Surf Forecasts:
St Agnes surf forecast from 6 Aug 2026:
- Best quality surf: Wednesday 12 Aug, 1AM (local time) - 2ft (0.6m), 11s period, W swell with glassy winds.
- Most powerful swell: Thursday 13 Aug, 4AM (local time) - 4.5ft (1.3m), 11s period, W swell with 388 kJ wave energy.
- Next surfable swell (1★+): Wednesday 12 Aug, 1AM (local time) - 2ft (0.6m), 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 Wednesday (Aug 12) at 1AM. The primary swell is predicted to be 0.6m 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 1.3m 11s and forecast to arrive on Thursday (Aug 13) at 4AM. 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 5s period and expected on Thursday (Aug 06) at 4PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Wed 12th Aug) | 2ft (0.6m) 11s |
| Best Surf | 1AM (Wed 12th Aug) | 2ft (0.6m) 11s |
| Most Powerful | 4AM (Thu 13th Aug) | 4.5ft (1.3m) 11s |
Table - best surf conditions forecast for St Agnes over the next 16 days.
The Lowdown
Alright folks, Rusty here. Gotta be straight with you—this is a grim run for St Agnes. The whole 16-day window is a real struggle, so don't be expecting much.
We’re kicking off Thursday the 6th of August, and there’s just nothing doing. The swell is tiny and weak, with a combined energy of only 95 (weak), and the wind is on it from the NW, making a mess of things. That sets the tone for the next week. We’ve got a long stretch of flat, poor conditions. Friday the 7th and Saturday the 8th offer a couple of glimmers – Saturday morning there’s a light cross-off breeze from the SE, and Saturday afternoon goes totally glassy with the wind dropping to zero. But the swell is a pathetic 1ft to 1ft, with a combined energy stuck in the 20s and 30s (weak). It's barely a ripple.
Things stay rubbish through the start of the next week. On Monday the 10th and Tuesday the 11th, there's a little bump in size to 3ft, but the period is a short 6 seconds and the wind is cross-on, so it's just lumpy onshore slop. The combined energy nudges up to 75 (weak), but it’s still not surfable.
You have to wait all the way until Wednesday the 12th of August for the first sign of life. The swell picks up to 3ft from the W with a 10-second period, and the combined energy finally hits a moderate 160 – it’s got some push. But the wind is onshore from the NW, so it’s choppy and messy. The water temp is 65°, which is about a touch warmer than normal for this time of year.
The best bet in this whole outlook is probably the Sunday the 16th of August. The swell size bumps up to 6ft from the W, with a combined energy of 341 (moderate). The tricky part is the period is a short 7-8 seconds, so it’s a windswell. The wind is cross-on from the WNW, so it’s not going to be clean. Even then, the conditions are still rated as poor. Not a standout, just the best of a bad lot.
Then the energy really starts to build. Monday the 17th of August has a 6ft W swell with a combined energy of 693 (strong), but it’s getting hammered by a 30 km/h W wind – that’s kite-surfing territory, not a paddle surfer’s dream. The swell pushes over 8ft on the 19th and 20th of August, with combined energy over 700 (strong), but the wind is cross-off or cross-on, and the period stays short. These waves are powerful and big, so only for experts, and the wind is going to make them ugly.
Honestly, there’s not a single day in this 16-day window that I’d call a standout. The closest you get is a couple of days where the swell has some size, but the wind is wrong. The surf is fairly consistent in terms of showing up, but the quality is just absent. Best to keep the board in the car and wait for the forecasts to change.
Rusty.
Short Range ForecastMostly dry. Warm (max 22°C on Sat afternoon, min 15°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 22°C on Tue morning, min 18°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | |||||||||||||||
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 6 | W 6 | W 10 | W 9 | W 9 | W 9 | WNW 10 | WNW 10 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 8 | WNW 8 | W 8 | WNW 8 | WNW 7 | W 11 | W 10 | WSW 9 | WSW 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 77 | 30 | 17 | 15 | 15 | 15 | 22 | 30 | 32 | 15 | 25 | 26 | 23 | 22 | 33 | 19 | 18 | 84 | 226 | 238 | 202 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-on | cross-on | on | cross-on | cross-off | glassy | cross-on | cross-on | on | on | cross-on | cross-on | on | glassy | cross-on | glassy | cross | cross-on | cross-on |
High Tide | 11:00AM5.27m | 11:30PM5.22m | 12:05PM5.02m | 00:44AM4.96m | 1:26PM4.93m | 2:09AM4.95m | 2:49PM5.12m | 3:28AM5.21m | 4:00PM5.54m | 4:32AM5.62m | 4:57PM6.03m | 5:25AM6.02m | 5:47PM6.47m | ||||||||
Low Tide | 5:17PM1.42m | 5:53AM1.54m | 6:29PM1.65m | 7:13AM1.71m | 7:59PM1.68m | 8:42AM1.63m | 9:25PM1.41m | 9:58AM1.29m | 10:34PM0.96m | 10:59AM0.85m | 11:30PM0.50m | 11:49AM0.44m | 00:17AM0.14m | ||||||||
 |  |  | | | |  | | | | | | | | | | |  | | | | |
 | 5:54 | — | — | 5:56 | — | — | 5:58 | — | — | 5:58 | — | — | 6:01 | — | — | 6:01 | — | — | 6:03 | — | — |
 | — | 8:57 | — | — | 8:54 | — | — | 8:52 | — | — | 8:52 | — | — | 8:50 | — | — | 8:47 | — | — | 8:45 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 17 | 17 | 16 | 18 | 18 | 16 | 21 | 22 | 17 | 21 | 20 | 18 | 21 | 21 | 18 | 22 | 22 | 19 | 23 | 23 | 20 |
Feels °C | 14 | 14 | 15 | 16 | 15 | 15 | 19 | 22 | 16 | 18 | 16 | 17 | 19 | 19 | 17 | 21 | 21 | 19 | 21 | 21 | 21 |
Swell 1 Height (m) Direction Period (s) | WNW 6 | W 6 | N 5 | WNW 5 | WNW 4 | W 9 | WNW 10 | WNW 10 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 5 | WNW 5 | W 8 | WNW 8 | WNW 7 | W 11 | W 10 | WSW 9 | WSW 9 |
| kJ | 77 | 30 | 5 | 8 | 3 | 15 | 22 | 30 | 32 | 15 | 25 | 26 | 13 | 9 | 33 | 19 | 18 | 84 | 226 | 238 | 202 |
Swell 2 Height (m) Direction Period (s) | N 5 | N 5 | W 10 | W 9 | W 9 | WNW 5 | W 9 | WSW 7 | SW 7 | WSW 6 | SW 6 | SW 6 | WNW 8 | WNW 8 | SW 6 | WSW 6 | W 9 | WNW 7 | E 4 | E 6 | W 11 |
| kJ | 7 | 7 | 17 | 15 | 15 | 3 | 6 | 5 | 7 | 4 | 6 | 6 | 23 | 22 | 6 | 4 | 7 | 10 | 2 | 6 | 123 |
Swell 3 Height (m) Direction Period (s) | W 10 | W 10 | SW 6 | N 5 | SW 12 | SW 12 | SW 7 | SW 11 | SW 12 | SW 12 | SW 12 | SW 12 | SW 6 | SW 6 | WNW 4 | W 10 | WSW 6 | SW 6 | — | — | E 5 |
| kJ | 18 | 17 | 1 | 2 | 6 | 5 | 2 | 5 | 6 | 6 | 6 | 6 | 6 | 6 | 2 | 8 | 3 | 1 | — | — | 2 |
Wind waves Height (m) Direction Period (s) | — | — | W 5 | — | — | — | — | — | — | N 2 | N 2 | NW 3 | — | — | — | — | — | — | — | — | — |
| kJ | — | — | 14 | — | — | — | — | — | — | 1 | 1 | 4 | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 44 | 402 | 232 | 400 | 390 | 384 | 41 | 41 | 27 | 223 | 44 | 27 | 21 | 414 | 27 | 27 | 402 | 0 | 23 | 21 | 23 |
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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