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Surf Forecasts:
Sennen Cove surf forecast from 19 Aug 2026:
- Best quality surf: Friday 21 Aug, 1AM (local time) - 5.5ft (1.7m), 10s period, W swell with cross-offshore winds.
- Most powerful swell: Thursday 20 Aug, 10AM (local time) - 8ft (2.5m), 9s period, WNW swell with 1,156 kJ wave energy.
- Next surfable swell (1★+): Friday 21 Aug, 1AM (local time) - 5.5ft (1.7m), 10s period with W swell.
Best Forecast Surf Conditions for Sennen Cove this week:
The surf forecast for Sennen Cove over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Aug 21) at 1AM. The primary swell is predicted to be 1.7m and 10s period with a secondary swell of 0.4m and 5s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Sennen Cove in the next 16 days are 2.5m 9s and forecast to arrive on Thursday (Aug 20) at 10AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 6s period and expected on Saturday (Aug 22) at 10PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Fri 21st Aug) | 5.5ft (1.7m) 10s |
| Best Surf | 1AM (Fri 21st Aug) | 5.5ft (1.7m) 10s |
| Most Powerful | 10AM (Thu 20th Aug) | 8ft (2.5m) 9s |
Table - best surf conditions forecast for Sennen Cove over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s take a hard look at what’s on offer for Sennen Cove over the next couple of weeks. I’ll be straight with you – it’s a rough patch ahead.
Right off the bat, we’ve got a problem. The wind has been howling from the west and northwest for days, and it’s just not letting up. The swell is there, but it’s a mess. The water temp is sitting at about average for the time of year, so no surprises there.
The first real chance to even think about a paddle is on the morning of Friday, 21 August. The swell has dropped to 4 ft from the WNW, but the wind has swung around to a light NNE cross-off, which cleans things up. The energy is pretty weak (288), and the period is a short 8 seconds, so expect small, weak waves. It’s a ‘marginal’ call. Later that day, the wind turns onshore again and it’s back to rubbish.
We then hit a dead zone. Saturday the 22nd offers nothing but windswell with a 5-second period. Sunday and Monday are tiny, flat, and clean, but with swell heights of 0.7 ft to 1.0 ft, you’re not going anywhere. The northwest wind on Tuesday the 25th brings a little bump back up to 3 ft, but it’s cross-onshore and choppy.
The outlook takes a grim turn on Thursday, 27 August. The morning shows a solid 10 ft swell from the WNW, but it’s onshore, messy, and rated ‘marginal’ at best. The energy is pumping (2080), but that’s all for the kitesurfers. For a paddle surfer, it’s a big, blown-out mess.
The second week looks even more chaotic. The 30th of August sees a 10 ft to 12 ft swell with a strong cross-shore wind, and by the 31st, we’re looking at 15 ft waves with over 5000 units of energy. That is dangerous, expert-only territory, but the wind is howling, so the quality is non-existent. Same story rolls into the first days of September with 13 ft and 8 ft swells, all blown out or onshore.
If you’re looking for a standout, there isn’t one. The only ‘clean’ window was the morning of Friday the 21st, and even then, it was marginal. Everything else is a battle against the wind. For Sennen Cove, it’s a period to sit out and watch the forecast. It won’t stay this poor forever, but right now, the ocean is angry.
Rusty.
Short Range ForecastHeavy rain (total 20mm), heaviest during Tue night. Very mild (max 18°C on Tue night, min 13°C on Fri morning). Winds decreasing (strong winds from the WNW on Wed night, light winds from the NNE by Thu night). | Days 4-6 Weather SummaryMostly dry. Very mild (max 18°C on Mon morning, min 15°C on Fri night). Mainly fresh winds. | ||||||||||||||||||||
Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | |||||||||||||||
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) | WNW 9 | WNW 10 | W 8 | WNW 9 | WNW 10 | W 10 | WNW 8 | WNW 8 | WNW 7 | WNW 7 | N 6 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | W 9 | W 8 | WNW 10 | W 10 | WSW 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 383 | 551 | 887 | 1156 | 1000 | 539 | 246 | 115 | 48 | 71 | 124 | 42 | 39 | 40 | 20 | 19 | 18 | 12 | 116 | 273 | 689 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | on | cross-on | cross-on | cross-off | cross-off | cross | cross | cross-off | cross | cross-off | cross-off | cross-off | cross-off | off | cross | cross | cross-on | cross-on | cross |
High Tide | 9:44AM4.42m | 10:06PM4.24m | 10:30AM4.04m | 10:59PM3.84m | 11:34AM3.72m | 00:17AM3.56m | 1:05PM3.59m | 1:52AM3.54m | 2:30PM3.72m | 3:04AM3.75m | 3:29PM4.01m | 3:54AM4.05m | 4:13PM4.36m | ||||||||
Low Tide | 4:11PM1.21m | 4:34AM1.41m | 4:59PM1.57m | 5:25AM1.74m | 6:02PM1.84m | 6:37AM1.94m | 7:29PM1.95m | 8:09AM1.93m | 8:57PM1.80m | 9:24AM1.70m | 9:59PM1.50m | 10:16AM1.37m | 10:43PM1.15m | ||||||||
 |  |  |  | | |  |  |  | | | | | | | | | | | |  | |
 | 6:16 | — | — | 6:18 | — | — | 6:20 | — | — | 6:20 | — | — | 6:22 | — | — | 6:24 | — | — | 6:26 | — | — |
 | — | 8:34 | — | — | 8:31 | — | — | 8:30 | — | — | 8:28 | — | — | 8:25 | — | — | 8:23 | — | — | 8:22 | — |
mm | — | — | 2 | — | — | 6 | 4 | 1 | — | — | — | — | — | — | — | — | — | 2 | — | — | 7 |
Temp °C | 18 | 18 | 18 | 17 | 17 | 17 | 15 | 15 | 15 | 16 | 16 | 17 | 17 | 17 | 17 | 18 | 18 | 18 | 17 | 18 | 18 |
Feels °C | 14 | 12 | 12 | 11 | 12 | 14 | 11 | 9 | 9 | 11 | 11 | 13 | 13 | 13 | 13 | 14 | 15 | 15 | 15 | 15 | 14 |
Swell 1 Height (m) Direction Period (s) | SSW 16 | SSW 16 | SSW 15 | SSW 14 | WNW 10 | W 10 | WNW 8 | WNW 8 | WNW 7 | WNW 7 | WNW 7 | WNW 6 | W 9 | WNW 6 | W 8 | W 9 | W 9 | ESE 5 | WNW 10 | W 10 | SSE 7 |
| kJ | 24 | 24 | 22 | 21 | 1000 | 539 | 246 | 115 | 48 | 62 | 25 | 12 | 14 | 7 | 12 | 14 | 14 | 9 | 116 | 273 | 135 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | SSW 14 | N 5 | SSW 13 | SSW 13 | N 5 | W 9 | W 9 | W 9 | SSW 14 | W 8 | SSW 14 | ESE 5 | ESE 5 | W 8 | E 5 | E 5 | SSW 12 |
| kJ | — | — | — | — | 41 | 7 | 17 | 17 | 18 | 36 | 23 | 24 | 39 | 12 | 20 | 4 | 5 | 12 | 5 | 5 | 13 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | SSW 14 | SSW 16 | SSW 16 | W 9 | SSW 15 | SSW 15 | SSW 15 | WNW 6 | SSW 14 | E 5 | SSW 14 | SSW 13 | WNW 11 | W 8 | SSW 13 | E 5 |
| kJ | — | — | — | — | — | 19 | 25 | 25 | 39 | 21 | 21 | 42 | 8 | 40 | 5 | 19 | 18 | 12 | 12 | 17 | 1 |
Wind waves Height (m) Direction Period (s) | WNW 9 | WNW 10 | W 8 | WNW 9 | — | — | NNE 5 | N 6 | — | N 5 | N 6 | N 5 | NNE 4 | N 4 | N 4 | NNE 4 | — | — | S 4 | SSW 6 | WSW 9 |
| kJ | 383 | 551 | 887 | 1156 | — | — | 37 | 74 | — | 71 | 124 | 47 | 15 | 13 | 10 | 5 | — | — | 12 | 207 | 689 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 571 | 213 | 184 | 179 | 192 | 0 | 23 | 20 | 219 | 113 | 196 | 16 | 18 | 23 | 70 | 268 | 391 | 206 | 5 | 21 | 84 |
Best forecast wave conditions in North Cornwall | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
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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.
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