Surf Forecasts:
The Boiler surf forecast from 9 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, WSW swell with 209 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-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Saturday (Aug 15) at 10PM.
| 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, ol’ Rusty here. I’m lookin’ at The Boiler, and I’ve got to be straight with ya: it’s gonna be a long 16 days for any surfer hopin’ to score around here.
Right from the start, there’s a gap of several days with no real surf on offer. The first hint of anything remotely surfable doesn’t show up until Thursday, the 13th of August. The swell is tiny for most of that opening stretch, with wave energy dirt low – down in the single digits – and what little swell there is has lousy short-period windswell.
Even from Thursday the 13th, it’s still weak. The morning of the 13th might be the best you’ll get: boardable size around 2 ft out of the WSW, with a clean look and light offshore wind. It’s not much, but in this flat spell, it’s the standout.
Throughout the rest of the period into the 24th of August, the swell stays stubbornly small—mostly 1.0 ft to 2 ft—and most sessions are ruined by cross-onshore or choppy breezes. A couple of mornings, like the 16th and the 20th, see glassy or light offshore conditions, but there’s just no juice. The water’s warmer than usual for the time of year, about 7°F above average, which is a bit of a freak. It’s sticky warm, but there’s nothin’ to ride.
Given the reef breaks here, the best conditions we see are only when the wind drops to nothing or comes from the N/NE, but with such tiny swell, it’s a lagoon rather than a lineup. Honestly, unless you’re keen on a flat day paddle, there’s no point gettin’ the wettie on. For a few of those blown-out, choppy afternoons, a kite might have more fun than a paddle surfer.
This is just a blank stretch for the area. Forcasts can change though, but right now, it’s grim. Keep an eye on the sky, but don’t hold your breath.
Rusty.
Short Range ForecastMostly dry. Warm (max 27°C on Tue afternoon, min 15°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 32°C on Wed afternoon, min 19°C on Thu night). Winds increasing (calm on Wed night, fresh winds from the W by Thu afternoon). | ||||||||||||||||||||
Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 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) | WSW 7 | WSW 3 | WSW 4 | WSW 6 | W 5 | SW 7 | W 8 | W 10 | WSW 11 | WSW 10 | WSW 10 | WSW 9 | WSW 9 | WSW 10 | WSW 10 | WSW 9 | W 9 | W 8 | WSW 8 | WSW 8 | W 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 4 | 1 | 4 | 24 | 8 | 7 | 5 | 7 | 25 | 57 | 74 | 92 | 86 | 173 | 125 | 84 | 57 | 34 | 51 | 60 | 52 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-off | cross-off | cross | cross-off | cross-on | cross-on | cross-on | cross-on | cross-on | glassy | cross-off | cross-off | cross-off | cross | cross | off | off | cross-off | off |
High Tide | 3:58PM7.72m | 4:41AM7.93m | 5:13PM8.36m | 5:50AM8.55m | 6:15PM9.02m | 6:47AM9.10m | 7:08PM9.53m | 7:37AM9.48m | 7:55PM9.82m | 8:21AM9.64m | 8:38PM9.89m | 9:01AM9.60m | 9:16PM9.76m | ||||||||
Low Tide | 10:18PM2.69m | 10:52AM2.46m | 11:32PM2.07m | 11:58AM1.85m | 00:33AM1.47m | 12:53PM1.33m | 1:26AM1.04m | 1:41PM1.00m | 2:12AM0.82m | 2:23PM0.87m | 2:52AM0.81m | 3:01PM0.92m | 3:27AM0.99m | ||||||||
 |  |  | | | | | | | | | | | | | |  |  | |  |  | |
 | 5:50 | — | — | 5:52 | — | — | 5:54 | — | — | 5:54 | — | — | 5:56 | — | — | 5:58 | — | — | 6:00 | — | — |
 | — | 8:51 | — | — | 8:49 | — | — | 8:46 | — | — | 8:45 | — | — | 8:43 | — | — | 8:40 | — | — | 8:38 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 3 |
Temp °C | 19 | 19 | 17 | 20 | 21 | 19 | 24 | 27 | 24 | 29 | 32 | 25 | 28 | 28 | 21 | 24 | 24 | 21 | 23 | 22 | 18 |
Feels °C | 18 | 16 | 15 | 17 | 17 | 16 | 23 | 24 | 23 | 25 | 28 | 23 | 25 | 23 | 21 | 22 | 22 | 19 | 23 | 19 | 16 |
Swell 1 Height (m) Direction Period (s) | WSW 7 | W 8 | WSW 4 | WSW 6 | W 5 | SW 7 | SW 6 | W 10 | WSW 11 | WSW 10 | WSW 10 | WSW 9 | WSW 9 | W 10 | WSW 10 | WSW 9 | W 9 | W 8 | WSW 8 | WSW 8 | W 7 |
| kJ | 4 | 1 | 4 | 24 | 8 | 7 | 2 | 7 | 25 | 57 | 74 | 92 | 86 | 130 | 125 | 84 | 57 | 34 | 51 | 60 | 52 |
Swell 2 Height (m) Direction Period (s) | W 8 | — | SW 6 | W 8 | SW 6 | W 4 | W 8 | SW 6 | S 6 | SW 6 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 1 | — | 1 | 1 | 6 | 2 | 5 | 2 | 3 | 1 | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | W 8 | — | W 8 | W 8 | W 10 | W 13 | W 8 | W 5 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | 1 | — | 1 | 1 | 2 | 3 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | WSW 3 | — | — | — | — | SE 3 | ESE 2 | — | — | ESE 2 | — | — | WSW 10 | WSW 4 | — | — | — | — | — | NNW 4 |
| kJ | — | 1 | — | — | — | — | 2 | 1 | — | — | 1 | — | — | 173 | 5 | — | — | — | — | — | 5 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 412 | 426 | 274 | 188 | 205 | 134 | 349 | 426 | 20 | 20 | 20 | 0 | 0 | 190 | 0 | 0 | 19 | 190 | 13 | 262 | 14 |
Best forecast wave conditions in Wales - Gower | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
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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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