Surf Forecasts:
Kennack Sands surf forecast from 12 Sep 2026:
- Most powerful swell: Friday 18 Sep, 4AM (local time) - 0.5ft (0.1m), 18s period, S swell with 6 kJ wave energy.
Best Forecast Surf Conditions for Kennack Sands this week:
The most powerful waves expected at Kennack Sands in the next 16 days are 0.1m 18s and forecast to arrive on Friday (Sep 18) at 4AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.2m 10s period and expected on Wednesday (Sep 16) at 10AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4AM (Fri 18th Sep) | 0.5ft (0.1m) 18s |
Table - best surf conditions forecast for Kennack Sands over the next 16 days.
The Lowdown
Right then, it's Rusty here. Let's have a look at what's on offer for the next couple of weeks around Kennack Sands.
Honestly, it's a bit of a slow start. We've got a long stretch of nothing much happening for the first week and a half. From now all the way through to the 23rd of September, the swell is barely a whisper – we're talking ankle-biters at best. The combined energy is often in the single digits (12, 3, 4), which is about as weak as it gets, and the wave comment keeps calling it "poor surf conditions". That's a pretty solid run of flatness.
The only bright spot in that whole first week is that the water is a touch warmer than average, sitting at 64°F, but that won't help you catch a wave.
Finally, things look like they might kick off around the 25th of September. The swell jumps up a bit, but the quality is still questionable. On Friday the 25th, we see a 5ft to 6ft swell coming from the ESE, with a short period of 6 seconds, and it's blowing onshore with a fresh breeze. That’s a messy, blown-out combo with moderate energy (196-210). Not what you'd call a standout day for a paddle, but it could be more interesting for a kite surfer in that kind of wind.
Then, on the 26th of September, things clean up nicely. The wind swings offshore from the NW, and we have 4ft to 5ft of swell from the east. The period is still short at 6 seconds, which means weak, short lines, but with that offshore wind, it'll be clean. The energy is moderate (127-181). This is probably the best shot you'll get. The only break in the file is Kennack Sands.
Lastly, on the 27th of September, it holds in. Around 4ft to 5ft of east swell, period still 6 seconds, but offshore winds from the NW again. The wave comment finally says "surfable waves but very ordinary conditions", which is better than "poor"! The energy is solidly moderate (123-164). For a beach break like this, a short-period swell with offshore wind will give you some punchy, clean peaks, but don't expect any world-class barrels. Crowds are listed as "sometimes" for the spot, so you might have some company.
So, the only true windows here are the 26th and 27th of September. Take them while you can because there's a whole lot of nothing before and after.
Stay salty,
Rusty
Short Range ForecastMostly dry. Very mild (max 19°C on Sun afternoon, min 17°C on Mon night). Mainly fresh winds. | Days 5-7 Weather SummaryLight rain (total 3mm), mostly falling on Wed morning. Very mild (max 16°C on Tue afternoon, min 14°C on Tue night). Mainly fresh winds. | |||||||||||||||||||
Sat 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | ||||||||||||||
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) | S 15 | S 14 | W 10 | W 10 | S 13 | S 12 | S 12 | S 12 | S 11 | S 11 | S 11 | W 10 | W 11 | S 13 | S 13 | S 13 | S 13 | S 18 | S 18 | S 16 |
Wave Graph  | ||||||||||||||||||||
 kJ | 4 | 4 | 0 | 0 | 3 | 3 | 3 | 3 | 2 | 2 | 2 | 0 | 0 | 3 | 3 | 3 | 3 | 6 | 6 | 5 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | off | off | off | off | off | cross-off | off | off | off | cross-off | cross-off | cross |
High Tide | 6:22PM5.09m | 6:41AM4.89m | 6:58PM5.01m | 7:16AM4.81m | 7:33PM4.82m | 7:51AM4.64m | 8:08PM4.53m | 8:25AM4.38m | 8:44PM4.18m | 9:02AM4.05m | 9:23PM3.81m | 9:44AM3.70m | 10:12PM3.44m | |||||||
Low Tide | 1:08AM-0.15m | 1:23PM-0.04m | 1:43AM-0.01m | 1:58PM0.11m | 2:17AM0.23m | 2:33PM0.36m | 2:50AM0.54m | 3:07PM0.67m | 3:24AM0.88m | 3:44PM1.01m | 4:01AM1.22m | 4:27PM1.34m | ||||||||
 |  |  | | |  | | | | | |  | |  | | | | | | | |
 | — | — | 6:52 | — | — | 6:54 | — | — | 6:54 | — | — | 6:56 | — | — | 6:58 | — | — | 7:00 | — | — |
 | 7:42 | — | — | 7:38 | — | — | 7:37 | — | — | 7:35 | — | — | 7:32 | — | — | 7:30 | — | — | 7:28 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | 1 | — | 1 | 1 | — | — | — | — | — |
Temp °C | 18 | 18 | 18 | 19 | 19 | 19 | 19 | 18 | 17 | 16 | 16 | 15 | 15 | 16 | 16 | 16 | 15 | 16 | 17 | 18 |
Feels °C | 15 | 16 | 16 | 18 | 19 | 19 | 18 | 16 | 14 | 9 | 12 | 11 | 9 | 12 | 11 | 9 | 9 | 12 | 12 | 13 |
Swell 1 Height (m) Direction Period (s) | S 15 | W 10 | W 10 | W 10 | W 10 | W 9 | W 9 | W 8 | W 8 | S 11 | W 8 | W 10 | W 11 | W 10 | W 10 | W 9 | W 10 | W 13 | S 12 | W 12 |
| kJ | 4 | 674 | 522 | 434 | 307 | 194 | 181 | 133 | 351 | 2 | 505 | 1006 | 890 | 530 | 151 | 157 | 539 | 971 | 3 | 187 |
Swell 2 Height (m) Direction Period (s) | S 15 | S 14 | SW 13 | SW 13 | S 13 | S 12 | S 12 | W 12 | S 11 | — | S 11 | W 12 | — | S 13 | S 13 | S 13 | S 13 | S 12 | S 15 | S 16 |
| kJ | 4 | 4 | 7 | 7 | 3 | 3 | 3 | 25 | 2 | — | 2 | 98 | — | 3 | 3 | 3 | 3 | 3 | 4 | 5 |
Swell 3 Height (m) Direction Period (s) | S 15 | — | — | — | — | — | W 14 | S 12 | S 11 | — | S 11 | — | — | — | — | — | — | S 18 | S 18 | S 12 |
| kJ | 4 | — | — | — | — | — | 4 | 3 | 2 | — | 2 | — | — | — | — | — | — | 6 | 6 | 3 |
Wind waves Height (m) Direction Period (s) | W 8 | — | — | — | — | — | — | — | — | W 9 | WNW 8 | — | NNW 6 | — | W 6 | WNW 7 | — | — | W 13 | W 7 |
| kJ | 364 | — | — | — | — | — | — | — | — | 537 | 375 | — | 11 | — | 184 | 171 | — | — | 928 | 320 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 163 | 30 | 30 | 124 | 30 | 30 | 30 | 30 | 317 | 187 | 101 | 21 | 180 | 476 | 187 | 187 | 286 | 195 | 181 | 476 |
Best forecast wave conditions in South Cornwall | ||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||
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Information about the Kennack Sands Surf forecast
The above surf forecast table for Kennack Sands provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Kennack Sands can be found by selecting the local surf guide option on the grey menu. Our Kennack Sands 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 (Kennack Sands) 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 Kennack Sands 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.
Kennack Sands is 9 km (6 miles) from The Lizard. If you plan a holiday in South Cornwall, look for hotels and other accommodation in The Lizard. The Lizard has rooms for a wide range of budgets as well as car hire and transport links.
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