
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 cross-offshore winds.
- Most powerful swell: Thursday 13 Aug, 10AM (local time) - 4ft (1.2m), 11s period, W swell with 317 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 cross-offshore 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 1.0m 6s period and expected on Wednesday (Aug 12) at 4PM.
| 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. Let's have a look at what's on the table for St Agnes over the next couple of weeks.
Right off the bat, I gotta be straight with you – it's a tough watch. We're looking at a long stretch of pretty ordinary conditions. The surf's not really offering anything worth getting excited about for a good while. The water's sitting at 66°, which is a touch warmer than normal for this time of year, but that's about the only thing that's slightly out of the ordinary.
The first real chance of something surfable pops up on Wednesday, August 12th. The afternoon sees a bit of life with a 3ft swell from the west, a period of 9 seconds, and light easterly cross-off winds. The combined energy is moderate at 139, so there's a little push, but the wave comment tells us it's "surfable waves but very ordinary conditions". It's not a standout, but it's the best we've got early on.
Thursday the 13th has a bit more size in the morning, with a 4ft west-northwest swell and a period of 11 seconds, giving a combined energy of 317. But it's blown out by a solid 12 mph onshore wind, so it's a write-off. The same story runs through the weekend – a bit of swell here and there, but the wind is just killing it.
We get a bit of a reprieve around Thursday, August 20th. The morning has clean conditions with a cross-off easterly breeze at 16 mph and a 2ft west swell. The energy is moderate at 109. It's small, but clean. The afternoon on the 21st of August is also clean, with a 2ft swell and a 9-second period. It's small, but if you're desperate, it's a paddle.
Then we get a real spike in size on Sunday, August 23rd. We're talking a 10ft west-northwest swell in the morning, with a combined energy of 1531 – that's strong to very strong energy. But it's hammered by a 16 mph onshore wind. This is big, messy, and raw. Only for the experts, and even then, it's a battle. The following Tuesday, August 25th, has a long-period groundswell from the west at 16 seconds, but it's only 2ft and the wind is blowing 16 mph cross-on, making it lumpy. A long period like that needs a point break or a reef to really shine, but the wind is just ruining it.
Honestly, if you're looking for a true standout, there isn't one. The cleanest conditions we see are on the 20th and 21st of August, but the swell is tiny. The big swell on the 23rd is just too wind-affected. It's a period where you're better off checking the forecasts again in a few days, because this run of poor conditions has to break eventually. For now, the kites might have more fun than the paddle surfers on those bigger, windier days.
Stay patient.
Rusty.
Short Range ForecastMostly dry. Warm (max 27°C on Wed afternoon, min 16°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 21°C on Thu afternoon, min 15°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
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) | WNW 5 | WNW 8 | W 8 | WNW 8 | W 13 | W 11 | W 10 | W 9 | W 9 | W 11 | W 10 | W 10 | W 9 | W 8 | W 8 | W 8 | WNW 8 | W 8 | W 7 | W 7 | N 4 |
Wave Graph | |||||||||||||||||||||
36 | 22 | 33 | 19 | 12 | 85 | 125 | 139 | 180 | 317 | 277 | 181 | 126 | 173 | 161 | 138 | 96 | 57 | 25 | 26 | 12 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-off | cross-off | cross-off | cross | cross-off | cross-on | on | cross-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 | 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 | 19 | 23 | 22 | 20 | 26 | 27 | 22 | 20 | 21 | 19 | 17 | 17 | 17 | 17 | 16 | 16 | 18 | 17 | 16 |
Feels °C | 15 | 15 | 18 | 20 | 18 | 18 | 23 | 25 | 21 | 17 | 21 | 19 | 15 | 13 | 16 | 13 | 12 | 12 | 15 | 13 | 14 |
Swell 1 Height (m) Direction Period (s) | WNW 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 | W 8 | W 8 | W 8 | WNW 8 | W 8 | W 7 | W 7 | W 7 |
36 | 10 | 33 | 19 | 11 | 85 | 125 | 139 | 180 | 317 | 277 | 181 | 126 | 173 | 161 | 138 | 96 | 57 | 25 | 26 | 9 | |
Swell 2 Height (m) Direction Period (s) | SW 6 | WNW 8 | SW 6 | SW 6 | W 9 | WNW 7 | ESE 5 | ESE 6 | SE 5 | E 5 | E 6 | E 5 | S 13 | S 13 | SW 13 | — | — | SW 12 | W 8 | SW 18 | WNW 7 |
14 | 22 | 7 | 6 | 7 | 10 | 2 | 6 | 1 | 2 | 15 | 2 | 3 | 3 | 7 | — | — | 6 | 10 | 13 | 9 | |
Swell 3 Height (m) Direction Period (s) | WNW 8 | SW 6 | SW 13 | N 4 | W 13 | SW 6 | SW 6 | — | — | — | — | S 11 | S 13 | S 11 | S 10 | — | — | S 20 | S 12 | S 18 | SW 18 |
24 | 15 | 7 | 1 | 12 | 1 | 1 | — | — | — | — | 2 | 3 | 2 | 2 | — | — | 7 | 3 | 7 | 12 | |
Wind waves Height (m) Direction Period (s) | — | N 4 | N 4 | SE 2 | SE 3 | SE 5 | E 5 | E 6 | — | — | NW 3 | WNW 3 | WNW 6 | — | N 4 | N 5 | N 5 | N 4 | N 4 | N 4 | N 4 |
— | 9 | 5 | 1 | 3 | 7 | 35 | 64 | — | — | 2 | 5 | 69 | — | 5 | 23 | 16 | 12 | 5 | 9 | 12 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 27 | 28 | 27 | 232 | 402 | 0 | 1 | 0 | 10 | 23 | 222 | 81 | 28 | 279 | 28 | 162 | 286 | 168 | 27 | 400 | 402 |
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.











