Surf Forecasts:
The Boiler surf forecast from 30 Aug 2026:
- Best quality surf: Tuesday 1 Sep, 7AM (local time) - 3.5ft (1.0m), 9s period, WSW swell with cross-offshore winds.
- Most powerful swell: Monday 31 Aug, 7AM (local time) - 7ft (2.2m), 9s period, WSW swell with 775 kJ wave energy.
- Next surfable swell (1★+): Tuesday 1 Sep, 7AM (local time) - 3.5ft (1.0m), 9s period with WSW swell.
Best Forecast Surf Conditions for The Boiler this week:
The surf forecast for The Boiler over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Sep 01) at 7AM. The primary swell is predicted to be 1.0m and 9s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at The Boiler in the next 16 days are 2.2m 9s and forecast to arrive on Monday (Aug 31) at 7AM. Winds are predicted to be cross-offshore at the time the swell arrives.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Tue 1st Sep) | 3.5ft (1.0m) 9s |
| Best Surf | 7AM (Tue 1st Sep) | 3.5ft (1.0m) 9s |
| Most Powerful | 7AM (Mon 31st Aug) | 7ft (2.2m) 9s |
Table - best surf conditions forecast for The Boiler over the next 16 days.
The Lowdown
Right, let’s have a look at what’s on offer. The Boiler’s a pretty exposed reef setup, and it’s going to take its time to get going. We’re looking at a lot of low-quality, blown-out days before anything worth getting excited about shows up. There are long gaps with nothing to recommend.
We’re starting from the 30th of August, and honestly, it’s grim. Sunday the 30th has rain showers, a solid cross-onshore wind, and a messy, short-period swell around 4.3ft from the WSW. The combined wave energy is moderate at best (453), but the wind just tears it apart. Not worth paddling out. Into Monday the 31st, the wind swings offshore, NW at 19 mph, and the swell picks up to 6.6ft from the WSW with a 9-second period. The combined energy jumps to strong (1121), and it cleans up nicely. This is the first standout, and it’s a proper window: Monday morning looks clean with decent size, but remember it’s an inconsistent reef spot, so patience is key. That offshore wind will be a gem, with clean faces and some push. The water temp is reading 68.7°, which is a massive 7.6° warmer than average for this time of year – that’s very unusual, and it’ll feel like a warm bath.
After that Monday morning, the quality drops fast. Tuesday through to Thursday is mostly cross or cross-onshore winds with lumpy, short-period junk. A couple of days gap with nothing worth a paddle. Friday the 4th of September morning offers another clean window with a lighter NW offshore breeze and a 6.9ft WSW swell (7 seconds, combined energy 456), but it’s borderline and only rated marginal. Still, if you’re keen, it could be fun. Then from the 5th through to the 10th, it goes flat or poor again – another long stretch of rubbish. The 11th of September morning is the real long-range standout: a clean, light offshore wind from the WNW, a solid 4.9ft WSW swell with an 8-second period, and combined energy of 298. It’s not huge but the conditions will be clean. Remember though, this is a week and a half out, so it’s promising but not locked in. The Boiler is inconsistent at the best of times, so this run of poor options is fairly normal for the area.
Short Range ForecastHeavy rain (total 20mm), heaviest during Sun night. Very mild (max 17°C on Sun afternoon, min 15°C on Sun night). Winds increasing (light winds from the W on Mon night, fresh winds from the SW by Wed morning). | Days 5-7 Weather SummaryLight rain (total 3mm), mostly falling on Wed afternoon. Very mild (max 19°C on Thu night, min 12°C on Fri night). Winds decreasing (strong winds from the SW on Thu night, light winds from the NW by Fri night). | |||||||||||||||||||
Sun 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | ||||||||||||||
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 6 | WSW 8 | WSW 9 | WSW 10 | WSW 10 | W 9 | WSW 8 | WSW 5 | SW 6 | WSW 7 | WSW 7 | WSW 8 | WSW 8 | WSW 6 | WSW 8 | WSW 8 | W 7 | W 7 | WSW 6 | WSW 10 |
Wave Graph  | ||||||||||||||||||||
 kJ | 209 | 634 | 655 | 614 | 276 | 39 | 103 | 26 | 176 | 344 | 353 | 273 | 259 | 186 | 526 | 355 | 205 | 104 | 53 | 72 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross-off | cross-off | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross-on | cross | cross | cross-off | cross-off | cross-off | off |
High Tide | 8:42PM9.58m | 8:57AM9.36m | 9:15PM9.49m | 9:28AM9.22m | 9:48PM9.24m | 10:01AM8.93m | 10:23PM8.83m | 10:38AM8.51m | 11:04PM8.29m | 11:24AM7.96m | 00:02AM7.65m | 12:36PM7.40m | 1:34AM7.19m | |||||||
Low Tide | 2:43AM1.09m | 2:54PM1.23m | 3:14AM1.21m | 3:24PM1.39m | 3:45AM1.48m | 3:57PM1.70m | 4:20AM1.90m | 4:35PM2.16m | 5:02AM2.45m | 5:26PM2.76m | 6:02AM3.09m | 6:51PM3.32m | ||||||||
 |  |  | |  |  | |  |  |  | |  | |  | | |  | | | | |
 | — | — | 6:24 | — | — | 6:26 | — | — | 6:28 | — | — | 6:30 | — | — | 6:31 | — | — | 6:33 | — | — |
 | 8:07 | — | — | 8:06 | — | — | 8:02 | — | — | 8:00 | — | — | 7:59 | — | — | 7:57 | — | — | 7:53 | — |
mm | 7 | 10 | — | — | — | — | — | 1 | 2 | 1 | 1 | — | — | 1 | — | — | — | — | — | — |
Temp °C | 17 | 16 | 16 | 16 | 16 | 17 | 17 | 17 | 17 | 18 | 18 | 18 | 18 | 19 | 17 | 17 | 17 | 15 | 16 | 14 |
Feels °C | 12 | 10 | 12 | 11 | 13 | 13 | 13 | 15 | 12 | 14 | 15 | 14 | 15 | 13 | 12 | 10 | 13 | 11 | 12 | 12 |
Swell 1 Height (m) Direction Period (s) | — | — | WSW 9 | — | WSW 10 | W 9 | W 18 | SW 16 | W 16 | SW 16 | W 15 | SW 15 | SW 15 | SW 15 | — | — | SW 14 | W 7 | WSW 10 | WSW 10 |
| kJ | — | — | 655 | — | 276 | 39 | 6 | 10 | 5 | 10 | 4 | 8 | 9 | 9 | — | — | 8 | 104 | 32 | 72 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | W 16 | — | — | — | — | — | — | — | — | W 14 | WSW 10 | W 8 | SW 13 |
| kJ | — | — | — | — | — | — | — | 5 | — | — | — | — | — | — | — | — | 4 | 35 | 1 | 7 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 14 | SW 13 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 8 | 7 | — |
Wind waves Height (m) Direction Period (s) | WSW 6 | WSW 8 | WSW 9 | WSW 10 | — | WSW 6 | WSW 8 | WSW 5 | SW 6 | WSW 7 | WSW 7 | WSW 8 | WSW 8 | WSW 6 | WSW 8 | WSW 8 | W 7 | W 7 | WSW 6 | — |
| kJ | 209 | 634 | 466 | 614 | — | 36 | 103 | 26 | 176 | 344 | 353 | 273 | 259 | 186 | 526 | 355 | 205 | 104 | 53 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 431 | 49 | 360 | 49 | 0 | 111 | 182 | 101 | 416 | 308 | 182 | 413 | 133 | 278 | 360 | 320 | 318 | 138 | 48 | 0 |
Best forecast wave conditions in Wales - Gower | ||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our The Boiler surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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.
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