Surf Forecasts:
Whitsand Bay and Tregantle surf forecast from 18 Aug 2026:
- Most powerful swell: Thursday 20 Aug, 10AM (local time) - 3.5ft (1.1m), 9s period, WSW swell with 184 kJ wave energy.
Best Forecast Surf Conditions for Whitsand Bay and Tregantle this week:
The most powerful waves expected at Whitsand Bay and Tregantle in the next 16 days are 1.1m 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 0.5m 3s period and expected on Saturday (Aug 22) at 10AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10AM (Thu 20th Aug) | 3.5ft (1.1m) 9s |
Table - best surf conditions forecast for Whitsand Bay and Tregantle over the next 16 days.
The Lowdown
Alright, let's get this straight. It’s a pretty bleak run coming up for a couple of weeks. We’ve got a stretch of mostly poor surf conditions that hang around for a long time. The first real whisper of something worthwhile doesn’t show up until Saturday, the 29th of August, so that’s a good ten days or more of waiting for scraps.
First up, Whitsand Bay and Tregantle (Whitsand-Bay-and-Tregantle). Honestly, it’s a rough start. Through this week and into the next, we’re dealing with tiny, weak swell, mostly under 3ft, and wind that’s cross-on or onshore from the west or southwest nearly every day. The water is currently a very warm 66°F – that’s 4°F warmer than normal for this time of year, which is notable.
The only real glimmer in the first week is Friday morning, the 21st of August. It’s tiny, just 1ft from the WSW with a 9-second period, but the wind is a light easterly, making it clean. That’s a mellow longboard day at best. The combined swell energy is only 42, which is weak.
Then we get a long gap. Nothing but poor conditions and onshore winds until we hit Saturday, the 29th of August. That’s the standout window. Saturday morning brings a decent 7ft swell from the WSW, with a 9-second period, and a light NNW cross-offshore wind, making it clean. The combined energy jumps right up to 1133 – strong. That’s the real deal, but with the swell over 7ft, it’s for experienced surfers only. It’ll be big, powerful, and probably a bit of a paddle.
That afternoon it drops back down to 4ft, but the wind swings to a fresh cross-shore, so it won't be as clean.
After that, Sunday the 30th and Monday the 31st look pretty blown out again with strong onshore winds. Then, on Tuesday the 1st of September, we see another pulse. The morning shows a big 8ft swell from the west, with a very long 12-second period and the combined energy is massive at 2158. But, and it’s a big but, it’s accompanied by onshore winds. That’s going to be a messy, powerful close-out for experts only.
So, for the whole run, the only two proper windows are the morning of Saturday the 29th of August and, if you’re feeling brave, the morning of Tuesday the 1st of September, but the wind is a killer on that second one. For the rest, it’s a waiting game.
Stay patient. Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Tue night. Warm (max 21°C on Tue morning, min 15°C on Wed night). Mainly fresh winds. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Fri afternoon. Warm (max 20°C on Sun afternoon, min 13°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | |||||||||||||||
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) | WSW 5 | WSW 4 | W 4 | WSW 7 | WSW 4 | WSW 4 | WSW 9 | WSW 9 | WSW 9 | WSW 9 | WSW 8 | WSW 9 | WSW 10 | WSW 10 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SW 14 | W 8 | W 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 22 | 19 | 11 | 30 | 21 | 25 | 184 | 146 | 55 | 30 | 27 | 15 | 9 | 9 | 21 | 19 | 19 | 19 | 7 | 7 | 7 |
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-off | off | cross-on | cross-off | cross-off | on | cross-off | cross-off | cross | cross-off | glassy | on | cross-on |
High Tide | 10:17AM5.10m | 10:32PM5.10m | 10:54AM4.84m | 11:11PM4.76m | 11:35AM4.56m | 11:58PM4.41m | 12:31PM4.30m | 1:05AM4.12m | 1:49PM4.13m | 2:33AM4.01m | 3:13PM4.16m | 3:53AM4.11m | 4:23PM4.37m | ||||||||
Low Tide | 4:03AM1.11m | 4:18PM1.35m | 4:42AM1.51m | 5:00PM1.75m | 5:25AM1.92m | 5:49PM2.15m | 6:18AM2.29m | 6:56PM2.46m | 7:34AM2.55m | 8:25PM2.59m | 9:01AM2.59m | 9:47PM2.47m | 10:14AM2.41m | 10:48PM2.19m | |||||||
 |  |  | | | |  | |  | |  |  | | | | | | | | | | |
 | 6:09 | — | — | 6:09 | — | — | 6:11 | — | — | 6:13 | — | — | 6:15 | — | — | 6:16 | — | — | 6:18 | — | — |
 | — | 8:30 | — | — | 8:29 | — | — | 8:27 | — | — | 8:24 | — | — | 8:22 | — | — | 8:21 | — | — | 8:19 | — |
mm | — | — | 1 | — | — | 1 | — | — | — | — | 2 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 21 | 17 | 20 | 20 | 16 | 19 | 20 | 15 | 18 | 18 | 16 | 18 | 18 | 16 | 19 | 20 | 15 | 17 | 17 | 16 |
Feels °C | 17 | 17 | 14 | 16 | 14 | 12 | 14 | 15 | 13 | 17 | 16 | 12 | 13 | 13 | 12 | 17 | 17 | 11 | 14 | 13 | 14 |
Swell 1 Height (m) Direction Period (s) | SW 17 | SW 17 | WSW 7 | W 9 | SW 16 | SSW 15 | SW 14 | SSW 14 | WSW 9 | WSW 9 | WSW 8 | WSW 9 | WSW 10 | ESE 5 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SW 14 | SW 13 | SW 13 |
| kJ | 11 | 11 | 10 | 7 | 10 | 23 | 8 | 20 | 55 | 30 | 27 | 15 | 9 | 5 | 21 | 19 | 19 | 19 | 7 | 7 | 7 |
Swell 2 Height (m) Direction Period (s) | — | — | SW 17 | SW 16 | — | — | — | — | SSW 14 | SW 13 | SW 13 | SW 13 | SW 15 | E 3 | W 9 | W 9 | W 9 | W 9 | W 8 | W 8 | W 8 |
| kJ | — | — | 11 | 10 | — | — | — | — | 19 | 7 | 7 | 7 | 9 | 1 | 6 | 2 | 6 | 1 | 1 | 6 | 5 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | S 16 | S 16 | S 16 | SW 5 | WSW 10 | — | E 4 | E 4 | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | 5 | 5 | 5 | 1 | 9 | — | 1 | 1 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WSW 5 | WSW 4 | W 4 | WSW 7 | WSW 4 | WSW 4 | WSW 9 | WSW 9 | NW 3 | — | — | — | E 3 | — | N 2 | — | — | NNW 3 | NNW 2 | SW 2 | — |
| kJ | 22 | 19 | 10 | 30 | 21 | 25 | 184 | 146 | 1 | — | — | — | 5 | — | 1 | — | — | 1 | 1 | 1 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 276 | 188 | 136 | 224 | 188 | 276 | 134 | 179 | 29 | 12 | 80 | 60 | 54 | 85 | 337 | 337 | 106 | 281 | 456 | 524 | 184 |
Best forecast wave conditions in South Cornwall | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
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Information about the Whitsand Bay and Tregantle Surf forecast
The above surf forecast table for Whitsand Bay and Tregantle provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Whitsand Bay and Tregantle can be found by selecting the local surf guide option on the grey menu. Our Whitsand Bay and Tregantle 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 (Whitsand Bay and Tregantle) 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 Whitsand Bay and Tregantle 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 South Cornwall? If you are looking for accommodation near Whitsand Bay and Tregantle, camping, hotels and holiday cottages in South Cornwall, consider staying in Plymouth which is 7 km (4 miles) away. Other places in and around South Cornwall where you can find information about places to rent, and car hire include Fowey which is 27 km (17 miles) away, Brent, Par and Bodmin.
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