Surf Forecasts:
St Agnes surf forecast from 14 Aug 2026:
- Most powerful swell: Wednesday 19 Aug, 7PM (local time) - 4.5ft (1.4m), 9s period, WNW swell with 300 kJ wave energy.
Best Forecast Surf Conditions for St Agnes this week:
The most powerful waves expected at St Agnes in the next 16 days are 1.4m 9s and forecast to arrive on Wednesday (Aug 19) at 7PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 4s period and expected on Sunday (Aug 16) at 10AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 7PM (Wed 19th Aug) | 4.5ft (1.4m) 9s |
Table - best surf conditions forecast for St Agnes over the next 16 days.
The Lowdown
Right, let’s have a look at what’s on the cards for St Agnes over the next couple of weeks. I’ll be straight with you, mate – it’s a bit of a slow burner. There’s a long dry spell right from the start, so don’t bother waxing up just yet.
The first few days are a write-off. From Friday 14 August right through to the end of next week, the surf is pretty miserable. The swell is small, mostly under 3 ft, and coming from the west, but the wind is a real problem. It’s cross-onshore or onshore, blowing anywhere from 6 to 18 mph, turning the ocean into a choppy, lumpy mess. The combined energy is weak, often below 100 (135-29), so there’s just no push. It’s all marked as poor surf conditions. You’ll be looking at a solid week or more of this.
Now, there’s a glimmer of hope, but you’ll need patience. The first hint of something half-decent doesn’t show up until Wednesday 26 August. On the Wednesday morning, we get a bit of a break – a light southeast breeze at 3 mph, blowing offshore, which will clean things right up. The swell is only 1 ft from the west-northwest, with a 10-second period, so it’s tiny but it’s *clean*. The energy is still weak (83). It’s surfable but very ordinary.
The real standout, and the only one worth circling on the calendar, is Wednesday 26 August in the afternoon. The wind goes glassy – dead calm – and the swell lifts to 4 ft from the west, but with a short period of 6 seconds. The combined energy ticks up to a moderate 163. It’s not going to be a world-class session, but with absolutely no wind and clean conditions, it’ll be the best we get. The water temp is about average for this time of year, so no nasty surprises.
After that, Thursday 27 August brings 5 ft swell from the west with a 9-second period, and a stiff cross-offshore breeze from the east-southeast at 18 mph. The energy jumps to 408 (strong), so there’ll be plenty of push, but that wind, while clean, is strong. It’ll be a challenge and probably more for the experienced crew. The break at St Agnes is fairly exposed to the west-southwest, so this westerly swell lines up alright, but the size and wind might make it feel like a battle. Crowds are likely here.
After that, it fades out again. Friday 28 August morning is clean but barely 2 ft and weak energy (113), then the weekend goes to crap with lumpy onshores.
Honestly, if you’re a beginner, you’ll want to sit out until the 26th, and even then, 4 ft is right at the edge of comfortable. For the experienced, the 27th might offer a bit of grunt, but it’s a windy one. The whole period is a tester. The long, empty gap at the start says it all – this area can have quiet spells, and this is one of them. Forecasts can always change, but as it stands, mark your diary for Wednesday afternoon 26 August.
Rusty.
Short Range ForecastMostly dry. Warm (max 22°C on Fri morning, min 15°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 21°C on Tue afternoon, min 16°C on Tue night). Mainly fresh winds. | ||||||||||||||||||||
Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | |||||||||||||||
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) | W 9 | W 9 | W 8 | W 8 | W 8 | W 8 | WNW 7 | W 7 | W 7 | WNW 5 | W 8 | W 7 | W 6 | W 6 | WNW 6 | WNW 10 | WNW 10 | WNW 7 | WNW 7 | WNW 6 | WNW 7 |
Wave Graph | |||||||||||||||||||||
129 | 123 | 165 | 117 | 95 | 55 | 18 | 25 | 12 | 37 | 115 | 77 | 64 | 86 | 83 | 258 | 271 | 137 | 234 | 169 | 244 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | on | cross-on | on | cross-on | on | on | cross-on | on | on | cross | cross | cross | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 6:54AM6.50m | 7:13PM6.86m | 7:34AM6.51m | 7:53PM6.76m | 8:13AM6.37m | 8:31PM6.49m | 8:51AM6.09m | 9:09PM6.08m | 9:28AM5.72m | 9:48PM5.59m | 10:08AM5.28m | 10:29PM5.07m | 10:52AM4.83m | 11:20PM4.59m | |||||||
Low Tide | 1:15PM0.01m | 1:40AM-0.08m | 1:54PM0.05m | 2:18AM0.07m | 2:31PM0.25m | 2:54AM0.38m | 3:07PM0.57m | 3:29AM0.78m | 3:44PM0.99m | 4:05AM1.23m | 4:23PM1.44m | 4:45AM1.69m | 5:10PM1.88m | ||||||||
6:07 | — | — | 6:07 | — | — | 6:09 | — | — | 6:11 | — | — | 6:13 | — | — | 6:13 | — | — | 6:16 | — | — | |
— | 8:43 | — | — | 8:40 | — | — | 8:38 | — | — | 8:37 | — | — | 8:35 | — | — | 8:32 | — | — | 8:30 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 21 | 18 | 18 | 16 | 16 | 19 | 18 | 18 | 20 | 19 | 18 | 20 | 21 | 20 | 19 | 19 | 17 | 18 | 18 | 17 |
Feels °C | 22 | 21 | 16 | 14 | 12 | 14 | 18 | 15 | 18 | 18 | 17 | 17 | 18 | 19 | 17 | 15 | 15 | 13 | 12 | 13 | 14 |
Swell 1 Height (m) Direction Period (s) | W 9 | W 9 | W 8 | W 8 | W 8 | W 8 | WNW 7 | W 7 | W 7 | WNW 9 | SW 18 | SW 16 | NW 6 | SW 17 | SSW 17 | SSW 16 | SSW 16 | W 9 | SSW 14 | SW 14 | SSW 14 |
129 | 123 | 165 | 117 | 95 | 55 | 18 | 25 | 8 | 27 | 12 | 10 | 19 | 11 | 29 | 25 | 24 | 76 | 21 | 33 | 19 | |
Swell 2 Height (m) Direction Period (s) | S 13 | S 13 | SW 13 | — | — | SW 12 | NNE 4 | N 4 | — | SW 18 | — | S 19 | SSW 17 | SW 17 | NW 15 | SSW 16 | — | SSW 15 | SSW 14 | SSW 14 | — |
3 | 3 | 7 | — | — | 6 | 4 | 2 | — | 12 | — | 7 | 28 | 11 | 8 | 24 | — | 23 | 21 | 41 | — | |
Swell 3 Height (m) Direction Period (s) | S 13 | S 13 | S 10 | — | — | S 20 | WSW 7 | SW 18 | SW 18 | — | — | — | SSW 17 | SW 17 | W 11 | W 12 | — | — | — | — | — |
3 | 3 | 2 | — | — | 7 | 11 | 13 | 12 | — | — | — | 28 | 11 | 2 | 3 | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | N 3 | N 4 | N 4 | N 4 | — | — | NW 4 | WNW 5 | W 8 | W 7 | W 6 | W 6 | WNW 6 | WNW 10 | WNW 10 | WNW 7 | WNW 7 | WNW 6 | WNW 7 |
— | — | 2 | 19 | 19 | 18 | — | — | 4 | 37 | 115 | 77 | 64 | 86 | 83 | 258 | 271 | 137 | 234 | 169 | 244 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 15 | 29 | 28 | 285 | 245 | 168 | 392 | 400 | 279 | 279 | 213 | 21 | 15 | 213 | 201 | 81 | 213 | 290 | 751 | 213 | 81 |
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.











