Surf Forecasts:
St Agnes surf forecast from 25 Aug 2026:
- Best quality surf: Tuesday 25 Aug, 10PM (local time) - 2ft (0.6m), 10s period, W swell with offshore winds.
- Most powerful swell: Tuesday 1 Sep, 1PM (local time) - 10ft (3.0m), 10s period, WSW swell with 1,852 kJ wave energy.
- Next surfable swell (1★+): Tuesday 25 Aug, 10PM (local time) - 2ft (0.6m), 10s period with W 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 10PM. The primary swell is predicted to be 0.6m and 10s period with a secondary swell of 0.5m and 8s. 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 3.0m 10s and forecast to arrive on Tuesday (Sep 01) at 1PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 6s period and expected on Thursday (Aug 27) at 10AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Tue 25th Aug) | 2ft (0.6m) 10s |
| Best Surf | 10PM (Tue 25th Aug) | 2ft (0.6m) 10s |
| Most Powerful | 1PM (Tue 1st Sep) | 10ft (3.0m) 10s |
Table - best surf conditions forecast for St Agnes over the next 16 days.
The Lowdown
Alright folks, Rusty here, let's get stuck into what's on the menu for the next couple of weeks around St Agnes.
First up, the water temp is sitting at 64°, which is a touch warmer than normal for this time of year. The immediate outlook? Well, it's a bit of a slow cooker. We've got a few days of small, clean surf but nothing to really fire the jets over. The best of the early action looks to be on Wednesday, the 26th of August, in the morning. We'll see a clean 2 ft swell from the west with a gentle offshore wind from the south to keep things tidy. The energy is a bit weak (70), but it's rideable. It's a morning session for the patient ones, but it's not going to be a classic.
The real standout, the one you want to mark on the calendar, is shaping up for Tuesday, the 8th of September. The morning of the 8th is looking like the pick of the entire forecast. We've got a clean 5 ft swell from the west (combined energy of 373), and the wind is a light, almost glassy cross-off from the south. That's a recipe for some proper, clean waves. If you can get out that morning, do it. It's the best window by a long way.
The second week also has a couple of feature days for the experts. Check out the 9th of September. We're looking at a solid 8 ft groundswell from the west with a 11-second period. That's a lot of power (combined energy of 1756). The wind is a cross-shore, so it won't be silky, but for the big-wave chargers, that's got some serious potential. That's an expert-only zone though.
Between now and then, the forecast is a bit of a mixed bag with a lot of poor conditions. We'll see a few days of moderate to strong winds and some lumpy, cross-shore chop. On the 5th of September, we've got a big 10 ft west-southwest swell coming in, but the wind is onshore and messy. For the paddle surfers, it's a write-off, but honestly, that setup looks more interesting for the kite crew.
Overall, don't get too excited about the next week. Bide your time, and point your board towards the 8th of September.
Rusty.
Short Range ForecastModerate rain (total 11mm), heaviest on Wed night. Warm (max 22°C on Wed morning, min 16°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 5mm), mostly falling on Fri night. Warm (max 20°C on Fri morning, min 15°C on Sun night). Winds increasing (light winds from the NNW on Fri morning, strong winds from the W by Sun night). | ||||||||||||||||||||
Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | |||||||||||||||
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) | WNW 10 | WNW 10 | W 9 | W 8 | W 8 | W 8 | WNW 10 | SW 7 | SSW 7 | SW 7 | SSW 7 | WSW 6 | WSW 7 | WSW 8 | W 9 | W 9 | WSW 7 | W 8 | W 8 | W 8 | WSW 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 57 | 75 | 59 | 49 | 31 | 28 | 10 | 211 | 101 | 194 | 110 | 182 | 456 | 557 | 1172 | 413 | 418 | 1342 | 732 | 628 | 420 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | off | off | off | cross-off | cross-off | cross-off | off | off | cross-on | cross-off | cross | cross | cross | cross-off | cross | cross-on | cross-on | cross-on | cross-on |
High Tide | 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 | 7:44AM6.37m | 8:01PM6.51m | ||||||||
Low Tide | 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 | 1:59PM0.27m | 2:20AM0.30m | |||||||
 |  |  |  | |  |  | | | | | |  | |  | |  | | | |  | |
 | 6:22 | — | — | 6:24 | — | — | 6:26 | — | — | 6:28 | — | — | 6:28 | — | — | 6:31 | — | — | 6:31 | — | — |
 | — | 8:21 | — | — | 8:19 | — | — | 8:16 | — | — | 8:15 | — | — | 8:13 | — | — | 8:09 | — | — | 8:07 | — |
mm | 1 | 1 | — | — | — | 9 | — | — | — | — | — | 4 | — | — | — | — | 1 | — | — | 1 | — |
Temp °C | 20 | 20 | 17 | 22 | 22 | 18 | 19 | 20 | 17 | 20 | 19 | 18 | 19 | 19 | 17 | 19 | 18 | 16 | 17 | 17 | 16 |
Feels °C | 17 | 18 | 17 | 21 | 21 | 17 | 15 | 16 | 16 | 20 | 16 | 16 | 14 | 14 | 13 | 13 | 12 | 11 | 11 | 12 | 12 |
Swell 1 Height (m) Direction Period (s) | WNW 10 | WNW 10 | W 9 | W 8 | W 8 | W 8 | WNW 10 | WNW 10 | SSW 7 | SW 7 | SSW 7 | — | S 8 | — | W 9 | W 9 | — | — | W 8 | W 8 | N 5 |
| kJ | 57 | 75 | 59 | 49 | 31 | 28 | 10 | 31 | 101 | 194 | 110 | — | 5 | — | 1172 | 413 | — | — | 732 | 516 | 2 |
Swell 2 Height (m) Direction Period (s) | SE 7 | SW 8 | SW 8 | SW 7 | SSW 7 | SSW 6 | SW 12 | SW 12 | WSW 7 | WNW 9 | W 8 | — | — | — | — | — | — | — | — | — | S 18 |
| kJ | 24 | 35 | 32 | 14 | 10 | 8 | 6 | 6 | 68 | 26 | 34 | — | — | — | — | — | — | — | — | — | 6 |
Swell 3 Height (m) Direction Period (s) | SW 9 | NNE 5 | NNE 4 | NNW 5 | N 4 | S 4 | SW 12 | S 12 | WNW 9 | — | SW 12 | — | — | — | — | — | — | — | — | — | — |
| kJ | 19 | 4 | 1 | 7 | 4 | 1 | 6 | 3 | 28 | — | 5 | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NNE 5 | SE 6 | — | SSE 4 | SSE 4 | ESE 3 | SW 6 | SW 7 | — | — | — | WSW 6 | WSW 7 | WSW 8 | — | SSW 7 | WSW 7 | W 8 | — | W 8 | WSW 7 |
| kJ | 13 | 9 | — | 3 | 5 | 5 | 131 | 211 | — | — | — | 182 | 456 | 557 | — | 68 | 418 | 1342 | — | 628 | 420 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 10 | 1 | 0 | 0 | 78 | 384 | 254 | 15 | 0 | 0 | 56 | 213 | 254 | 231 | 15 | 20 | 247 | 744 | 495 | 508 | 155 |
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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