
Surf Forecasts:
St Agnes surf forecast from 11 Sep 2026:
- Best quality surf: Saturday 12 Sep, 1AM (local time) - 3.5ft (1.1m), 8s period, W swell with cross-offshore winds.
- Most powerful swell: Wednesday 16 Sep, 7AM (local time) - 7ft (2.1m), 10s period, W swell with 830 kJ wave energy.
- Next surfable swell (1★+): Saturday 12 Sep, 1AM (local time) - 3.5ft (1.1m), 8s 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 Saturday (Sep 12) at 1AM. The primary swell is predicted to be 1.1m and 8s period. 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 2.1m 10s and forecast to arrive on Wednesday (Sep 16) at 7AM. 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 (Sep 16) at 7PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Sat 12th Sep) | 3.5ft (1.1m) 8s |
| Best Surf | 1AM (Sat 12th Sep) | 3.5ft (1.1m) 8s |
| Most Powerful | 7AM (Wed 16th Sep) | 7ft (2.1m) 10s |
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 cards for the next couple of weeks at St Agnes.
To be honest, the next week or so is looking pretty grim. We’ve got a lot of onshore and cross-onshore winds messing things up, and the swell energy, while sometimes moderate to strong, is coming with poor conditions. You’re looking at a solid stretch of days where it’s just not worth paddling out unless you’re desperate for a paddle. Friday the 11th has a 5ft west swell but with a cross-on breeze, making it choppy, and the combined energy is a moderate 417. That pretty much sets the tone for the next several days. Saturday the 12th and Sunday the 13th aren't much better, with moderate energy (267 to 509) but wafty winds and only marginal conditions at best. We’ve got a real dry spell until the middle of the following week.
Now, if you can hold out, the light at the end of the tunnel appears around the morning of Wednesday the 23rd of September. That morning is looking like a true standout. We’ve got glassy conditions – that’s a total wind shutdown – with a clean, 7ft swell from the west at 8 seconds. The combined swell energy is a moderate 534, but it’s the glass that makes this one special. That’s a solid, fun-sized wave, but at 7ft it’s pushing into that size that’s more for intermediates and up; beginners might find it a bit much. Crowds are often a factor here, so you’ll want to be sharp.
Then, the real gem might be the morning of Thursday the 25th of September. We’re looking at a 7ft west swell with a period of 9 seconds, a light offshore wind from the east at just 3 mph, and the combined energy jumps right up to a strong 1125. The forecast suggests very good surf conditions. That’s the session you circle on your calendar. Clean, offshore conditions with a powerful, long-period groundswell. For a spot like St Agnes, which is fairly exposed to the west, this is a dream setup. Just know that at 8ft in the afternoon, it gets a bit hefty for the average surfer.
A quick note on the water – for that first standout on the 23rd, it’s worth mentioning the water temp anomaly is unremarkable, so just your usual autumn wetsuit will do.
So, the takeaway? Suffer through a week of mediocrity, then pounce on the 23rd morning for clean, glassy waves. But the absolute best bet, the one to plan for, is the morning of Thursday the 25th – that’s your session for clean, strong, offshore surf.
Stay patient, and I’ll see you in the water.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Sat night. Very mild (max 19°C on Sat afternoon, min 14°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 21°C on Mon afternoon, min 15°C on Tue night). Winds increasing (light winds from the WSW on Sun night, fresh winds from the WNW by Tue afternoon). | ||||||||||||||||||||
Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | |||||||||||||||
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 10 | W 10 | W 10 | W 9 | W 9 | W 9 | W 8 | WNW 10 | WNW 8 | WNW 8 | W 10 | W 10 | WNW 10 | WNW 10 | W 6 | W 9 |
Wave Graph | |||||||||||||||||||||
417 | 292 | 156 | 235 | 323 | 708 | 502 | 369 | 246 | 157 | 153 | 109 | 443 | 654 | 630 | 725 | 620 | 356 | 98 | 83 | 372 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross-off | cross-off | off | cross-on | cross-on | on | on | on | cross-on | cross | cross | cross-on |
High Tide | 5:53AM6.36m | 6:11PM6.74m | 6:31AM6.55m | 6:48PM6.80m | 7:07AM6.57m | 7:24PM6.68m | 7:41AM6.44m | 7:59PM6.41m | 8:15AM6.17m | 8:33PM6.00m | 8:49AM5.79m | 9:08PM5.53m | 9:25AM5.34m | 9:45PM5.02m | |||||||
Low Tide | 12:14PM0.13m | 00:37AM-0.05m | 12:50PM0.01m | 1:11AM-0.04m | 1:25PM0.06m | 1:44AM0.13m | 1:58PM0.25m | 2:16AM0.43m | 2:30PM0.57m | 2:47AM0.82m | 3:03PM0.97m | 3:19AM1.26m | 3:39PM1.43m | 3:56AM1.72m | |||||||
6:48 | — | — | 6:50 | — | — | 6:52 | — | — | 6:54 | — | — | 6:54 | — | — | 6:56 | — | — | 6:58 | — | — | |
— | 7:44 | — | — | 7:42 | — | — | 7:39 | — | — | 7:37 | — | — | 7:36 | — | — | 7:32 | — | — | 7:30 | — | |
mm | — | — | — | — | — | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 17 | 17 | 16 | 18 | 19 | 18 | 19 | 19 | 19 | 20 | 21 | 18 | 17 | 16 | 16 | 15 | 15 | 15 | 16 | 17 | 16 |
Feels °C | 15 | 16 | 14 | 14 | 15 | 15 | 18 | 19 | 20 | 19 | 20 | 16 | 13 | 10 | 11 | 9 | 10 | 10 | 12 | 13 | 13 |
Swell 1 Height (m) Direction Period (s) | W 9 | W 9 | W 8 | WNW 14 | NW 13 | S 14 | W 10 | W 10 | W 9 | W 9 | W 9 | W 8 | SSW 5 | SSW 6 | S 5 | W 10 | W 10 | WNW 10 | WNW 10 | W 9 | W 9 |
417 | 292 | 156 | 20 | 40 | 4 | 502 | 369 | 246 | 157 | 153 | 109 | 17 | 12 | 1 | 725 | 620 | 356 | 98 | 64 | 372 | |
Swell 2 Height (m) Direction Period (s) | — | S 16 | — | SW 15 | SW 15 | S 14 | SW 13 | SW 13 | S 13 | SW 12 | SW 12 | WNW 12 | SW 11 | S 11 | — | — | S 13 | N 6 | N 6 | N 5 | SW 13 |
— | 5 | — | 8 | 8 | 4 | 7 | 7 | 3 | 6 | 6 | 14 | 5 | 2 | — | — | 4 | 26 | 5 | 2 | 7 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | S 15 | — | — | — | — | — | SW 12 | SW 12 | SW 12 | — | — | — | — | — | S 13 | — | — | S 18 |
— | — | — | 4 | — | — | — | — | — | 6 | 6 | 6 | — | — | — | — | — | 4 | — | — | 6 | |
Wind waves Height (m) Direction Period (s) | — | — | — | W 8 | W 8 | W 10 | — | — | — | — | — | S 3 | WNW 10 | WNW 8 | WNW 8 | N 6 | N 6 | — | W 6 | W 6 | — |
— | — | — | 235 | 323 | 708 | — | — | — | — | — | 6 | 443 | 654 | 630 | 85 | 69 | — | 72 | 83 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 56 | 28 | 0 | 15 | 198 | 222 | 15 | 145 | 15 | 0 | 15 | 0 | 747 | 320 | 103 | 751 | 222 | 81 | 261 | 211 | 21 |
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.










