Surf Forecasts:
Caerhays surf forecast from 12 Aug 2026:
- Most powerful swell: Wednesday 12 Aug, 1PM (local time) - 3ft (0.9m), 4s period, ESE swell with 28 kJ wave energy.
Best Forecast Surf Conditions for Caerhays this week:
The most powerful waves expected at Caerhays in the next 16 days are 0.9m 4s and forecast to arrive on Wednesday (Aug 12) at 1PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Saturday (Aug 15) at 10AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 1PM (Wed 12th Aug) | 3ft (0.9m) 4s |
Table - best surf conditions forecast for Caerhays over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's have a look at what's on the cards for our local stretch.
To be straight with you, the next two weeks are looking pretty grim for any proper surf. We're staring down the barrel of a long, flat spell. From today, Wednesday the 12th of August, right through until Friday the 21st of August, the waves are tiny and the energy is just not there. We're talking about a solid 10-day gap with barely a ripple to get excited about. The combined swell energy barely cracks double digits for most of that time, hanging around in the weak range between 5 and 32 (32). It's a real bummer, but it happens.
The only glimmer of something that might be worth a look pops up right at the tail end of the forecast. On Saturday the 22nd of August, there's a bit of a pulse forecast for the afternoon. Caerhays will see a 4ft swell from the SSW, but it's a short-period wind swell of only 5 seconds. The combined energy kicks up to 87 (87), which is still weak, but it's the best we've got. The wind will be a moderate breeze from the NW, coming cross-offshore, which should keep the surface clean. It's not a stand-out day by any means, but compared to the flat spell before it, it's the only window with a paddle. The crowds at Caerhays can pop up sometimes, so you might have a few others with the same idea.
Honestly, the whole period is a write-off for quality waves. The water temperature is about average for this time of year, so the 5/4mm wetsuit will be fine. Don't hold your breath, but keep an eye on the forecasts – things can change.
Rusty.
Short Range ForecastMostly dry. Warm (max 25°C on Thu morning, min 18°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 20°C on Sun afternoon, min 14°C on Sat night). Winds decreasing (fresh winds from the NNW on Sat afternoon, calm by Sun morning). | ||||||||||||||||||||
Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | |||||||||||||||
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) | ESE 4 | ESE 4 | ESE 5 | WSW 11 | WSW 10 | WSW 10 | WSW 10 | WSW 8 | WSW 7 | WSW 8 | S 12 | W 8 | W 7 | S 18 | W 7 | S 18 | S 18 | S 16 | S 17 | S 17 | S 17 |
Wave Graph  | |||||||||||||||||||||
 kJ | 18 | 16 | 11 | 23 | 21 | 10 | 9 | 7 | 5 | 6 | 3 | 1 | 1 | 6 | 1 | 6 | 6 | 5 | 6 | 6 | 6 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | off | off | off | cross-off | cross-off | cross-off | cross-off | glassy | on | cross-on | cross-off |
High Tide | 5:27AM4.23m | 5:49PM4.64m | 6:17AM4.43m | 6:36PM4.84m | 7:01AM4.56m | 7:17PM4.93m | 7:41AM4.60m | 7:56PM4.89m | 8:18AM4.55m | 8:34PM4.73m | 8:55AM4.41m | 9:11PM4.48m | 9:32AM4.20m | 9:50PM4.16m | |||||||
Low Tide | 12:01PM0.17m | 00:29AM-0.11m | 12:46PM-0.08m | 1:13AM-0.31m | 1:28PM-0.21m | 1:54AM-0.35m | 2:08PM-0.20m | 2:33AM-0.24m | 2:47PM-0.05m | 3:10AM-0.01m | 3:24PM0.21m | 3:46AM0.32m | 4:01PM0.55m | ||||||||
 | |  | | |  |  | | | | | | | | |  | | | | |  | |
 | 6:01 | — | — | 6:03 | — | — | 6:05 | — | — | 6:07 | — | — | 6:07 | — | — | 6:09 | — | — | 6:11 | — | — |
 | — | 8:45 | — | — | 8:43 | — | — | 8:40 | — | — | 8:38 | — | — | 8:37 | — | — | 8:35 | — | — | 8:32 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 23 | 23 | 25 | 24 | 19 | 22 | 21 | 17 | 18 | 18 | 16 | 19 | 20 | 16 | 17 | 17 | 16 | 20 | 22 | 17 |
Feels °C | 19 | 20 | 23 | 21 | 21 | 19 | 22 | 19 | 16 | 12 | 12 | 11 | 18 | 18 | 14 | 14 | 14 | 16 | 19 | 18 | 12 |
Swell 1 Height (m) Direction Period (s) | WSW 10 | WSW 10 | ESE 5 | WSW 11 | WSW 10 | WSW 10 | WSW 10 | WSW 8 | WSW 7 | WSW 8 | SW 8 | W 8 | W 7 | W 7 | E 5 | — | S 18 | W 8 | S 17 | S 17 | WSW 6 |
| kJ | 10 | 10 | 9 | 23 | 21 | 10 | 9 | 7 | 5 | 6 | 2 | 1 | 1 | 1 | 1 | — | 6 | 1 | 6 | 6 | 4 |
Swell 2 Height (m) Direction Period (s) | S 12 | S 12 | WSW 10 | ESE 5 | ESE 5 | — | S 11 | S 13 | S 13 | — | S 12 | — | — | — | W 7 | S 18 | W 7 | — | W 7 | W 9 | S 17 |
| kJ | 3 | 3 | 11 | 4 | 2 | — | 2 | 3 | 3 | — | 3 | — | — | — | 1 | 6 | 1 | — | 1 | 2 | 6 |
Swell 3 Height (m) Direction Period (s) | SW 6 | W 6 | — | — | — | S 11 | — | — | — | — | — | — | E 5 | S 18 | — | W 7 | — | S 16 | — | — | W 8 |
| kJ | 1 | 1 | — | — | — | 2 | — | — | — | — | — | — | 2 | 6 | — | 1 | — | 5 | — | — | 1 |
Wind waves Height (m) Direction Period (s) | ESE 4 | ESE 4 | — | — | NW 3 | — | — | — | NNW 3 | N 3 | N 3 | N 3 | N 3 | NNW 3 | N 2 | — | — | — | — | WSW 3 | WNW 3 |
| kJ | 18 | 16 | — | — | 3 | — | — | — | 1 | 8 | 8 | 8 | 1 | 2 | 1 | — | — | — | — | 4 | 2 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 25 | 25 | 25 | 19 | 191 | 27 | 27 | 62 | 54 | 270 | 252 | 230 | 275 | 427 | 428 | 412 | 307 | 62 | 27 | 44 | 275 |
Best forecast wave conditions in South Cornwall | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
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Information about the Caerhays Surf forecast
The above surf forecast table for Caerhays provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Caerhays can be found by selecting the local surf guide option on the grey menu. Our Caerhays 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 (Caerhays) 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 Caerhays 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.
Caerhays is 13 km (8 miles) from Saint Austell. If you plan a holiday in South Cornwall, look for hotels and other accommodation in Saint Austell. Saint Austell has rooms for a wide range of budgets as well as car hire and transport links.
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