Surf Forecasts:
St Agnes surf forecast from 8 Aug 2026:
- Best quality surf: Tuesday 11 Aug, 10PM (local time) - 1.5ft (0.5m), 11s period, W swell with cross-offshore winds.
- Most powerful swell: Thursday 13 Aug, 10AM (local time) - 4ft (1.2m), 11s period, W swell with 319 kJ wave energy.
- Next surfable swell (1★+): Tuesday 11 Aug, 10PM (local time) - 1.5ft (0.5m), 11s 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 (Aug 11) at 10PM. The primary swell is predicted to be 0.5m and 11s period with a secondary swell of 0.3m and 7s. 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 1.2m 11s and forecast to arrive on Thursday (Aug 13) at 10AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 7s period and expected on Wednesday (Aug 12) at 1PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Tue 11th Aug) | 1.5ft (0.5m) 11s |
| Best Surf | 10PM (Tue 11th Aug) | 1.5ft (0.5m) 11s |
| Most Powerful | 10AM (Thu 13th Aug) | 4ft (1.2m) 11s |
Table - best surf conditions forecast for St Agnes over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s dig into what St Agnes has in store for us over the next couple of weeks. Gotta be honest – it’s a quiet stretch overall. A lot of waiting before we get anything worth paddling out for.
Things start off tiny. From Saturday the 8th right through until around Tuesday the 12th, it’s all small windswell with mostly cross or onshore breezes. The energy is weak – as low as 40 on that first Saturday. Water temp is about 65°, which is a touch warmer than normal for this time of year, so at least the waiting won’t be a cold one.
We finally see a glimmer on Wednesday the 12th afternoon. A west swell at 3 ft, with a period of 9 seconds and a light offshore breeze from the east. Energy climbs to 136, and conditions turn clean. It’s nothing special, just surfable and very ordinary, but it’s something. Thursday the 13th morning pushes up to 4 ft from the west with an 11-second period, energy hitting 322 – but the wind swings onshore from the north-northwest, chopping it all up. Frustrating.
The real highlight, and I mean the only one that gets me excited, lands on Wednesday the 19th. That morning we get a solid pulse: 6 ft out of the west, with a period of 7 seconds. Combined energy is a strong 300, and we’ve got a gentle offshore breeze from the northwest. Clean, powerful, and a bit much for beginners – but for the experienced surfers, that’s your morning. Thursday the 20th stays big at 5 ft from the west-northwest, but the wind is more onshore. Wednesday is your window.
After that, it fades back into messy conditions. Friday the 21st and Saturday the 22nd are mostly cross-onshore and lumpy. Then on Sunday the 23rd, we get a final clean moment: a gentle southeast offshore breeze with 2 ft of west swell. Small, but glassy and clean if you want a longboard cruise.
So here’s the take: a long, dry run of over a week, then one solid morning on Wednesday the 19th. That’s the standout. Keep an eye on that day, and if the wind plays ball, you’ll have a proper session.
Stay thirsty,
Rusty
Short Range ForecastMostly dry. Warm (max 22°C on Tue morning, min 16°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 26°C on Wed afternoon, min 18°C on Tue night). Wind will be generally light. | |||||||||||||||||||
Sat 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | ||||||||||||||
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 10 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | NW 5 | WNW 8 | W 8 | WNW 8 | W 13 | W 11 | W 10 | W 9 | W 9 | W 11 | W 10 | W 10 | W 9 | W 8 | W 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 31 | 28 | 26 | 25 | 26 | 34 | 22 | 33 | 20 | 13 | 116 | 158 | 136 | 169 | 319 | 282 | 184 | 126 | 89 | 132 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-off | cross-off | cross-off | cross | cross-off | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 2:09AM4.95m | 2:49PM5.12m | 3:28AM5.21m | 4:00PM5.54m | 4:32AM5.62m | 4:57PM6.03m | 5:25AM6.02m | 5:47PM6.47m | 6:11AM6.33m | 6:31PM6.76m | 6:54AM6.50m | 7:13PM6.86m | ||||||||
Low Tide | 7:59PM1.68m | 8:42AM1.63m | 9:25PM1.41m | 9:58AM1.29m | 10:34PM0.96m | 10:59AM0.85m | 11:30PM0.50m | 11:49AM0.44m | 00:17AM0.14m | 12:34PM0.15m | 1:00AM-0.06m | 1:15PM0.01m | 1:40AM-0.08m | |||||||
 |  |  | | | | | | | | | | | | | |  | | | | |
 | — | — | 5:58 | — | — | 6:01 | — | — | 6:01 | — | — | 6:03 | — | — | 6:05 | — | — | 6:07 | — | — |
 | 8:52 | — | — | 8:52 | — | — | 8:50 | — | — | 8:47 | — | — | 8:45 | — | — | 8:44 | — | — | 8:43 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 18 | 20 | 20 | 17 | 17 | 18 | 19 | 22 | 22 | 20 | 25 | 26 | 22 | 21 | 21 | 19 | 20 | 19 | 18 |
Feels °C | 19 | 18 | 18 | 18 | 16 | 16 | 15 | 18 | 17 | 17 | 17 | 22 | 23 | 20 | 18 | 19 | 19 | 20 | 17 | 17 |
Swell 1 Height (m) Direction Period (s) | WNW 10 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | NW 5 | WNW 5 | N 4 | WNW 8 | WNW 7 | W 11 | W 10 | W 9 | W 9 | W 11 | W 10 | W 10 | W 9 | W 8 | W 8 |
| kJ | 31 | 28 | 26 | 25 | 26 | 34 | 9 | 9 | 20 | 11 | 116 | 158 | 136 | 169 | 319 | 282 | 184 | 126 | 89 | 132 |
Swell 2 Height (m) Direction Period (s) | WSW 6 | SSE 4 | WSW 6 | WSW 6 | SW 7 | SW 6 | WNW 8 | W 8 | N 4 | W 9 | SW 6 | ESE 5 | E 5 | WNW 12 | E 5 | E 5 | N 3 | S 13 | S 13 | SW 13 |
| kJ | 4 | 1 | 4 | 4 | 16 | 14 | 22 | 33 | 1 | 7 | 1 | 2 | 2 | 29 | 14 | 8 | 1 | 3 | 3 | 7 |
Swell 3 Height (m) Direction Period (s) | SW 11 | WSW 7 | SW 12 | SW 12 | SW 12 | WNW 8 | SW 6 | SW 7 | SW 6 | W 13 | SW 12 | SW 6 | — | SE 5 | — | S 11 | S 11 | S 13 | — | — |
| kJ | 5 | 4 | 6 | 6 | 6 | 24 | 15 | 7 | 6 | 13 | 6 | 1 | — | 1 | — | 2 | 2 | 3 | — | — |
Wind waves Height (m) Direction Period (s) | SE 4 | — | — | — | WNW 4 | — | N 4 | — | SE 3 | ESE 3 | SE 5 | E 6 | — | — | N 3 | NNW 3 | WNW 3 | — | — | — |
| kJ | 4 | — | — | — | 14 | — | 9 | — | 2 | 8 | 7 | 39 | — | — | 3 | 3 | 2 | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 28 | 27 | 400 | 222 | 222 | 27 | 222 | 27 | 385 | 222 | 0 | 1 | 0 | 6 | 28 | 213 | 15 | 15 | 213 | 148 |
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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