Surf Forecasts:
Caerhays surf forecast from 12 Sep 2026:
- Most powerful swell: Sunday 13 Sep, 4PM (local time) - 1.5ft (0.5m), 10s period, SW swell with 52 kJ wave energy.
Best Forecast Surf Conditions for Caerhays this week:
The most powerful waves expected at Caerhays in the next 16 days are 0.5m 10s and forecast to arrive on Sunday (Sep 13) at 4PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 2s period and expected on Tuesday (Sep 15) at 1PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4PM (Sun 13th Sep) | 1.5ft (0.5m) 10s |
Table - best surf conditions forecast for Caerhays over the next 16 days.
The Lowdown
Alright, I'm gonna level with you. For Caerhays, the next couple weeks are a real bummer. It’s mostly flat and frustrating from here on out.
We’ve got a big old gap with nothing going on. Starting Saturday the 12th, all the way through to Tuesday the 22nd of September, it’s all “poor surf conditions.” We’re talking tiny waves – heights barely hitting 2ft, with short, weak periods. The combined energy is puny, like 26 or even 5 for some sessions. That’s a flat ocean, plain and simple.
For the first week, the wind is mostly cross-onshore or just cross, chopping up whatever little bump there is. Tuesday the 15th and Wednesday the 16th give us some clean, cross-offshore winds, but with a wave of just 0.7ft, it’s flat. It’s a clean, empty sea.
A tiny glimmer shows up on Sunday the 20th of September. Around midday, we get a moderate offshore breeze from NNW at 12 mph, with a clean 0.7ft wave from the WSW. The period stretches to 10 seconds, so there's more shape, but the size is still missing. The energy’s at 19 – still very weak.
The only real standout is the morning of Wednesday the 23rd of September. It goes glassy – dead calm wind from the WSW. The swell height is a miserable 0.3ft with a 7-second period. The wave energy is a 1 in the brackets. It’s as flat as a lake for a few hours. Unless you’re on a foil or a long paddleboard, it’s a complete no-go.
After that, a fresh southerly breeze returns on the 24th and 25th, bringing more onshore chop, but the swell stays at a tiny 0.3ft. It’s still not breaking.
So, to sum it up: Caerhays is going through a flat spell. There’s nothing good to surf in this 16-day window. This kind of blank run is pretty normal for the area when the weather patterns aren't lining up. We just have to hope things change. The stronger cross-shore winds later on might be fun for a kite, but for a paddle surfer, it’s a long stretch of nothing.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Sat night. Warm (max 21°C on Mon morning, min 14°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummarySome drizzle, heaviest during Thu morning. Very mild (max 18°C on Mon night, min 13°C on Tue night). Mainly fresh winds. | ||||||||||||||||||||
Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 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) | SW 8 | SW 4 | W 11 | WSW 11 | SW 10 | SW 10 | SW 9 | WSW 9 | WSW 8 | WSW 8 | W 11 | WSW 8 | WSW 8 | WSW 12 | WSW 11 | W 10 | WSW 6 | SW 5 | WSW 13 | WSW 13 | S 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 20 | 6 | 9 | 11 | 52 | 25 | 14 | 8 | 6 | 6 | 2 | 12 | 7 | 13 | 23 | 2 | 3 | 4 | 17 | 16 | 5 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross-off | cross-off | cross-off | cross-off | cross | cross |
High Tide | 6:37AM4.63m | 6:51PM4.89m | 7:10AM4.69m | 7:24PM4.84m | 7:42AM4.66m | 7:58PM4.69m | 8:14AM4.52m | 8:31PM4.44m | 8:47AM4.31m | 9:05PM4.13m | 9:23AM4.02m | 9:43PM3.79m | 10:04AM3.70m | 10:32PM3.44m | |||||||
Low Tide | 1:06PM-0.20m | 1:28AM-0.30m | 1:43PM-0.19m | 2:03AM-0.18m | 2:19PM-0.05m | 2:37AM0.06m | 2:53PM0.20m | 3:10AM0.37m | 3:27PM0.51m | 3:42AM0.73m | 4:01PM0.87m | 4:16AM1.09m | 4:38PM1.24m | ||||||||
 |  |  |  | |  | | |  | | | | | | | | | | | | | |
 | 6:48 | — | — | 6:50 | — | — | 6:52 | — | — | 6:54 | — | — | 6:54 | — | — | 6:56 | — | — | 6:58 | — | — |
 | — | 7:40 | — | — | 7:37 | — | — | 7:36 | — | — | 7:34 | — | — | 7:31 | — | — | 7:29 | — | — | 7:27 | — |
mm | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — |
Temp °C | 18 | 19 | 18 | 19 | 20 | 19 | 21 | 21 | 18 | 18 | 17 | 16 | 15 | 15 | 16 | 16 | 15 | 15 | 17 | 18 | 15 |
Feels °C | 14 | 15 | 16 | 19 | 20 | 20 | 20 | 19 | 17 | 13 | 12 | 13 | 9 | 9 | 12 | 12 | 9 | 12 | 14 | 14 | 14 |
Swell 1 Height (m) Direction Period (s) | W 10 | W 7 | W 11 | WSW 6 | S 13 | SW 10 | S 12 | WSW 9 | WSW 8 | SSW 3 | WSW 5 | WSW 8 | WSW 8 | WSW 12 | WSW 11 | W 10 | SSW 4 | SW 5 | WSW 6 | WSW 13 | W 12 |
| kJ | 2 | 1 | 9 | 4 | 3 | 25 | 3 | 8 | 6 | 1 | 2 | 12 | 7 | 13 | 23 | 2 | 2 | 4 | 3 | 16 | 3 |
Swell 2 Height (m) Direction Period (s) | — | W 10 | — | WSW 11 | SW 13 | S 13 | SW 12 | S 12 | S 12 | WSW 8 | W 11 | W 10 | SW 12 | WSW 8 | — | — | WSW 6 | W 10 | WSW 13 | SW 6 | SW 6 |
| kJ | — | 2 | — | 11 | 7 | 3 | 6 | 3 | 3 | 6 | 2 | 2 | 6 | 6 | — | — | 3 | 2 | 17 | 2 | 2 |
Swell 3 Height (m) Direction Period (s) | S 15 | S 15 | — | S 13 | — | — | — | — | W 12 | W 11 | W 8 | S 11 | W 10 | — | — | — | W 10 | — | S 12 | S 12 | S 16 |
| kJ | 4 | 4 | — | 3 | — | — | — | — | 3 | 2 | 1 | 2 | 2 | — | — | — | 2 | — | 3 | 3 | 5 |
Wind waves Height (m) Direction Period (s) | SW 8 | SW 4 | SW 4 | SW 4 | SW 10 | — | SW 9 | SSW 3 | S 3 | — | NW 3 | NW 3 | NNW 3 | NW 3 | — | SW 2 | WNW 2 | — | — | — | — |
| kJ | 20 | 6 | 8 | 9 | 52 | — | 14 | 1 | 1 | — | 3 | 2 | 3 | 3 | — | 2 | 1 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 27 | 180 | 27 | 153 | 39 | 27 | 27 | 27 | 26 | 43 | 210 | 75 | 31 | 153 | 191 | 210 | 209 | 54 | 75 | 180 | 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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