Surf Forecasts:
Kennack Sands surf forecast from 13 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 2.5m 13s period and expected on Friday (Sep 18) at 7AM.
| 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
Alright, this is a tough one, mate. Honestly, looking at the whole 16-day window, there really isn’t anything worth paddling out for at Kennack Sands. It’s a flat spell with next to no surf on offer.
The first few days are a complete write-off. Sunday the 13th through to Thursday the 18th of September have either zero swell or just tiny 0.3ft waves coming from the south. The combined swell energy is basically nothing – we're talking single digits (0 to 9) – so you’re just bobbing around. The water is sitting at 64°, which is a touch warmer than normal for this time of year, but that’s the only plus.
There’s a bit of a tease around Friday the 25th of September when a short-period easterly swell pushes in, bumping up to 4ft with a combined energy of 144 – that’s moderate energy. But the wind is a fresh cross-onshore at 19 mph, and it’s lumpy as hell. The quality is poor, so it’s more of a messy, choppy mess than anything clean. That setup would look way more interesting for a kite surfer than a paddle surfer.
After that, it drops back down to fluff. The week following is just tiny 1ft to 2ft waves with onshore winds. There’s a long gap of nothing decent from the start right through until that brief, sloppy bump on the 25th. It’s pretty normal for this sheltered spot to go on a blank run like this when the swell direction isn’t right. Kennack needs a solid SSW swell to light up, and that just isn’t in the cards.
Keep the board in the car, but the forecasts can change. For now, it’s a no-go.
Rusty.
Short Range ForecastMostly dry. Very mild (max 19°C on Sun afternoon, min 14°C on Tue night). Mainly fresh winds. | Days 4-6 Weather SummarySome drizzle, heaviest during Thu morning. Very mild (max 17°C on Fri afternoon, min 15°C on Wed morning). Mainly fresh winds. | ||||||||||||||||||||
Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | |||||||||||||||
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) | W 10 | W 10 | S 13 | S 12 | W 9 | S 12 | S 11 | S 11 | S 11 | W 11 | W 11 | S 13 | W 7 | S 13 | S 13 | S 18 | S 17 | S 16 | S 16 | S 15 | S 11 |
Wave Graph  | |||||||||||||||||||||
 kJ | 0 | 0 | 3 | 3 | 0 | 3 | 2 | 2 | 2 | 0 | 0 | 4 | 0 | 3 | 3 | 6 | 6 | 5 | 5 | 4 | 2 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross-off | cross-off | cross | cross | off | off | off | off | off | cross-off | off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | off |
High Tide | 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 | 10:43AM3.38m | 11:31PM3.15m | ||||||||
Low Tide | 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 | 4:48AM1.53m | 5:23PM1.63m | ||||||||
 |  |  | |  |  | | | | | | |  | | | | | | | |  | |
 | 6:52 | — | — | 6:54 | — | — | 6:54 | — | — | 6:56 | — | — | 6:58 | — | — | 7:00 | — | — | 7:01 | — | — |
 | — | 7:38 | — | — | 7:37 | — | — | 7:35 | — | — | 7:32 | — | — | 7:30 | — | — | 7:28 | — | — | 7:25 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — |
Temp °C | 18 | 19 | 19 | 19 | 19 | 18 | 16 | 17 | 16 | 16 | 16 | 16 | 16 | 16 | 15 | 16 | 17 | 17 | 17 | 18 | 15 |
Feels °C | 16 | 17 | 19 | 18 | 18 | 16 | 10 | 11 | 12 | 11 | 10 | 12 | 11 | 9 | 9 | 12 | 13 | 13 | 13 | 15 | 12 |
Swell 1 Height (m) Direction Period (s) | W 10 | W 10 | W 10 | W 9 | W 9 | W 12 | S 11 | S 11 | W 9 | W 11 | W 11 | S 13 | W 10 | S 13 | S 13 | W 13 | W 13 | S 16 | W 11 | W 11 | W 10 |
| kJ | 524 | 434 | 307 | 235 | 181 | 25 | 2 | 2 | 723 | 1107 | 835 | 4 | 148 | 3 | 3 | 1561 | 1228 | 5 | 94 | 60 | 710 |
Swell 2 Height (m) Direction Period (s) | SW 13 | SW 13 | S 13 | S 12 | SW 12 | S 12 | S 11 | — | S 11 | — | — | — | — | — | — | S 12 | S 17 | S 12 | S 16 | S 15 | SW 14 |
| kJ | 7 | 7 | 3 | 3 | 6 | 3 | 2 | — | 2 | — | — | — | — | — | — | 3 | 6 | 3 | 5 | 4 | 8 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | W 14 | S 12 | — | — | — | — | — | — | — | — | — | S 18 | S 12 | S 12 | S 12 | S 11 | S 11 |
| kJ | — | — | — | — | 4 | 3 | — | — | — | — | — | — | — | — | — | 6 | 3 | 3 | 3 | 2 | 2 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | W 8 | W 8 | W 8 | — | — | — | W 10 | W 7 | W 8 | W 9 | — | — | W 12 | W 7 | W 8 | — |
| kJ | — | — | — | — | — | 165 | 386 | 443 | — | — | — | 520 | 279 | 501 | 777 | — | — | 957 | 261 | 418 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 30 | 30 | 30 | 30 | 30 | 30 | 187 | 187 | 101 | 64 | 181 | 182 | 523 | 251 | 251 | 195 | 181 | 195 | 195 | 181 | 64 |
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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