Surf Forecasts:
The Boiler surf forecast from 7 Sep 2026:
- Best quality surf: Friday 11 Sep, 7AM (local time) - 5ft (1.5m), 9s period, WSW swell with cross-offshore winds.
- Most powerful swell: Monday 7 Sep, 10AM (local time) - 5ft (1.6m), 14s period, WSW swell with 926 kJ wave energy.
- Next surfable swell (1★+): Wednesday 9 Sep, 10PM (local time) - 2.5ft (0.7m), 8s 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 Wednesday (Sep 09) at 10PM. The primary swell is predicted to be 0.7m and 8s 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 1.6m 14s and forecast to arrive on Monday (Sep 07) at 10AM. 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+) | 10PM (Wed 9th Sep) | 2.5ft (0.7m) 8s |
| Best Surf | 7AM (Fri 11th Sep) | 5ft (1.5m) 9s |
| Most Powerful | 10AM (Mon 7th Sep) | 5ft (1.6m) 14s |
Table - best surf conditions forecast for The Boiler over the next 16 days.
The Lowdown
Alright, grab your board, let’s talk about what we’ve got. It’s a tricky outlook, that’s for sure. There’s a lot of onshore and cross-shore wind messing things up for a solid stretch.
To start, water temps are sitting about average for this time of year at The Boiler. Not too shabby.
The first proper chance to paddle out doesn’t come until the morning of Friday the 11th. After a run of poor conditions, we finally get a bit of a window. Friday morning brings a clean 5ft swell from the WSW with a light breeze. The combined energy is moderate (287), so there’s some push, but don’t expect a world-beater. The period is 9 seconds – a bit of a short-period windswell, so the shape might be a touch wonky. Still, clean surf is clean surf, and this is your best early bet.
Then, there’s a massive gap through the rest of the second week with nothing but poor reports. Hold your horses.
Now, here’s the standout – the one that might be worth marking on your calendar. On the morning of Tuesday the 22nd of September, we’ve got the strongest recommendation of the whole 16 days. We’re looking at a 5ft swell from the WSW, but the real gold is the wind: light northerly breeze, glassy and offshore. That’s the kind of wind that makes a wave stand up clean and hollow. The energy is moderate (292), and with offshore winds, this reef should really dial in. This is the one I’d be licking my lips for. Expect good surf.
Keep in mind, The Boiler is an inconsistent reef, so when it turns on like this, you don’t want to sleep on it. Also, it’s rarely a secret, so be ready for some crowd factor – it can get busy, but for that quality, it’s worth it.
The whole run before and after that Tuesday morning is pretty cooked with strong cross-onshore winds and lumpy conditions. The 17th of September actually sees some solid swell, 10ft on the Thursday morning and 8ft in the afternoon, but the wind is a mess. That’s more of a kite-surfing proposition than a paddle session.
So, to sum it up: wait for that Tuesday morning. That’s the one. Everything else is a fight against the wind.
- Rusty
Short Range ForecastModerate rain (total 19mm), heaviest on Mon night. Very mild (max 18°C on Sun night, min 13°C on Mon night). Mainly fresh winds. | Days 4-6 Weather SummaryLight rain (total 5mm), mostly falling on Thu night. Very mild (max 19°C on Fri afternoon, min 14°C on Wed night). Winds increasing (light winds from the NNW on Fri night, fresh winds from the SW by Sat afternoon). | ||||||||||||||||||||
Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | |||||||||||||||
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 14 | W 13 | WSW 6 | WSW 8 | W 9 | W 7 | W 8 | WSW 8 | WSW 8 | WSW 7 | WSW 5 | WSW 7 | WSW 9 | WSW 8 | WSW 8 | WSW 8 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 926 | 747 | 341 | 350 | 422 | 320 | 213 | 109 | 63 | 48 | 35 | 217 | 287 | 164 | 73 | 44 | 311 | 228 | 108 | 74 | 122 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross-on | cross-off | cross-off | cross-off | cross-off | cross | cross | cross-on | cross-on | cross-on | cross-off | cross | cross-off | cross-on | cross-on | cross-on | cross | cross-on | cross-on |
High Tide | 3:58PM7.71m | 4:43AM7.95m | 5:11PM8.48m | 5:45AM8.68m | 6:07PM9.17m | 6:36AM9.24m | 6:54PM9.63m | 7:20AM9.57m | 7:36PM9.85m | 7:58AM9.68m | 8:13PM9.85m | 8:32AM9.62m | 8:46PM9.69m | ||||||||
Low Tide | 9:37AM3.19m | 10:26PM2.71m | 10:56AM2.48m | 11:34PM1.96m | 11:54AM1.77m | 00:27AM1.35m | 12:42PM1.26m | 1:11AM0.99m | 1:23PM0.98m | 1:50AM0.87m | 1:58PM0.91m | 2:22AM0.93m | 2:30PM0.99m | 2:51AM1.13m | |||||||
 |  |  |  |  |  | | | | | |  | | | | |  | | | | | |
 | 6:37 | — | — | 6:37 | — | — | 6:39 | — | — | 6:41 | — | — | 6:43 | — | — | 6:45 | — | — | 6:46 | — | — |
 | — | 7:50 | — | — | 7:47 | — | — | 7:45 | — | — | 7:43 | — | — | 7:40 | — | — | 7:37 | — | — | 7:36 | — |
mm | — | — | 16 | 3 | — | — | — | — | — | — | — | 4 | — | — | — | — | 1 | 4 | — | — | 1 |
Temp °C | 17 | 17 | 16 | 16 | 16 | 15 | 15 | 15 | 15 | 17 | 17 | 18 | 18 | 19 | 17 | 17 | 17 | 18 | 18 | 18 | 18 |
Feels °C | 12 | 13 | 11 | 9 | 9 | 9 | 11 | 11 | 11 | 12 | 12 | 15 | 17 | 16 | 15 | 12 | 12 | 14 | 17 | 16 | 17 |
Swell 1 Height (m) Direction Period (s) | WSW 14 | W 13 | W 12 | WSW 8 | — | — | W 8 | WSW 8 | WSW 8 | WSW 7 | W 11 | W 7 | WSW 9 | WSW 8 | WSW 8 | WSW 8 | W 15 | W 8 | WSW 7 | WSW 7 | — |
| kJ | 926 | 747 | 279 | 350 | — | — | 213 | 109 | 63 | 48 | 2 | 176 | 287 | 164 | 73 | 44 | 5 | 187 | 108 | 74 | — |
Swell 2 Height (m) Direction Period (s) | WSW 14 | — | — | WSW 10 | — | — | — | — | W 13 | W 12 | W 11 | — | — | — | — | — | — | W 15 | — | W 13 | — |
| kJ | 308 | — | — | 110 | — | — | — | — | 3 | 3 | 2 | — | — | — | — | — | — | 5 | — | 3 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | WSW 6 | — | W 9 | W 7 | W 7 | W 7 | — | — | WSW 5 | WSW 7 | — | — | — | SW 4 | WSW 7 | WSW 7 | — | — | WSW 8 |
| kJ | — | — | 341 | — | 422 | 320 | 186 | 42 | — | — | 35 | 217 | — | — | — | 17 | 311 | 228 | — | — | 122 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 9 | 138 | 133 | 9 | 360 | 151 | 19 | 133 | 14 | 182 | 319 | 147 | 0 | 63 | 0 | 133 | 308 | 138 | 360 | 275 | 101 |
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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