Surf Forecasts:
St Agnes surf forecast from 28 Aug 2026:
- Best quality surf: Tuesday 1 Sep, 1AM (local time) - 5ft (1.5m), 10s period, W swell with cross-offshore winds.
- Most powerful swell: Saturday 29 Aug, 4PM (local time) - 11ft (3.5m), 10s period, WSW swell with 2,575 kJ wave energy.
- Next surfable swell (1★+): Tuesday 1 Sep, 1AM (local time) - 5ft (1.5m), 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 Tuesday (Sep 01) at 1AM. The primary swell is predicted to be 1.5m and 10s period. 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 Saturday (Aug 29) at 4PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 6s period and expected on Friday (Aug 28) at 4PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Tue 1st Sep) | 5ft (1.5m) 10s |
| Best Surf | 1AM (Tue 1st Sep) | 5ft (1.5m) 10s |
| Most Powerful | 4PM (Sat 29th Aug) | 11ft (3.5m) 10s |
Table - best surf conditions forecast for St Agnes over the next 16 days.
The Lowdown
Right then, let’s have a look at what’s on the cards for St Agnes over the next couple of weeks.
To be straight with you, the first week and a half is a bit of a write-off. There’s a lot of wind and messy conditions, with the swell energy either too weak or blown out. The combined swell energy is often in the low hundreds, which is weak to moderate at best. You’ll be staring at clean-looking lines but with a cross-off or even straight onshore wind, and the wave comments keep saying “poor surf conditions” – a few solid pulsey days in the mix on the 29th and 31st, but those 28 mph cross winds just ruin it. For a beach setup like this, that sort of wind is more interesting for kite surfing than paddling. The water temperature is sitting at 64°, which is a touch warmer than normal for the time of year – a nice bonus if you do get in the water.
Now, there is a turn. Keep your eyes on Monday the 7th of September. The morning session is a real standout. We’ve got a solid 12 ft swell from the WNW, and even though it’s a bit on the cross-on side, the wind is only a light 6 mph, so it’ll be glassy with just small wind ripples. The combined energy is a strong 1704 – that’s proper power. It’s a bit big for beginners, this one. The wave comment says “wind and tide favorable, but the swell is predicted to be too big for this break” – so this is for experienced crew only on the bigger sets.
Following that, Tuesday the 8th of September is looking very clean indeed. The morning has a 5 ft swell from the W with a nice 11-second period and a gentle cross-off breeze. The afternoon gets even better – offshore wind from the SSE at just 9 mph. That’s as clean as it gets, with the swell holding at 5 ft and a long 12-second period. The energy is moderate at 609. This is the session to circle on your calendar for a good, clean surf.
Beyond that, it trails off into average conditions again with cross-shore winds and dropping energy. So, to sum it up: suffer through the wind for the first week, then nail that Monday 7th and Tuesday 8th window.
Rusty.
Short Range ForecastHeavy rain (total 30mm), heaviest during Fri night. Warm (max 20°C on Fri morning, min 16°C on Thu night). Winds increasing (light winds from the WSW on Thu night, near gales from the W by Sat morning). | Days 4-6 Weather SummarySome drizzle, heaviest during Sun night. Very mild (max 18°C on Mon afternoon, min 15°C on Tue night). Winds decreasing (fresh winds from the WSW on Sun night, light winds from the NW by Wed morning). | ||||||||||||||||||||
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) | WNW 9 | WNW 8 | SW 6 | SW 8 | WSW 10 | W 9 | WSW 9 | WSW 8 | W 10 | W 10 | W 10 | W 10 | W 9 | W 8 | W 8 | WNW 6 | W 8 | WSW 5 | W 8 | W 8 | W 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 26 | 7 | 139 | 574 | 2575 | 996 | 592 | 733 | 2324 | 1454 | 864 | 407 | 188 | 142 | 157 | 60 | 115 | 72 | 420 | 464 | 509 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross-off | cross-off | cross-on | cross | cross-off | cross-off | cross | cross-on | cross-on | cross-off | cross-off | cross | cross-on | on | cross | cross-off | cross-off | cross | cross |
High Tide | 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 | 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 | — | — | 15 | 6 | 1 | — | 1 | 7 | 1 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 19 | 18 | 18 | 18 | 17 | 19 | 17 | 16 | 17 | 18 | 17 | 18 | 18 | 17 | 17 | 17 | 18 | 19 | 20 | 19 |
Feels °C | 15 | 13 | 15 | 10 | 11 | 13 | 15 | 12 | 10 | 12 | 15 | 15 | 15 | 15 | 15 | 15 | 14 | 15 | 17 | 17 | 16 |
Swell 1 Height (m) Direction Period (s) | WNW 9 | WNW 8 | WNW 8 | — | — | W 9 | — | N 6 | — | — | W 10 | W 10 | W 9 | SW 17 | SW 16 | WNW 6 | SW 15 | WNW 8 | SW 15 | SSW 15 | WNW 14 |
| kJ | 26 | 7 | 12 | — | — | 996 | — | 1 | — | — | 864 | 407 | 188 | 12 | 10 | 60 | 37 | 19 | 35 | 45 | 261 |
Swell 2 Height (m) Direction Period (s) | SW 12 | — | SW 11 | — | — | — | — | — | — | — | — | N 5 | N 5 | SW 17 | S 11 | W 8 | SW 10 | SSW 15 | S 9 | — | SW 15 |
| kJ | 5 | — | 5 | — | — | — | — | — | — | — | — | 7 | 2 | 12 | 2 | 42 | 4 | 21 | 2 | — | 37 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | S 18 | SW 18 | S 12 | S 11 | SSW 16 | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 6 | 12 | 3 | 2 | 25 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WSW 6 | WSW 6 | SW 6 | SW 8 | WSW 10 | — | WSW 9 | WSW 8 | W 10 | W 10 | — | — | — | W 8 | W 8 | — | W 8 | WSW 5 | W 8 | W 8 | W 8 |
| kJ | 88 | 196 | 139 | 574 | 2575 | — | 592 | 733 | 2324 | 1454 | — | — | — | 142 | 157 | — | 115 | 72 | 420 | 464 | 509 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 21 | 243 | 213 | 294 | 223 | 213 | 56 | 38 | 402 | 231 | 23 | 197 | 15 | 222 | 213 | 153 | 21 | 194 | 255 | 284 | 213 |
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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