Surf Forecasts:
The Boiler surf forecast from 7 Sep 2026:
- Best quality surf: Tuesday 8 Sep, 7AM (local time) - 6ft (1.8m), 8s period, WSW swell with cross-offshore winds.
- Most powerful swell: Tuesday 8 Sep, 1AM (local time) - 6.5ft (2.0m), 12s period, WSW swell with 1,066 kJ wave energy.
- Next surfable swell (1★+): Tuesday 8 Sep, 7AM (local time) - 6ft (1.8m), 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 Tuesday (Sep 08) at 7AM. The primary swell is predicted to be 1.8m and 8s period with a secondary swell of 0.8m and 10s. 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 2.0m 12s and forecast to arrive on Tuesday (Sep 08) at 1AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 4s period and expected on Wednesday (Sep 09) at 4AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Tue 8th Sep) | 6ft (1.8m) 8s |
| Best Surf | 7AM (Tue 8th Sep) | 6ft (1.8m) 8s |
| Most Powerful | 1AM (Tue 8th Sep) | 6.5ft (2.0m) 12s |
Table - best surf conditions forecast for The Boiler over the next 16 days.
The Lowdown
Alright folks, it’s Rusty here. Let’s have a look at what’s happening at The Boiler.
First up, the water is sitting at 67° right now, which is a whopping 6° warmer than usual for this time of year. That’s very unusual, so you’re in for a tropical-feeling bath, not the usual autumn chill.
The overall outlook is a bit of a flat spell, to be honest. There’s a little pulse of energy early on, but it’s short-lived. Monday afternoon, the 7th of September, sees the biggest swell of the whole run with a 6ft swell from the WSW, but the wind is 19 mph cross-shore and the conditions are lumpy and poor. The combined energy hits 931, which is moderate, but the quality just isn’t there. That’s a no-go for paddling.
The best window in the whole 16-day forecast is actually Friday morning, the 11th of September. Early Friday, you’ve got a 4ft swell from the WSW, a 9-second period, and the wind is light offshore at 6 mph from the NNW. It’s clean out there, with 243 combined energy – that’s solid moderate energy. For a reef break like The Boiler, that offshore wind and that size is a treat. The water is still warm, and the conditions are “clean.” That’s your standout. The only catch is it’s inconsistent here, so you’ll be waiting for sets, but when they come, they’ll be worth it. Crowds are possible, so get in early.
After that Friday morning window, it drops off fast. Saturday and Sunday are small, weak, and blown out. The following week is a long, dry stretch of tiny surf – nothing over 3ft for days, and most of it is under 2ft with messy cross-shore winds. There’s a brief flicker on Sunday the 20th of September with a 3ft swell from the west and light offshore wind in the morning, with 132 combined energy, but it’s still pretty ordinary and not a patch on that Friday.
So, in short: Friday the 11th of September, early morning, is your only real chance for a decent surf. The rest of the 16 days is mostly a write-off with small, messy, or flat conditions. Don’t hold your breath for the second week – it’s barren.
Rusty.
Short Range ForecastLight rain (total 9mm), mostly falling on Mon night. Very mild (max 17°C on Mon afternoon, min 12°C on Tue night). Winds decreasing (fresh winds from the WSW on Mon afternoon, calm by Wed night). | Days 5-7 Weather SummaryModerate rain (total 15mm), heaviest on Sat afternoon. Very mild (max 17°C on Thu afternoon, min 12°C on Fri night). Winds increasing (light winds from the N on Fri night, fresh winds from the SW by Sat afternoon). | |||||||||||||||||||
Mon 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | ||||||||||||||
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 13 | WSW 12 | WSW 9 | W 9 | W 6 | W 8 | WSW 8 | WSW 8 | WSW 8 | WSW 4 | WSW 7 | WSW 9 | WSW 9 | WSW 8 | WSW 8 | WSW 4 | WSW 7 | WSW 7 | WSW 7 | WSW 9 |
Wave Graph  | ||||||||||||||||||||
 kJ | 931 | 1066 | 442 | 380 | 141 | 161 | 87 | 49 | 32 | 30 | 280 | 243 | 162 | 87 | 45 | 29 | 240 | 151 | 105 | 106 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-off | cross-off | cross-off | cross-off | cross | glassy | on | cross-on | cross-on | off | cross-off | off | cross-on | cross-on | cross-off | cross-off | cross-off | cross-on |
High Tide | 4:43AM7.95m | 5:11PM8.48m | 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 | ||||||||
Low Tide | 10:26PM2.71m | 10:56AM2.48m | 11:34PM1.96m | 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 | |||||||
 |  |  |  |  | | |  | | |  | | | | |  | | | | | |
 | — | — | 6:37 | — | — | 6:39 | — | — | 6:41 | — | — | 6:43 | — | — | 6:45 | — | — | 6:46 | — | — |
 | 7:50 | — | — | 7:47 | — | — | 7:45 | — | — | 7:43 | — | — | 7:40 | — | — | 7:37 | — | — | 7:36 | — |
mm | — | 9 | — | — | — | — | — | — | — | — | 3 | — | — | — | — | 8 | 4 | — | — | — |
Temp °C | 17 | 15 | 16 | 16 | 15 | 16 | 16 | 13 | 16 | 17 | 17 | 17 | 17 | 14 | 15 | 16 | 17 | 15 | 16 | 16 |
Feels °C | 12 | 10 | 10 | 9 | 10 | 13 | 12 | 11 | 12 | 12 | 15 | 15 | 14 | 11 | 10 | 11 | 13 | 11 | 12 | 14 |
Swell 1 Height (m) Direction Period (s) | — | W 12 | WSW 9 | — | WSW 8 | W 8 | WSW 8 | WSW 8 | WSW 8 | W 11 | WSW 7 | WSW 9 | WSW 9 | WSW 8 | WSW 8 | W 15 | W 7 | WSW 7 | WSW 7 | WSW 9 |
| kJ | — | 786 | 442 | — | 57 | 161 | 87 | 49 | 32 | 2 | 172 | 243 | 162 | 87 | 45 | 4 | 233 | 151 | 105 | 106 |
Swell 2 Height (m) Direction Period (s) | — | — | WSW 10 | — | — | — | — | W 13 | W 12 | W 11 | — | — | — | — | W 16 | — | — | — | W 13 | — |
| kJ | — | — | 106 | — | — | — | — | 3 | 3 | 2 | — | — | — | — | 5 | — | — | — | 3 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WSW 13 | WSW 12 | — | W 9 | W 6 | — | — | — | SW 3 | WSW 4 | WSW 7 | — | — | — | — | WSW 4 | WSW 7 | — | — | — |
| kJ | 931 | 1066 | — | 380 | 141 | — | — | — | 2 | 30 | 280 | — | — | — | — | 29 | 240 | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 138 | 138 | 9 | 360 | 0 | 0 | 133 | 48 | 167 | 308 | 133 | 0 | 0 | 0 | 122 | 320 | 278 | 151 | 48 | 101 |
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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