Surf Forecasts:
The Boiler surf forecast from 12 Aug 2026:
- Best quality surf: Thursday 13 Aug, 1AM (local time) - 2.5ft (0.8m), 9s period, WSW swell with glassy winds.
- Most powerful swell: Thursday 13 Aug, 7PM (local time) - 3.5ft (1.0m), 10s period, W swell with 200 kJ wave energy.
- Next surfable swell (1★+): Thursday 13 Aug, 1AM (local time) - 2.5ft (0.8m), 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 Thursday (Aug 13) at 1AM. The primary swell is predicted to be 0.8m and 9s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at The Boiler in the next 16 days are 1.0m 10s and forecast to arrive on Thursday (Aug 13) at 7PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Saturday (Aug 15) at 4PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Thu 13th Aug) | 2.5ft (0.8m) 9s |
| Best Surf | 1AM (Thu 13th Aug) | 2.5ft (0.8m) 9s |
| Most Powerful | 7PM (Thu 13th Aug) | 3.5ft (1.0m) 10s |
Table - best surf conditions forecast for The Boiler over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s be straight up about The Boiler. This is a tricky little reef setup, and looking at the next 16 days, we’re basically in a waiting game. It’s inconsistent at the best of times, and the forecast is showing a whole lot of nothing for a long stretch. You’re looking at a real dry spell from now, right through the middle of August and into the end of the month.
We’ve got a gap of about 12 to 13 days with zero decent sets. The swell is tiny, the periods are short, and the energy is just not there. For the first week and a half, the wave energy is in the weak range (under 100), with the best being a meagre 149 on Thursday the 13th morning, but that’s still just a poor surf call with cross-shore wind. It’s frustrating, but it’s the kind of blank run that happens here.
The only flicker of something interesting comes right at the end of the window. On Tuesday, the 25th of August, we might finally get a session that’s borderline surfable. It’s still not great, but it’s the best on offer. The morning of the 25th shows a 3ft swell from the WSW, with a clean, offshore-ish side wind from the NW. The water temp anomaly is noted at 4° warmer than average on the 12th, so for the first break we mention, that’s very unusual – the water is feeling like a bath. That 25th morning has a combined energy of 104 (moderate), so there’s a tiny bit of push. It’s not a standout, but it’s the only break in the long grey spell. Don’t expect much, but if you’re desperate, that’s your window.
Rusty
Short Range ForecastMostly dry. Warm (max 31°C on Wed afternoon, min 14°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 20°C on Sat afternoon, min 13°C on Sun night). Winds decreasing (fresh winds from the NNW on Sat afternoon, calm by Sun morning). | |||||||||||||||||||
Wed 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | ||||||||||||||
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 10 | WSW 9 | WSW 10 | WSW 10 | WSW 10 | WSW 9 | WSW 9 | W 8 | WSW 8 | W 7 | WSW 8 | WSW 7 | WSW 7 | WSW 7 | W 7 | W 7 | WSW 6 | WSW 7 | WSW 7 | W 6 |
Wave Graph  | ||||||||||||||||||||
 kJ | 74 | 94 | 149 | 133 | 98 | 84 | 61 | 33 | 22 | 28 | 19 | 11 | 10 | 5 | 8 | 4 | 43 | 62 | 99 | 112 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | glassy | cross | cross | cross-off | cross | cross | off | off | cross-off | off | glassy | off | off | glassy | cross | cross-on | cross | cross-on | cross-off |
High Tide | 7:08PM9.53m | 7:37AM9.48m | 7:55PM9.82m | 8:21AM9.64m | 8:38PM9.89m | 9:01AM9.60m | 9:16PM9.76m | 9:37AM9.39m | 9:51PM9.46m | 10:10AM9.04m | 10:23PM9.02m | 10:41AM8.59m | 10:55PM8.48m | |||||||
Low Tide | 1:26AM1.04m | 1:41PM1.00m | 2:12AM0.82m | 2:23PM0.87m | 2:52AM0.81m | 3:01PM0.92m | 3:27AM0.99m | 3:34PM1.13m | 3:57AM1.32m | 4:04PM1.48m | 4:25AM1.75m | 4:35PM1.94m | ||||||||
 |  |  | | | | |  | | | |  | | | | |  | | | | |
 | — | — | 5:56 | — | — | 5:58 | — | — | 6:00 | — | — | 6:01 | — | — | 6:03 | — | — | 6:05 | — | — |
 | 8:45 | — | — | 8:43 | — | — | 8:40 | — | — | 8:38 | — | — | 8:37 | — | — | 8:35 | — | — | 8:32 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 31 | 26 | 25 | 25 | 20 | 21 | 21 | 17 | 21 | 20 | 15 | 16 | 17 | 14 | 17 | 17 | 17 | 19 | 18 | 19 |
Feels °C | 27 | 26 | 22 | 22 | 20 | 20 | 19 | 14 | 17 | 14 | 11 | 15 | 14 | 11 | 14 | 13 | 16 | 17 | 14 | 15 |
Swell 1 Height (m) Direction Period (s) | WSW 10 | WSW 9 | WSW 10 | WSW 10 | WSW 10 | WSW 9 | WSW 9 | W 6 | WSW 8 | W 7 | WSW 8 | WSW 7 | WSW 7 | W 4 | W 7 | W 7 | WSW 6 | WSW 7 | SW 17 | W 6 |
| kJ | 74 | 94 | 149 | 133 | 98 | 84 | 61 | 24 | 22 | 28 | 19 | 11 | 10 | 2 | 8 | 4 | 43 | 62 | 11 | 112 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | W 8 | WSW 8 | — | WNW 4 | NW 4 | — | WSW 7 | — | — | W 8 | W 16 | — | SW 17 |
| kJ | — | — | — | — | — | — | — | 33 | 6 | — | 2 | 2 | — | 5 | — | — | 10 | 5 | — | 12 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | W 11 | W 10 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | 2 | 7 | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SE 3 | — | — | WSW 2 | W 3 | — | — | NNW 3 | NNW 3 | NW 4 | NNW 4 | — | NW 3 | NNW 3 | — | SW 3 | W 5 | — | WSW 7 | — |
| kJ | 2 | — | — | 1 | 2 | — | — | 2 | 2 | 18 | 3 | — | 2 | 1 | — | 1 | 28 | — | 99 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 20 | 0 | 3 | 360 | 0 | 0 | 205 | 139 | 412 | 399 | 190 | 293 | 189 | 394 | 396 | 182 | 125 | 19 | 412 | 232 |
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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