Surf Forecasts:
The Boiler surf forecast from 6 Sep 2026:
- Best quality surf: Friday 11 Sep, 10AM (local time) - 4.5ft (1.3m), 9s period, WSW swell with cross-offshore winds.
- Most powerful swell: Tuesday 8 Sep, 1AM (local time) - 6ft (1.9m), 12s period, WSW swell with 966 kJ wave energy.
- Next surfable swell (1★+): Friday 11 Sep, 10AM (local time) - 4.5ft (1.3m), 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 10AM. The primary swell is predicted to be 1.3m 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 1.9m 12s and forecast to arrive on Tuesday (Sep 08) at 1AM. 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+) | 10AM (Fri 11th Sep) | 4.5ft (1.3m) 9s |
| Best Surf | 10AM (Fri 11th Sep) | 4.5ft (1.3m) 9s |
| Most Powerful | 1AM (Tue 8th Sep) | 6ft (1.9m) 12s |
Table - best surf conditions forecast for The Boiler over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s take a look at what the next couple of weeks are shaping up like for the breaks around here. I gotta be straight with you—this is a tough stretch. We’re looking at a long, frustrating gap where the ocean just isn’t giving us much to work with. Don't get your hopes up for at least the first week and a half.
We start off on Sunday, September 6th, but it's a write-off. Tiny, weak swell with strong onshore winds. The Boiler is seeing a meager 2ft of west swell at a short 6 seconds, and the energy is pathetic (43). It’s just a choppy, messy scene. The water is sitting at 67°, which is 6° warmer than normal for this time of year—that’s pretty unusual.
Monday the 7th is the only real blip on the radar, and even then, it’s a hard sell. The morning shows some promise with a 5ft WSW groundswell and a very long 14-second period. The energy rating jumps up to 1234, so there’s some serious power in the water. Winds are offshore from the WNW, which should keep things clean. The problem is, it's The Boiler—an inconsistent reef break that rarely fires. It could be super fun for an intermediate, but that long-period swell is going to barrel through, so be ready for longer waits between sets. The afternoon on Monday gets a bit messier with the wind swinging onshore, so try to get out early.
After that, it’s grim. From Tuesday the 8th all the way through to Monday the 21st, it’s mostly poor surf conditions with onshore or strong cross-shore winds and small, weak swell. There are a few clean mornings with offshore wind, but the swell is too small and the energy is too low to get excited about. Even the bigger pulse on Monday the 21st afternoon—7ft from the WSW—comes with cross-shore winds and a messy cross-chop, which is no good for the paddle surfer. If this was a beach break, I’d say the setup looks more interesting for kite surfing, but The Boiler is a reef, so just leave it be.
Honestly, the pick of the entire forecast is the *Monday morning, September 7th* at The Boiler. That’s your one chance. It’s a bit of a gamble with an inconsistent break and a long-period swell that might race by, but if you’re an experienced surfer, that clean 5ft WSW groundswell at 14 seconds is your best shot. Don't hold your breath for anything else.
Rusty.
Short Range ForecastModerate rain (total 13mm), heaviest on Mon night. Warm (max 23°C on Sun afternoon, min 13°C on Mon night). Winds increasing (light winds from the SSE on Sun afternoon, fresh winds from the SW by Mon night). | Days 4-6 Weather SummaryLight rain (total 9mm), mostly falling on Wed night. Very mild (max 19°C on Fri morning, min 14°C on Wed morning). Winds decreasing (fresh winds from the SW on Thu morning, light winds from the W by Fri night). | ||||||||||||||||||||
Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | |||||||||||||||
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) | W 6 | WSW 6 | WSW 6 | WSW 14 | WSW 13 | WSW 12 | WSW 8 | W 9 | W 7 | W 8 | WSW 8 | WSW 8 | WSW 6 | WSW 7 | WSW 9 | WSW 9 | WSW 9 | WSW 8 | WSW 6 | WSW 7 | WSW 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 19 | 45 | 56 | 926 | 931 | 966 | 308 | 452 | 312 | 229 | 67 | 89 | 93 | 299 | 388 | 249 | 137 | 75 | 145 | 244 | 245 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross-on | cross-off | cross | cross-on | cross-off | cross | cross-off | cross-off | cross | cross-on | cross-on | cross-on | cross-on | cross-off | cross | cross-on | on | cross-on | cross-on |
High Tide | 2:22PM7.24m | 3:19AM7.32m | 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 | ||||||||
Low Tide | 8:54PM3.32m | 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 | ||||||||
 |  |  |  | |  | | | | | |  |  | |  | | | |  | | | |
 | 6:35 | — | — | 6:37 | — | — | 6:37 | — | — | 6:39 | — | — | 6:41 | — | — | 6:43 | — | — | 6:45 | — | — |
 | — | 7:52 | — | — | 7:50 | — | — | 7:47 | — | — | 7:45 | — | — | 7:43 | — | — | 7:40 | — | — | 7:37 | — |
mm | — | — | — | — | — | 13 | — | — | — | — | — | 2 | 1 | 2 | 3 | 1 | — | — | 1 | 2 | 2 |
Temp °C | 21 | 23 | 18 | 17 | 17 | 17 | 16 | 16 | 15 | 15 | 15 | 16 | 17 | 18 | 17 | 19 | 19 | 16 | 18 | 18 | 18 |
Feels °C | 19 | 22 | 17 | 12 | 13 | 12 | 9 | 8 | 8 | 11 | 11 | 12 | 11 | 14 | 14 | 16 | 15 | 16 | 14 | 15 | 17 |
Swell 1 Height (m) Direction Period (s) | W 6 | WSW 6 | WSW 17 | WSW 14 | W 13 | — | WSW 9 | — | — | W 8 | WSW 8 | W 13 | W 12 | W 11 | W 9 | WSW 9 | WSW 9 | WSW 8 | — | — | WSW 8 |
| kJ | 19 | 45 | 28 | 926 | 848 | — | 100 | — | — | 229 | 67 | 3 | 3 | 2 | 318 | 249 | 137 | 75 | — | — | 245 |
Swell 2 Height (m) Direction Period (s) | WSW 9 | SW 13 | — | WSW 14 | — | — | — | — | — | — | — | W 13 | W 12 | W 11 | — | — | — | — | — | — | — |
| kJ | 16 | 6 | — | 308 | — | — | — | — | — | — | — | 3 | 3 | 2 | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | SW 13 | — | — | — | — | — | — | — | — | — | — | W 13 | — | — | — | — | — | — | — | — | — |
| kJ | 7 | — | — | — | — | — | — | — | — | — | — | 3 | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SE 2 | SSE 2 | WSW 6 | — | WSW 13 | WSW 12 | WSW 8 | W 9 | W 7 | — | W 6 | WSW 8 | WSW 6 | WSW 7 | WSW 9 | — | — | — | WSW 6 | WSW 7 | — |
| kJ | 1 | 1 | 56 | — | 931 | 966 | 308 | 452 | 312 | — | 49 | 89 | 93 | 299 | 388 | — | — | — | 145 | 244 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 48 | 182 | 133 | 9 | 138 | 308 | 151 | 360 | 360 | 9 | 133 | 119 | 416 | 320 | 133 | 0 | 119 | 20 | 133 | 133 | 133 |
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.
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