Surf Forecasts:
Rest Bay surf forecast from 30 Aug 2026:
- Most powerful swell: Friday 4 Sep, 1PM (local time) - 8ft (2.4m), 8s period, W swell with 839 kJ wave energy.
Best Forecast Surf Conditions for Rest Bay this week:
The most powerful waves expected at Rest Bay in the next 16 days are 2.4m 8s and forecast to arrive on Friday (Sep 04) at 1PM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 1PM (Fri 4th Sep) | 8ft (2.4m) 8s |
Table - best surf conditions forecast for Rest Bay over the next 16 days.
The Lowdown
Alright, folks, Rusty here. Let’s be straight with you – the next couple of weeks are looking pretty grim for a proper surf. We’ve got a long stretch of poor conditions ahead, but there are a couple of small windows where you might get wet if you’re desperate.
The pattern for the next two weeks is dominated by onshore and cross-onshore winds, and the swell just doesn’t have any power behind it. For the first week, from the 30th through to the 4th, it’s a washout. We're looking at windswell with short periods, lumpy and choppy conditions, and no real quality. The water is going to be a weird one too – it’s sitting at 69°F at Rest Bay (Porthcawl) on Sunday, which is over 7°F warmer than normal for this time of year. That’s very unusual, like a bath out there, but you won’t be able to enjoy it with the wind ruining everything.
We do see a bit of a bump in size on Friday the 4th, with swell hitting 8ft and energy getting up there (792), but it’s coming with a strong 25 mph cross-onshore wind. That’s just messy, stormy surf, not worth the paddle out unless you’re a glutton for punishment. Even then, it’s a poor outlook.
There’s a brief, slight lull in the wind on the morning of Saturday the 5th, but the swell drops to 4ft with a short 7-second period. It’s still cross-shore, and honestly, it’s only a marginal call. The energy is weak (272), and you’d be scratching for anything. The few days after that are dead – tiny, weak, and mostly onshore or cross-onshore. We’re looking at a stretch from the 6th to the 12th where the swell is below 3ft. It’s flat, or close to it. This is a proper blank run.
For a bit of a silver lining, the morning of Sunday the 13th looks like the only real highlight in the whole two weeks. The wind swings offshore from the ENE at 12 mph, and the ocean cleans up nicely. The swell is small, only 2ft with a 10-second period from the WSW (55 energy), but at least it’s a clean, offshore surf. It’s a long-period swell, and at a beach-and-point break like Rest Bay, that long period can make it break a bit straight, but with those small waves, it’s not a big deal. It’s really just a chance to get the board wet in clean water. It won’t be exciting, but it’s the best on offer. The Monday morning after that is clean and offshore too, but the swell fades to almost nothing at 0.7ft, so you’re just floating around.
So, the long and short of it: there’s almost no real surf to get excited about. You’ve got a gap of several days with nothing, and the one hopeful morning is tiny. Keep your expectations low, but the forecasts can change. It tends not to stay this bad for long.
Rusty
Short Range ForecastModerate rain (total 18mm), heaviest on Sun afternoon. Very mild (max 19°C on Sun morning, min 15°C on Sun night). Winds decreasing (strong winds from the SW on Sun night, light winds from the WSW by Mon night). | Days 4-6 Weather SummaryModerate rain (total 11mm), heaviest on Thu night. Very mild (max 19°C on Wed afternoon, min 13°C on Fri night). Mainly strong winds. | ||||||||||||||||||||
Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | |||||||||||||||
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 9 | WSW 6 | WSW 8 | W 9 | WSW 9 | WSW 10 | W 9 | WSW 9 | WSW 5 | WSW 6 | WSW 7 | WSW 8 | WSW 8 | WSW 8 | WSW 7 | WSW 8 | W 8 | W 8 | W 7 | WSW 6 | W 6 |
Wave Graph | |||||||||||||||||||||
186 | 141 | 379 | 505 | 418 | 193 | 106 | 101 | 30 | 191 | 334 | 277 | 191 | 202 | 308 | 792 | 754 | 294 | 131 | 53 | 20 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | on | cross-on | cross-on | on | on | on | on | cross-on | on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross | on | glassy |
High Tide | 8:45PM9.12m | 9:03AM8.89m | 9:20PM9.04m | 9:38AM8.75m | 9:57PM8.76m | 10:17AM8.41m | 10:38PM8.28m | 11:00AM7.92m | 11:25PM7.66m | 11:52AM7.32m | 00:25AM7.00m | 1:01PM6.77m | 1:47AM6.53m | ||||||||
Low Tide | 2:29PM0.35m | 2:48AM0.29m | 3:00PM0.35m | 3:19AM0.40m | 3:33PM0.53m | 3:54AM0.69m | 4:10PM0.88m | 4:33AM1.15m | 4:54PM1.40m | 5:20AM1.75m | 5:49PM2.00m | 6:24AM2.36m | 7:09PM2.53m | ||||||||
6:22 | — | — | 6:24 | — | — | 6:26 | — | — | 6:28 | — | — | 6:28 | — | — | 6:31 | — | — | 6:31 | — | — | |
— | 8:06 | — | — | 8:04 | — | — | 8:01 | — | — | 8:00 | — | — | 7:58 | — | — | 7:54 | — | — | 7:52 | — | |
mm | 2 | 6 | 9 | — | — | — | 1 | — | — | — | — | 1 | — | — | 10 | — | — | — | — | — | — |
Temp °C | 19 | 17 | 16 | 15 | 16 | 16 | 17 | 17 | 17 | 18 | 19 | 18 | 18 | 18 | 17 | 17 | 17 | 16 | 15 | 15 | 14 |
Feels °C | 15 | 13 | 9 | 10 | 10 | 13 | 13 | 13 | 14 | 13 | 15 | 14 | 15 | 14 | 12 | 10 | 10 | 10 | 13 | 12 | 13 |
Swell 1 Height (m) Direction Period (s) | W 9 | — | — | — | — | WSW 10 | W 9 | — | WSW 8 | — | — | — | W 8 | W 16 | W 13 | — | — | WSW 11 | W 7 | WSW 10 | W 6 |
158 | — | — | — | — | 193 | 99 | — | 12 | — | — | — | 177 | 5 | 14 | — | — | 43 | 114 | 10 | 20 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | W 15 | — | — | — | — | — | WSW 11 | W 14 | WSW 9 |
— | — | — | — | — | — | — | — | — | — | — | — | 4 | — | — | — | — | — | 23 | 4 | 9 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 14 | — | W 13 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | — | 3 | |
Wind waves Height (m) Direction Period (s) | WSW 9 | WSW 6 | WSW 8 | W 9 | WSW 9 | — | WSW 9 | WSW 9 | WSW 5 | WSW 6 | WSW 7 | WSW 8 | WSW 8 | WSW 8 | WSW 7 | WSW 8 | W 8 | W 8 | W 7 | WSW 6 | — |
186 | 141 | 379 | 505 | 418 | — | 106 | 101 | 30 | 191 | 334 | 277 | 191 | 202 | 308 | 792 | 754 | 294 | 131 | 53 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 254 | 340 | 71 | 107 | 71 | 70 | 138 | 188 | 138 | 311 | 410 | 299 | 138 | 138 | 298 | 355 | 356 | 142 | 3 | 195 | 34 |
Best forecast wave conditions in Wales - South East | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
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Information about the Rest Bay Surf forecast
The above surf forecast table for Rest Bay provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Rest Bay can be found by selecting the local surf guide option on the grey menu. Our Rest Bay 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 (Rest Bay) 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 Rest Bay 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.
Rest Bay is 1 km (1 miles) from Porthcawl. If you plan a holiday in Wales - South East, look for hotels and other accommodation in Porthcawl. Porthcawl has rooms for a wide range of budgets as well as car hire and transport links.











