Surf Forecasts:
Kennack Sands surf forecast from 9 Sep 2026:
- Most powerful swell: Tuesday 15 Sep, 10PM (local time) - 4.5ft (1.3m), 6s period, SSW swell with 136 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 1.3m 6s and forecast to arrive on Tuesday (Sep 15) at 10PM. 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 Thursday (Sep 10) at 7PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10PM (Tue 15th Sep) | 4.5ft (1.3m) 6s |
Table - best surf conditions forecast for Kennack Sands over the next 16 days.
The Lowdown
Alright, let’s cut through it. Kennack Sands is looking like a complete write-off for the next 16 days. Don’t bother rushing down there.
From the start, it’s flat. Wednesday the 9th and Thursday the 10th have zero surf, just clean-looking water with nothing to ride. Friday the 11th morning is the same – glassy but empty. By Friday afternoon, a tiny 0.3ft pulse rolls in from the south with a very long 16-second period, but the combined energy is a measly 5 (weak). It’s a tease of a groundswell, not enough to paddle for.
Saturday the 12th and Sunday the 13th stay tiny, with even less power. Winds are light offshore or cross, but it’s all flat to knee-high. This junk pattern drags through the whole first week. Water temp is about normal for this time of year at Kennack Sands, nothing special.
Come Tuesday the 15th, we get a bump to 2ft-3ft from the SSE and S, but with a nasty short period of 3-5 seconds and onshore winds. The energy climbs to 48 (weak to moderate), but the quality is poor – bumpy and messy. That’s a windswell chop, not surf. Wednesday the 16th goes right back to flat.
The second week shows a little more size but no better quality. By Sunday the 21st and Monday the 22nd, we’re looking at 3ft-4ft from the east and ESE, periods still short at 5-6 seconds. Combined energy hits 90 (weak to moderate), but it’s wrecked by strong cross-onshore winds of 18-25 mph. It’ll be lumpy, choppy, and ugly – more suited for a kite than a surfboard. The rest of the week fades back to tiny, poor conditions.
There is no standout day here. It’s a long, flat spell for Kennack Sands. The swell direction and winds just aren’t lining up. Keep the board in the car for another time.
Rusty.
Short Range ForecastMostly dry. Very mild (max 19°C on Thu night, min 15°C on Tue night). Winds increasing (light winds from the W on Wed night, fresh winds from the SSW by Thu afternoon). | Days 4-6 Weather SummaryMostly dry. Warm (max 21°C on Mon afternoon, min 16°C on Fri night). Winds decreasing (fresh winds from the W on Sat afternoon, calm by Sun night). | ||||||||||||||||||||
Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | |||||||||||||||
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) | W 9 | WNW 9 | WNW 9 | WSW 8 | WSW 7 | WSW 9 | WSW 9 | S 16 | W 8 | S 15 | S 15 | S 14 | W 10 | S 13 | S 13 | S 12 | S 12 | S 12 | SSE 3 | S 5 | SSW 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 0 | 4 | 4 | 4 | 0 | 3 | 3 | 3 | 3 | 3 | 8 | 46 | 85 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | cross | cross | cross | cross-off | off | off | cross-off | cross | cross-off | off | off | cross | cross-off | cross | cross-off | glassy | on | on | cross-on |
High Tide | 4:20PM4.57m | 4:46AM4.47m | 5:04PM4.86m | 5:27AM4.71m | 5:44PM5.04m | 6:05AM4.85m | 6:22PM5.09m | 6:41AM4.89m | 6:58PM5.01m | 7:16AM4.81m | 7:33PM4.82m | 7:51AM4.64m | 8:08PM4.53m | ||||||||
Low Tide | 10:38AM0.56m | 11:08PM0.24m | 11:25AM0.23m | 11:51PM-0.02m | 12:07PM0.01m | 00:31AM-0.16m | 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 | |||||||
 | |  |  | | | | | | | | |  | | | | |  | | | | |
 | 6:46 | — | — | 6:48 | — | — | 6:48 | — | — | 6:50 | — | — | 6:52 | — | — | 6:54 | — | — | 6:54 | — | — |
 | — | 7:47 | — | — | 7:45 | — | — | 7:44 | — | — | 7:42 | — | — | 7:38 | — | — | 7:37 | — | — | 7:35 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 16 | 16 | 17 | 17 | 19 | 19 | 19 | 17 | 18 | 19 | 17 | 17 | 17 | 19 | 20 | 21 | 20 | 19 | 20 | 21 |
Feels °C | 12 | 12 | 13 | 13 | 11 | 16 | 16 | 16 | 16 | 14 | 15 | 14 | 16 | 16 | 20 | 21 | 21 | 21 | 20 | 20 | 19 |
Swell 1 Height (m) Direction Period (s) | W 9 | WNW 9 | WNW 9 | WNW 8 | W 11 | WSW 9 | WSW 9 | WSW 9 | W 8 | W 14 | S 15 | W 10 | W 10 | W 10 | W 9 | W 9 | W 9 | W 8 | W 11 | W 10 | SSW 6 |
| kJ | 445 | 222 | 101 | 22 | 9 | 807 | 442 | 311 | 157 | 37 | 4 | 696 | 426 | 312 | 164 | 162 | 119 | 82 | 235 | 218 | 85 |
Swell 2 Height (m) Direction Period (s) | WSW 8 | WSW 8 | WSW 8 | W 12 | W 14 | — | — | S 16 | — | S 15 | S 15 | S 14 | SW 13 | S 13 | S 13 | S 12 | S 12 | W 13 | S 11 | S 11 | W 10 |
| kJ | 111 | 84 | 54 | 11 | 4 | — | — | 5 | — | 4 | 4 | 4 | 7 | 3 | 3 | 3 | 3 | 13 | 2 | 2 | 234 |
Swell 3 Height (m) Direction Period (s) | — | W 15 | N 6 | N 5 | — | — | — | — | — | — | — | — | — | — | S 13 | SW 12 | SW 12 | S 12 | S 11 | — | S 11 |
| kJ | — | 4 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | 3 | 6 | 6 | 3 | 2 | — | 2 |
Wind waves Height (m) Direction Period (s) | — | — | — | WSW 8 | WSW 7 | — | — | — | — | WSW 8 | W 8 | — | — | — | — | — | — | — | SSE 3 | S 5 | W 4 |
| kJ | — | — | — | 88 | 316 | — | — | — | — | 273 | 507 | — | — | — | — | — | — | — | 8 | 46 | 9 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 16 | 16 | 29 | 249 | 182 | 16 | 15 | 16 | 29 | 195 | 218 | 180 | 21 | 29 | 29 | 29 | 16 | 8 | 29 | 8 | 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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