Surf Forecasts:
Kennack Sands surf forecast from 23 Aug 2026:
- Most powerful swell: Monday 24 Aug, 4PM (local time) - 8ft (2.4m), 7s period, E swell with 628 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 2.4m 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 2.5m 8s period and expected on Friday (Aug 28) at 7PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4PM (Mon 24th Aug) | 8ft (2.4m) 7s |
Table - best surf conditions forecast for Kennack Sands over the next 16 days.
The Lowdown
Alright, let’s talk about Kennack Sands.
Right from the start, it’s a bit of a tough stretch. I’ve been watching it, and the truth is, the entire 16-day period is a write-off if you’re a paddler. There isn’t a single day with a surf recommendation that would get me out of bed. The forecast shows zero decent surf options from now through to September 7th.
We kick off on Sunday, August 23rd. There’s some small swell showing around 3 ft from the ESE, but with a short period of just 5 seconds and a cross-onshore breeze, it’s messy and weak. The combined swell energy is only 25, so practically no power. The water is 65°°, which is a touch warmer than normal for this time of year, but that’s the only good news.
Monday the 24th sees a spike in height – 7 ft to 8 ft – but it’s from the east with howling 28 mph cross-onshore winds. The wave energy climbs to 392 and 645, but that’s just raw power with no shape. It’s a jumbled, onshore mess. That’s too big and too blown out for anyone but maybe a kite surfer if they’re feeling brave.
Tuesday and Wednesday are more of the same: poor quality, cross-onshore or onshore wind, short period swells. A small window on Thursday the 27th shows 7 ft from the SSW at 8 seconds, but the wind is cross-on and it’s still no good. After that, the swell drops to almost nothing.
From Friday the 28th onward, it’s flat or near flat. A few days in early September show tiny 0.7 ft pulses from the SSW with long periods (14-18 seconds), but the energy numbers are in the low 20s. It’s not enough to ride. The winds do turn offshore or glassy on a few occasions, but with no swell to work with, it’s just a pretty, clean lake.
So, plain and simple: Kennack Sands has nothing on offer in this 16-day window. It’s a blank run. For this area, that’s not unusual when the pattern sets in. Forecasts can change, but right now, don’t bother packing your board.
- Rusty
Short Range ForecastMostly dry. Very mild (max 19°C on Tue morning, min 16°C on Sun night). Winds decreasing (strong winds from the E on Mon morning, light winds from the S by Tue night). | Days 5-7 Weather SummaryModerate rain (total 15mm), heaviest on Wed night. Very mild (max 19°C on Wed afternoon, min 16°C on Thu night). Winds decreasing (fresh winds from the SE on Wed night, light winds from the NNW by Thu night). | |||||||||||||||||||
Sun 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | ||||||||||||||
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) | ESE 5 | ESE 6 | ESE 7 | E 7 | E 8 | E 7 | E 6 | E 6 | SSW 4 | S 4 | S 6 | SSW 8 | E 4 | SSW 7 | SW 7 | WSW 7 | W 8 | W 8 | S 11 | S 11 |
Wave Graph  | ||||||||||||||||||||
 kJ | 25 | 65 | 374 | 628 | 446 | 246 | 153 | 21 | 18 | 25 | 140 | 513 | 1 | 73 | 0 | 0 | 0 | 0 | 2 | 2 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross-on | cross-on | cross-on | cross-on | on | cross | on | on | cross-on | cross-on | cross-on | cross-on | cross-off | cross-off | off | cross-off | cross-off | cross-on |
High Tide | 3:01AM3.38m | 3:28PM3.62m | 3:53AM3.62m | 4:14PM3.91m | 4:34AM3.89m | 4:52PM4.21m | 5:10AM4.15m | 5:25PM4.49m | 5:42AM4.38m | 5:57PM4.71m | 6:13AM4.57m | 6:28PM4.87m | ||||||||
Low Tide | 9:05PM1.64m | 9:33AM1.53m | 10:08PM1.35m | 10:25AM1.22m | 10:53PM1.02m | 11:06AM0.90m | 11:30PM0.70m | 11:42AM0.61m | 00:05AM0.42m | 12:16PM0.37m | 00:39AM0.21m | 12:51PM0.20m | 1:13AM0.08m | |||||||
 |  | |  | | | |  | |  |  | |  |  | | | | | |  | |
 | — | — | 6:22 | — | — | 6:24 | — | — | 6:24 | — | — | 6:26 | — | — | 6:28 | — | — | 6:30 | — | — |
 | 8:23 | — | — | 8:22 | — | — | 8:20 | — | — | 8:17 | — | — | 8:15 | — | — | 8:14 | — | — | 8:12 | — |
mm | — | — | — | — | — | — | — | — | — | 1 | 12 | — | 2 | — | — | — | — | — | — | 7 |
Temp °C | 18 | 18 | 17 | 18 | 18 | 19 | 19 | 18 | 18 | 19 | 18 | 18 | 18 | 17 | 18 | 18 | 17 | 18 | 18 | 18 |
Feels °C | 14 | 13 | 9 | 12 | 12 | 14 | 17 | 17 | 17 | 17 | 14 | 14 | 16 | 16 | 16 | 14 | 16 | 14 | 15 | 17 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 10 | SSW 14 | SSW 13 | WNW 11 | W 10 | W 10 | W 9 | W 8 | W 8 | SSW 6 | WNW 7 | SW 9 | WSW 8 | W 9 | SW 12 | — | — | S 11 | WNW 7 |
| kJ | 47 | 24 | 18 | 17 | 25 | 74 | 70 | 81 | 49 | 32 | 74 | 18 | 586 | 122 | 57 | 5 | — | — | 2 | 102 |
Swell 2 Height (m) Direction Period (s) | WSW 10 | SSW 14 | SW 9 | W 9 | SSW 13 | SW 9 | SSW 8 | E 6 | SW 7 | SSW 7 | E 4 | WNW 10 | W 11 | SSW 7 | SW 12 | — | — | — | — | SW 6 |
| kJ | 19 | 39 | 13 | 6 | 17 | 19 | 47 | 21 | 14 | 10 | 10 | 21 | 58 | 73 | 5 | — | — | — | — | 53 |
Swell 3 Height (m) Direction Period (s) | SW 12 | — | W 9 | SW 9 | W 8 | SW 13 | SW 13 | SSW 8 | E 5 | SW 12 | W 8 | E 4 | E 4 | W 10 | — | — | — | — | — | S 11 |
| kJ | 6 | — | 6 | 3 | 6 | 7 | 7 | 44 | 5 | 6 | 28 | 1 | 1 | 70 | — | — | — | — | — | 2 |
Wind waves Height (m) Direction Period (s) | ESE 5 | ESE 6 | ESE 7 | E 7 | E 8 | E 7 | E 6 | SSW 3 | SSW 4 | S 4 | S 6 | SSW 8 | — | — | SW 7 | WSW 7 | W 8 | W 8 | W 7 | — |
| kJ | 25 | 65 | 374 | 628 | 446 | 246 | 153 | 3 | 18 | 25 | 140 | 513 | — | — | 147 | 419 | 844 | 804 | 419 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 38 | 15 | 408 | 181 | 165 | 60 | 160 | 30 | 30 | 106 | 163 | 67 | 29 | 8 | 16 | 64 | 35 | 195 | 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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