Surf Forecasts:
St Agnes surf forecast from 5 Sep 2026:
- Best quality surf: Thursday 10 Sep, 7PM (local time) - 6.5ft (2.0m), 8s period, SW swell with cross-offshore winds.
- Most powerful swell: Monday 7 Sep, 7AM (local time) - 7.5ft (2.3m), 14s period, W swell with 2,066 kJ wave energy.
- Next surfable swell (1★+): Saturday 5 Sep, 7PM (local time) - 4ft (1.2m), 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 Saturday (Sep 05) at 7PM. The primary swell is predicted to be 1.2m 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 2.3m 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 0.8m 4s period and expected on Sunday (Sep 06) at 1PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7PM (Sat 5th Sep) | 4ft (1.2m) 11s |
| Best Surf | 7PM (Thu 10th Sep) | 6.5ft (2.0m) 8s |
| Most Powerful | 7AM (Mon 7th Sep) | 7.5ft (2.3m) 14s |
Table - best surf conditions forecast for St Agnes over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's have a look at what St Agnes has on offer.
Right off the bat, the first couple of days are looking pretty average, to be honest. We’ve got some knee to waist-high swell showing up on Saturday morning, but the wind is a bit of a mess, coming from the NW and making things choppy. The water temp is sitting at 64°, which is a touch warmer than normal for this time of year, so that’s something. The surf is there, but it’s not clean.
We hit a real flat spot from Sunday through to Wednesday. The swell drops right off and the wind keeps swinging around. Sunday morning actually has offshore wind, but the waves are barely a ripple at 3ft. The rest of that stretch is mostly onshore or cross-shore, with some pretty solid lumps of wind and not much wave energy to speak of. This is a period where you’re better off leaving the board at home.
Now, things finally start to look up on Thursday, the 10th of September. That’s when we get a bit of a pulse. The afternoon session is the standout of the whole run. We’ve got clean conditions with light cross-offshore breezes from the SW, and the swell fills in to a decent 6ft from the WSW. The period is a bit short at 7 seconds, but it’s got enough energy (304) to push in some fun, shapely walls. This is your best bet for the next week and a half.
There is another flicker of hope on Sunday the 13th. It's not as big, around 5ft from the WSW, but the wind goes totally glassy in the afternoon. That’s a beautiful thing for St Agnes, and the period stretches out to 10 seconds, giving the waves a bit more grunt. The combined energy is 334, which is solid. This would be a real treat if you can make it.
After that, the rest of the outlook is pretty slim pickings. We get a few days of smaller, cleaner waves around the 14th and 15th, but the swell is dropping. By the 19th and 20th, it’s back to tiny, weak waves with very little energy. The last few days are mostly onshore and not worth the paddle.
So, to sum it up: the clear winners here are Thursday the 10th afternoon for the best combination of size and cleanliness, and Sunday the 13th afternoon for that rare, glassy perfection.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Mon night. Warm (max 21°C on Sun morning, min 15°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummarySome drizzle, heaviest during Thu night. Very mild (max 17°C on Thu morning, min 14°C on Tue night). Winds increasing (calm on Wed night, fresh winds from the WNW by Thu night). | ||||||||||||||||||||
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 9 | W 9 | WNW 9 | WNW 8 | WNW 9 | W 8 | WSW 6 | WSW 7 | WSW 9 | W 8 | W 8 | W 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 730 | 415 | 190 | 106 | 74 | 417 | 1783 | 1292 | 1069 | 625 | 436 | 391 | 246 | 193 | 111 | 117 | 302 | 333 | 500 | 277 | 191 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | off | off | cross-off | cross-off | cross-on | cross | cross | cross-on | on | on | on | on | glassy | cross-off | cross-off | cross-off | cross-on | on | 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 | 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 | — | — | — | — | — | — | — | — | 4 | — | — | — | — | — | — | — | — | 1 | — | — | — |
Temp °C | 17 | 17 | 16 | 21 | 20 | 18 | 17 | 17 | 17 | 16 | 16 | 16 | 15 | 15 | 15 | 17 | 17 | 17 | 17 | 16 | 16 |
Feels °C | 16 | 14 | 15 | 17 | 17 | 18 | 13 | 12 | 13 | 13 | 12 | 12 | 11 | 12 | 14 | 15 | 14 | 13 | 12 | 11 | 11 |
Swell 1 Height (m) Direction Period (s) | WNW 12 | WNW 11 | W 10 | W 9 | W 9 | W 9 | W 13 | W 12 | SW 12 | W 9 | W 9 | WNW 9 | WNW 8 | W 9 | W 8 | WSW 6 | WSW 7 | WSW 9 | S 6 | W 8 | W 8 |
| kJ | 730 | 415 | 190 | 106 | 74 | 199 | 1783 | 1292 | 5 | 625 | 436 | 391 | 246 | 154 | 111 | 117 | 302 | 333 | 19 | 277 | 191 |
Swell 2 Height (m) Direction Period (s) | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SW 12 | W 16 | — | SW 12 | — | WSW 10 | SW 11 | SW 11 | — | WSW 8 | WSW 7 | — | W 11 | SSW 7 | — | S 6 | N 5 |
| kJ | 18 | 17 | 17 | 16 | 6 | 417 | — | 5 | — | 205 | 5 | 4 | — | 32 | 17 | — | 2 | 173 | — | 6 | 26 |
Swell 3 Height (m) Direction Period (s) | — | — | N 4 | — | W 20 | SW 12 | — | — | — | SW 11 | S 11 | S 11 | — | N 5 | N 5 | W 12 | — | — | — | S 16 | — |
| kJ | — | — | 1 | — | 8 | 6 | — | — | — | 5 | 2 | 2 | — | 11 | 4 | 3 | — | — | — | 5 | — |
Wind waves Height (m) Direction Period (s) | — | — | — | S 4 | S 4 | — | — | — | W 11 | — | — | — | N 5 | WNW 9 | — | — | — | — | W 8 | NNW 6 | — |
| kJ | — | — | — | 17 | 14 | — | — | — | 1069 | — | — | — | 11 | 193 | — | — | — | — | 500 | 85 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 15 | 15 | 0 | 209 | 21 | 0 | 153 | 56 | 197 | 27 | 23 | 28 | 28 | 201 | 0 | 0 | 0 | 38 | 222 | 222 | 103 |
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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