Surf Forecasts:
St Agnes surf forecast from 28 Aug 2026:
- Best quality surf: Wednesday 2 Sep, 1AM (local time) - 3ft (0.9m), 8s period, W swell with cross-offshore winds.
- Most powerful swell: Monday 31 Aug, 1AM (local time) - 11ft (3.5m), 10s period, W swell with 2,243 kJ wave energy.
- Next surfable swell (1★+): Wednesday 2 Sep, 1AM (local time) - 3ft (0.9m), 8s 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 Wednesday (Sep 02) at 1AM. The primary swell is predicted to be 0.9m and 8s period with a secondary swell of 0.1m and 16s. 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 3.5m 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 1.5m 6s period and expected on Friday (Aug 28) at 4PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Wed 2nd Sep) | 3ft (0.9m) 8s |
| Best Surf | 1AM (Wed 2nd Sep) | 3ft (0.9m) 8s |
| Most Powerful | 1AM (Mon 31st Aug) | 11ft (3.5m) 10s |
Table - best surf conditions forecast for St Agnes over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s look at what’s on the table for St Agnes for the next couple of weeks. Straight up, I gotta be honest with you – this is one of those outlooks where you might want to keep the board in the van for a while. The entire run is plagued by either strong, wonky winds or just cross-onshore junk that’s gonna turn the surface into a washing machine. There’s no standout session here, not really. We start off on Friday 28 August with rain and a moderate cross-shore chop on a tiny 4ft swell from the WSW, period a weak 6 seconds – it’s a no-go. The water’s sitting at 65°, which is a touch warmer than normal for this time of year, but that’s the only nice thing about it. The problem is the wind stays messy or too strong for days on end.
Moving into Saturday 29 August, the swell jumps up to 8ft in the morning from the SSW, with a cross-offshore wind that’s cranking 25 mph. The wave energy is moderate (720), but let me tell you, that wind speed is going to make paddling a fight, and the period is only 8 seconds – short-period wind swell. That afternoon it goes berserk with a 12ft swell from the WSW and a 28 mph cross-onshore. That’s expert-only territory and it’ll be a mess. Sunday 30 August looks a bit cleaner in the morning, with a 6ft swell from the WSW (period 9 seconds) and a moderate cross-offshore at 16 mph. The energy is moderate (475), but the combo of a solid swell with that offshore wind might just give you a few lined-up walls if you’re willing to take the risk. But honestly, the guidance still calls it poor, so don’t expect magic.
The first week of September looks bleak. Monday the 31st pumps up to 8ft from the west, but it’s cross-onshore with a fresh breeze. That’s just messy. Tuesday the 1st drops back to 4ft, but it’s still cross-onshore and choppy. There’s a gap here of several days with no real reason to paddle out. Wednesday 2 September morning has a tiny 3ft swell with clean cross-offshore wind, but it’s barely a ripple – wave energy is weak (121). Not worth the drive.
Things get a little more interesting from Thursday 3 September onward, with waist-to-chest-high swell around 7ft from the WSW, periods around 8-9 seconds. The wind goes cross-offshore on the Thursday afternoon and Friday afternoon, which is a step up. The wave energy sits in the moderate range (463-503), but the problem is every morning and afternoon still has a cross or onshore component that’ll keep it bumpy. No true glass-off here. Then Saturday 5 September brings a light onshore breeze and a dropping 4ft swell – not worth it.
We hit another lull through the second week, with swell dropping to 2ft or less, and on Sunday 6 September it’s barely breaking (energy just 85-90). There’s a brief pulse of 7ft on Monday 7 September from the west, but it’s cross-onshore again. Tuesday 8 September sees a fresh cross-shore that’s lumpy, and then it’s all downhill from there into tiny, wind-affected slop right through to Saturday 12 September. The periods get short (5-7 seconds) and the energy is weak.
So what’s the pick? Honestly, this is a tough one. If you really need to scratch the itch, your best bet is the Saturday 30 August morning session – that 6ft WSW swell with a moderate cross-offshore (clean) is the most balanced moment in the whole period. Or the Thursday 3 September or Friday 4 September afternoons, when that 7ft swell meets a cross-offshore breeze, giving you the best chance at a clean, lined-up wall. The period is 8-9 seconds, so it won’t be groundswell perfection, but it’ll be the least ugly of the bunch. Wear a hood if you can – it’ll be woolly out there.
Keep your expectations low. This is a quiet run for St Agnes, but forecasts can change, so don’t write it off completely. Stay salty.
Rusty.
Short Range ForecastHeavy rain (total 33mm), heaviest during Fri night. Very mild (max 19°C on Fri morning, min 16°C on Sat night). Mainly strong winds. | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Wed morning. Very mild (max 18°C on Tue afternoon, min 16°C on Mon afternoon). Winds increasing (light winds from the W on Tue night, fresh winds from the SW by Wed afternoon). | ||||||||||||||||||||
Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | |||||||||||||||
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 6 | WNW 8 | WNW 8 | SSW 8 | WSW 10 | WSW 9 | WSW 9 | WSW 8 | W 10 | W 9 | W 9 | W 10 | W 9 | W 8 | W 8 | WSW 8 | WSW 7 | W 8 | WSW 8 | WSW 8 | W 8 |
Wave Graph | |||||||||||||||||||||
91 | 14 | 12 | 720 | 2111 | 860 | 475 | 679 | 2243 | 1171 | 918 | 463 | 224 | 169 | 103 | 94 | 339 | 484 | 438 | 426 | 401 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-off | cross-off | cross-on | cross | cross-off | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-off | cross-off | cross-off | cross | cross | cross-off | cross-off |
High Tide | 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 | 9:41AM5.71m | 10:06PM5.53m | ||||||||
Low Tide | 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 | 3:57PM1.06m | ||||||||
6:28 | — | — | 6:28 | — | — | 6:31 | — | — | 6:31 | — | — | 6:33 | — | — | 6:35 | — | — | 6:37 | — | — | |
— | 8:15 | — | — | 8:13 | — | — | 8:09 | — | — | 8:07 | — | — | 8:06 | — | — | 8:04 | — | — | 8:01 | — | |
mm | 1 | 1 | 13 | 5 | — | — | 1 | 9 | 3 | — | — | — | — | — | — | 2 | 2 | — | — | — | — |
Temp °C | 19 | 18 | 18 | 19 | 18 | 17 | 19 | 18 | 17 | 17 | 17 | 16 | 17 | 18 | 17 | 18 | 18 | 18 | 20 | 20 | 19 |
Feels °C | 14 | 13 | 14 | 13 | 11 | 13 | 15 | 13 | 13 | 12 | 13 | 13 | 14 | 16 | 16 | 14 | 15 | 16 | 17 | 17 | 16 |
Swell 1 Height (m) Direction Period (s) | WNW 9 | WNW 8 | WNW 8 | — | — | WSW 9 | — | — | — | — | W 9 | W 10 | W 9 | W 8 | W 8 | SSW 16 | SSW 15 | SSW 15 | SSW 15 | SW 15 | SW 15 |
26 | 14 | 12 | — | — | 860 | — | — | — | — | 918 | 463 | 224 | 169 | 103 | 25 | 23 | 21 | 44 | 37 | 37 | |
Swell 2 Height (m) Direction Period (s) | SW 12 | SW 11 | SW 11 | — | — | NNW 6 | — | — | — | — | S 7 | N 5 | N 4 | SW 17 | SW 16 | S 10 | — | — | — | — | — |
5 | 5 | 5 | — | — | 33 | — | — | — | — | 24 | 4 | 1 | 12 | 10 | 2 | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | S 18 | SW 18 | S 12 | S 11 | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | 6 | 12 | 3 | 2 | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | WSW 6 | WSW 6 | WSW 6 | SSW 8 | WSW 10 | — | WSW 9 | WSW 8 | W 10 | W 9 | — | — | — | — | — | WSW 8 | WSW 7 | W 8 | WSW 8 | WSW 8 | W 8 |
91 | 144 | 112 | 720 | 2111 | — | 475 | 679 | 2243 | 1171 | — | — | — | — | — | 94 | 339 | 484 | 438 | 426 | 401 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 279 | 213 | 549 | 326 | 153 | 56 | 38 | 495 | 150 | 157 | 211 | 21 | 222 | 213 | 0 | 400 | 213 | 231 | 15 | 213 | 222 |
Best forecast wave conditions in North Cornwall | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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.











