Surf Forecasts:
Caerhays surf forecast from 30 Aug 2026:
- Best quality surf: Monday 31 Aug, 7PM (local time) - 1.5ft (0.4m), 10s period, WSW swell with cross-offshore winds.
- Most powerful swell: Sunday 30 Aug, 10PM (local time) - 4.5ft (1.4m), 7s period, SW swell with 178 kJ wave energy.
- Next surfable swell (1★+): Monday 31 Aug, 7PM (local time) - 1.5ft (0.4m), 10s period with WSW 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 Monday (Aug 31) at 7PM. The primary swell is predicted to be 0.4m and 10s period with a secondary swell of 0.5m and 7s. 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 7s and forecast to arrive on Sunday (Aug 30) at 10PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Monday (Aug 31) at 7AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7PM (Mon 31st Aug) | 1.5ft (0.4m) 10s |
| Best Surf | 7PM (Mon 31st Aug) | 1.5ft (0.4m) 10s |
| Most Powerful | 10PM (Sun 30th Aug) | 4.5ft (1.4m) 7s |
Table - best surf conditions forecast for Caerhays over the next 16 days.
The Lowdown
Alright, let’s take a look at what we’ve got for Caerhays over the next couple of weeks. I’ll be straight with you, mate – it’s a bit of a tough stretch. The overall pattern is small and messy, with a lot of windy and lumpy conditions for the most part. We’ve got a big spike of energy right at the end of the first week, but the wind is going to ruin it for paddling. Let’s break it down day by day.
Starting out, the first few days are a write-off. Sunday the 30th and Monday the 31st of August are delivering weak, poor surf. Sunday has a cross-onshore wind at 19 mph making it lumpy, with only 3 ft to 4 ft of messy swell. Monday cleans up a bit with a cross-offshore breeze, but the swell drops right away to just 2 ft and even 1 ft in the afternoon. The combined energy is low, around 90 to 110 on Sunday, and then down to 70 Monday afternoon. Not worth paddling out.
Tuesday the 1st of September is flat with tiny 1 ft swell and light cross-onshore breezes. The combined energy is a pathetic 17 to 20. Wednesday the 2nd and Thursday the 3rd aren’t any better – we’re seeing 3 ft to 3 ft of short-period windswell, but the wind is onshore or cross-shore, making it choppy and lumpy. The energy stays in the low 20s to mid-60s.
Now, Friday the 4th of September looks clean with a cross-offshore breeze, but the swell is tiny, just 1.0 ft. The same goes for Saturday the 5th: clean but flat, with 0.7 ft to 2 ft of weak swell. The combined energy is 42 and 16 respectively. There’s a nice long period of 11 to 12 seconds on Friday, suggesting clean conditions for a micro-session if you’re desperate, but it’s not doing anything.
Sunday the 6th and Monday the 7th of September bring a bit of a lift. Sunday morning sees an onshore SSW breeze at 12 mph with 0.7 ft swell, but the combined energy is still tiny. By Monday afternoon, we get a jump: the swell hits 3 ft from the SSW with a short 5-second period, and the wind turns onshore. The energy goes up to 55, but the quality is poor.
Here’s the real beast – Tuesday the 8th of September. The morning shows a massive 12 ft swell from the WSW with a 10-second period. The combined energy explodes to 3228 – that’s very strong wave energy. However, there’s a catch: it’s coming with a fresh cross-onshore wind at 19 mph, so the surf will be messed up. At 12 ft, this is expert-only territory, if you can even get out. The afternoon cleans up with a cross-offshore WNW breeze, but the swell drops back to 3 ft. While the big swell is a standout for raw power, the onshore wind is a major negative. This setup would be far more interesting for kite surfing than paddle surfing.
After that, the second week from Wednesday the 9th of September onwards goes flat again. The swell drops to 0.7 ft or less, with a mix of cross-offshore and cross-shore winds. Combined energy is negligible, often below 20. The period is all over the place, from 4 to 14 seconds, but with no size, it doesn’t matter. There’s simply no surf to recommend from Wednesday the 9th right through to Monday the 14th of September.
So, the only real standout is the morning of Tuesday the 8th of September for the sheer size of the swell, but the wind wrecks it for quality surfing. The cleanest windows are on Friday the 4th, Saturday the 5th, and Monday the 8th afternoon, but those have almost no swell. If you’re after a paddle, this 16-day outlook is a bleak run.
Stay tuned, forecasts can change. Rusty.
Short Range ForecastLight rain (total 8mm), mostly falling on Sun afternoon. Very mild (max 19°C on Tue afternoon, min 15°C on Mon night). Winds decreasing (strong winds from the SW on Sun afternoon, light winds from the W by Mon night). | Days 4-6 Weather SummaryMostly dry. Warm (max 20°C on Thu morning, min 16°C on Tue night). Winds increasing (light winds from the WSW on Tue night, strong winds from the W by Fri morning). | ||||||||||||||||||||
Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | |||||||||||||||
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) | SSW 7 | SSW 7 | SW 9 | WSW 11 | WSW 11 | SSW 6 | SW 6 | SW 6 | SW 5 | SW 4 | SSW 5 | SSW 5 | SSW 5 | WSW 6 | SW 5 | WSW 11 | WSW 12 | SW 6 | W 11 | SW 4 | S 4 |
Wave Graph | |||||||||||||||||||||
76 | 142 | 95 | 75 | 44 | 16 | 9 | 8 | 6 | 20 | 39 | 47 | 27 | 31 | 30 | 23 | 27 | 14 | 9 | 11 | 2 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross-off | cross-off | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-on | cross-off | cross-off | cross-off | cross-off | cross-off | cross-on |
High Tide | 7:13AM4.53m | 7:25PM4.79m | 7:43AM4.60m | 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 | |||||||
Low Tide | 1:47PM-0.03m | 2:08AM-0.14m | 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 | ||||||||
6:30 | — | — | 6:31 | — | — | 6:33 | — | — | 6:33 | — | — | 6:35 | — | — | 6:37 | — | — | 6:39 | — | — | |
— | 8:08 | — | — | 8:07 | — | — | 8:04 | — | — | 8:01 | — | — | 8:00 | — | — | 7:58 | — | — | 7:55 | — | |
mm | 1 | 6 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 18 | 18 | 16 | 16 | 17 | 16 | 18 | 19 | 17 | 19 | 19 | 18 | 20 | 20 | 18 | 18 | 17 | 16 | 16 | 16 | 15 |
Feels °C | 14 | 12 | 10 | 11 | 12 | 15 | 15 | 17 | 14 | 15 | 16 | 15 | 17 | 16 | 15 | 11 | 10 | 11 | 13 | 13 | 13 |
Swell 1 Height (m) Direction Period (s) | WSW 8 | W 10 | SSW 6 | WSW 11 | SSW 7 | SSW 6 | SW 6 | S 17 | S 16 | S 16 | S 15 | S 15 | SSW 5 | S 5 | W 10 | WSW 11 | WSW 12 | SW 6 | W 11 | W 10 | S 4 |
14 | 2 | 43 | 75 | 26 | 16 | 9 | 6 | 5 | 5 | 5 | 4 | 27 | 11 | 9 | 23 | 27 | 9 | 9 | 2 | 2 | |
Swell 2 Height (m) Direction Period (s) | — | — | SW 9 | SSW 7 | WSW 11 | WSW 10 | W 10 | S 17 | W 8 | — | — | — | SW 6 | SSW 15 | SW 15 | SW 14 | SW 14 | WSW 12 | S 14 | S 13 | WSW 5 |
— | — | 95 | 35 | 44 | 10 | 2 | 6 | 1 | — | — | — | 10 | 23 | 9 | 8 | 8 | 14 | 4 | 3 | 2 | |
Swell 3 Height (m) Direction Period (s) | — | — | WSW 11 | — | — | — | S 18 | — | — | — | — | — | WSW 8 | W 10 | — | — | — | SW 14 | — | — | SW 4 |
— | — | 24 | — | — | — | 6 | — | — | — | — | — | 13 | 2 | — | — | — | 8 | — | — | 1 | |
Wind waves Height (m) Direction Period (s) | SSW 7 | SSW 7 | W 3 | WNW 3 | NW 3 | — | — | SW 6 | SW 5 | SW 4 | SSW 5 | SSW 5 | W 3 | WSW 6 | SW 5 | WSW 3 | W 3 | — | SW 3 | SW 4 | — |
76 | 142 | 6 | 4 | 2 | — | — | 8 | 6 | 20 | 39 | 47 | 1 | 31 | 30 | 11 | 11 | — | 7 | 11 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 365 | 516 | 165 | 135 | 153 | 27 | 27 | 178 | 191 | 270 | 187 | 218 | 31 | 31 | 737 | 533 | 210 | 209 | 43 | 27 | 26 |
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.











