Surf Forecasts:
St Agnes surf forecast from 24 Aug 2026:
- Best quality surf: Sunday 30 Aug, 10PM (local time) - 11ft (3.5m), 9s period, WSW swell with cross-offshore winds.
- Most powerful swell: Monday 31 Aug, 4AM (local time) - 11ft (3.5m), 10s period, W swell with 2,702 kJ wave energy.
- Next surfable swell (1★+): Tuesday 25 Aug, 7PM (local time) - 2ft (0.6m), 10s period with WNW 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 Tuesday (Aug 25) at 7PM. The primary swell is predicted to be 0.6m and 10s period with a secondary swell of 0.5m and 8s. Another secondary swell of 0.3m and 5s is also forecast. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at St Agnes in the next 16 days are 3.5m 10s and forecast to arrive on Monday (Aug 31) at 4AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 7s period and expected on Tuesday (Aug 25) at 10AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7PM (Tue 25th Aug) | 2ft (0.6m) 10s |
| Best Surf | 10PM (Sun 30th Aug) | 11ft (3.5m) 9s |
| Most Powerful | 4AM (Mon 31st Aug) | 11ft (3.5m) 10s |
Table - best surf conditions forecast for St Agnes over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s call it like it is: this forecast for St Agnes is a real bummer. The next 16 days are full of wind and messy seas, making it a proper grind to find anything decent. There’s a big stretch of poor surf right at the start, and even when the ocean gets fired up later, the wind just won’t play ball.
Your first real shot at a wave is Wednesday, 26 August. Even then, it’s nothing special. You’re looking at a tiny 2ft swell from the west with a weak, short 8-second period. The combined energy is a measly 66. The morning has a cross-off breeze, so it’s clean, but the wave quality is just average. It’s a chance to get out, but it’s no standout.
Thursday, 27 August morning is a bit better. The swell picks up to about 5ft from the southwest, but the period is still a short 7 seconds, so it’s a bit of a windswell. The energy jumps to 210 (moderate). The big plus is a gentle offshore wind from the SSE, making it clean. This is the best you’ll see in the first week, but it’s still just surfable, not epic.
The big juice starts pouring in from Sunday, 31 August, but it’s all blown to bits. An 12ft swell from the west on Monday the 31st with a 10-second period and a strong cross-on wind means ugly, choppy conditions. The energy is a huge 2363, so there’s power, but it’s a total mess for a paddle surfer. This setup, with the strong cross-shore wind, is a better bet for kite surfing than a traditional surfboard.
The second week is even more powerful, but the wind is still the enemy. On Monday, 7 September, you get a massive 16ft swell from the west with a super long 17-second period. The energy is a staggering 13928 – that’s serious, deep ocean groundswell. This is a wave that would be a dream on a reef or point, but at St Agnes with a cross-on wind, it’s going to be a heavy, straight-shooting mess. It’s only for the experts. The long period will make it break fast and hard.
The water is sitting at 64°, which is a touch warmer than usual for this time of year, so you might not need a full winter wetsuit yet.
Bottom line: if you want clean, lined-up waves, you’re in for a long wait. The only real standout is the morning of Thursday, 27 August, with 5ft swell and clean offshore wind. That’s your window. Everything else is either tiny, messy, or so big and blown out it’s only for the hardcore. It’s a quiet spell, but forecasts can always change.
Rusty.
Short Range ForecastLight rain (total 7mm), mostly falling on Wed night. Warm (max 21°C on Wed morning, min 16°C on Mon night). Winds decreasing (fresh winds from the E on Mon morning, light winds from the SE by Wed afternoon). | Days 4-6 Weather SummaryLight rain (total 6mm), mostly falling on Sat morning. Warm (max 20°C on Thu morning, min 15°C on Thu night). Winds increasing (light winds from the ESE on Fri morning, fresh winds from the WSW by Sat afternoon). | ||||||||||||||||||||
Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | |||||||||||||||
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 13 | WNW 11 | WNW 10 | WNW 10 | W 9 | W 8 | W 8 | S 7 | SW 7 | SW 7 | WSW 8 | SSW 7 | W 6 | W 8 | WNW 6 | WSW 6 | SSW 7 | WSW 6 | WSW 7 | WSW 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 31 | 28 | 25 | 57 | 75 | 59 | 49 | 32 | 24 | 194 | 184 | 245 | 121 | 225 | 531 | 68 | 119 | 96 | 109 | 342 | 2510 |
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 | off | cross-off | off | off | off | cross-off | cross-off | cross-off | on | cross | cross-off | cross | cross | cross-off | cross-off | cross |
High Tide | 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 | 7:11AM6.32m | 7:27PM6.57m | ||||||||
Low Tide | 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 | 1:27PM0.24m | 1:47AM0.20m | ||||||||
 | |  |  | | | | |  | | |  | |  | |  |  | | |  |  | |
 | 6:22 | — | — | 6:22 | — | — | 6:24 | — | — | 6:26 | — | — | 6:28 | — | — | 6:28 | — | — | 6:31 | — | — |
 | — | 8:22 | — | — | 8:21 | — | — | 8:19 | — | — | 8:16 | — | — | 8:15 | — | — | 8:13 | — | — | 8:09 | — |
mm | — | — | — | — | — | — | — | — | 7 | — | — | — | — | — | — | 4 | 2 | — | 1 | 1 | 1 |
Temp °C | 20 | 20 | 18 | 20 | 20 | 17 | 21 | 21 | 17 | 20 | 20 | 16 | 19 | 19 | 16 | 18 | 19 | 17 | 19 | 18 | 16 |
Feels °C | 14 | 14 | 14 | 16 | 16 | 16 | 20 | 20 | 16 | 17 | 16 | 15 | 16 | 16 | 14 | 15 | 14 | 14 | 15 | 12 | 11 |
Swell 1 Height (m) Direction Period (s) | N 4 | SW 13 | SE 7 | WNW 10 | WNW 10 | W 9 | W 8 | W 8 | S 7 | SW 7 | SW 7 | WSW 8 | SSW 7 | SW 11 | S 11 | WNW 6 | N 5 | SSW 7 | WSW 6 | W 12 | — |
| kJ | 3 | 28 | 23 | 57 | 75 | 59 | 49 | 32 | 24 | 194 | 184 | 245 | 121 | 5 | 2 | 68 | 2 | 96 | 109 | 11 | — |
Swell 2 Height (m) Direction Period (s) | SW 14 | NNE 4 | WNW 11 | N 5 | SW 8 | SW 8 | SW 7 | SSW 7 | W 8 | WNW 10 | WNW 10 | WNW 10 | WSW 7 | SW 11 | — | N 5 | S 11 | WNW 6 | W 13 | — | — |
| kJ | 31 | 2 | 25 | 12 | 35 | 32 | 14 | 10 | 18 | 10 | 31 | 32 | 94 | 5 | — | 7 | 2 | 38 | 3 | — | — |
Swell 3 Height (m) Direction Period (s) | WSW 9 | W 9 | SSW 13 | SE 7 | SE 6 | N 4 | NNW 4 | N 4 | SW 12 | SW 12 | SW 12 | E 4 | WNW 9 | — | — | SW 11 | — | W 6 | W 9 | — | — |
| kJ | 8 | 6 | 17 | 12 | 9 | 5 | 3 | 1 | 6 | 6 | 6 | 2 | 26 | — | — | 5 | — | 20 | 2 | — | — |
Wind waves Height (m) Direction Period (s) | ESE 7 | ESE 7 | NE 5 | E 7 | NNE 5 | — | — | SSE 2 | ESE 3 | ESE 4 | — | SSW 7 | — | W 6 | W 8 | SW 6 | WSW 6 | — | S 4 | WSW 7 | WSW 10 |
| kJ | 79 | 81 | 8 | 230 | 4 | — | — | 1 | 2 | 11 | — | 99 | — | 225 | 531 | 32 | 119 | — | 16 | 342 | 2510 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 384 | 284 | 224 | 6 | 1 | 0 | 0 | 78 | 254 | 0 | 15 | 0 | 0 | 56 | 56 | 22 | 272 | 198 | 21 | 495 | 509 |
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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