Surf Forecasts:
Caerhays surf forecast from 15 Sep 2026:
- Best quality surf: Sunday 20 Sep, 7AM (local time) - 4.5ft (1.4m), 10s period, W swell with cross-offshore winds.
- Most powerful swell: Sunday 20 Sep, 7AM (local time) - 4.5ft (1.4m), 10s period, W swell with 379 kJ wave energy.
- Next surfable swell (1★+): Sunday 20 Sep, 7AM (local time) - 4.5ft (1.4m), 10s period with W swell.
Best Forecast Surf Conditions for Caerhays this week:
The surf forecast for Caerhays over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Sep 20) at 7AM. The primary swell is predicted to be 1.4m and 10s period with a secondary swell of 0.4m and 5s. Another secondary swell of 0.1m and 10s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Caerhays in the next 16 days are 1.4m 10s and forecast to arrive on Sunday (Sep 20) at 7AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Thursday (Sep 17) at 4PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Sun 20th Sep) | 4.5ft (1.4m) 10s |
| Best Surf | 7AM (Sun 20th Sep) | 4.5ft (1.4m) 10s |
| Most Powerful | 7AM (Sun 20th Sep) | 4.5ft (1.4m) 10s |
Table - best surf conditions forecast for Caerhays over the next 16 days.
The Lowdown
Alright, folks, Rusty here. I’ve had a good look at the long-range for Caerhays, and I gotta tell you, it’s about as exciting as watching paint dry. We’re looking at a 16-day window with a whole lot of nothing on the menu. There’s a long stretch of flatness coming up, so don’t be in a hurry.
For the first week, the surf is basically non-existent. We’re talking about ankle-snappers, with swell heights mostly between 0.3ft and 2ft. The period is all over the place, from a weak 3-second windswell to a longer 11-second groundswell, but there’s just no size. The energy is super weak, with combined swell energy values in the low double digits, like 8 or 49. It’s just not doing anything. The wind is mostly offshore or cross-off, so it’s clean, but clean and flat is still flat. The water temp is about 64°, which is a bit warmer than usual for this time of year, so you might get away with a spring suit.
Tuesday and Wednesday are more of the same, tiny surf and clean conditions. Thursday and Friday the breeze picks up a bit, but the swell stays around 1ft to 2ft, still weak energy. It’s a real struggle. The weekend doesn’t offer any relief either. The swell drops to 0.3ft on Sunday, with a long 14-second period. It’s a tease, just enough to get your hopes up before it drops out completely. Monday is the same, with a glassy 0.3ft.
Going into the second week, it’s more of the same story. The 22nd and 23rd are still tiny, with a bit more wind chop. The energy is still weak. The 25th sees a strong ESE wind at 22 mph, but it’s only pushing around 0.3ft of chop. A complete write-off.
Then, there’s one small window of hope. On the 26th of September, a proper groundswell shows up. We’re looking at a 4ft swell from the SW with a 16-second period. The combined energy jumps up to 630, which is the biggest we see all period. But, the wind is ESE at 16 mph, making it cross-on and choppy. It’s going to be a bit of a mess, and at that size, it’s definitely not for the beginners. It has some push, but it won’t be clean. It’s the only day with any real size, but you’ll have to fight the wind. After that, it’s right back down to nothing for the end of the month.
So, there you have it. A whole lot of nothing, with one potentially messy day for the experts on the 26th. For everyone else, keep the board in the car and find something else to do. This stretch looks pretty bleak.
Rusty out.
Short Range ForecastSome drizzle, heaviest during Wed night. Very mild (max 17°C on Tue morning, min 14°C on Tue night). Mainly fresh winds. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Fri afternoon. Very mild (max 19°C on Sun afternoon, min 15°C on Sat night). Winds decreasing (fresh winds from the W on Fri afternoon, light winds from the W by Sun morning). | ||||||||||||||||||||
Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | |||||||||||||||
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 3 | W 3 | SW 8 | WSW 11 | WSW 11 | WSW 11 | SW 6 | SW 7 | SW 7 | WSW 13 | WSW 13 | SSW 6 | SW 6 | WSW 5 | SW 5 | S 14 | SW 4 | W 14 | W 13 | S 13 | S 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 4 | 4 | 16 | 49 | 25 | 11 | 27 | 17 | 17 | 35 | 17 | 22 | 15 | 15 | 9 | 4 | 4 | 4 | 3 | 3 | 3 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross-off | cross-off | cross-off | cross | cross-on | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | glassy | glassy | off |
High Tide | 8:31PM4.44m | 8:47AM4.31m | 9:05PM4.13m | 9:23AM4.02m | 9:43PM3.79m | 10:04AM3.70m | 10:32PM3.44m | 11:04AM3.38m | 11:51PM3.15m | 12:41PM3.19m | 1:33AM3.06m | 2:13PM3.25m | 2:53AM3.20m | ||||||||
Low Tide | 2:53PM0.20m | 3:10AM0.37m | 3:27PM0.51m | 3:42AM0.73m | 4:01PM0.87m | 4:16AM1.09m | 4:38PM1.24m | 4:56AM1.45m | 5:26PM1.59m | 5:51AM1.74m | 6:43PM1.83m | 7:29AM1.89m | 8:47PM1.78m | ||||||||
 | |  |  |  |  | | |  | |  | | | | | | | | | | | |
 | 6:54 | — | — | 6:54 | — | — | 6:56 | — | — | 6:58 | — | — | 7:00 | — | — | 7:01 | — | — | 7:03 | — | — |
 | — | 7:34 | — | — | 7:31 | — | — | 7:29 | — | — | 7:27 | — | — | 7:24 | — | — | 7:22 | — | — | 7:21 | — |
mm | — | — | — | — | — | 1 | — | — | — | — | 2 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 17 | 17 | 16 | 15 | 15 | 16 | 17 | 16 | 15 | 17 | 17 | 17 | 18 | 17 | 16 | 18 | 19 | 17 | 19 | 19 | 19 |
Feels °C | 12 | 12 | 13 | 11 | 10 | 11 | 11 | 10 | 10 | 12 | 13 | 14 | 15 | 15 | 15 | 18 | 18 | 18 | 20 | 20 | 18 |
Swell 1 Height (m) Direction Period (s) | W 11 | W 10 | SW 8 | WSW 11 | WSW 11 | WSW 11 | SW 6 | SW 7 | SW 7 | SW 7 | WSW 13 | SSW 6 | SW 6 | W 11 | W 10 | SW 4 | W 10 | WSW 6 | SW 6 | W 6 | W 7 |
| kJ | 2 | 2 | 16 | 49 | 25 | 11 | 27 | 17 | 17 | 12 | 17 | 22 | 15 | 2 | 2 | 3 | 2 | 3 | 2 | 1 | 1 |
Swell 2 Height (m) Direction Period (s) | S 11 | S 11 | WSW 10 | — | — | — | W 10 | WSW 10 | WSW 10 | WSW 13 | W 18 | W 12 | W 11 | S 15 | S 14 | W 10 | S 14 | W 14 | W 13 | W 12 | W 10 |
| kJ | 2 | 2 | 10 | — | — | — | 2 | 10 | 11 | 35 | 6 | 11 | 2 | 5 | 4 | 2 | 4 | 4 | 3 | 3 | 2 |
Swell 3 Height (m) Direction Period (s) | — | — | S 11 | — | — | — | — | — | — | — | — | S 16 | S 16 | S 11 | — | S 14 | — | W 10 | S 13 | S 13 | S 13 |
| kJ | — | — | 2 | — | — | — | — | — | — | — | — | 5 | 5 | 2 | — | 4 | — | 2 | 3 | 3 | 3 |
Wind waves Height (m) Direction Period (s) | W 3 | W 3 | NW 3 | NW 3 | NW 3 | WSW 3 | WNW 3 | W 3 | WNW 3 | — | WSW 3 | W 3 | — | WSW 5 | SW 5 | — | SW 4 | — | — | — | — |
| kJ | 4 | 4 | 2 | 2 | 2 | 3 | 3 | 5 | 2 | — | 6 | 1 | — | 15 | 9 | — | 4 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 210 | 210 | 38 | 31 | 210 | 191 | 486 | 533 | 154 | 210 | 218 | 418 | 218 | 218 | 152 | 27 | 27 | 25 | 25 | 41 | 28 |
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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