Surf Forecasts:
Kennack Sands surf forecast from 20 Aug 2026:
- Best quality surf: Wednesday 26 Aug, 10PM (local time) - 3ft (0.9m), 7s period, SSW swell with cross-offshore winds.
- Most powerful swell: Monday 24 Aug, 4PM (local time) - 7ft (2.2m), 7s period, E swell with 467 kJ wave energy.
- Next surfable swell (1★+): Wednesday 26 Aug, 10PM (local time) - 3ft (0.9m), 7s period with SSW swell.
Best Forecast Surf Conditions for Kennack Sands this week:
The surf forecast for Kennack Sands over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 26) at 10PM. The primary swell is predicted to be 0.9m and 7s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Kennack Sands in the next 16 days are 2.2m 7s and forecast to arrive on Monday (Aug 24) 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 2.4m 9s period and expected on Thursday (Aug 20) at 4PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Wed 26th Aug) | 3ft (0.9m) 7s |
| Best Surf | 10PM (Wed 26th Aug) | 3ft (0.9m) 7s |
| Most Powerful | 4PM (Mon 24th Aug) | 7ft (2.2m) 7s |
Table - best surf conditions forecast for Kennack Sands over the next 16 days.
The Lowdown
Right then, let's have a look at what's on the menu for the next couple of weeks. I'm not gonna lie to you, it's a bit of a tough watch. Kennack Sands is a sheltered little spot, and it's just not getting the swell it needs to get going. The whole 16-day window is looking pretty flat, with only a few tiny, weak pulses that won't do anything for a surfer.
The water temperature here is sitting at 19°, which is a touch warmer than we'd normally expect for this time of year, so at least you won't be freezing while you're staring at a flat ocean.
For the first few days, right through the end of August, we're barely seeing a ripple. The swell is tiny, around 0.2m, and even though we get some nice offshore winds on Thursday the 20th and Friday the 21st, there's just no wave energy to work with. The combined swell energy is pitiful, in the low 20s, so it's a non-starter.
The middle of the window, around the 24th and 25th of August, sees a bit of a bump in size, with the swell height hitting 1.4m and even 2.0m. But the period is a shocking 5 to 7 seconds, which is just wind chop, and the wind is howling onshore at 45 km/h. The combined energy jumps up [(327) on the 24th afternoon], but it's a messy, blown-out sea. That's more of a kite-surfing scene than a paddling one.
After that, it just fades away again. The first week of September is a write-off, with more waves of 0.2m. The only positive is that the water is still a touch warmer than average.
Honestly, there's not a single standout session in the whole forecast. The spot is inconsistent at the best of times, and this is one of those long, flat spells that happens. Keep your eyes on the charts, but don't hold your breath.
Rusty.
Short Range ForecastLight rain (total 7mm), mostly falling on Fri morning. Very mild (max 18°C on Wed night, min 14°C on Thu night). Winds decreasing (fresh winds from the WNW on Thu morning, light winds from the NNE by Thu night). | Days 4-6 Weather SummaryLight rain (total 6mm), mostly falling on Tue afternoon. Very mild (max 19°C on Sun afternoon, min 16°C on Sat night). Winds increasing (light winds from the ENE on Sun afternoon, strong winds from the E by Mon night). | ||||||||||||||||||||
Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | |||||||||||||||
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 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 16 | SSW 15 | E 3 | SSW 15 | SSW 14 | ESE 5 | SSW 14 | ESE 6 | E 7 | E 7 | E 7 | E 6 | S 10 | E 5 | SSW 8 | SSW 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 21 | 20 | 18 | 17 | 17 | 24 | 21 | 2 | 42 | 38 | 41 | 39 | 208 | 467 | 290 | 110 | 37 | 30 | 1 | 257 | 89 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | cross-off | cross-off | cross-off | cross-off | cross | cross-on | cross-off | cross-on | cross-on | cross | cross-on | cross-on | cross-on | on | on | cross | cross-on | cross-on | off |
High Tide | 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 | 4:14PM3.91m | 4:34AM3.89m | 4:52PM4.21m | ||||||||
Low Tide | 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 | 10:25AM1.22m | 10:53PM1.02m | 11:06AM0.90m | 11:30PM0.70m | |||||||
 |  |  |  |  | | | |  | | | | | |  | |  |  | | | | |
 | 6:16 | — | — | 6:18 | — | — | 6:18 | — | — | 6:20 | — | — | 6:22 | — | — | 6:24 | — | — | 6:24 | — | — |
 | — | 8:30 | — | — | 8:28 | — | — | 8:25 | — | — | 8:23 | — | — | 8:22 | — | — | 8:20 | — | — | 8:17 | — |
mm | — | — | — | 4 | 1 | — | — | — | — | — | — | — | — | — | 1 | 1 | 4 | 2 | 6 | 2 | — |
Temp °C | 18 | 17 | 16 | 15 | 16 | 14 | 18 | 18 | 18 | 18 | 19 | 19 | 18 | 18 | 19 | 19 | 19 | 18 | 19 | 19 | 18 |
Feels °C | 12 | 11 | 13 | 12 | 11 | 10 | 14 | 14 | 15 | 14 | 16 | 15 | 12 | 9 | 10 | 17 | 17 | 16 | 14 | 16 | 17 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | W 9 | W 10 | W 9 | W 8 | NW 8 | W 9 | WSW 9 | WSW 9 | SSW 14 | WSW 10 | SW 9 | SW 9 | SSW 13 | SSW 13 | WNW 10 | E 6 | W 9 | W 13 | SSW 8 | W 10 |
| kJ | 21 | 763 | 470 | 215 | 137 | 50 | 52 | 26 | 26 | 38 | 19 | 22 | 13 | 17 | 17 | 20 | 37 | 60 | 3 | 257 | 416 |
Swell 2 Height (m) Direction Period (s) | — | SSW 14 | SSW 14 | SSW 13 | SSW 13 | W 9 | NNW 5 | WNW 7 | SSW 15 | W 9 | SSW 14 | SSW 14 | SSW 14 | SW 9 | SW 8 | SW 8 | SSW 9 | S 10 | E 5 | W 8 | SSW 7 |
| kJ | — | 20 | 18 | 17 | 17 | 38 | 5 | 15 | 42 | 13 | 38 | 39 | 18 | 12 | 11 | 10 | 54 | 30 | 1 | 142 | 89 |
Swell 3 Height (m) Direction Period (s) | — | — | — | S 16 | SW 16 | SSW 16 | SSW 15 | NNW 6 | NNW 5 | NW 6 | W 6 | — | W 9 | W 9 | WNW 11 | SSW 11 | W 10 | E 5 | E 5 | W 12 | SW 12 |
| kJ | — | — | — | 5 | 10 | 24 | 21 | 7 | 2 | 2 | 1 | — | 7 | 6 | 12 | 11 | 49 | 5 | 1 | 44 | 6 |
Wind waves Height (m) Direction Period (s) | W 9 | WNW 9 | — | NNE 3 | NNW 4 | — | — | E 3 | E 4 | E 4 | ESE 5 | ESE 5 | ESE 6 | E 7 | E 7 | E 7 | — | SW 8 | SW 8 | WSW 7 | — |
| kJ | 792 | 979 | — | 3 | 16 | — | — | 2 | 6 | 13 | 41 | 19 | 208 | 467 | 290 | 110 | — | 196 | 553 | 53 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 523 | 181 | 8 | 84 | 206 | 8 | 8 | 30 | 8 | 30 | 19 | 15 | 330 | 206 | 160 | 241 | 36 | 30 | 181 | 29 | 0 |
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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