Surf Forecasts:
The Boiler surf forecast from 24 Aug 2026:
- Best quality surf: Thursday 27 Aug, 10PM (local time) - 3.5ft (1.1m), 10s period, SW swell with cross-offshore winds.
- Most powerful swell: Thursday 27 Aug, 10PM (local time) - 3.5ft (1.1m), 10s period, SW swell with 235 kJ wave energy.
- Next surfable swell (1★+): Thursday 27 Aug, 10PM (local time) - 3.5ft (1.1m), 10s period with SW 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 27) at 10PM. The primary swell is predicted to be 1.1m and 10s period with a secondary swell of 0.2m and 7s. 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 1.1m 10s and forecast to arrive on Thursday (Aug 27) at 10PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 3s period and expected on Tuesday (Aug 25) at 7PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Thu 27th Aug) | 3.5ft (1.1m) 10s |
| Best Surf | 10PM (Thu 27th Aug) | 3.5ft (1.1m) 10s |
| Most Powerful | 10PM (Thu 27th Aug) | 3.5ft (1.1m) 10s |
Table - best surf conditions forecast for The Boiler over the next 16 days.
The Lowdown
Alright, let’s have a look at what’s happening at The Boiler over the next couple of weeks.
Gotta be straight with you – this is a tough stretch. The Boiler is a reef setup that’s inconsistent at the best of times, and it’s not offering much to get excited about for a long while. Most of the 16-day window is flat or very small, with messy winds and poor surf conditions. The first real chance of anything decent doesn’t show up until deep into the second week.
From Monday 24 August all the way through Thursday 27 August morning, it’s tiny – under 2 ft – with east and southeast winds blowing cross or cross-on. The swell energy is weak (between 12 and 22), and the water temp is about average for this time of year. Not worth paddling out.
Thursday 27 afternoon sees a small lift: 2 ft from the SW at 12 seconds, and the combined energy jumps to 130 (moderate). But the wind is light and cross-shore, so it’s still messy. Friday 28 morning offers 4 ft from the SW, 8 seconds, with light cross-shore breeze and moderate energy (202), but the quality is still poor. Friday afternoon turns bigger at 5 ft but period drops to 6 seconds and wind picks up to 19 mph from the WSW – that’s a lumpy cross-chop. Not great.
Saturday 29 and Sunday 30 stay poor, with onshore winds, some rain, and messy conditions. The swell energy stays moderate at best, but the wind is fresh to strong, making it a write-off. Monday 31 August morning is the first clean-ish slot – 4 ft SW at 8 seconds, WNW cross-off wind at 22 mph, and the energy is moderate (237). The wind is strong, but it’s clean. The afternoon is lumpy again.
The first few days of September are still poor, with moderate to strong onshore winds and choppy conditions. By Wednesday 2 September afternoon, the swell picks up to 8 ft from the SW, 7 seconds, with energy up to 529 (strong) – but it’s cross-on and choppy, so more of a kite-surf setup than a paddle surf one. Thursday 3 September sees 7 ft at 9 seconds from the W, energy 715 (strong) – again cross-on and messy. The swell is too big for beginners and marginal for experts due to the wind.
Now, the best stretch comes late in the window. Saturday 5 September morning is the first that gets a marginal nod – 5 ft from the W at 8 seconds, clean cross-off wind from the NW at 12 mph, moderate energy (277). That’s worth a look if you’re keen. But it’s the Sunday 6 September morning that has the real standout potential: 3 ft from the WSW at 19 seconds – that’s a very long period groundswell. The energy is strong (501) despite the modest height, and the wind is light and cross-off from the NW. This is a classic setup where the long period needs a reef or point break, so The Boiler could really shine. The water temp is still about average. Monday 7 September morning is even better – glassy conditions with 2 ft from the WSW at 15 seconds, energy 319 (moderate), and zero wind. That would be clean and lined up. The afternoon goes onshore and choppy though.
Overall, if you’re patient, the first standout is Sunday 6 September morning with that long-period groundswell and clean conditions. Monday 7 September morning is also a gem, glassy and clean. Everything before that is a struggle. The Boiler is inconsistent, but when the long-period swell lines up with light offshore winds, it can deliver.
Stay hopeful, the forecasts can change.
Rusty
Short Range ForecastMostly dry. Warm (max 26°C on Tue afternoon, min 14°C on Sun night). Winds decreasing (fresh winds from the E on Mon night, light winds from the SE by Tue night). | Days 4-6 Weather SummaryModerate rain (total 12mm), heaviest on Sat afternoon. Very mild (max 19°C on Wed night, min 15°C on Thu night). Winds increasing (light winds from the NW on Thu night, fresh winds from the SW by Sat afternoon). | ||||||||||||||||||||
Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | |||||||||||||||
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 9 | E 4 | E 4 | E 3 | E 4 | W 10 | W 9 | W 8 | W 8 | W 7 | SW 12 | SW 10 | SW 8 | WSW 6 | W 6 | WSW 7 | WSW 6 | WSW 6 | SW 7 | WSW 8 | SW 7 |
Wave Graph | |||||||||||||||||||||
8 | 9 | 13 | 8 | 6 | 8 | 14 | 12 | 10 | 9 | 110 | 188 | 196 | 142 | 153 | 82 | 79 | 17 | 16 | 154 | 189 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross | on | cross | cross-off | cross | cross | cross | cross-on | on | cross-on | cross-on | cross-on | cross |
High Tide | 4:21AM7.06m | 4:55PM7.57m | 5:22AM7.63m | 5:45PM8.16m | 6:07AM8.18m | 6:26PM8.66m | 6:45AM8.62m | 7:02PM9.05m | 7:20AM8.96m | 7:36PM9.33m | 7:53AM9.20m | 8:09PM9.52m | 8:25AM9.34m | 8:42PM9.58m | |||||||
Low Tide | 10:37AM3.32m | 11:04PM2.94m | 11:31AM2.75m | 11:52PM2.38m | 12:13PM2.23m | 00:32AM1.92m | 12:49PM1.83m | 1:08AM1.55m | 1:22PM1.53m | 1:41AM1.29m | 1:53PM1.31m | 2:12AM1.13m | 2:23PM1.21m | 2:43AM1.09m | |||||||
6:13 | — | — | 6:16 | — | — | 6:16 | — | — | 6:18 | — | — | 6:20 | — | — | 6:22 | — | — | 6:24 | — | — | |
— | 8:21 | — | — | 8:19 | — | — | 8:15 | — | — | 8:14 | — | — | 8:12 | — | — | 8:09 | — | — | 8:07 | — | |
mm | — | — | — | — | — | — | — | — | 3 | — | — | — | — | — | 1 | — | 8 | 4 | 1 | 1 | 5 |
Temp °C | 21 | 24 | 20 | 22 | 26 | 20 | 20 | 23 | 19 | 19 | 19 | 17 | 18 | 19 | 17 | 17 | 18 | 18 | 17 | 17 | 17 |
Feels °C | 15 | 19 | 14 | 18 | 22 | 19 | 20 | 20 | 17 | 19 | 18 | 16 | 14 | 15 | 15 | 15 | 13 | 12 | 11 | 9 | 12 |
Swell 1 Height (m) Direction Period (s) | WSW 9 | W 9 | W 9 | W 8 | W 8 | W 10 | W 9 | W 8 | W 8 | W 7 | SW 12 | SW 10 | W 9 | — | — | — | — | WSW 6 | SW 7 | W 12 | W 10 |
8 | 2 | 6 | 1 | 1 | 8 | 14 | 12 | 10 | 9 | 110 | 188 | 6 | — | — | — | — | 17 | 16 | 3 | 7 | |
Swell 2 Height (m) Direction Period (s) | W 10 | SW 9 | SW 13 | SW 13 | SW 8 | SW 8 | SW 8 | SSW 7 | — | S 7 | W 7 | — | — | — | — | — | — | — | SW 8 | — | — |
2 | 3 | 7 | 7 | 3 | 3 | 2 | 5 | — | 1 | 8 | — | — | — | — | — | — | — | 11 | — | — | |
Swell 3 Height (m) Direction Period (s) | SW 14 | SW 14 | S 9 | SW 9 | W 10 | — | W 13 | W 12 | SW 7 | W 12 | — | W 8 | — | — | — | — | — | — | W 5 | — | — |
8 | 8 | 1 | 3 | 2 | — | 3 | 3 | 2 | 3 | — | 1 | — | — | — | — | — | — | 2 | — | — | |
Wind waves Height (m) Direction Period (s) | E 3 | E 4 | E 4 | E 3 | E 4 | — | — | — | SE 2 | SSW 5 | SW 4 | — | SW 8 | WSW 6 | W 6 | WSW 7 | WSW 6 | — | — | WSW 8 | SW 7 |
2 | 9 | 13 | 8 | 6 | — | — | — | 2 | 5 | 12 | — | 196 | 142 | 153 | 82 | 79 | — | — | 154 | 189 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 394 | 319 | 288 | 134 | 135 | 20 | 232 | 340 | 320 | 133 | 3 | 0 | 0 | 182 | 111 | 133 | 320 | 138 | 437 | 464 | 419 |
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.











