Surf Forecasts:
The Boiler surf forecast from 10 Sep 2026:
- Best quality surf: Friday 11 Sep, 7AM (local time) - 4.5ft (1.4m), 9s period, WSW swell with cross-offshore winds.
- Most powerful swell: Thursday 10 Sep, 7PM (local time) - 7ft (2.2m), 8s period, WSW swell with 545 kJ wave energy.
- Next surfable swell (1★+): Friday 11 Sep, 7AM (local time) - 4.5ft (1.4m), 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 Friday (Sep 11) at 7AM. The primary swell is predicted to be 1.4m 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 8s and forecast to arrive on Thursday (Sep 10) at 7PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Tuesday (Sep 15) at 10PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Fri 11th Sep) | 4.5ft (1.4m) 9s |
| Best Surf | 7AM (Fri 11th Sep) | 4.5ft (1.4m) 9s |
| Most Powerful | 7PM (Thu 10th Sep) | 7ft (2.2m) 8s |
Table - best surf conditions forecast for The Boiler over the next 16 days.
The Lowdown
Alright mates, Rusty here. Let's break down what The Boiler's got cookin'.
I'm not gonna sugarcoat it – it's a lean spell for this reef. The Boiler is an inconsistent wave that needs a good SW kick, and the wind and swell just aren't playing the game for a long stretch. We're talking a solid nine days of mediocrity before we get one real chance.
From Thursday the 10th, it's a total mess. Thursday morning sees a weak 2ft SW swell with a short 5-second period and a nasty 16 mph onshore wind. That afternoon is just bigger, messier junk at 6ft with a cross-onshore blow. Friday the 11th morning is the only bright spot in the first week: a cleaner 4ft WSW groundswell with a better 9-second period and light offshore breezes. It's rippable, but the energy is only moderate. After that, the wind swings onshore and it's all lumpy, choppy slop and tiny waves until the 20th.
The one true standout, the only one worth putting in the effort for, is Sunday the 20th of September. The morning is looking like a classic. There's a solid 6ft W groundswell with the combined energy jumping to 405 – that's proper power for this spot. And the wind? Clean offshore at 16 mph from the NNW. That's the recipe for clean, hollow waves on the reef. At 6ft, this is strictly for the experienced crew, but if you know The Boiler, Sunday morning is the session.
After that, Monday the 21st morning is just average – a smaller 4ft W swell with light winds but not much energy behind it. Then it's back into weak, onshore slop right to the end of the outlook. There's a clean morning on the 25th with a 3ft W swell, but the period is a poor 6 seconds and the energy is low, so it won't have any grunt.
So here's the plan: sit tight, don't waste your time on the early fluff. Sunday the 20th of September is your window. Be there.
Rusty.
Short Range ForecastSome drizzle, heaviest during Thu afternoon. Very mild (max 18°C on Sat afternoon, min 14°C on Wed night). Winds increasing (light winds from the WSW on Wed night, strong winds from the SW by Thu afternoon). | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Mon morning. Very mild (max 19°C on Mon afternoon, min 15°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | |||||||||||||||
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) | SW 5 | WSW 6 | W 10 | WSW 9 | WSW 9 | WSW 8 | WSW 6 | WSW 7 | WSW 7 | WSW 10 | W 10 | WSW 10 | WSW 10 | WSW 6 | WSW 6 | W 7 | W 7 | W 8 | W 9 | W 9 | W 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 23 | 279 | 405 | 271 | 169 | 96 | 119 | 311 | 284 | 104 | 200 | 128 | 94 | 47 | 85 | 130 | 92 | 84 | 96 | 83 | 73 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross | cross-off | cross | cross-on | cross-on | cross-on | cross | cross-off | cross | cross-on | cross-on | cross-on | on | on | cross | cross-off | cross-off | cross-off | cross-off |
High Tide | 6:36AM9.24m | 6:54PM9.63m | 7:20AM9.57m | 7:36PM9.85m | 7:58AM9.68m | 8:13PM9.85m | 8:32AM9.62m | 8:46PM9.69m | 9:03AM9.43m | 9:17PM9.39m | 9:32AM9.11m | 9:45PM8.97m | 10:00AM8.68m | 10:13PM8.45m | |||||||
Low Tide | 12:42PM1.26m | 1:11AM0.99m | 1:23PM0.98m | 1:50AM0.87m | 1:58PM0.91m | 2:22AM0.93m | 2:30PM0.99m | 2:51AM1.13m | 2:58PM1.20m | 3:16AM1.44m | 3:26PM1.54m | 3:42AM1.85m | 3:54PM2.00m | ||||||||
 |  |  |  | |  |  | | | | | |  | | | |  | | | | | |
 | 6:41 | — | — | 6:43 | — | — | 6:45 | — | — | 6:46 | — | — | 6:48 | — | — | 6:48 | — | — | 6:50 | — | — |
 | — | 7:43 | — | — | 7:40 | — | — | 7:37 | — | — | 7:36 | — | — | 7:34 | — | — | 7:30 | — | — | 7:29 | — |
mm | — | 1 | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | 1 | — | — | 1 | — |
Temp °C | 17 | 17 | 17 | 17 | 17 | 16 | 17 | 18 | 18 | 18 | 18 | 16 | 18 | 19 | 18 | 18 | 18 | 15 | 15 | 16 | 14 |
Feels °C | 12 | 11 | 14 | 15 | 14 | 12 | 13 | 15 | 16 | 17 | 16 | 15 | 16 | 18 | 19 | 16 | 16 | 12 | 10 | 11 | 11 |
Swell 1 Height (m) Direction Period (s) | WSW 8 | W 11 | W 10 | WSW 9 | WSW 9 | WSW 8 | W 8 | — | W 10 | WSW 7 | W 10 | WSW 10 | WSW 10 | WSW 9 | WSW 6 | W 7 | W 7 | W 8 | W 9 | W 9 | W 10 |
| kJ | 19 | 2 | 405 | 271 | 169 | 96 | 33 | — | 72 | 75 | 200 | 128 | 94 | 27 | 85 | 130 | 92 | 84 | 96 | 83 | 73 |
Swell 2 Height (m) Direction Period (s) | W 12 | — | — | — | — | — | — | — | — | WSW 10 | WSW 10 | — | — | — | WSW 9 | W 11 | WSW 8 | WSW 10 | — | — | — |
| kJ | 3 | — | — | — | — | — | — | — | — | 104 | 56 | — | — | — | 16 | 2 | 24 | 20 | — | — | — |
Swell 3 Height (m) Direction Period (s) | W 12 | — | — | — | — | — | — | — | — | — | — | — | — | — | W 12 | — | — | — | — | — | — |
| kJ | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SW 5 | WSW 6 | — | — | — | — | WSW 6 | WSW 7 | WSW 7 | — | — | — | — | WSW 6 | — | — | NW 3 | NNW 4 | NNW 3 | — | — |
| kJ | 23 | 279 | — | — | — | — | 119 | 311 | 284 | — | — | — | — | 47 | — | — | 5 | 8 | 1 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 365 | 204 | 120 | 0 | 63 | 101 | 147 | 320 | 129 | 0 | 48 | 39 | 133 | 133 | 19 | 111 | 431 | 0 | 318 | 40 | 0 |
Best forecast wave conditions in Wales - Gower | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
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.
Nearest