
Surf Forecasts:
St Agnes surf forecast from 5 Sep 2026:
- Best quality surf: Saturday 5 Sep, 4PM (local time) - 4.5ft (1.3m), 11s period, WNW swell with cross-offshore winds.
- Most powerful swell: Monday 7 Sep, 7AM (local time) - 8ft (2.4m), 14s period, W swell with 2,089 kJ wave energy.
- Next surfable swell (1★+): Saturday 5 Sep, 4PM (local time) - 4.5ft (1.3m), 11s period with WNW 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 05) at 4PM. The primary swell is predicted to be 1.3m and 11s period with a secondary swell of 0.2m 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 2.4m 14s and forecast to arrive on Monday (Sep 07) 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 0.7m 4s period and expected on Sunday (Sep 06) at 7AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4PM (Sat 5th Sep) | 4.5ft (1.3m) 11s |
| Best Surf | 4PM (Sat 5th Sep) | 4.5ft (1.3m) 11s |
| Most Powerful | 7AM (Mon 7th Sep) | 8ft (2.4m) 14s |
Table - best surf conditions forecast for St Agnes over the next 16 days.
The Lowdown
Alright, let’s get into it. This is Rusty, and I’m looking at the surf forecast for St Agnes.
First up, we’ve got a bit of a slow start, but there’s a window of cleaner surf early on. Saturday the 5th of September is the first real chance to get wet. The morning’s a bit average with a 5ft swell from the WNW, period around 12 seconds, and a light cross-on breeze putting some ripples on the face. The combined energy is moderate (665). Not terrible, but the tide and that wind state are making it a tough call. The afternoon cleans up nicely though – the wind swings to a light cross-off, swell drops to 4ft with a solid 11-second period, and the energy is still decent (432). The report says “good surf conditions,” and I’d say for a Saturday arvo, that’s your best bet early on. It’s a fairly consistent break, so expect a few others out there, especially with the crowds described as “often.”
Sunday morning the 6th has a tiny 2ft swell and a fresh offshore breeze, but with only 97 energy, it’s honestly barely breaking. By Sunday afternoon, it’s even smaller.
Then we get a pulse. Monday the 7th of September brings a decent swell – 8ft from the W with a 13-second period, pushing energy right up to 1942. That’s strong wave energy. The problem is the wind: moderate cross-shore and a cross-chop. It’s not clean, and the report flags it as marginal. This is a wave that’s more for experienced surfers; at 8ft, it’s already pushing into the “too big for beginners” territory. The quality is questionable, so don’t expect a perfect session.
The rest of the first week and into the second week is a write-off. From Tuesday the 8th of September right through to Sunday the 20th of September, every single entry is marked as “poor surf conditions.” The swell drops off, the wind is messy, and the energy levels are low – mostly under 500. There’s a few days with a bit of size, like Wednesday the 9th with 5ft and Thursday the 10th with 7ft, but the wind is cross or cross-on and the period is short, creating a lumpy, choppy mess. It’s not going to be worth the paddle. Honestly, for a stretch of nearly two weeks, there’s just nothing on offer.
So, to wrap it up: your best bet is the afternoon of Saturday the 5th of September. It’s not a world-beater, but it’s the cleanest, most rideable wave in the whole forecast. The rest of the 16-day window? A long, flat, and windy gap. The water temperature is about average for the time of year, so no surprises there.
Rusty.
Short Range ForecastMostly dry. Warm (max 22°C on Sun morning, min 16°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 3mm), mostly falling on Mon night. Very mild (max 19°C on Thu morning, min 15°C on Mon night). Mainly fresh winds. | ||||||||||||||||||||
Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | |||||||||||||||
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) | WNW 12 | WNW 11 | W 10 | W 9 | W 9 | W 16 | W 13 | W 12 | W 11 | W 10 | W 10 | WNW 8 | WNW 7 | W 8 | W 6 | W 7 | W 8 | W 10 | W 9 | W 9 | W 8 |
Wave Graph | |||||||||||||||||||||
647 | 415 | 190 | 81 | 55 | 326 | 1942 | 1505 | 1271 | 569 | 830 | 494 | 245 | 208 | 127 | 434 | 470 | 838 | 480 | 389 | 333 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-off | off | off | cross-off | cross | cross | cross | cross-on | cross | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross | cross-on | cross-on | cross-on |
High Tide | 11:43AM4.91m | 00:30AM4.71m | 1:16PM4.78m | 2:07AM4.73m | 2:47PM5.05m | 3:27AM5.10m | 3:55PM5.55m | 4:25AM5.59m | 4:47PM6.06m | 5:12AM6.03m | 5:31PM6.48m | 5:53AM6.36m | 6:11PM6.74m | ||||||||
Low Tide | 5:30AM1.73m | 6:18PM1.81m | 7:05AM1.94m | 8:02PM1.80m | 8:43AM1.76m | 9:28PM1.42m | 9:55AM1.32m | 10:29PM0.91m | 10:49AM0.82m | 11:18PM0.45m | 11:34AM0.41m | 11:59PM0.11m | 12:14PM0.13m | 00:37AM-0.05m | |||||||
6:39 | — | — | 6:41 | — | — | 6:43 | — | — | 6:45 | — | — | 6:46 | — | — | 6:48 | — | — | 6:48 | — | — | |
— | 7:58 | — | — | 7:54 | — | — | 7:52 | — | — | 7:51 | — | — | 7:49 | — | — | 7:46 | — | — | 7:44 | — | |
mm | — | — | — | — | — | — | — | — | 3 | — | — | — | — | — | — | — | — | — | — | — | 5 |
Temp °C | 17 | 18 | 16 | 22 | 20 | 19 | 17 | 17 | 16 | 17 | 16 | 16 | 17 | 17 | 17 | 19 | 19 | 17 | 17 | 16 | 15 |
Feels °C | 16 | 16 | 15 | 18 | 17 | 17 | 13 | 13 | 12 | 11 | 10 | 10 | 12 | 12 | 15 | 17 | 17 | 17 | 14 | 12 | 13 |
Swell 1 Height (m) Direction Period (s) | WNW 12 | WNW 11 | W 10 | W 9 | W 9 | W 16 | W 13 | SW 12 | W 11 | WNW 10 | S 11 | WNW 11 | WNW 10 | N 5 | WNW 9 | W 12 | — | W 10 | W 9 | S 16 | W 6 |
647 | 415 | 190 | 81 | 55 | 326 | 1942 | 5 | 1271 | 163 | 2 | 128 | 71 | 13 | 16 | 11 | — | 838 | 480 | 5 | 182 | |
Swell 2 Height (m) Direction Period (s) | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SW 12 | S 5 | — | — | SW 11 | WNW 12 | — | S 11 | S 10 | WNW 10 | N 5 | N 6 | — | — | — | — | — |
18 | 17 | 17 | 16 | 6 | 7 | — | — | 5 | 29 | — | 2 | 2 | 38 | 4 | 1 | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | N 4 | — | W 20 | SW 12 | — | — | — | S 11 | — | — | W 15 | S 10 | W 13 | — | — | — | — | — | — |
— | — | 1 | — | 7 | 6 | — | — | — | 2 | — | — | 4 | 2 | 3 | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | SSE 2 | SSE 4 | S 4 | W 9 | — | W 12 | — | W 10 | W 10 | WNW 8 | WNW 7 | W 8 | W 6 | W 7 | W 8 | — | — | W 9 | W 8 |
— | — | 1 | 20 | 10 | 157 | — | 1505 | — | 569 | 830 | 494 | 245 | 208 | 127 | 434 | 470 | — | — | 389 | 333 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 15 | 0 | 0 | 117 | 209 | 15 | 555 | 56 | 56 | 56 | 213 | 286 | 399 | 213 | 213 | 213 | 213 | 56 | 103 | 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.










