Surf Forecasts:
St Agnes surf forecast from 14 Sep 2026:
- Best quality surf: Saturday 19 Sep, 10PM (local time) - 5ft (1.5m), 10s period, W swell with cross-offshore winds.
- Most powerful swell: Friday 18 Sep, 7AM (local time) - 6.5ft (2.0m), 13s period, WNW swell with 1,336 kJ wave energy.
- Next surfable swell (1★+): Saturday 19 Sep, 10PM (local time) - 5ft (1.5m), 10s 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 19) at 10PM. The primary swell is predicted to be 1.5m and 10s period with a secondary swell of 0.1m and 14s. 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 2.0m 13s and forecast to arrive on Friday (Sep 18) at 7AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 6s period and expected on Wednesday (Sep 16) at 4PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Sat 19th Sep) | 5ft (1.5m) 10s |
| Best Surf | 10PM (Sat 19th Sep) | 5ft (1.5m) 10s |
| Most Powerful | 7AM (Fri 18th Sep) | 6.5ft (2.0m) 13s |
Table - best surf conditions forecast for St Agnes over the next 16 days.
The Lowdown
Alright, let’s break it down. St Agnes is the only game in town. First few days, forget about it – the wind is messy, the swell is junky.
Monday the 14th you’ve got 4ft of W swell with 9-second period and cross-offshore wind. Combined energy only 236 – weak and poor. Nope. Tuesday and Wednesday the 15th and 16th are bigger but blown to pieces by onshore wind. Wednesday morning hits 7ft with NNW wind onshore and combined energy up to 1019. Rough. Big, but rough.
Friday the 18th morning sees a 7ft W swell with 13-second period, cross-shore wind. Combined energy is 1442. That’s moderate to strong energy, but cross-shore winds and a beach break with long-period W swell often just run straight. Only marginal potential.
Now. The *real* standout comes Monday the 21st. Glassy calm, clear sky. 4ft WNW groundswell with a 13-second period. Combined energy at 425 – not massive, but the clean glassy surface will make it look silky. That morning is the absolute pick of the 16-day run. After that, Tuesday the 22nd morning has light offshore SE wind with a 4ft W swell, 10-second period, clean conditions. Not the same energy but still fun.
The next pocket is Tuesday the 29th: 5ft WNW swell, 12-second period, light WSW cross-shore wind. Combined energy at 686 – moderate. Marginal, but if you time the tide right, it could be a decent session.
Water temp is 64°F, which is about 3°F warmer than average – noticeable, not shocking.
So what’s the story? First week is all blown out junk. Second week, Monday the 21st stands out clearly. After that, the swell drops right off and there’s a long gap of nearly a week with no recommended action from Wednesday the 23rd through Monday the 28th. Then a possible decent little window on the 29th. But if you’re planning one session, make it the glassy Monday the 21st.
Rusty.
Short Range ForecastSome drizzle, heaviest during Wed night. Warm (max 20°C on Mon afternoon, min 14°C on Wed morning). Mainly fresh winds. | Days 4-6 Weather SummaryMostly dry. Very mild (max 19°C on Sat night, min 14°C on Thu night). Mainly fresh winds. | ||||||||||||||||||||
Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 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 | WSW 6 | W 8 | WNW 8 | WNW 9 | WNW 10 | WNW 11 | W 10 | W 7 | WNW 8 | WNW 9 | WNW 13 | W 13 | WNW 12 | W 7 | W 7 | W 10 | W 10 | W 12 | WNW 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 230 | 181 | 64 | 407 | 437 | 632 | 1007 | 685 | 458 | 297 | 438 | 775 | 1192 | 825 | 206 | 134 | 146 | 384 | 279 | 418 | 492 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-on | cross-on | on | on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross | cross-off | cross | cross | cross | cross | cross-on | cross |
High Tide | 7:59PM6.41m | 8:15AM6.17m | 8:33PM6.00m | 8:49AM5.79m | 9:08PM5.53m | 9:25AM5.34m | 9:45PM5.02m | 10:05AM4.86m | 10:31PM4.52m | 11:00AM4.42m | 11:41PM4.13m | 12:28PM4.15m | 1:29AM4.03m | ||||||||
Low Tide | 1:58PM0.25m | 2:16AM0.43m | 2:30PM0.57m | 2:47AM0.82m | 3:03PM0.97m | 3:19AM1.26m | 3:39PM1.43m | 3:56AM1.72m | 4:23PM1.89m | 4:45AM2.16m | 5:28PM2.29m | 6:06AM2.47m | 7:12PM2.45m | ||||||||
 | |  |  | | | |  |  | | | | | | | | | | | |  | |
 | 6:54 | — | — | 6:54 | — | — | 6:56 | — | — | 6:58 | — | — | 7:00 | — | — | 7:01 | — | — | 7:03 | — | — |
 | — | 7:37 | — | — | 7:36 | — | — | 7:32 | — | — | 7:30 | — | — | 7:29 | — | — | 7:27 | — | — | 7:23 | — |
mm | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 19 | 20 | 18 | 16 | 16 | 16 | 15 | 15 | 16 | 16 | 16 | 15 | 16 | 16 | 17 | 17 | 18 | 19 | 19 | 19 | 18 |
Feels °C | 18 | 19 | 17 | 11 | 10 | 12 | 10 | 10 | 12 | 11 | 10 | 10 | 12 | 12 | 15 | 14 | 15 | 17 | 17 | 18 | 19 |
Swell 1 Height (m) Direction Period (s) | SW 12 | W 9 | W 8 | S 11 | S 11 | S 11 | WNW 10 | WNW 11 | N 5 | W 10 | — | S 13 | WNW 13 | W 13 | WNW 12 | WNW 11 | WNW 10 | W 10 | W 10 | W 12 | WNW 13 |
| kJ | 6 | 181 | 46 | 2 | 2 | 2 | 1007 | 685 | 14 | 71 | — | 3 | 1192 | 825 | 206 | 93 | 108 | 384 | 279 | 418 | 492 |
Swell 2 Height (m) Direction Period (s) | SW 12 | SW 12 | WNW 12 | S 11 | — | — | S 11 | N 6 | S 13 | N 5 | — | — | SW 12 | N 5 | SW 16 | SW 16 | SW 15 | SW 14 | WNW 13 | SW 14 | SW 13 |
| kJ | 6 | 6 | 27 | 2 | — | — | 2 | 41 | 4 | 2 | — | — | 6 | 4 | 10 | 10 | 9 | 8 | 62 | 8 | 7 |
Swell 3 Height (m) Direction Period (s) | — | W 14 | SW 12 | — | — | — | — | — | — | — | — | — | S 18 | SW 17 | S 12 | S 12 | S 11 | — | SW 14 | — | — |
| kJ | — | 4 | 6 | — | — | — | — | — | — | — | — | — | 6 | 12 | 3 | 3 | 2 | — | 8 | — | — |
Wind waves Height (m) Direction Period (s) | W 9 | — | WSW 6 | W 8 | WNW 8 | WNW 9 | N 6 | — | W 10 | W 7 | WNW 8 | WNW 9 | — | — | W 6 | W 7 | W 7 | — | — | — | — |
| kJ | 230 | — | 64 | 407 | 437 | 632 | 39 | — | 458 | 297 | 438 | 775 | — | — | 161 | 134 | 146 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 15 | 15 | 15 | 222 | 222 | 103 | 103 | 213 | 213 | 555 | 222 | 56 | 15 | 198 | 15 | 29 | 29 | 15 | 20 | 15 | 6 |
Best forecast wave conditions in North Cornwall | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our St Agnes surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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.
Nearest