Surf Forecasts:
Kennack Sands surf forecast from 14 Sep 2026:
- Most powerful swell: Friday 18 Sep, 7AM (local time) - 0.5ft (0.1m), 18s period, S swell with 6 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 0.1m 18s and forecast to arrive on Friday (Sep 18) at 7AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.3m 10s period and expected on Wednesday (Sep 16) at 7AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 7AM (Fri 18th Sep) | 0.5ft (0.1m) 18s |
Table - best surf conditions forecast for Kennack Sands over the next 16 days.
The Lowdown
Right then, let’s have a look at what we’ve got on offer around here. Honestly, it’s a quiet stretch ahead, so don’t go getting your hopes up for any sort of swell party. The first few days are flat as a pancake and the whole 16-day window is a bit of a struggle.
We’re looking at Kennack Sands for the whole run, and it’s a real slow burner. The water’s sitting at 18°, which is a touch warmer than normal for this time of year, but that’s about the only thing that’s slightly out of the ordinary.
The first bit of real action doesn’t show up until Monday the 28th of September. There’s a jump in the combined swell energy (607) by the morning, with a 8ft easterly swell rolling in at a short period of 7 seconds. That’s size for the experts only, way too much for beginners. But here’s the kicker – the wind is a strong cross-onshore at 25 mph, making a real mess of things. The wave quality is poor, so while there’s energy, it’s going to be a battle and not much fun for a paddle. Honestly, with that wind and size on a beach setup, this looks far more interesting for the kite surfers than for us.
That messy, lumpy theme sticks around for Tuesday the 29th too. The swell stays solid around 8ft to 8ft from the east, period still short at 7-8 seconds, and the energy stays high (827). But again, the wind is fresh and cross-onshore, keeping the surface choppy. It’s powerful, but it’s not clean. Not a standout by any stretch.
So, there’s really no standout session in this whole outlook. It’s a long gap of nothing, then a couple of days of raw, wind-affected size. The only break we’ve got to work with is Kennack Sands, and it’s rarely giving us what we want. A blank run like this is more normal for this area, so don’t lose hope – forecasts can change.
Rusty.
Short Range ForecastSome drizzle, heaviest during Wed night. Very mild (max 19°C on Mon afternoon, min 14°C on Tue night). Mainly fresh winds. | Days 4-6 Weather SummarySome drizzle, heaviest during Thu morning. Warm (max 20°C on Sat night, min 14°C on Thu night). Mainly fresh winds. | ||||||||||||||||||||
Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | |||||||||||||||
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 12 | W 9 | S 12 | S 11 | S 11 | S 11 | W 10 | W 11 | S 13 | W 7 | S 13 | S 13 | S 18 | S 15 | S 16 | S 16 | S 15 | S 11 | S 11 | S 14 | S 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 3 | 0 | 3 | 2 | 2 | 2 | 0 | 0 | 3 | 0 | 3 | 3 | 6 | 4 | 5 | 5 | 4 | 2 | 2 | 4 | 3 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | off | off | off | off | off | cross-off | cross-off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 7:33PM4.82m | 7:51AM4.64m | 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 | ||||||||
Low Tide | 1:58PM0.11m | 2:17AM0.23m | 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 | ||||||||
 | |  |  | | | | |  |  | | | | | |  | |  | | | | |
 | 6:54 | — | — | 6:54 | — | — | 6:56 | — | — | 6:58 | — | — | 7:00 | — | — | 7:01 | — | — | 7:03 | — | — |
 | — | 7:37 | — | — | 7:35 | — | — | 7:32 | — | — | 7:30 | — | — | 7:28 | — | — | 7:25 | — | — | 7:23 | — |
mm | — | — | — | — | — | — | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 18 | 19 | 18 | 16 | 16 | 15 | 15 | 16 | 16 | 16 | 16 | 15 | 16 | 16 | 17 | 17 | 18 | 20 | 18 | 19 | 18 |
Feels °C | 16 | 18 | 16 | 10 | 10 | 11 | 10 | 12 | 11 | 11 | 10 | 10 | 12 | 12 | 15 | 15 | 15 | 18 | 16 | 17 | 17 |
Swell 1 Height (m) Direction Period (s) | W 9 | W 9 | W 12 | W 10 | S 11 | S 11 | W 10 | W 11 | S 13 | W 10 | S 13 | W 16 | W 13 | W 13 | S 16 | W 11 | W 10 | W 10 | W 10 | W 12 | W 13 |
| kJ | 235 | 186 | 25 | 106 | 2 | 2 | 1026 | 831 | 3 | 148 | 3 | 77 | 1266 | 932 | 5 | 465 | 479 | 443 | 379 | 556 | 546 |
Swell 2 Height (m) Direction Period (s) | S 12 | SW 12 | S 12 | S 11 | — | S 11 | — | — | — | — | — | S 13 | S 12 | S 15 | S 12 | S 16 | S 15 | SW 14 | SW 14 | S 14 | S 13 |
| kJ | 3 | 6 | 3 | 2 | — | 2 | — | — | — | — | — | 3 | 3 | 4 | 3 | 5 | 4 | 8 | 8 | 4 | 3 |
Swell 3 Height (m) Direction Period (s) | — | W 14 | S 12 | — | — | — | — | — | — | — | — | — | S 18 | S 12 | S 12 | S 12 | S 11 | S 11 | S 11 | S 11 | — |
| kJ | — | 4 | 3 | — | — | — | — | — | — | — | — | — | 6 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | — |
Wind waves Height (m) Direction Period (s) | — | — | W 8 | W 8 | W 8 | W 9 | — | — | W 10 | W 7 | W 9 | W 9 | — | — | W 12 | — | W 7 | — | — | — | — |
| kJ | — | — | 140 | 343 | 443 | 586 | — | — | 520 | 226 | 554 | 763 | — | — | 726 | — | 124 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 30 | 30 | 31 | 187 | 187 | 101 | 101 | 181 | 182 | 523 | 187 | 64 | 21 | 163 | 30 | 61 | 61 | 30 | 29 | 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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