Surf Forecasts:
St Agnes surf forecast from 30 Aug 2026:
- Best quality surf: Saturday 5 Sep, 10PM (local time) - 5.5ft (1.7m), 9s period, W swell with cross-offshore winds.
- Most powerful swell: Friday 4 Sep, 4PM (local time) - 8ft (2.5m), 12s period, WNW swell with 1,952 kJ wave energy.
- Next surfable swell (1★+): Tuesday 1 Sep, 10AM (local time) - 3.5ft (1.1m), 9s 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 (Sep 01) at 10AM. The primary swell is predicted to be 1.1m and 9s 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 2.5m 12s and forecast to arrive on Friday (Sep 04) at 4PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 5s period and expected on Wednesday (Sep 02) at 4AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Tue 1st Sep) | 3.5ft (1.1m) 9s |
| Best Surf | 10PM (Sat 5th Sep) | 5.5ft (1.7m) 9s |
| Most Powerful | 4PM (Fri 4th Sep) | 8ft (2.5m) 12s |
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 the next couple of weeks are cooking up for us at St Agnes. I gotta be straight with you: this is a tough run. We’ve got a lot of days where the wind is just gonna mess things up, turning what could be decent swell into a washing machine. There are some glimmers, but you’re gonna have to pick your moments, especially if you want clean waves.
For the first week and a half, it’s a grinding pattern of solid but messy swell. The main problem is the wind. Most days we have fresh cross-off or cross-onshore winds in the 15 to 25 mph range. The swell energy is mostly moderate to strong, with readings like 475 (moderate energy) on the 30th, climbing to 1448 (strong energy) on the 31st, but it’s all served up with lumpy, choppy faces. On the 30th and 31st, we’re looking at 6ft to 10ft of swell from the WSW and W, but the wind keeps it from being surfable. The water temp is about average for this time of year.
There’s a bit of a break on Tuesday the 1st of September. The morning shows a drop to 4ft from the west, with a gentle breeze and clean conditions, but the cross-off wind and only moderate energy (201) mean it’s just ordinary. Still, it’s the cleanest thing we’ve seen in days. Wednesday the 2nd and Thursday the 3rd are back to the same story: chest to head-high swell, moderate to strong energy, but the wind makes it a chore.
Then we have a big gap of poor to marginal conditions from the 4th through the 11th. There’s plenty of swell, with the 4th showing 10ft and energy readings over 1500, and the 8th hitting 10ft with a massive energy of 1955, but it’s all blown out. The 11th of September has 8ft from the west with moderate energy (1301), but the onshore wind is no good for surfing – that setup looks more interesting for kite surfing than paddle surfing.
Now, finally, the light at the end of the tunnel hits on Saturday the 12th of September. This is the standout. The morning starts with a clean 8ft swell from the west, and the best part is a light offshore breeze from the SSE. The energy is strong at 985. The combo of size, good direction, and light offshore wind is where you want to be. The afternoon cleans up even more with gentle offshore breezes and 6ft from the WNW, though the energy drops to 518.
The absolute best on offer, the one to circle on your calendar, is the morning of Saturday the 12th of September. St Agnes will have clean, offshore conditions with a solid 8ft of west swell. That’s the one. But be aware, a crowd is likely as word gets out.
Sunday the 13th of September morning looks huge – an 12ft west swell with massive energy at 4132 – but the forecast says it’s too big for this break. That’s expert territory at that size, and with a cross-off wind, it could be a beast. The 14th settles down to a more manageable 5ft, but the magic is gone again.
So, bottom line: don't waste your time this week or early next week. Wait for that Saturday morning on the 12th for the clean, offshore windows. It’ll be worth it.
Rusty.
Short Range ForecastLight rain (total 9mm), mostly falling on Sun morning. Very mild (max 18°C on Sun morning, min 16°C on Sun afternoon). Winds decreasing (fresh winds from the SW on Sun afternoon, light winds from the W by Mon night). | Days 4-6 Weather SummaryMostly dry. Very mild (max 19°C on Wed morning, min 16°C on Tue night). Winds increasing (light winds from the SW on Tue night, strong winds from the W by Fri morning). | ||||||||||||||||||||
Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | |||||||||||||||
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) | WSW 9 | WSW 8 | W 10 | W 10 | W 10 | W 10 | W 9 | W 9 | W 8 | WSW 7 | WSW 8 | WSW 8 | W 8 | W 8 | W 9 | WNW 10 | WNW 12 | WNW 12 | WNW 11 | W 8 | W 9 |
Wave Graph | |||||||||||||||||||||
475 | 696 | 1802 | 1448 | 958 | 408 | 189 | 119 | 48 | 335 | 655 | 630 | 603 | 542 | 919 | 1501 | 1952 | 1018 | 202 | 359 | 398 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-on | cross-on | cross-on | cross | cross-off | cross | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross-on | cross-on | cross-on | on | cross-on | cross-off |
High Tide | 7:11AM6.32m | 7:27PM6.57m | 7:44AM6.37m | 8:01PM6.51m | 8:19AM6.28m | 8:38PM6.31m | 8:58AM6.06m | 9:19PM5.97m | 9:41AM5.71m | 10:06PM5.53m | 10:33AM5.29m | 11:07PM5.05m | 11:43AM4.91m | 00:30AM4.71m | |||||||
Low Tide | 1:27PM0.24m | 1:47AM0.20m | 1:59PM0.27m | 2:20AM0.30m | 2:34PM0.42m | 2:55AM0.54m | 3:12PM0.69m | 3:35AM0.89m | 3:57PM1.06m | 4:24AM1.31m | 4:55PM1.48m | 5:30AM1.73m | 6:18PM1.81m | ||||||||
6:31 | — | — | 6:31 | — | — | 6:33 | — | — | 6:35 | — | — | 6:37 | — | — | 6:39 | — | — | 6:39 | — | — | |
— | 8:09 | — | — | 8:07 | — | — | 8:06 | — | — | 8:04 | — | — | 8:01 | — | — | 8:00 | — | — | 7:58 | — | |
mm | 5 | 3 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 18 | 18 | 16 | 17 | 17 | 16 | 18 | 18 | 17 | 19 | 19 | 18 | 19 | 19 | 18 | 17 | 17 | 17 | 15 | 15 | 15 |
Feels °C | 13 | 12 | 10 | 12 | 12 | 14 | 15 | 15 | 16 | 15 | 15 | 15 | 16 | 16 | 14 | 10 | 10 | 12 | 11 | 12 | 13 |
Swell 1 Height (m) Direction Period (s) | N 5 | — | — | — | W 10 | W 10 | W 9 | W 9 | W 8 | SSW 16 | SSW 15 | SSW 15 | SW 15 | SW 15 | SW 15 | SSW 14 | SSW 14 | WNW 12 | WNW 11 | WNW 10 | W 9 |
2 | — | — | — | 958 | 408 | 189 | 119 | 48 | 25 | 23 | 21 | 35 | 60 | 37 | 21 | 20 | 1018 | 202 | 86 | 398 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | N 5 | N 5 | N 5 | SW 16 | — | — | — | SSW 15 | — | — | — | — | SSW 14 | SSW 14 | SSW 13 | SSW 13 |
— | — | — | — | — | 13 | 2 | 2 | 10 | — | — | — | 44 | — | — | — | — | 20 | 18 | 17 | 17 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | S 18 | SW 18 | SW 17 | SW 11 | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | 6 | 12 | 12 | 5 | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | WSW 9 | WSW 8 | W 10 | W 10 | — | — | — | — | SW 4 | WSW 7 | WSW 8 | WSW 8 | W 8 | W 8 | W 9 | WNW 10 | WNW 12 | — | WSW 6 | W 8 | — |
475 | 696 | 1802 | 1448 | — | — | — | — | 20 | 335 | 655 | 630 | 603 | 542 | 919 | 1501 | 1952 | — | 160 | 359 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 393 | 495 | 160 | 157 | 145 | 15 | 0 | 194 | 213 | 284 | 211 | 231 | 56 | 56 | 744 | 555 | 222 | 222 | 28 | 15 | 0 |
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.











