Surf Forecasts:
Kennack Sands surf forecast from 15 Sep 2026:
- Most powerful swell: Tuesday 22 Sep, 4PM (local time) - 0.5ft (0.2m), 12s period, ESE swell with 14 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 0.2m 12s and forecast to arrive on Tuesday (Sep 22) at 4PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.5m 12s period and expected on Friday (Sep 18) at 4AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4PM (Tue 22nd Sep) | 0.5ft (0.2m) 12s |
Table - best surf conditions forecast for Kennack Sands over the next 16 days.
The Lowdown
Alright, let’s get into it. It’s looking bleak, I won’t lie to you. We’re staring down a long, empty run of surf, and it’s not looking like it’s going to break any time soon.
It’s flat to tiny for days. We start off with some anemic southern energy – 0.3ft at best, with a period around 11 seconds and a combined energy of just 4. That’s basically nothing. The wind is offshore, which is a tease because it’s blowing over a completely flat ocean. You’d be better off finding a lake.
This sorry state of affairs continues through the end of the month. The swell stays pegged at that 0.3ft mark, with energies stuck in the single digits or low teens. There’s a slight bump in period on Friday the 18th (18 seconds) and Saturday the 19th (16 seconds), but with that kind of size, a long period just means even longer waits between nothing sets. Even the glassy conditions on Sunday the 20th won’t save us.
We’re completely flat again from Monday the 21st through Wednesday the 23rd. Then on Thursday the 24th, we get a pulse but it’s from the wrong direction. It’s 2ft of east-southeast windswell with a period of just 4 seconds and a combined energy of 10. It’ll be lumpy, cross-onshore and pretty awful.
The only thing that even looks like a wave is a bump of southwest swell that shows up on Sunday the 27th. We’re looking at 4ft but with a period of only 5 seconds and a combined energy of 101. That’s classic short-period windswell, and it’s going to be blown out by a fresh onshore wind. It’ll be a mess. Not one for beginners, and even for the crew that knows what they’re doing, it’s going to be a fight against the chop. It’s just poor quality surf, plain and simple.
After that, it fades right back out. A few days of anemic 0.3ft crumble, and then nothing.
So, to be straight with you, there’s no standout swell here. The only half-interesting window is that Sunday afternoon on the 27th, and even that’s a letdown. It’s a period where the beach breaks are doing absolutely nothing. With the wind and swell directions on offer, this coast is probably going to be more interesting for the kite surfers than for us.
Hold tight, it’s got to change eventually, but it doesn’t look like it will within this window.
Rusty.
Short Range ForecastSome drizzle, heaviest during Thu morning. Very mild (max 17°C on Tue morning, min 14°C on Wed morning). Mainly fresh winds. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Fri afternoon. Very mild (max 18°C on Sun afternoon, min 15°C on Fri morning). Winds decreasing (fresh winds from the WSW on Fri afternoon, calm by Sun morning). | ||||||||||||||||||||
Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | |||||||||||||||
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 11 | S 11 | S 11 | W 10 | W 11 | S 13 | W 8 | S 13 | S 13 | S 18 | S 17 | S 16 | S 16 | S 11 | S 11 | S 11 | S 14 | W 10 | W 12 | W 11 | S 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 2 | 2 | 2 | 0 | 0 | 3 | 0 | 3 | 3 | 6 | 6 | 5 | 5 | 2 | 2 | 2 | 4 | 0 | 0 | 0 | 3 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | off | off | cross-off | off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | off | glassy | cross-off | off | glassy | cross | cross-off |
High Tide | 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 | 12:25PM3.20m | 1:22AM3.11m | 2:01PM3.31m | 2:38AM3.30m | ||||||||
Low Tide | 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 | 5:52AM1.76m | 6:45PM1.78m | 7:24AM1.80m | 8:24PM1.67m | ||||||||
 | |  |  | |  |  | | | |  |  | | | | | | | | | | |
 | 6:54 | — | — | 6:56 | — | — | 6:58 | — | — | 7:00 | — | — | 7:01 | — | — | 7:03 | — | — | 7:03 | — | — |
 | — | 7:35 | — | — | 7:32 | — | — | 7:30 | — | — | 7:28 | — | — | 7:25 | — | — | 7:23 | — | — | 7:22 | — |
mm | — | — | — | — | — | — | 1 | — | — | — | 2 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 17 | 17 | 16 | 15 | 16 | 16 | 16 | 16 | 15 | 16 | 17 | 17 | 17 | 17 | 17 | 17 | 18 | 17 | 18 | 18 | 18 |
Feels °C | 12 | 11 | 12 | 11 | 12 | 11 | 11 | 9 | 9 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 17 | 17 | 19 | 19 | 16 |
Swell 1 Height (m) Direction Period (s) | S 11 | S 11 | W 9 | W 10 | W 11 | S 13 | W 9 | S 13 | S 13 | W 13 | S 17 | W 12 | W 11 | SW 15 | W 10 | W 10 | W 10 | W 10 | W 12 | W 11 | W 10 |
| kJ | 2 | 2 | 676 | 1035 | 907 | 3 | 173 | 3 | 3 | 1497 | 6 | 228 | 238 | 9 | 648 | 504 | 394 | 296 | 396 | 295 | 206 |
Swell 2 Height (m) Direction Period (s) | S 11 | — | S 11 | — | — | — | — | — | — | S 12 | S 12 | S 16 | S 16 | S 11 | SW 14 | SW 14 | S 14 | SW 13 | SW 13 | SW 13 | S 13 |
| kJ | 2 | — | 2 | — | — | — | — | — | — | 3 | 3 | 5 | 5 | 2 | 8 | 8 | 4 | 7 | 7 | 7 | 3 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | S 18 | — | S 12 | S 12 | — | S 11 | S 11 | S 11 | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | 6 | — | 3 | 3 | — | 2 | 2 | 2 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | W 8 | W 8 | — | — | — | W 10 | W 8 | W 9 | W 10 | — | W 12 | W 8 | W 8 | W 10 | — | — | — | — | — | — | ESE 2 |
| kJ | 432 | 432 | — | — | — | 580 | 582 | 749 | 1147 | — | 1225 | 443 | 355 | 780 | — | — | — | — | — | — | 1 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 187 | 255 | 97 | 21 | 182 | 485 | 523 | 187 | 186 | 195 | 182 | 195 | 195 | 181 | 187 | 8 | 30 | 8 | 8 | 21 | 8 |
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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