
Surf Forecasts:
The Boiler surf forecast from 29 Jul 2026:
- Most powerful swell: Saturday 1 Aug, 4PM (local time) - 2.5ft (0.8m), 9s period, W swell with 103 kJ wave energy.
Best Forecast Surf Conditions for The Boiler this week:
The most powerful waves expected at The Boiler in the next 16 days are 0.8m 9s and forecast to arrive on Saturday (Aug 01) at 4PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Saturday (Aug 01) at 10PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4PM (Sat 1st Aug) | 2.5ft (0.8m) 9s |
Table - best surf conditions forecast for The Boiler over the next 16 days.
The Lowdown
Alright, grab a coffee and settle in, because I’m not gonna sugarcoat it – this 16-day window is a tough one for us. The Boiler’s looking at a long stretch of tiny, weak swell and iffy winds. We’re talking a full week of nothing worth paddling out for, honestly. The combined energy of all swells directed here barely cracks two digits most days, often sitting below 30 (12-119 range), which is about as anemic as it gets. You’ll be waiting a long time for anything to roll through.
The first real pulse, if you can call it that, arrives on Saturday, August 1st. The morning shows a light WNW cross-off breeze with clean conditions, but the swell is a pathetic 1.0 ft from the WSW. The period is long at 10 seconds, which is a groundswell, but it’s so small it’s barely a ripple. That afternoon, the wind kicks up to a cross-shore 16 mph, and the swell bumps to 3 ft. The combined energy hits 119, which is still weak, but it’s the biggest number we’ll see for a while. Not a standout, but it’s the best of a bad bunch.
Sunday, August 2nd, offers a weird moment. The afternoon goes glassy, with a light ESE breeze and clean conditions. The swell is still tiny at 1.0 ft, and the energy is only 14. It’s a flat, glassy pond, not surfable.
Then we hit a dead zone. From Monday, August 3rd, all the way through to Monday, August 10th, the swell barely moves above 1 ft, and the combined energy stays in the single digits or low teens. There’s a tiny spike on Monday afternoon, August 3rd, with a moderate offshore wind from the NNW and a 1 ft SW swell, but it’s negligible. The rest is a mix of cross-shore breezes and tiny, weak waves. Not worth the drive.
The only glimmer in the entire 16-day forecast comes right at the very end. On Tuesday, August 11th, the morning is glassy with a 2 ft swell from the west. The period is short at 5 seconds, but it’s clean. The afternoon is even better with a light cross-offshore wind and a 2 ft swell. The combined energy is 20 – still weak, but it’s the cleanest, most consistent window we’ve seen in weeks. For a spot that’s *inconsistent* at the best of times, this is the one to circle. The water temp is about average for this time of year, so no shock there.
So, my honest take: The Boiler is a reef break that needs a proper SW swell to work, and we’re not getting it. The best bet is Tuesday, August 11th for a clean, tiny session on the glassy morning or the light offshore afternoon. It’s not a day for heroes, but it’s the only day that’s not a total write-off. Everything else is a flat spell. Don’t hold your breath.
Rusty.
Short Range ForecastMostly dry. Warm (max 20°C on Wed afternoon, min 14°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummarySome drizzle, heaviest during Mon afternoon. Warm (max 20°C on Mon morning, min 13°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | |||||||||||||||
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 | W 5 | W 10 | W 6 | W 5 | W 5 | W 5 | W 5 | WSW 11 | WSW 10 | W 9 | WSW 8 | WSW 8 | WSW 8 | SW 9 | WSW 8 | SW 8 | SW 8 | SW 7 | SW 7 | WSW 7 |
Wave Graph | |||||||||||||||||||||
9 | 12 | 8 | 29 | 32 | 12 | 12 | 17 | 12 | 19 | 103 | 24 | 13 | 13 | 21 | 28 | 17 | 16 | 8 | 8 | 5 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross | cross-off | cross | off | on | cross | cross-off | cross-off | cross | off | cross-on | glassy | cross-off | cross | off | cross-on | cross-off | cross-off | cross-off |
High Tide | 7:06AM8.42m | 7:24PM8.82m | 7:42AM8.66m | 7:59PM9.04m | 8:16AM8.84m | 8:33PM9.18m | 8:49AM8.96m | 9:07PM9.24m | 9:22AM8.97m | 9:40PM9.18m | 9:54AM8.86m | 10:13PM9.00m | 10:28AM8.65m | 10:49PM8.70m | |||||||
Low Tide | 1:08PM1.99m | 1:28AM1.79m | 1:43PM1.77m | 2:03AM1.57m | 2:15PM1.60m | 2:37AM1.43m | 2:47PM1.51m | 3:09AM1.37m | 3:18PM1.51m | 3:41AM1.44m | 3:50PM1.63m | 4:14AM1.63m | 4:23PM1.85m | ||||||||
5:33 | — | — | 5:35 | — | — | 5:37 | — | — | 5:37 | — | — | 5:39 | — | — | 5:41 | — | — | 5:43 | — | — | |
— | — | 9:08 | — | — | 9:07 | — | — | 9:06 | — | — | 9:05 | — | — | 9:02 | — | — | 9:00 | — | — | 9:00 | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 3 | — | — | — |
Temp °C | 18 | 20 | 17 | 17 | 18 | 16 | 18 | 18 | 15 | 17 | 18 | 17 | 18 | 18 | 18 | 20 | 19 | 16 | 18 | 19 | 15 |
Feels °C | 17 | 18 | 16 | 14 | 13 | 13 | 15 | 12 | 11 | 12 | 13 | 13 | 15 | 17 | 14 | 19 | 15 | 15 | 16 | 15 | 12 |
Swell 1 Height (m) Direction Period (s) | WSW 5 | W 10 | W 10 | W 10 | W 10 | W 5 | W 5 | W 9 | WSW 11 | W 5 | WSW 9 | WNW 4 | WSW 8 | WSW 8 | SW 9 | WSW 8 | SW 8 | SW 8 | SW 7 | SW 7 | WSW 7 |
9 | 2 | 8 | 2 | 7 | 12 | 12 | 2 | 12 | 12 | 16 | 5 | 13 | 13 | 21 | 28 | 17 | 16 | 8 | 8 | 5 | |
Swell 2 Height (m) Direction Period (s) | W 11 | W 8 | W 6 | W 8 | W 8 | W 9 | W 9 | W 12 | W 9 | WSW 10 | — | WSW 8 | W 4 | W 4 | — | — | W 10 | WNW 3 | W 9 | W 9 | W 9 |
2 | 1 | 1 | 1 | 1 | 2 | 1 | 3 | 2 | 19 | — | 24 | 1 | 1 | — | — | 7 | 1 | 2 | 2 | 2 | |
Swell 3 Height (m) Direction Period (s) | W 8 | — | — | — | — | W 7 | W 8 | W 12 | W 11 | — | — | — | — | — | W 10 | — | — | W 10 | — | — | W 11 |
1 | — | — | — | — | 1 | 1 | 3 | 2 | — | — | — | — | — | 2 | — | — | 2 | — | — | 2 | |
Wind waves Height (m) Direction Period (s) | — | W 5 | W 4 | W 6 | W 5 | — | — | W 5 | W 4 | — | W 9 | — | — | — | — | — | — | — | — | — | NNW 3 |
— | 12 | 8 | 29 | 32 | — | — | 17 | 7 | — | 103 | — | — | — | — | — | — | — | — | — | 1 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 182 | 320 | 182 | 360 | 397 | 188 | 190 | 398 | 190 | 190 | 205 | 189 | 201 | 189 | 14 | 72 | 20 | 434 | 378 | 773 | 349 |
Best forecast wave conditions in Wales - Gower | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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Information about the The Boiler Surf forecast
The above surf forecast table for The Boiler provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at The Boiler can be found by selecting the local surf guide option on the grey menu. Our The Boiler 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 (The Boiler) 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 The Boiler 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.
The Boiler is 9 km (6 miles) from Swansea. If you plan a holiday in Wales - Gower, look for hotels and other accommodation in Swansea. Swansea has rooms for a wide range of budgets as well as car hire and transport links.










