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 8s period and expected on Wednesday (Sep 16) 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 folks, Rusty here. Grab a cuppa, because we’ve got a long look ahead, and to be brutally honest, it’s a pretty quiet one for Kennack Sands.
We’re starting out with a whole lot of nothing. The entire 16-day window is looking flat as a pancake. We’re talking about swell heights barely registering – mostly 0.3 ft – and a combined wave energy so weak it’s barely worth noting, with values like 5 and 8. There is simply no surf to get excited about here.
The first recommendation doesn’t really come until... well, it never does. There’s a gap of flat conditions right from the start. Let’s walk through it. Friday September 11th? Flat. Saturday? Flat. Sunday? Flat. That trend continues day after day, right through to the end of the forecast period on Saturday September 26th. The only tiny blip is a bit of windswell from the NE on Tuesday September 22nd with a 3-second period and 1.3 ft, but that’s cross-onshore and choppy – not something you’d paddle out for unless you’re desperate.
The water temp at Kennack Sands is sitting at 64.2°, which is a touch warmer than normal for this time of year, so at least the water feels nice if you’re just having a swim.
So, for a surfer, this is a tough one. There are no standouts. No hidden gems. It’s just a two-week block of no-go. For an area like this, a long blank run happens sometimes. The best advice I can give is to keep an eye on the charts – forecasts can and do change, but right now, leave the boards in the shed.
Stay tuned.
Short Range ForecastMostly dry. Very mild (max 19°C on Sun afternoon, min 15°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummarySome drizzle, heaviest during Thu morning. Very mild (max 19°C on Mon night, min 14°C on Tue night). Mainly fresh winds. | ||||||||||||||||||||
Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | |||||||||||||||
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) | S 15 | S 15 | S 14 | W 10 | W 10 | S 13 | S 12 | S 12 | S 12 | S 11 | S 11 | S 11 | WNW 8 | S 14 | S 13 | S 13 | S 13 | S 13 | S 18 | S 15 | S 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 4 | 4 | 4 | 0 | 0 | 3 | 3 | 3 | 3 | 2 | 2 | 2 | 0 | 4 | 3 | 3 | 3 | 3 | 6 | 4 | 5 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | off | off | off | off | off | cross-off | off | off | off | cross-off | cross-off | cross-off |
High Tide | 6:05AM4.85m | 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 | 12:46PM-0.08m | 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 | ||||||||
 | |  |  | | |  | | | | |  | | | |  | | | | | | |
 | 6:50 | — | — | 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 | — | — | — | — | — |
Temp °C | 17 | 17 | 18 | 18 | 19 | 19 | 19 | 19 | 19 | 17 | 16 | 16 | 16 | 15 | 16 | 16 | 15 | 15 | 16 | 17 | 16 |
Feels °C | 13 | 13 | 15 | 17 | 19 | 19 | 18 | 17 | 18 | 14 | 10 | 13 | 11 | 9 | 12 | 12 | 9 | 11 | 13 | 13 | 14 |
Swell 1 Height (m) Direction Period (s) | W 8 | S 15 | W 10 | W 10 | W 10 | W 10 | W 9 | W 9 | W 8 | W 10 | S 11 | W 10 | WNW 8 | W 11 | W 10 | S 13 | W 9 | W 10 | W 13 | W 12 | W 12 |
| kJ | 235 | 4 | 751 | 580 | 494 | 314 | 194 | 177 | 137 | 363 | 2 | 128 | 449 | 862 | 530 | 3 | 130 | 509 | 759 | 593 | 403 |
Swell 2 Height (m) Direction Period (s) | W 15 | S 15 | S 14 | SW 13 | SW 13 | S 13 | S 12 | S 12 | W 12 | S 11 | — | S 11 | W 12 | S 14 | S 13 | — | S 13 | S 13 | S 12 | S 15 | S 16 |
| kJ | 17 | 4 | 4 | 7 | 7 | 3 | 3 | 3 | 11 | 2 | — | 2 | 75 | 4 | 3 | — | 3 | 3 | 3 | 4 | 5 |
Swell 3 Height (m) Direction Period (s) | S 15 | — | — | — | — | — | — | — | S 12 | — | — | — | — | — | — | — | — | — | S 18 | S 12 | S 12 |
| kJ | 4 | — | — | — | — | — | — | — | 3 | — | — | — | — | — | — | — | — | — | 6 | 3 | 3 |
Wind waves Height (m) Direction Period (s) | SW 3 | W 9 | — | — | — | — | — | — | — | — | W 10 | W 8 | — | — | — | W 10 | W 7 | — | — | — | — |
| kJ | 4 | 373 | — | — | — | — | — | — | — | — | 541 | 365 | — | — | — | 369 | 152 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 47 | 163 | 30 | 180 | 67 | 30 | 30 | 30 | 30 | 21 | 187 | 101 | 64 | 180 | 182 | 187 | 186 | 84 | 101 | 163 | 29 |
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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