:37AM2.43m | 9:24PM2.25m | ||||||||
 |  |  | | |  | | | | | | |  | | | | |  | | | | |
 | 6:11 | — | — | 6:11 | — | — | 6:13 | — | — | 6:15 | — | — | 6:16 | — | — | 6:18 | — | — | 6:20 | — | — |
 | — | 8:37 | — | — | 8:35 | — | — | 8:32 | — | — | 8:30 | — | — | 8:29 | — | — | 8:27 | — | — | 8:24 | — |
mm | — | — | — | — | — | 2 | — | — | 2 | — | — | 1 | 1 | 1 | — | — | — | — | — | — | — |
Temp °C | 20 | 18 | 19 | 19 | 18 | 17 | 18 | 18 | 17 | 18 | 17 | 15 | 17 | 16 | 15 | 18 | 19 | 18 | 18 | 18 | 17 |
Feels °C | 18 | 16 | 17 | 17 | 14 | 13 | 14 | 13 | 13 | 14 | 13 | 12 | 14 | 12 | 11 | 16 | 16 | 15 | 12 | 12 | 12 |
Swell 1 Height (m) Direction Period (s) | W 9 | SW 18 | W 16 | SW 17 | SW 17 | SW 17 | W 8 | SW 16 | WSW 15 | W 9 | WNW 9 | W 9 | W 8 | W 8 | W 9 | W 10 | NNW 5 | W 9 | W 9 | W 9 | W 9 |
| kJ | 40 | 12 | 5 | 11 | 11 | 12 | 78 | 10 | 23 | 169 | 506 | 246 | 108 | 80 | 37 | 45 | 16 | 25 | 14 | 14 | 6 |
Swell 2 Height (m) Direction Period (s) | W 18 | — | — | — | — | — | SW 16 | — | — | SW 14 | WSW 14 | WSW 14 | N 5 | SW 13 | SW 16 | N 4 | W 9 | WSW 15 | WSW 14 | WSW 14 | WSW 14 |
| kJ | 6 | — | — | — | — | — | 10 | — | — | 8 | 20 | 19 | 4 | 7 | 10 | 9 | 40 | 21 | 19 | 19 | 20 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | SW 13 | SW 16 | SW 13 | WSW 15 | WSW 15 | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | 7 | 10 | 7 | 21 | 21 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WNW 6 | W 8 | W 6 | WNW 6 | W 6 | WNW 7 | W 6 | W 7 | W 8 | WNW 7 | — | N 4 | — | NNW 5 | NNW 5 | — | — | N 5 | N 5 | N 5 | N 5 |
| kJ | 60 | 118 | 72 | 139 | 130 | 175 | 94 | 212 | 545 | 245 | — | 6 | — | 22 | 23 | — | — | 11 | 33 | 28 | 33 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 403 | 230 | 292 | 273 | 217 | 205 | 214 | 217 | 346 | 144 | 217 | 38 | 10 | 40 | 59 | 2 | 2 | 38 | 301 | 39 | 39 |
Best forecast wave conditions in North Cornwall | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
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Information about the Crantock Surf forecast
The above surf forecast table for Crantock provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Crantock can be found by selecting the local surf guide option on the grey menu. Our Crantock 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 (Crantock) 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 Crantock 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.
Crantock is 2 km (1 miles) from Newquay. If you plan a holiday in North Cornwall, look for hotels and other accommodation in Newquay. Newquay has rooms for a wide range of budgets as well as car hire and transport links.
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