
Surf Forecasts:
Sennen Cove surf forecast from 12 Sep 2026:
- Most powerful swell: Friday 18 Sep, 7AM (local time) - 7ft (2.1m), 13s period, WNW swell with 1,401 kJ wave energy.
Best Forecast Surf Conditions for Sennen Cove this week:
The most powerful waves expected at Sennen Cove in the next 16 days are 2.1m 13s and forecast to arrive on Friday (Sep 18) at 7AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 5s period and expected on Wednesday (Sep 16) at 4AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 7AM (Fri 18th Sep) | 7ft (2.1m) 13s |
Table - best surf conditions forecast for Sennen Cove over the next 16 days.
The Lowdown
Alright, let’s get down to it. The next couple of weeks at Sennen Cove are mostly going to be a fight, not a glide.
For the first week and a half, it’s a lot of chop. We’re looking at cross-onshore winds and messy surf. Saturday the 12th has waves around 5ft from the west, with a period of 8 seconds, but that wind is going to tear it up. It’s the same story day after day, with the energy picking up mid-week – check out Wednesday the 16th, with a 7.5ft west-northwest swell and a hefty energy reading of 1097. But it’s lumpy, and it’s not going to be the fun, clean surf you want. Water temp is running a touch warmer than normal for the season, sitting at 63.3°.
We get a brief reprieve on Friday the 18th. The wind backs off a little, and we get a long-period groundswell – 6.6ft from the west-northwest with a 13-second period. There’s some real energy behind it (1308). That long period might make it a bit close-outy for the beach, but it’s the best-looking surf we've had so far. Still, it's rated as marginal, so the tide will be key.
Then the wind gods get angry again. You’ll want to stay on the beach Monday the 21st. We’re talking about an 11.5ft west-northwest behemoth with a huge energy number of 3724. With a fresh onshore wind, that’s just a mess. It’s more of a kitesurfing day than a surfing day. It’s way too big and blown out for a paddle.
But hold on. We’ve got a gem hidden in there. Wednesday the 23rd is your day. The wind finally swings offshore to the east-southeast. We’ve got a 5.9ft swell from the west, and even though the period is a short 7 seconds, the light, clean offshore breeze at 9 mph is going to make it glassy. This is the standout. The energy is moderate (394), but the quality will be high. It’ll be a fun, clean wave.
The next morning, Thursday the 24th, is still rideable with a 5.2ft west-northwest swell and a cross-offshore wind, but the breeze is picking up a bit. Wednesday is the one to circle on the calendar.
The final weekend goes a bit wild again. We’ve got a big, long-period west-northwest swell hitting on Sunday the 27th – up to 9.8ft with a 15-second period. That’s big, powerful groundswell, but the wind is on it, making it rough and challenging. That one’s for the experts, and even then, you’ll be scratching for a clean one. It’s a promise for the future, but too unpredictable to get stoked on now.
Bottom line: clear your schedule for Wednesday the 23rd. It’s the only truly clean window in the whole run. The rest is a lot of waiting.
Later, folks.
Short Range ForecastMostly dry. Very mild (max 19°C on Sun night, min 17°C on Sat morning). Mainly fresh winds. | Days 4-6 Weather SummarySome drizzle, heaviest during Wed night. Very mild (max 16°C on Tue morning, min 15°C on Tue night). Mainly strong winds. | ||||||||||||||||||||
Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | |||||||||||||||
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 8 | W 9 | W 10 | W 10 | W 10 | W 10 | W 9 | W 9 | W 8 | WNW 8 | WNW 8 | WNW 9 | WNW 10 | WNW 11 | W 10 | WNW 7 | WNW 9 | WNW 10 | WNW 13 | WNW 13 | WNW 12 |
Wave Graph | |||||||||||||||||||||
320 | 492 | 850 | 663 | 492 | 305 | 224 | 177 | 165 | 470 | 509 | 809 | 1018 | 831 | 596 | 397 | 662 | 838 | 1299 | 1075 | 308 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-on | on | cross-on | cross-on |
High Tide | 6:21PM5.74m | 6:40AM5.52m | 6:58PM5.63m | 7:15AM5.41m | 7:33PM5.39m | 7:50AM5.18m | 8:08PM5.04m | 8:24AM4.86m | 8:43PM4.64m | 9:00AM4.48m | 9:21PM4.20m | 9:42AM4.08m | 10:08PM3.79m | ||||||||
Low Tide | 12:34PM0.02m | 00:56AM-0.03m | 1:09PM0.07m | 1:29AM0.13m | 1:43PM0.25m | 2:02AM0.39m | 2:17PM0.51m | 2:34AM0.72m | 2:51PM0.85m | 3:08AM1.09m | 3:29PM1.22m | 3:47AM1.46m | 4:16PM1.59m | ||||||||
6:52 | — | — | 6:54 | — | — | 6:56 | — | — | 6:56 | — | — | 6:58 | — | — | 7:00 | — | — | 7:01 | — | — | |
— | 7:44 | — | — | 7:42 | — | — | 7:38 | — | — | 7:37 | — | — | 7:35 | — | — | 7:32 | — | — | 7:30 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | 2 |
Temp °C | 17 | 18 | 18 | 18 | 18 | 19 | 19 | 19 | 19 | 16 | 16 | 16 | 15 | 15 | 16 | 16 | 16 | 16 | 17 | 17 | 17 |
Feels °C | 12 | 14 | 15 | 16 | 17 | 18 | 18 | 17 | 16 | 12 | 10 | 11 | 10 | 9 | 11 | 9 | 9 | 9 | 13 | 12 | 10 |
Swell 1 Height (m) Direction Period (s) | WNW 14 | WNW 13 | W 10 | W 10 | W 10 | W 10 | W 9 | W 9 | WNW 12 | S 11 | S 11 | S 11 | WNW 10 | WNW 11 | N 5 | S 13 | S 13 | S 13 | WNW 13 | WNW 13 | WNW 12 |
40 | 63 | 850 | 663 | 492 | 305 | 224 | 177 | 46 | 2 | 2 | 2 | 1018 | 831 | 14 | 3 | 3 | 3 | 1299 | 1075 | 308 | |
Swell 2 Height (m) Direction Period (s) | S 15 | S 15 | S 14 | SW 13 | SW 13 | S 13 | WNW 10 | SW 12 | S 12 | — | — | — | S 11 | S 13 | S 13 | — | — | S 18 | S 12 | S 12 | SW 16 |
4 | 4 | 4 | 7 | 7 | 3 | 10 | 6 | 3 | — | — | — | 2 | 4 | 4 | — | — | 6 | 3 | 3 | 10 | |
Swell 3 Height (m) Direction Period (s) | S 15 | — | — | SW 13 | SW 13 | S 12 | SW 12 | W 14 | S 12 | — | — | — | — | — | — | — | — | — | S 18 | S 15 | — |
4 | — | — | 7 | 7 | 3 | 6 | 4 | 3 | — | — | — | — | — | — | — | — | — | 6 | 4 | — | |
Wind waves Height (m) Direction Period (s) | W 8 | W 9 | — | — | — | — | — | — | W 8 | WNW 8 | WNW 8 | WNW 9 | N 6 | N 6 | W 10 | WNW 7 | WNW 9 | WNW 10 | — | — | WSW 6 |
320 | 492 | — | — | — | — | — | — | 165 | 470 | 509 | 809 | 77 | 53 | 596 | 397 | 662 | 838 | — | — | 290 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 206 | 184 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 179 | 206 | 137 | 20 | 137 | 506 | 600 | 206 | 206 | 215 | 213 | 608 |
Best forecast wave conditions in North Cornwall | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
Information about the Sennen Cove Surf forecast
The above surf forecast table for Sennen Cove provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Sennen Cove can be found by selecting the local surf guide option on the grey menu. Our Sennen Cove 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 (Sennen Cove) 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 Sennen Cove 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.
Are you planning a holiday in North Cornwall? If you are looking for accommodation near Sennen Cove, camping, hotels and holiday cottages in North Cornwall, consider staying in Penzance which is 12 km (7 miles) away. Other places in and around North Cornwall where you can find information about places to rent, and car hire include Camborne which is 31 km (19 miles) away, The Lizard, Penryn and Falmouth.










