Surf Forecasts:
St Agnes surf forecast from 27 Aug 2026:
- Best quality surf: Sunday 30 Aug, 4AM (local time) - 7.5ft (2.3m), 9s period, W swell with cross-offshore winds.
- Most powerful swell: Monday 31 Aug, 1AM (local time) - 10ft (3.0m), 10s period, W swell with 1,765 kJ wave energy.
- Next surfable swell (1★+): Thursday 27 Aug, 10PM (local time) - 3ft (0.9m), 6s period with SSW 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 Thursday (Aug 27) at 10PM. The primary swell is predicted to be 0.9m and 6s period with a secondary swell of 0.5m and 9s. Another secondary swell of 0.2m and 7s is also forecast. 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 3.0m 10s and forecast to arrive on Monday (Aug 31) at 1AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 6s period and expected on Friday (Aug 28) at 10AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Thu 27th Aug) | 3ft (0.9m) 6s |
| Best Surf | 4AM (Sun 30th Aug) | 7.5ft (2.3m) 9s |
| Most Powerful | 1AM (Mon 31st Aug) | 10ft (3.0m) 10s |
Table - best surf conditions forecast for St Agnes over the next 16 days.
The Lowdown
Alright, let’s get this sorted. The next couple of weeks here at St Agnes are looking pretty bleak, to be honest. We’ve got a stormy, messy stretch ahead for the most part, with the wind and the swell just not lining up. It’s going to be one of those periods where you’re better off tinkering with your boards or going for a hike, because the ocean’s going to be in a foul mood for a while.
There’s a solid run of poor conditions through the end of August and into the first week of September. We’ll see some size, sure, but it'll be bumpy, cross-onshore slop for the most part. The energy picks up into Saturday the 29th and Sunday the 30th with a lot of strong, cross-off wind, but the wave quality is just not there. We’re talking about a lumpy, jumbled mess with a strong breeze and thick swell – not what we want.
The first real window of hope arrives on Saturday the 5th of September. That’s when the conditions finally line up. The wind is going to be almost dead – a light E/SE breeze, basically glassy. There’s a decent combo of swells filling in, pushing the size up around 8ft to 12ft. Saturday morning looks excellent for skilled surfers – the wave quality will be far and away the best we’ve seen in this whole stretch, with a long-period W/SW swell in the water. The energy is going to be strong, with the combined swell energy reading around 1890 (strong). That is the standout session. It’s going to be big and powerful. If you’re not comfortable in serious waves, this is not the time to learn. Afternoon looks to be a touch too big for the break, so morning will be your best bet.
The following day, Sunday the 6th, still has some good energy in the water, but the wind swings more to the SW and picks up, making things a bit more challenging. It's still surfable, but not as clean. After that, the window closes again as winds go onshore or straight on, and conditions become pretty average for the entire following week. The swell will be around, but the wind and poor quality will keep the scores low.
So, to sum it up: your best chance by far is the early morning of Saturday the 5th. It’s the one true standout in this forecast. Everything else until then is just a write-off. The water temp is sitting at a touch warmer than normal for this time of year, which is a small silver lining.
Rusty
Short Range ForecastModerate rain (total 10mm), heaviest on Fri night. Warm (max 20°C on Thu morning, min 16°C on Thu night). Winds decreasing (strong winds from the SW on Sat morning, light winds from the SW by Sat night). | Days 4-6 Weather SummaryLight rain (total 7mm), mostly falling on Sun afternoon. Warm (max 20°C on Sun morning, min 15°C on Tue night). Winds decreasing (fresh winds from the SSW on Sun morning, light winds from the SW by Tue night). | ||||||||||||||||||||
Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | |||||||||||||||
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) | SSW 6 | SSW 6 | SW 6 | WNW 9 | WSW 7 | SW 6 | SW 7 | W 9 | W 9 | W 9 | WSW 8 | W 10 | W 10 | W 9 | W 9 | W 9 | W 9 | W 8 | W 8 | W 8 | SSW 15 |
Wave Graph  | |||||||||||||||||||||
 kJ | 40 | 53 | 80 | 16 | 401 | 203 | 573 | 1629 | 1157 | 459 | 620 | 1765 | 1478 | 840 | 349 | 258 | 251 | 190 | 124 | 72 | 21 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross | cross-off | cross-off | cross | cross | cross-off | cross-off | cross-on | cross-on | cross-on | cross-off | cross | cross-on | cross-on | cross-off | cross-off | cross |
High Tide | 5:50PM5.96m | 6:07AM5.90m | 6:22PM6.27m | 6:39AM6.16m | 6:54PM6.48m | 7:11AM6.32m | 7:27PM6.57m | 7:44AM6.37m | 8:01PM6.51m | 8:19AM6.28m | 8:38PM6.31m | 8:58AM6.06m | 9:19PM5.97m | ||||||||
Low Tide | 11:50AM0.85m | 00:12AM0.64m | 12:23PM0.55m | 00:44AM0.38m | 12:55PM0.34m | 1:15AM0.22m | 1:27PM0.24m | 1:47AM0.20m | 1:59PM0.27m | 2:20AM0.30m | 2:34PM0.42m | 2:55AM0.54m | 3:12PM0.69m | 3:35AM0.89m | |||||||
 | |  | |  | |  | |  | |  |  |  | | | | | | | | | |
 | 6:26 | — | — | 6:28 | — | — | 6:28 | — | — | 6:31 | — | — | 6:31 | — | — | 6:33 | — | — | 6:35 | — | — |
 | — | 8:16 | — | — | 8:15 | — | — | 8:13 | — | — | 8:09 | — | — | 8:07 | — | — | 8:06 | — | — | 8:04 | — |
mm | — | — | 1 | — | 2 | 7 | — | — | — | 1 | 4 | 1 | — | — | — | — | 1 | — | — | — | — |
Temp °C | 20 | 20 | 16 | 19 | 18 | 18 | 19 | 19 | 17 | 20 | 17 | 16 | 16 | 17 | 16 | 18 | 17 | 16 | 19 | 18 | 19 |
Feels °C | 18 | 17 | 14 | 14 | 15 | 14 | 12 | 12 | 13 | 14 | 13 | 11 | 12 | 14 | 15 | 14 | 14 | 13 | 16 | 14 | 15 |
Swell 1 Height (m) Direction Period (s) | SSW 6 | W 10 | W 9 | WNW 9 | — | WNW 8 | — | — | W 9 | W 9 | N 5 | — | — | W 9 | W 9 | W 9 | SW 17 | SW 16 | W 8 | W 8 | WNW 7 |
| kJ | 40 | 47 | 41 | 16 | — | 6 | — | — | 1157 | 459 | 1 | — | — | 840 | 349 | 258 | 12 | 10 | 124 | 72 | 18 |
Swell 2 Height (m) Direction Period (s) | W 8 | SE 5 | SW 12 | SW 11 | — | — | — | — | — | — | — | — | — | — | SSW 6 | SW 18 | S 12 | S 11 | SSW 16 | SW 15 | SSW 15 |
| kJ | 20 | 1 | 5 | 5 | — | — | — | — | — | — | — | — | — | — | 7 | 12 | 3 | 2 | 25 | 37 | 21 |
Swell 3 Height (m) Direction Period (s) | SE 5 | — | — | — | — | — | — | — | — | — | — | — | — | — | S 18 | — | — | — | SW 10 | SW 10 | N 6 |
| kJ | 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | 6 | — | — | — | 4 | 4 | 2 |
Wind waves Height (m) Direction Period (s) | — | SSW 6 | SW 6 | WSW 6 | WSW 7 | SW 6 | SW 7 | W 9 | — | SSW 7 | WSW 8 | W 10 | W 10 | — | — | — | W 9 | W 8 | — | — | WSW 4 |
| kJ | — | 53 | 80 | 173 | 401 | 203 | 573 | 1629 | — | 79 | 620 | 1765 | 1478 | — | — | — | 251 | 190 | — | — | 13 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 21 | 21 | 213 | 284 | 211 | 243 | 283 | 56 | 211 | 393 | 150 | 155 | 231 | 0 | 222 | 758 | 213 | 20 | 245 | 546 |
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.
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