Surf Forecasts:
Caerhays surf forecast from 31 Aug 2026:
- Most powerful swell: Wednesday 2 Sep, 10PM (local time) - 5.5ft (1.7m), 8s period, WSW swell with 327 kJ wave energy.
Best Forecast Surf Conditions for Caerhays this week:
The most powerful waves expected at Caerhays in the next 16 days are 1.7m 8s and forecast to arrive on Wednesday (Sep 02) at 10PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Monday (Aug 31) at 1PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10PM (Wed 2nd Sep) | 5.5ft (1.7m) 8s |
Table - best surf conditions forecast for Caerhays over the next 16 days.
The Lowdown
Alright, Rusty here. Let me have a look at what we’ve got for the next couple of weeks.
Honestly, mate, I’ve got to be straight with you – we’re in a long flat spell. The first ten days of this forecast are a write-off. From Monday the 31st of August right through to the morning of Wednesday the 9th of September, every session is marked as poor surf conditions. There’s just nothing doing. The swell is tiny, the winds are mostly cross or cross-onshore, and the energy is flat. We’re looking at a solid ten-day gap with no worthwhile waves.
The water temperature at Caerhays is sitting at 64°, which is a touch warmer than normal for this time of year, so if you’re just having a swim, it’s not bad.
It’s not until the morning of Monday the 14th of September that we finally see a glimmer of hope. The swell picks up to 1 ft from the SW, with a very long period of 18 seconds – that’s proper groundswell energy. The combined swell energy is moderate at 113, and the wind is a clean cross-off from the WNW at 15 km/h. The guidance says this spot is a 4/5 rated, fairly exposed, and it prefers SSW swell, so this SW direction is a bit off its optimum, but the long period will still wrap in. The wave comment is “surfable waves but very ordinary conditions” – a score of 1 out of 10. It’s not a standout, but it’s the only thing on the table. The afternoon of the 14th drops back to poor conditions, and the next days are riddled with strong winds and messy chop.
So, what’s the pick? If you’re desperate, the Monday morning session on the 14th of September at Caerhays is your only shot. It’s small, clean, and has that long-period energy. But don’t expect much.
Rusty.
Short Range ForecastMostly dry. Very mild (max 19°C on Tue morning, min 15°C on Mon night). Winds increasing (calm on Mon night, fresh winds from the SW by Wed morning). | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Fri morning. Warm (max 21°C on Thu morning, min 13°C on Sat night). Winds decreasing (fresh winds from the WSW on Thu afternoon, calm by Sat night). | ||||||||||||||||||||
Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | |||||||||||||||
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) | SW 9 | WSW 11 | WSW 10 | SW 6 | SW 6 | SW 5 | SSW 4 | SW 4 | SSW 5 | SW 5 | SW 5 | SSW 5 | SW 5 | WSW 10 | WSW 14 | WSW 12 | WSW 12 | S 13 | S 13 | SE 3 | SE 4 |
Wave Graph  | |||||||||||||||||||||
 kJ | 45 | 44 | 20 | 9 | 6 | 7 | 8 | 27 | 19 | 23 | 32 | 15 | 8 | 10 | 18 | 15 | 13 | 4 | 3 | 5 | 4 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-off | cross | cross-off | cross-off | cross-off | cross-off | off | cross-on | on | cross |
High Tide | 7:56PM4.79m | 8:14AM4.58m | 8:30PM4.68m | 8:50AM4.47m | 9:09PM4.46m | 9:32AM4.27m | 9:56PM4.16m | 10:24AM3.99m | 10:56PM3.80m | 11:36AM3.71m | 00:23AM3.52m | 1:12PM3.59m | 2:05AM3.48m | ||||||||
Low Tide | 2:22PM-0.05m | 2:44AM-0.09m | 3:00PM0.05m | 3:22AM0.09m | 3:40PM0.25m | 4:03AM0.37m | 4:24PM0.54m | 4:49AM0.72m | 5:17PM0.89m | 5:47AM1.08m | 6:26PM1.20m | 7:06AM1.34m | 8:02PM1.30m | ||||||||
 |  |  | | | | | | | | |  |  | |  |  | | | | | | |
 | 6:31 | — | — | 6:33 | — | — | 6:33 | — | — | 6:35 | — | — | 6:37 | — | — | 6:39 | — | — | 6:39 | — | — |
 | — | 8:07 | — | — | 8:04 | — | — | 8:01 | — | — | 8:00 | — | — | 7:58 | — | — | 7:55 | — | — | 7:53 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | 2 | 2 | — | — | — | — | — | — | — | — |
Temp °C | 17 | 17 | 16 | 19 | 19 | 17 | 18 | 19 | 18 | 21 | 21 | 19 | 18 | 18 | 16 | 17 | 17 | 14 | 16 | 17 | 16 |
Feels °C | 12 | 12 | 14 | 16 | 15 | 16 | 14 | 15 | 16 | 19 | 18 | 17 | 13 | 13 | 12 | 14 | 14 | 13 | 14 | 15 | 15 |
Swell 1 Height (m) Direction Period (s) | SSW 6 | SSW 7 | SSW 6 | SW 6 | SW 6 | S 16 | S 16 | S 15 | WSW 8 | WSW 8 | SSW 15 | WSW 7 | SW 5 | WSW 10 | SW 6 | WSW 7 | WSW 7 | WSW 6 | W 10 | W 6 | W 8 |
| kJ | 29 | 26 | 17 | 9 | 5 | 5 | 5 | 5 | 6 | 6 | 23 | 5 | 6 | 10 | 10 | 5 | 5 | 4 | 2 | 1 | 1 |
Swell 2 Height (m) Direction Period (s) | SW 9 | WSW 11 | WSW 10 | W 10 | S 17 | S 16 | W 8 | — | S 15 | SW 15 | — | SW 15 | WSW 8 | SW 14 | WSW 14 | WSW 12 | WSW 12 | W 11 | S 13 | S 13 | S 12 |
| kJ | 37 | 44 | 20 | 2 | 6 | 5 | 1 | — | 4 | 9 | — | 9 | 6 | 8 | 18 | 15 | 13 | 2 | 3 | 3 | 3 |
Swell 3 Height (m) Direction Period (s) | WSW 11 | — | — | S 18 | — | — | — | — | — | — | — | — | SW 14 | — | SW 14 | SW 14 | S 13 | S 13 | — | W 10 | S 7 |
| kJ | 45 | — | — | 6 | — | — | — | — | — | — | — | — | 8 | — | 8 | 7 | 3 | 3 | — | 2 | 1 |
Wind waves Height (m) Direction Period (s) | WNW 3 | WNW 3 | — | — | SW 2 | SW 5 | SSW 4 | SW 4 | SSW 5 | SW 5 | SW 5 | SSW 5 | W 2 | W 3 | WNW 3 | WNW 2 | — | — | SE 3 | SE 3 | SE 4 |
| kJ | 3 | 4 | — | — | 1 | 7 | 8 | 27 | 19 | 23 | 32 | 15 | 1 | 6 | 1 | 1 | — | — | 2 | 5 | 4 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 210 | 165 | 27 | 27 | 44 | 27 | 191 | 270 | 27 | 27 | 270 | 27 | 217 | 210 | 191 | 31 | 37 | 25 | 25 | 29 | 27 |
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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