
Surf Forecasts:
St Agnes surf forecast from 3 Aug 2026:
- Best quality surf: Monday 3 Aug, 4AM (local time) - 2.5ft (0.8m), 9s period, WSW swell with cross-offshore winds.
- Most powerful swell: Wednesday 5 Aug, 10AM (local time) - 7ft (2.2m), 8s period, W swell with 634 kJ wave energy.
- Next surfable swell (1★+): Monday 3 Aug, 4AM (local time) - 2.5ft (0.8m), 9s period with WSW swell.
Best Forecast Surf Conditions for St Agnes this week:
The surf forecast for St Agnes over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Aug 03) at 4AM. The primary swell is predicted to be 0.8m and 9s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at St Agnes in the next 16 days are 2.2m 8s and forecast to arrive on Wednesday (Aug 05) at 10AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Monday (Aug 03) at 10PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Mon 3rd Aug) | 2.5ft (0.8m) 9s |
| Best Surf | 4AM (Mon 3rd Aug) | 2.5ft (0.8m) 9s |
| Most Powerful | 10AM (Wed 5th Aug) | 7ft (2.2m) 8s |
Table - best surf conditions forecast for St Agnes over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s break down what we’ve got coming for the next couple of weeks.
The first thing you need to know is that it’s going to be a slow start. There’s a little lump of swell on Sunday the 2nd – maybe a foot – but it’s weak and poor. Not worth stressing about. Then we step into a few days of pretty ordinary surf. Monday the 3rd sees a small bump to around 3ft, but it’s nothing to write home about.
The middle of the week, from Tuesday the 4th through Friday the 7th, is where it gets rough. The swell does fill in, with waves pushing up to 5-7ft on Wednesday. But that’s coming with a strong, gusty westerly wind that’s going to chop it all to bits. All that energy – and we are talking some strong readings pushing into the 600s – will be wasted. It’s going to be a messy, blown-out mess. Honestly, with that wind and poor quality, this looks like a better bet for the kite crew than for us surfers. The rest of that week just stays small and windblown.
We’re looking at a real dry spell from the 4th right up until the 15th. That’s a long stretch of not much. Then, finally, on Saturday the 15th, we get a pulse of life. Swell builds back to 5ft from the west with moderate energy. It’s not perfect – there’s still some cross-onshore wind – but it’s the first sign of something real.
Now, for the absolute standout: Sunday morning, the 16th of August. This is the day. We’ve got a clean 5ft of westerly swell, with good energy behind it. But the headline is the wind. It’s glassy – a light, off-shore easterly. After so much wind, this will be a treat. St Agnes (Cornwall) should be clean, hollow, and holding the west swell really well. The direction is just about perfect for it. This is far and away the best morning on offer in this whole window. It’s a long way out, so treat it as promising rather than guaranteed, but it’s definitely the one to aim for.
Water temp is running a touch warmer than the seasonal average, so you might get away with your smaller suit.
The run continues into Monday the 17th with similar 5-6ft waves from the west-northwest, but the wind swings back onshore, so it won't be as clean. That Sunday, though, is the one you want to be in the water for.
Rusty, out.
Short Range ForecastMostly dry. Warm (max 23°C on Mon morning, min 16°C on Sun night). Winds increasing (calm on Sun night, fresh winds from the WSW by Tue night). | Days 5-7 Weather SummarySome drizzle, heaviest during Sat morning. Very mild (max 18°C on Wed afternoon, min 16°C on Wed night). Winds decreasing (fresh winds from the WNW on Wed afternoon, light winds from the W by Thu night). | |||||||||||||||||||
Sun 2 | Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | ||||||||||||||
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 | WSW 9 | WSW 9 | WSW 8 | SW 8 | SW 7 | SW 7 | WSW 7 | W 8 | W 7 | W 7 | WNW 6 | WNW 6 | W 6 | WNW 5 | WNW 5 | WNW 6 | WNW 7 | WNW 7 | WNW 8 |
Wave Graph | ||||||||||||||||||||
18 | 103 | 106 | 80 | 147 | 205 | 195 | 362 | 634 | 389 | 270 | 139 | 77 | 32 | 29 | 31 | 101 | 255 | 210 | 197 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | glassy | off | cross-off | cross-off | cross-off | cross-off | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-on | cross-on |
High Tide | 8:29PM6.20m | 8:47AM5.91m | 9:05PM6.07m | 9:25AM5.77m | 9:45PM5.85m | 10:08AM5.55m | 10:32PM5.55m | 11:00AM5.27m | 11:30PM5.22m | 12:05PM5.02m | 00:44AM4.96m | 1:26PM4.93m | 2:09AM4.95m | |||||||
Low Tide | 2:50AM0.60m | 3:02PM0.71m | 3:25AM0.75m | 3:39PM0.89m | 4:05AM0.97m | 4:23PM1.14m | 4:52AM1.25m | 5:17PM1.42m | 5:53AM1.54m | 6:29PM1.65m | 7:13AM1.71m | 7:59PM1.68m | ||||||||
— | — | 5:50 | — | — | 5:52 | — | — | 5:54 | — | — | 5:54 | — | — | 5:56 | — | — | 5:58 | — | — | |
— | 9:02 | — | — | 9:01 | — | — | 9:00 | — | 8:59 | — | — | 8:57 | — | — | 8:54 | — | — | 8:52 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | — |
Temp °C | 20 | 17 | 23 | 23 | 19 | 22 | 21 | 18 | 18 | 18 | 16 | 17 | 17 | 16 | 18 | 18 | 17 | 18 | 18 | 17 |
Feels °C | 18 | 16 | 22 | 21 | 18 | 18 | 16 | 14 | 12 | 12 | 11 | 13 | 14 | 14 | 14 | 14 | 16 | 14 | 14 | 16 |
Swell 1 Height (m) Direction Period (s) | SW 8 | WSW 9 | WSW 9 | WSW 8 | SW 8 | SW 15 | SW 15 | SW 14 | SW 13 | SW 13 | SW 13 | WNW 6 | WNW 6 | W 6 | WNW 5 | W 9 | SW 11 | SW 13 | SW 13 | WNW 8 |
17 | 103 | 106 | 80 | 147 | 8 | 8 | 8 | 7 | 7 | 7 | 139 | 77 | 32 | 29 | 15 | 5 | 7 | 7 | 197 | |
Swell 2 Height (m) Direction Period (s) | W 10 | E 3 | — | N 5 | N 4 | — | — | — | SW 13 | S 18 | W 11 | W 10 | W 10 | W 10 | W 9 | SW 12 | SW 11 | SW 11 | SW 11 | N 4 |
18 | 1 | — | 2 | 2 | — | — | — | 7 | 6 | 2 | 18 | 17 | 17 | 15 | 6 | 5 | 5 | 5 | 3 | |
Swell 3 Height (m) Direction Period (s) | W 8 | — | — | E 7 | S 15 | — | — | — | — | — | — | SW 12 | SW 12 | N 4 | W 6 | — | — | — | SW 6 | SW 12 |
5 | — | — | 4 | 4 | — | — | — | — | — | — | 6 | 6 | 3 | 3 | — | — | — | 2 | 6 | |
Wind waves Height (m) Direction Period (s) | ESE 4 | — | — | — | — | SW 7 | SW 7 | WSW 7 | W 8 | W 7 | W 7 | — | — | — | — | WNW 5 | WNW 6 | WNW 7 | WNW 7 | — |
2 | — | — | — | — | 205 | 195 | 362 | 634 | 389 | 270 | — | — | — | — | 31 | 101 | 255 | 210 | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 27 | 0 | 0 | 0 | 16 | 506 | 208 | 231 | 222 | 213 | 222 | 222 | 21 | 81 | 499 | 495 | 38 | 15 | 211 | 28 |
Best forecast wave conditions in North Cornwall | ||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
Latest Updates
Information about the St Agnes Surf forecast
The above surf forecast table for St Agnes provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at St Agnes can be found by selecting the local surf guide option on the grey menu. Our St Agnes 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 (St Agnes) 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 St Agnes 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.
St Agnes is 13 km (8 miles) from Camborne. If you plan a holiday in North Cornwall, look for hotels and other accommodation in Camborne. Camborne has rooms for a wide range of budgets as well as car hire and transport links.











