
Surf Forecasts:
St Agnes surf forecast from 13 Sep 2026:
- Best quality surf: Sunday 20 Sep, 7AM (local time) - 7ft (2.1m), 14s period, W swell with cross-offshore winds.
- Most powerful swell: Sunday 20 Sep, 7AM (local time) - 7ft (2.1m), 14s period, W swell with 1,706 kJ wave energy.
- Next surfable swell (1★+): Sunday 13 Sep, 10PM (local time) - 4.5ft (1.3m), 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 Sunday (Sep 13) at 10PM. The primary swell is predicted to be 1.3m and 10s period with a secondary swell of 0.1m and 13s. 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 14s and forecast to arrive on Sunday (Sep 20) at 7AM. Winds are predicted to be cross-offshore 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 1PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Sun 13th Sep) | 4.5ft (1.3m) 10s |
| Best Surf | 7AM (Sun 20th Sep) | 7ft (2.1m) 14s |
| Most Powerful | 7AM (Sun 20th Sep) | 7ft (2.1m) 14s |
Table - best surf conditions forecast for St Agnes over the next 16 days.
The Lowdown
Right then, let’s have a look at what St Agnes has got cooking for us over the next couple of weeks. I gotta be straight with you, it’s a bit of a rough patch for the most part. The wind is just not playing ball, and while there’s plenty of swell around, it’s getting chopped up or blown out. You’re going to have to be patient and pick your moments.
Alright, starting off this Sunday the 13th, we’ve got a 5 ft swell from the west, but it’s a messy one. With a cross-shore breeze at 12 mph, it’s just lumpy and unappealing. Monday the 14th cleans up a little, with a light 4 ft west swell and a cross-offshore breeze in the morning, giving us clean conditions. The energy is moderate at best though. It’s small but it could be worth a look for the more dedicated amongst you.
Tuesday the 15th sees the swell bump up a touch, but the wind swings onshore and gets fresh. It’s not the one. Wednesday the 16th has some size – 6 ft from the WNW – but again the wind is on it, and the energy is strong, but messy. It’s not going to be pretty.
Now, hold on for Thursday the 18th. There’s a big, long-period groundswell filling in from the WNW. We’re talking a 6 ft swell with a 14-second period and a lot of energy behind it. The wind is cross-onshore in the morning, which is a shame, but by Friday afternoon it switches to a cross-offshore breeze. That’s when it gets interesting. The waves will be holding some serious power, but with that long period, it might be a bit too straight for the beach breaks – a point break or reef would be the go. It’s marginal, but it’s the best we’ve seen so far.
Saturday the 19th gets blown out again, and we’re back to lumpy conditions.
But here’s the one to circle on your calendar. On Sunday the 20th, we’ve got a morning session that looks very promising. The swell is a solid 7 ft from the WNW, with a very long 14-second period. The energy is strong, and the wind is a cross-offshore breeze from the SSW at 16 mph, which should give us clean, lined-up waves. This is the standout. It’s a big swell, so it’s for the experienced crew – the power will be significant. It could be a real treat if the tide lines up. Just be aware, it can get crowded at St Agnes.
The following week drops off. Monday the 21st and Tuesday the 22nd are back to onshore winds and smaller, messier waves. Thursday the 24th offers a glimmer with a clean 5 ft west swell and a light cross-offshore breeze, but it’s nothing special. After that, it fades into small, weak, and choppy conditions right through to the 28th.
So, the best bet is without a doubt the morning of Sunday the 20th of September. It’s a powerful, clean groundswell that should deliver. Get on it if you can.
Rusty.
Short Range ForecastSome drizzle, heaviest during Sun night. Warm (max 21°C on Mon afternoon, min 16°C on Tue morning). Mainly fresh winds. | Days 4-6 Weather SummaryLight rain (total 3mm), mostly falling on Wed night. Very mild (max 16°C on Tue night, min 14°C on Tue night). Mainly fresh winds. | ||||||||||||||||||||
Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | |||||||||||||||
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 10 | W 10 | W 10 | W 9 | W 9 | W 8 | W 8 | WNW 8 | WNW 8 | WNW 10 | WNW 11 | W 10 | W 7 | WNW 7 | WNW 9 | WNW 14 | W 13 | WSW 7 | W 8 | W 11 | W 12 |
Wave Graph | |||||||||||||||||||||
512 | 432 | 262 | 230 | 181 | 63 | 374 | 450 | 618 | 754 | 672 | 468 | 312 | 292 | 669 | 1139 | 1003 | 448 | 817 | 941 | 1155 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-on | cross-on | on | on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-off | cross-off | cross-on | cross-on | cross-on |
High Tide | 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 | 10:05AM4.86m | 10:31PM4.52m | 11:00AM4.42m | 11:41PM4.13m | |||||||
Low Tide | 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 | 4:23PM1.89m | 4:45AM2.16m | 5:28PM2.29m | ||||||||
6:52 | — | — | 6:54 | — | — | 6:54 | — | — | 6:56 | — | — | 6:58 | — | — | 7:00 | — | — | 7:01 | — | — | |
— | 7:39 | — | — | 7:37 | — | — | 7:36 | — | — | 7:32 | — | — | 7:30 | — | — | 7:29 | — | — | 7:27 | — | |
mm | — | — | 1 | — | — | — | — | — | — | — | — | 2 | 1 | — | — | — | — | 3 | 2 | — | — |
Temp °C | 19 | 19 | 18 | 20 | 21 | 18 | 16 | 16 | 16 | 15 | 15 | 16 | 16 | 16 | 15 | 16 | 16 | 18 | 17 | 16 | 16 |
Feels °C | 17 | 18 | 18 | 19 | 19 | 17 | 11 | 10 | 12 | 10 | 10 | 12 | 11 | 10 | 10 | 12 | 11 | 13 | 11 | 9 | 11 |
Swell 1 Height (m) Direction Period (s) | SW 13 | SW 13 | W 10 | W 9 | W 9 | W 8 | S 11 | S 11 | S 11 | WNW 10 | WNW 11 | N 6 | N 5 | WNW 9 | WNW 16 | WNW 14 | W 13 | WNW 12 | W 8 | W 11 | W 12 |
7 | 7 | 262 | 230 | 181 | 63 | 2 | 2 | 2 | 754 | 672 | 25 | 2 | 110 | 147 | 1139 | 1003 | 167 | 817 | 941 | 1155 | |
Swell 2 Height (m) Direction Period (s) | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 | WNW 12 | S 11 | — | S 11 | — | S 13 | S 13 | — | — | S 13 | SW 12 | S 17 | S 16 | SW 16 | W 14 | SW 14 |
7 | 7 | 7 | 6 | 6 | 27 | 2 | — | 2 | — | 4 | 4 | — | — | 3 | 6 | 6 | 5 | 10 | 37 | 8 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | W 14 | SW 12 | — | — | — | — | — | — | — | — | — | S 18 | S 12 | — | — | SW 15 | S 11 |
— | — | — | — | 4 | 6 | — | — | — | — | — | — | — | — | — | 6 | 3 | — | — | 9 | 2 | |
Wind waves Height (m) Direction Period (s) | W 10 | W 10 | — | — | — | WSW 6 | W 8 | WNW 8 | WNW 8 | N 6 | N 6 | W 10 | W 7 | WNW 7 | WNW 9 | — | — | WSW 7 | — | — | — |
512 | 432 | — | — | — | 45 | 374 | 450 | 618 | 52 | 42 | 468 | 312 | 292 | 669 | — | — | 448 | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 15 | 21 | 15 | 15 | 15 | 15 | 320 | 222 | 103 | 103 | 213 | 506 | 222 | 222 | 155 | 56 | 213 | 508 | 213 | 214 | 197 |
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.










