Surf Forecasts:
The Boiler surf forecast from 10 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 194 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 0.5m 3s period and expected on Friday (Aug 14) at 7PM.
| 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, let's talk about what's happening on the water.
Honestly, the outlook for the next couple of weeks is a real mixed bag, and to be fair, it's mostly a quiet one. The swell is just not showing up with any real punch, and the wind is playing games. We've got The Boiler as the only spot in the mix, and it's an inconsistent reef break, so we're working with what we've got. The first real glimmer of something rideable doesn't pop up until Thursday, the 13th of August. Before that, from Sunday through Wednesday, it's just flat or so weak it's not worth paddling out for. There's a long gap of nothing.
So, Thursday morning, the 13th of August, that's our first chance. The Boiler is seeing a 3ft swell from the WSW with a 10-second period (moderate energy at 147). The key here is the wind – it's glassy. Dead calm. That's a huge positive for a reef break. The water temp is a very unusual 68°, which is 7° warmer than normal for this time of year. It's a tiny wave, but if you're desperate for a surf and don't mind the small stuff, this is the best the whole run has to offer. It's the only time the score suggests "surfable" waves. Keep in mind, it's inconsistent, and it might get a little busy as it's sometimes crowded.
After that Thursday morning window, the wind gets messy again. Friday the 14th stays small and weak, and while Saturday the 15th has a clean offshore breeze from the NNW at 16 mph, the swell drops right back down to 1ft. It's clean, but it's tiny.
Looking further out, around Tuesday the 18th of August, the swell bumps up a touch to 4ft from the west, but the period is a short 7 seconds and the wind is cross-shore. It's not going to be pretty. Later in the week, Thursday the 20th sees a similar 4ft west swell but with a light cross-shore wind – still not great. By Friday the 21st, that west swell is the same height, but a fresh cross-shore wind from the east at 19 mph will chop it right up.
Honestly, for a wave over 5ft or any real quality, there's nothing on the cards. If the wind keeps up and the swell stays weak, this might be more of a kite-surfing setup than a paddle-surfing one, especially on the breezier days.
Keep your expectations low, and maybe check back in a few days to see if the models shift. This is a real dry spell for The Boiler.
Rusty.
Short Range ForecastMostly dry. Warm (max 31°C on Wed afternoon, min 14°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 30°C on Thu afternoon, min 16°C on Fri night). Winds increasing (calm on Thu morning, fresh winds from the NNW by Sat afternoon). | ||||||||||||||||||||
Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | |||||||||||||||
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 6 | SW 6 | SW 7 | W 8 | W 10 | WSW 11 | WSW 10 | WSW 10 | WSW 9 | WSW 10 | WSW 10 | WSW 10 | WSW 9 | W 9 | WSW 8 | W 8 | W 8 | WSW 8 | WSW 7 | WSW 7 | W 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 33 | 10 | 7 | 5 | 7 | 25 | 58 | 74 | 92 | 152 | 131 | 125 | 108 | 123 | 70 | 46 | 41 | 19 | 11 | 11 | 4 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross | cross-off | cross-on | cross-on | cross | cross-on | cross-on | glassy | glassy | cross-off | cross-off | cross-off | cross-off | off | off | cross-off | off | off | cross | cross-off |
High Tide | 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 | 9:37AM9.39m | 9:51PM9.46m | |||||||
Low Tide | 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 | 3:34PM1.13m | 3:57AM1.32m | |||||||
 | |  |  | | | | | | | |  | | | | | | | | |  | |
 | 5:52 | — | — | 5:54 | — | — | 5:54 | — | — | 5:56 | — | — | 5:58 | — | — | 6:00 | — | — | 6:01 | — | — |
 | — | 8:49 | — | — | 8:46 | — | — | 8:45 | — | — | 8:43 | — | — | 8:40 | — | — | 8:38 | — | — | 8:37 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 19 | 21 | 19 | 23 | 26 | 23 | 27 | 31 | 26 | 28 | 30 | 21 | 23 | 23 | 17 | 21 | 21 | 15 | 20 | 22 | 17 |
Feels °C | 17 | 19 | 17 | 21 | 23 | 22 | 23 | 29 | 24 | 25 | 27 | 21 | 21 | 19 | 14 | 16 | 15 | 9 | 17 | 17 | 13 |
Swell 1 Height (m) Direction Period (s) | WSW 6 | W 5 | SW 7 | SW 6 | W 10 | WSW 11 | WSW 10 | WSW 10 | WSW 9 | WSW 10 | WSW 10 | WSW 10 | WSW 9 | W 9 | WSW 8 | W 8 | W 8 | WSW 8 | WSW 7 | WSW 7 | W 7 |
| kJ | 33 | 9 | 7 | 2 | 7 | 25 | 58 | 74 | 92 | 152 | 131 | 125 | 108 | 40 | 70 | 46 | 41 | 19 | 11 | 11 | 4 |
Swell 2 Height (m) Direction Period (s) | W 8 | SW 6 | W 5 | W 8 | SW 6 | W 9 | — | — | — | — | — | W 4 | — | — | — | — | WSW 8 | WNW 4 | — | — | — |
| kJ | 1 | 10 | 2 | 5 | 2 | 6 | — | — | — | — | — | 9 | — | — | — | — | 12 | 1 | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | W 8 | W 8 | W 10 | W 13 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | 1 | 1 | 2 | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | SE 3 | ESE 3 | — | SE 2 | — | — | — | — | W 5 | — | W 9 | — | — | — | N 3 | — | — | — |
| kJ | — | — | — | 2 | 1 | — | 1 | — | — | — | — | 15 | — | 123 | — | — | — | 1 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 188 | 190 | 134 | 393 | 361 | 20 | 20 | 6 | 0 | 0 | 151 | 0 | 0 | 3 | 0 | 139 | 139 | 394 | 421 | 130 | 178 |
Best forecast wave conditions in Wales - Gower | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
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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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