Surf Forecasts:
Kennack Sands surf forecast from 18 Aug 2026:
- Most powerful swell: Saturday 22 Aug, 1PM (local time) - 3.5ft (1.0m), 5s period, E swell with 54 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 1.0m 5s and forecast to arrive on Saturday (Aug 22) at 1PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.5m 9s period and expected on Tuesday (Aug 25) at 7AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 1PM (Sat 22nd Aug) | 3.5ft (1.0m) 5s |
Table - best surf conditions forecast for Kennack Sands over the next 16 days.
The Lowdown
Alright, I’m Rusty, and I’ve been staring at the charts for Kennack Sands. Gotta be straight with you – it’s a tough stretch ahead. The whole 16-day window is pretty much a write-off for any proper surf. There’s a big gap from now until the 22nd of August where the waves are barely a ripple, and even then, it doesn’t really get going.
The first hint of anything rideable shows up on the morning of Saturday the 22nd of August. We’re looking at a tiny 2.6ft swell from the east, with a period of only 4 seconds. That’s super weak, short-period windswell, and the combined energy is a measly 44. It’s not gonna be any good. The wind is a gentle cross-shore, so it’s not blown out, but there’s just no power. The afternoon sees a similar 3.0ft from the east, period still a paltry 6 seconds, and energy at 50. It’s clean, but pathetic.
The rest of the run is nothing but “poor surf conditions.” You get a few pulses – like the 28th of August Friday afternoon where a 3.6ft swell from the SSW shows up with a period of 9 seconds and energy of 209, which is moderate energy. That’s the biggest number in the whole forecast, but it’s still a messy, chopped-up picture. The wind is cross-off, so it’s clean, but the wave quality is just not there. Then on the 2nd of September, Wednesday afternoon, we see a 4.9ft swell from the SSW, but it’s only 6 seconds period, so it’s fat and weak. The energy is 140, which is moderate, but again, it’s just not a surfing swell.
Honestly, for any session that might be worth paddling out for, you’d have to be a beginner just wanting to sit in the water. The water temp is 66.6°F, which is much warmer than usual for this time of year, so at least you won’t freeze waiting for a set that never comes. Kennack is a sheltered, inconsistent spot, and this forecast shows exactly why. It’s a blank run, and for this area, that’s pretty normal.
Forget it this time, mate. Keep the board in the shed.
Short Range ForecastLight rain (total 4mm), mostly falling on Tue night. Very mild (max 19°C on Tue morning, min 13°C on Thu night). Winds decreasing (fresh winds from the WNW on Wed afternoon, light winds from the NNW by Thu night). | Days 4-6 Weather SummaryLight rain (total 3mm), mostly falling on Sat morning. Very mild (max 19°C on Fri afternoon, min 15°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | |||||||||||||||
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) | SSW 17 | W 7 | SSW 17 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 16 | E 4 | E 6 | E 6 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SW 5 | WSW 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 27 | 0 | 29 | 24 | 24 | 22 | 21 | 20 | 18 | 17 | 17 | 24 | 23 | 50 | 28 | 19 | 20 | 20 | 19 | 47 | 0 |
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 | off | cross-off | cross-off | cross | cross-off | cross-off | cross | cross-off | cross-off | cross-off | glassy | cross-off | cross-on | on | on |
High Tide | 9:25PM4.22m | 9:47AM3.98m | 10:10PM3.84m | 10:36AM3.66m | 11:06PM3.49m | 11:42AM3.40m | 00:25AM3.26m | 1:09PM3.29m | 1:52AM3.23m | 2:28PM3.38m | 3:01AM3.38m | 3:28PM3.62m | 3:53AM3.62m | ||||||||
Low Tide | 3:44PM0.66m | 4:05AM0.83m | 4:23PM1.01m | 4:44AM1.18m | 5:07PM1.34m | 5:31AM1.50m | 6:05PM1.62m | 6:38AM1.72m | 7:29PM1.75m | 8:12AM1.74m | 9:05PM1.64m | 9:33AM1.53m | 10:08PM1.35m | ||||||||
 | |  |  | |  | | |  | | | |  | |  | | | | |  | | |
 | 6:13 | — | — | 6:15 | — | — | 6:16 | — | — | 6:18 | — | — | 6:18 | — | — | 6:20 | — | — | 6:22 | — | — |
 | — | 8:34 | — | — | 8:31 | — | — | 8:30 | — | — | 8:28 | — | — | 8:25 | — | — | 8:23 | — | — | 8:22 | — |
mm | — | — | 3 | — | — | 1 | — | — | — | — | — | — | 2 | 1 | — | — | — | — | — | — | — |
Temp °C | 19 | 18 | 18 | 19 | 18 | 17 | 18 | 18 | 16 | 17 | 19 | 15 | 17 | 17 | 16 | 18 | 18 | 16 | 18 | 18 | 18 |
Feels °C | 17 | 14 | 16 | 14 | 12 | 12 | 12 | 13 | 14 | 15 | 16 | 11 | 14 | 16 | 12 | 17 | 17 | 13 | 15 | 15 | 16 |
Swell 1 Height (m) Direction Period (s) | SSW 17 | SW 17 | SSW 17 | W 9 | SSW 16 | WSW 10 | SSW 14 | W 9 | W 9 | W 9 | W 8 | WSW 9 | W 9 | E 6 | E 6 | ENE 5 | W 9 | W 8 | WSW 9 | WSW 9 | W 9 |
| kJ | 27 | 11 | 29 | 287 | 24 | 30 | 21 | 700 | 388 | 177 | 111 | 26 | 41 | 50 | 28 | 5 | 13 | 12 | 15 | 15 | 786 |
Swell 2 Height (m) Direction Period (s) | — | — | — | SSW 16 | — | SSW 15 | — | SSW 14 | SSW 14 | SSW 13 | SSW 13 | WNW 8 | NNW 5 | WNW 6 | W 9 | W 9 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | — |
| kJ | — | — | — | 24 | — | 22 | — | 20 | 18 | 17 | 17 | 19 | 2 | 17 | 14 | 14 | 20 | 20 | 19 | 18 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | S 16 | E 4 | SSW 16 | SSW 15 | W 9 | SSW 15 | SSW 14 | E 6 | WNW 5 | WNW 5 | NW 8 | — |
| kJ | — | — | — | — | — | — | — | — | — | 5 | 1 | 24 | 21 | 24 | 21 | 19 | 3 | 3 | 3 | 3 | — |
Wind waves Height (m) Direction Period (s) | W 6 | W 7 | W 7 | — | WNW 10 | W 8 | W 9 | — | — | NNE 6 | NNW 4 | NNW 5 | E 4 | — | NNW 5 | NW 4 | NW 6 | N 3 | SW 2 | SW 5 | WSW 9 |
| kJ | 161 | 148 | 146 | — | 370 | 453 | 783 | — | — | 12 | 23 | 19 | 23 | — | 13 | 4 | 23 | 2 | 1 | 47 | 1385 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 250 | 415 | 184 | 184 | 187 | 182 | 180 | 188 | 8 | 8 | 21 | 98 | 15 | 19 | 106 | 183 | 19 | 39 | 39 | 30 | 29 |
Best forecast wave conditions in South Cornwall | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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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