Surf Forecasts:
St Agnes surf forecast from 10 Aug 2026:
- Best quality surf: Tuesday 11 Aug, 10PM (local time) - 1.5ft (0.5m), 11s period, W swell with glassy winds.
- Most powerful swell: Thursday 13 Aug, 10AM (local time) - 4ft (1.2m), 11s period, W swell with 319 kJ wave energy.
- Next surfable swell (1★+): Tuesday 11 Aug, 10PM (local time) - 1.5ft (0.5m), 11s 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 11) at 10PM. The primary swell is predicted to be 0.5m and 11s period with a secondary swell of 0.3m and 7s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at St Agnes in the next 16 days are 1.2m 11s and forecast to arrive on Thursday (Aug 13) at 10AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 6s period and expected on Wednesday (Aug 12) at 1PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Tue 11th Aug) | 1.5ft (0.5m) 11s |
| Best Surf | 10PM (Tue 11th Aug) | 1.5ft (0.5m) 11s |
| Most Powerful | 10AM (Thu 13th Aug) | 4ft (1.2m) 11s |
Table - best surf conditions forecast for St Agnes over the next 16 days.
The Lowdown
Alright folks, Rusty here, with a look at what we’ve got on the horizon.
To be straight with you, the next couple of weeks at St Agnes are looking pretty flat and frustrating. There’s a real drought of decent surf coming up. We’re talking from now right through to Friday the 21st of August, the reports are all “poor surf conditions” with scores you wouldn’t want to post on the board. That’s over a week with nothing worth paddling out for.
The swell that does show is weak, with combined energies mostly under 200 (moderate at best). There’s often onshore or cross-onshore wind messing it up. Even when we get a bit of height, like around 4ft on the morning of Thursday the 13th, the wind is straight onshore and it’s just a lumpy mess with moderate wave energy (324).
The first glimmer of anything worthwhile doesn’t come until the afternoon of Friday the 21st. It’s only 2ft from the west at a 10-second period, but the wind swings to a light cross-off from the southeast, cleaning it right up. It’s a small, clean wave with moderate energy (168) – more of a longboard fun-size than anything to get excited about.
Then Saturday the 22nd looks similar. A little 2ft west swell in the morning with a clean cross-off breeze (ESE), and again in the afternoon with a light offshore from the SSE and clean conditions. Energy is low (103 and 62), but it’d be glassy and pretty. For a patient surfer on a log, these are the only windows in the whole 16-day run.
Looking way down the track to Tuesday the 25th of August, we see a bump in size – 5ft from the west-southwest with an 8-second period and moderate energy (362). The wind is light and cross-shore from the northeast. It’s still only rated as marginal, and it’s so far out I’d take that prediction with a pinch of salt, but it’s something to keep an eye on.
Overall, it’s a tough run. St Agnes is fairly exposed to the west-southwest, which is fine, but this pattern just isn’t delivering. Hang tight, the forecast can always change.
- Rusty
Short Range ForecastMostly dry. Warm (max 25°C on Wed morning, min 16°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 21°C on Thu morning, min 16°C on Sat afternoon). Mainly fresh winds. | ||||||||||||||||||||
Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | |||||||||||||||
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) | NW 5 | WNW 8 | W 8 | WNW 8 | WNW 7 | W 11 | W 10 | W 9 | W 9 | W 11 | W 10 | W 10 | W 9 | WNW 9 | W 8 | W 8 | W 8 | W 8 | N 5 | N 6 | N 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 41 | 22 | 33 | 19 | 18 | 85 | 125 | 136 | 180 | 319 | 239 | 181 | 230 | 232 | 135 | 100 | 72 | 55 | 33 | 39 | 50 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | off | cross-off | cross-off | cross-on | cross-on | cross-on | on | on | cross-on | on | on | on | cross-on | on | cross-on | cross-on | on | on |
High Tide | 4:00PM5.54m | 4:32AM5.62m | 4:57PM6.03m | 5:25AM6.02m | 5:47PM6.47m | 6:11AM6.33m | 6:31PM6.76m | 6:54AM6.50m | 7:13PM6.86m | 7:34AM6.51m | 7:53PM6.76m | 8:13AM6.37m | 8:31PM6.49m | ||||||||
Low Tide | 9:58AM1.29m | 10:34PM0.96m | 10:59AM0.85m | 11:30PM0.50m | 11:49AM0.44m | 00:17AM0.14m | 12:34PM0.15m | 1:00AM-0.06m | 1:15PM0.01m | 1:40AM-0.08m | 1:54PM0.05m | 2:18AM0.07m | 2:31PM0.25m | 2:54AM0.38m | |||||||
 | |  | | | | | | | | |  | | | | | | | | | | |
 | 6:01 | — | — | 6:01 | — | — | 6:03 | — | — | 6:05 | — | — | 6:07 | — | — | 6:07 | — | — | 6:09 | — | — |
 | — | 8:50 | — | — | 8:47 | — | — | 8:45 | — | — | 8:44 | — | — | 8:43 | — | — | 8:40 | — | — | 8:38 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 17 | 18 | 18 | 23 | 23 | 20 | 25 | 25 | 20 | 21 | 21 | 19 | 18 | 17 | 17 | 18 | 17 | 16 | 16 | 16 | 16 |
Feels °C | 15 | 15 | 16 | 21 | 20 | 19 | 22 | 22 | 19 | 20 | 20 | 19 | 16 | 14 | 15 | 14 | 12 | 11 | 12 | 12 | 14 |
Swell 1 Height (m) Direction Period (s) | NW 5 | WNW 5 | W 8 | WNW 8 | WNW 7 | W 11 | W 10 | W 9 | W 9 | W 11 | W 10 | W 10 | W 9 | WNW 9 | W 8 | W 8 | W 8 | W 8 | W 7 | W 7 | W 7 |
| kJ | 41 | 10 | 33 | 19 | 18 | 85 | 125 | 136 | 180 | 319 | 239 | 181 | 230 | 232 | 135 | 100 | 72 | 55 | 27 | 25 | 4 |
Swell 2 Height (m) Direction Period (s) | SW 6 | WNW 8 | N 4 | SW 6 | W 9 | WNW 7 | ESE 5 | E 6 | E 5 | E 5 | E 5 | E 5 | S 13 | S 13 | SW 13 | S 12 | — | S 12 | — | ESE 6 | WNW 7 |
| kJ | 14 | 22 | 5 | 6 | 7 | 10 | 3 | 2 | 9 | 8 | 9 | 2 | 3 | 3 | 7 | 3 | — | 3 | — | 3 | 4 |
Swell 3 Height (m) Direction Period (s) | WNW 8 | SW 6 | SW 6 | N 4 | W 13 | ESE 5 | SW 6 | — | — | — | S 11 | S 11 | S 13 | — | — | — | S 12 | S 20 | S 12 | SW 18 | ESE 6 |
| kJ | 24 | 15 | 7 | 1 | 12 | 2 | 1 | — | — | — | 2 | 2 | 3 | — | — | — | 3 | 7 | 3 | 13 | 4 |
Wind waves Height (m) Direction Period (s) | — | N 4 | — | SE 2 | SE 3 | E 5 | — | — | NNE 2 | N 3 | NNW 3 | NNW 4 | WNW 4 | — | NNW 4 | N 5 | N 5 | N 5 | N 5 | N 6 | N 6 |
| kJ | — | 9 | — | 1 | 2 | 27 | — | — | 1 | 5 | 7 | 2 | 21 | — | 5 | 54 | 65 | 51 | 33 | 39 | 50 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 27 | 28 | 27 | 385 | 225 | 0 | 10 | 27 | 10 | 28 | 28 | 28 | 28 | 28 | 28 | 81 | 81 | 261 | 399 | 119 | 228 |
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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