Surf Forecasts:
The Boiler surf forecast from 9 Sep 2026:
- Best quality surf: Friday 11 Sep, 4AM (local time) - 5ft (1.6m), 9s period, WSW swell with cross-offshore winds.
- Most powerful swell: Thursday 10 Sep, 10PM (local time) - 7ft (2.1m), 8s period, WSW swell with 547 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 2.1m 8s and forecast to arrive on Thursday (Sep 10) at 10PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 6s period and expected on Wednesday (Sep 09) at 4PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Wed 9th Sep) | 2.5ft (0.7m) 8s |
| Best Surf | 4AM (Fri 11th Sep) | 5ft (1.6m) 9s |
| Most Powerful | 10PM (Thu 10th Sep) | 7ft (2.1m) 8s |
Table - best surf conditions forecast for The Boiler over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let me level with you – this outlook for The Boiler is a tough one. Over the next couple of weeks, there's really no proper surf on the cards. The break itself is an inconsistent reef setup, and the conditions just aren't lining up. You'll see a few fleeting moments where it's barely surfable, but nothing you'd want to paddle out for.
Starting off, Wednesday September 9th and Thursday the 10th are a write-off – poor surf, choppy, onshore winds. Forget it. Then on Friday morning September 11th, we get a brief window: a clean 4ft swell from the west-southwest, period around 9 seconds, with a light cross-off northwesterly breeze at about 9 mph. The combined energy is moderate (254), but the waves are ordinary and the break is inconsistent. Not a standout by any stretch.
Saturday the 12th and Sunday the 13th – Saturday is ugly, but Sunday morning September 13th offers another clean session: 3ft from the same direction, light cross-off wind again (6 mph), energy at 169. Still just “surfable” at best. After that, a long gap of nearly a week with nothing worth mentioning – just small, messy, or onshore junk.
Then, on Sunday afternoon September 20th, we get a glassy moment. The swell drops to 2ft from the west, period 9 seconds, with zero wind – glassy! Energy is weak at 68, but if you're desperate you could have a splash. That's it. The rest of the forecast into the 24th is more of the same – tiny, cross-shore chop, or blown out.
Honestly, this stretch is one to skip. The Boiler is inconsistent at the best of times, and the next two weeks don't deliver. Keep an eye on the charts – it won't stay this quiet forever.
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Thu afternoon. Very mild (max 17°C on Thu morning, min 13°C on Tue night). Winds increasing (light winds from the WSW on Wed night, fresh winds from the SW by Thu afternoon). | Days 4-6 Weather SummarySome drizzle, heaviest during Sat morning. Warm (max 20°C on Mon afternoon, min 13°C on Sat night). Winds decreasing (fresh winds from the SW on Sat morning, calm by Sun night). | ||||||||||||||||||||
Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | |||||||||||||||
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 8 | WSW 8 | WSW 8 | WSW 8 | WSW 6 | WSW 9 | WSW 9 | WSW 9 | WSW 8 | WSW 6 | WSW 7 | WSW 7 | WSW 9 | WSW 9 | WSW 9 | WSW 9 | WSW 5 | WSW 6 | WSW 6 | W 8 | SW 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 161 | 109 | 49 | 20 | 176 | 528 | 254 | 169 | 96 | 238 | 400 | 199 | 169 | 116 | 82 | 58 | 32 | 34 | 30 | 42 | 78 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross-on | on | cross-on | cross | cross-off | cross | cross-on | cross-on | cross-on | cross-off | cross-off | cross | glassy | on | cross-on | cross | cross | cross-on | cross |
High Tide | 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 | 9:03AM9.43m | 9:17PM9.39m | 9:32AM9.11m | 9:45PM8.97m | |||||||
Low Tide | 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 | 2:58PM1.20m | 3:16AM1.44m | 3:26PM1.54m | 3:42AM1.85m | |||||||
 |  |  |  |  |  | | | | | | | | |  | | | | | | | |
 | 6:39 | — | — | 6:41 | — | — | 6:43 | — | — | 6:45 | — | — | 6:46 | — | — | 6:48 | — | — | 6:48 | — | — |
 | — | 7:45 | — | — | 7:43 | — | — | 7:40 | — | — | 7:37 | — | — | 7:36 | — | — | 7:34 | — | — | 7:30 | — |
mm | — | — | — | — | 2 | 1 | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 15 | 14 | 17 | 17 | 17 | 17 | 17 | 16 | 17 | 18 | 17 | 16 | 16 | 15 | 19 | 20 | 18 | 19 | 20 | 19 |
Feels °C | 11 | 12 | 10 | 12 | 12 | 14 | 14 | 14 | 12 | 11 | 14 | 15 | 14 | 13 | 14 | 19 | 19 | 19 | 19 | 20 | 20 |
Swell 1 Height (m) Direction Period (s) | W 8 | WSW 8 | WSW 8 | WSW 8 | W 11 | WSW 9 | WSW 9 | WSW 9 | WSW 8 | W 15 | — | WSW 7 | WSW 9 | WSW 9 | WSW 9 | WSW 9 | WSW 8 | WSW 6 | WSW 6 | W 8 | WSW 10 |
| kJ | 161 | 109 | 49 | 19 | 2 | 336 | 254 | 169 | 96 | 4 | — | 199 | 169 | 116 | 82 | 58 | 24 | 34 | 30 | 42 | 19 |
Swell 2 Height (m) Direction Period (s) | — | — | W 13 | W 12 | — | — | — | — | — | — | — | — | — | — | — | — | — | WSW 8 | WSW 8 | W 11 | WSW 10 |
| kJ | — | — | 3 | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | 14 | 12 | 9 | 10 |
Swell 3 Height (m) Direction Period (s) | — | — | — | W 12 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 11 | — | — |
| kJ | — | — | — | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — |
Wind waves Height (m) Direction Period (s) | — | W 6 | — | SW 4 | WSW 6 | WSW 9 | — | — | — | WSW 6 | WSW 7 | — | — | — | — | — | WSW 5 | — | — | SSE 3 | SW 6 |
| kJ | — | 31 | — | 20 | 176 | 528 | — | — | — | 238 | 400 | — | — | — | — | — | 32 | — | — | 1 | 78 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 14 | 416 | 288 | 49 | 0 | 63 | 48 | 367 | 385 | 48 | 0 | 92 | 0 | 20 | 133 | 101 | 101 | 114 | 1 |
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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