Surf Forecasts:
St Agnes surf forecast from 23 Aug 2026:
- Best quality surf: Thursday 27 Aug, 7AM (local time) - 5.5ft (1.7m), 8s period, SSW swell with offshore winds.
- Most powerful swell: Saturday 29 Aug, 10AM (local time) - 8ft (2.5m), 8s period, WNW swell with 735 kJ wave energy.
- Next surfable swell (1★+): Tuesday 25 Aug, 7PM (local time) - 2ft (0.6m), 10s period with WNW 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 25) at 7PM. The primary swell is predicted to be 0.6m and 10s period with a secondary swell of 0.5m and 8s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at St Agnes in the next 16 days are 2.5m 8s and forecast to arrive on Saturday (Aug 29) at 10AM. 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 7PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7PM (Tue 25th Aug) | 2ft (0.6m) 10s |
| Best Surf | 7AM (Thu 27th Aug) | 5.5ft (1.7m) 8s |
| Most Powerful | 10AM (Sat 29th Aug) | 8ft (2.5m) 8s |
Table - best surf conditions forecast for St Agnes over the next 16 days.
The Lowdown
Alright, let’s break down the next 16 days for St Agnes.
Honestly, it’s a pretty flat and frustrating run. The first real surfable option doesn’t show up until Wednesday morning, the 26th of August, and even then it’s tiny and ordinary. After that, there’s a bit of a pulse mid-period, but it’s mostly ruined by messy wind. There’s a long gap of poor surf from the 28th through to the 6th of September. The standout is a short window on Sunday the 30th of August, but you’ll need to be careful with the size.
The first chance to get wet is on Wednesday morning, 26th August. It’s small, with a weak 2 ft swell from the west, but the wind is clean offshore from the south at 9 mph. The combined energy is only 63 (weak), so it’s not going to be powerful, but it’ll be clean and glassy. Water temperature is sitting at 64°, which is about a degree warmer than average for this time of year.
The one true standout is Sunday afternoon, 30th August. We see a jump in swell to 7 ft from the southwest, with a short period of 7 seconds. The combined energy hits 818 (strong). The wind is cross-off from the south-southwest at 12 mph, so it’ll be clean. At 7 ft, this is getting into the bigger range, so it’s more suited to experienced surfers. The short period means it’ll be a bit fat and won’t have that groundswell punch.
The rest of the window is a write-off. Thursday the 27th has some size (6 ft) but the wind is messy. From the 28th through to the 6th of September, the wind is either onshore, cross, or too strong. The 7th of September morning has a tiny 4 ft west swell with light wind, but it’s cross-off and the conditions are just “very ordinary.”
If you’re a beginner, wait for the smaller cleaner days like Wednesday the 26th. If you’re experienced, Sunday the 30th is your best shot, but keep an eye on the wind. It’s a lean period, but it tends not to stay this way for long.
Rusty.
Short Range ForecastMostly dry. Warm (max 21°C on Tue morning, min 16°C on Sun night). Winds increasing (light winds from the ENE on Sun morning, fresh winds from the E by Mon morning). | Days 4-6 Weather SummaryHeavy rain (total 20mm), heaviest during Wed night. Warm (max 21°C on Wed morning, min 15°C on Thu night). Winds increasing (light winds from the SW on Thu night, fresh winds from the W by Fri afternoon). | ||||||||||||||||||||
Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | |||||||||||||||
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) | SW 14 | SW 14 | SW 14 | SSW 14 | SW 13 | WNW 11 | WNW 10 | WNW 10 | W 9 | W 8 | W 8 | SSW 6 | SSW 8 | SSW 9 | SW 8 | SSW 7 | W 8 | W 6 | WNW 8 | WNW 8 | W 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 51 | 54 | 38 | 19 | 28 | 24 | 58 | 75 | 59 | 49 | 31 | 121 | 402 | 407 | 188 | 66 | 136 | 206 | 735 | 663 | 376 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross-off | cross-off | cross | cross-off | cross-off | off | off | off | off | cross-off | cross-off | cross-off | cross | cross | cross-on | cross-on | cross-on | cross |
High Tide | 2:47PM4.35m | 3:25AM4.40m | 3:52PM4.70m | 4:18AM4.77m | 4:39PM5.13m | 4:59AM5.18m | 5:16PM5.57m | 5:34AM5.56m | 5:50PM5.96m | 6:07AM5.90m | 6:22PM6.27m | 6:39AM6.16m | 6:54PM6.48m | ||||||||
Low Tide | 9:20PM2.18m | 9:47AM2.05m | 10:19PM1.81m | 10:37AM1.64m | 11:02PM1.39m | 11:16AM1.23m | 11:39PM0.98m | 11:50AM0.85m | 00:12AM0.64m | 12:23PM0.55m | 00:44AM0.38m | 12:55PM0.34m | 1:15AM0.22m | ||||||||
 | |  |  | | | |  |  | | |  |  | |  | |  | | | | | |
 | 6:20 | — | — | 6:22 | — | — | 6:22 | — | — | 6:24 | — | — | 6:26 | — | — | 6:28 | — | — | 6:28 | — | — |
 | — | 8:24 | — | — | 8:22 | — | — | 8:21 | — | — | 8:19 | — | — | 8:16 | — | — | 8:15 | — | — | 8:13 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | 13 | 1 | 3 | 1 | 1 | 1 | — | — | — | — |
Temp °C | 19 | 19 | 17 | 20 | 20 | 18 | 21 | 20 | 17 | 21 | 21 | 18 | 19 | 18 | 16 | 19 | 19 | 17 | 17 | 18 | 17 |
Feels °C | 16 | 16 | 15 | 13 | 13 | 13 | 16 | 16 | 15 | 18 | 18 | 15 | 16 | 14 | 14 | 15 | 15 | 12 | 12 | 12 | 12 |
Swell 1 Height (m) Direction Period (s) | N 5 | N 4 | WSW 10 | N 4 | SW 13 | SE 7 | WNW 10 | WNW 10 | W 9 | W 8 | W 8 | SSW 6 | W 8 | SSW 9 | SW 8 | SSW 7 | SSW 7 | SSW 7 | — | — | S 11 |
| kJ | 16 | 6 | 38 | 3 | 28 | 25 | 58 | 75 | 59 | 49 | 31 | 121 | 20 | 407 | 188 | 66 | 62 | 79 | — | — | 2 |
Swell 2 Height (m) Direction Period (s) | SW 14 | WSW 12 | SE 6 | SSW 14 | W 9 | WNW 11 | NNE 5 | SSW 8 | SW 8 | SW 7 | SSW 7 | W 8 | WNW 10 | W 10 | WNW 10 | W 7 | SW 11 | S 11 | — | — | — |
| kJ | 51 | 54 | 8 | 19 | 6 | 24 | 7 | 28 | 32 | 14 | 10 | 18 | 11 | 51 | 80 | 38 | 5 | 2 | — | — | — |
Swell 3 Height (m) Direction Period (s) | W 9 | SW 14 | SW 14 | WSW 9 | SW 9 | SSW 13 | SW 8 | NNE 5 | NNE 5 | N 5 | N 6 | SW 12 | — | SW 10 | S 12 | W 9 | — | — | — | — | — |
| kJ | 14 | 49 | 32 | 8 | 3 | 17 | 11 | 5 | 2 | 2 | 3 | 6 | — | 38 | 3 | 42 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | E 4 | ESE 5 | N 4 | ESE 7 | ESE 7 | NE 3 | ESE 7 | SE 4 | S 4 | SW 4 | S 4 | ESE 3 | SSW 8 | — | — | — | W 8 | W 6 | WNW 8 | WNW 8 | W 7 |
| kJ | 5 | 27 | 6 | 85 | 94 | 3 | 37 | 12 | 6 | 15 | 16 | 2 | 402 | — | — | — | 136 | 206 | 735 | 663 | 376 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1 | 1 | 5 | 384 | 224 | 197 | 6 | 8 | 0 | 0 | 78 | 15 | 38 | 15 | 0 | 103 | 243 | 556 | 578 | 213 | 199 |
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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