Surf Forecasts:
St Agnes surf forecast from 23 Aug 2026:
- Best quality surf: Thursday 27 Aug, 10PM (local time) - 5ft (1.5m), 8s period, SSW swell with offshore winds.
- Most powerful swell: Friday 28 Aug, 10PM (local time) - 10ft (3.0m), 9s period, W swell with 1,541 kJ wave energy.
- Next surfable swell (1★+): Sunday 23 Aug, 10AM (local time) - 1.5ft (0.4m), 14s period with SW 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 Sunday (Aug 23) at 10AM. The primary swell is predicted to be 0.4m and 14s 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 3.0m 9s and forecast to arrive on Friday (Aug 28) 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 1.7m 7s period and expected on Tuesday (Aug 25) at 10AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Sun 23rd Aug) | 1.5ft (0.4m) 14s |
| Best Surf | 10PM (Thu 27th Aug) | 5ft (1.5m) 8s |
| Most Powerful | 10PM (Fri 28th Aug) | 10ft (3.0m) 9s |
Table - best surf conditions forecast for St Agnes over the next 16 days.
The Lowdown
Right then, let’s have a look at what’s on offer for St Agnes over the next couple of weeks. To be fair, it’s a quiet start. The first real chance of anything rideable isn’t until early next week, with a real lull in the surf for several days before that.
We finally see a small pulse of swell arriving on the Monday morning of the 31st of August. It’s only 3 ft from the WSW, with a short 8-second period. Combined energy is only moderate at 154. Winds are light and cross-off, so it’ll be clean, but it’s tiny and weak. Later that afternoon is a nice little window with a glassy 2 ft from the west, thanks to a complete drop in the wind. You’ll get a few little runners but don’t expect much.
The first proper standout comes on Thursday the 3rd of September. The morning session is where it's at. We’ve got a clean 5 ft swell from the west, with a 7-second period. That combined swell energy hits 319, so there’s some moderate push behind it. What makes this special is the light southerly breeze, giving you clean, offshore conditions. It’s not giant, but for quality and shape, this is your pick.
Friday morning the 4th of September is also worth a mention. Another 5 ft from the west, but the period stretches to 9 seconds which will give you a bit more power and shape. Combined energy sits at 454. The gentle cross-off breeze from the south keeps things clean. This is another solid session.
After that, it gets a bit messy. There’s a lot of wind and choppy conditions through the weekend and into the following week. The water temp at St Agnes is about average for the time of year.
So, for the standout, I’m calling Thursday morning, the 3rd of September. The clean, offshore wind and that moderate, consistent swell will give you the best waves.
Rusty.
Short Range ForecastSome drizzle, heaviest during Tue morning. Warm (max 21°C on Tue morning, min 15°C on Sat night). Winds increasing (light winds from the E on Sun morning, fresh winds from the E by Sun night). | Days 4-6 Weather SummaryLight rain (total 7mm), mostly falling on Wed afternoon. Warm (max 22°C on Wed morning, min 15°C on Thu night). Winds decreasing (fresh winds from the SSE on Wed night, calm by Thu night). | ||||||||||||||||||||
Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | |||||||||||||||
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 14 | SW 14 | SW 14 | SW 14 | SW 13 | WNW 11 | WNW 10 | WNW 10 | W 9 | W 8 | W 8 | SSW 7 | SSW 8 | SSW 8 | WSW 9 | S 10 | SSW 8 | W 9 | W 7 | W 7 | W 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 51 | 54 | 38 | 31 | 28 | 25 | 58 | 75 | 59 | 50 | 32 | 286 | 352 | 488 | 237 | 377 | 217 | 1312 | 569 | 449 | 422 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | off | off | cross-off | cross-off | cross-off | cross-on | cross-on | cross-on | cross-on | cross-on | cross |
High Tide | 2:47PM4.35m | 3:25AM4.40m | 3:52PM4.70m | 4:18AM4.77m | 4:39PM5.13m | 4:59AM5.18m | 5:16PM5.57m | 5:34AM5.56m | 5:50PM5.96m | 6:07AM5.90m | 6:22PM6.27m | 6:39AM6.16m | 6:54PM6.48m | ||||||||
Low Tide | 8:32AM2.35m | 9:20PM2.18m | 9:47AM2.05m | 10:19PM1.81m | 10:37AM1.64m | 11:02PM1.39m | 11:16AM1.23m | 11:39PM0.98m | 11:50AM0.85m | 00:12AM0.64m | 12:23PM0.55m | 00:44AM0.38m | 12:55PM0.34m | 1:15AM0.22m | |||||||
 | |  |  |  | |  | | | | | |  | |  | | |  | | | | |
 | 6:20 | — | — | 6:22 | — | — | 6:22 | — | — | 6:24 | — | — | 6:26 | — | — | 6:28 | — | — | 6:28 | — | — |
 | — | 8:24 | — | — | 8:22 | — | — | 8:21 | — | — | 8:19 | — | — | 8:16 | — | — | 8:15 | — | — | 8:13 | — |
mm | — | — | — | — | — | — | 1 | — | — | — | 2 | — | 3 | 1 | — | 1 | — | 6 | 1 | — | — |
Temp °C | 19 | 20 | 17 | 19 | 20 | 19 | 21 | 20 | 17 | 22 | 22 | 17 | 19 | 19 | 15 | 17 | 18 | 16 | 18 | 18 | 17 |
Feels °C | 16 | 17 | 15 | 13 | 14 | 14 | 16 | 16 | 16 | 19 | 18 | 13 | 15 | 14 | 13 | 16 | 16 | 11 | 12 | 11 | 12 |
Swell 1 Height (m) Direction Period (s) | N 5 | N 4 | WSW 10 | SW 14 | SW 13 | SE 7 | WNW 10 | WNW 10 | W 9 | SSW 4 | W 8 | SSW 7 | W 8 | WNW 11 | SSW 8 | S 10 | SSW 8 | — | — | — | S 11 |
| kJ | 16 | 6 | 38 | 31 | 28 | 25 | 58 | 75 | 59 | 15 | 32 | 286 | 19 | 65 | 196 | 377 | 217 | — | — | — | 2 |
Swell 2 Height (m) Direction Period (s) | SW 14 | WSW 12 | SE 6 | SW 9 | W 9 | WNW 11 | ESE 7 | SW 8 | SW 8 | W 8 | N 5 | WNW 8 | WNW 11 | WSW 9 | WSW 9 | SW 9 | ESE 6 | — | — | — | — |
| kJ | 51 | 54 | 11 | 13 | 6 | 25 | 19 | 35 | 32 | 50 | 2 | 19 | 12 | 49 | 237 | 287 | 13 | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | W 9 | SW 14 | SW 14 | N 4 | SW 9 | SSW 13 | NNE 5 | NNE 5 | NNE 5 | SSW 7 | SW 12 | SW 12 | — | W 11 | WNW 10 | W 9 | — | — | — | — | — |
| kJ | 14 | 49 | 32 | 1 | 3 | 17 | 7 | 8 | 2 | 21 | 6 | 6 | — | 58 | 56 | 41 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | E 4 | ESE 5 | NNE 4 | ESE 7 | ESE 8 | NE 3 | E 7 | ESE 3 | SSE 3 | SSE 4 | S 4 | — | SSW 8 | SSW 8 | — | — | W 6 | W 9 | W 7 | W 7 | W 7 |
| kJ | 7 | 26 | 5 | 82 | 94 | 3 | 302 | 7 | 1 | 4 | 33 | — | 352 | 488 | — | — | 214 | 1312 | 569 | 449 | 422 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 1 | 5 | 384 | 198 | 198 | 10 | 16 | 0 | 0 | 399 | 98 | 38 | 15 | 1 | 21 | 21 | 155 | 560 | 213 | 213 |
Best forecast wave conditions in North Cornwall | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
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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.
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