
Surf Forecasts:
The Boiler surf forecast from 2 Sep 2026:
- Best quality surf: Saturday 5 Sep, 4AM (local time) - 3.5ft (1.1m), 7s period, W swell with cross-offshore winds.
- Most powerful swell: Monday 7 Sep, 4PM (local time) - 7ft (2.2m), 12s period, WSW swell with 1,224 kJ wave energy.
- Next surfable swell (1★+): Saturday 5 Sep, 4AM (local time) - 3.5ft (1.1m), 7s period with W 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 Saturday (Sep 05) at 4AM. The primary swell is predicted to be 1.1m and 7s period with a secondary swell of 0.1m and 14s. 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 2.2m 12s and forecast to arrive on Monday (Sep 07) at 4PM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Sat 5th Sep) | 3.5ft (1.1m) 7s |
| Best Surf | 4AM (Sat 5th Sep) | 3.5ft (1.1m) 7s |
| Most Powerful | 4PM (Mon 7th Sep) | 7ft (2.2m) 12s |
Table - best surf conditions forecast for The Boiler over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's have a proper look at what's on the table for The Boiler over the next couple of weeks.
It's a bit of a tough start, honestly. The Boiler is a tricky reef setup that's inconsistent, and this forecast is a real mixed bag of wind and swell. The water is sitting at about 68°F right now, which is a solid 7°F warmer than you'd expect for this time of year – that's very unusual, and it feels like summer's hanging on.
We don't see anything worth paddling for until Friday, September 4th. The morning brings a 6ft swell from the WSW with a period of 8 seconds, and the wind is a clean cross-offshore from the WNW. The combined energy reads a moderate 456, and the conditions are described as clean. That's our first real window, but it's not a standout; the swell is a bit lumpy underneath.
The real standout, the one that's got my heart beating a little faster, is Saturday morning, September 5th. The wind goes completely glassy, dead calm, and we've got a 3ft swell from the WSW with a 7-second period. The energy is weak at 98, but it doesn't matter. Glassy conditions on a reef break like this are a rare gift. It'll be small, clean, and perfect for a longboard or a funboard. The crowds are a possibility here, so get in early for the glass-off.
After that, things get messy again. The 7th of September sees a solid 7ft swell from the WSW with a long 12-second period, which is a groundswell, and the energy is very strong at 1224. But the wind is a strong cross-onshore breeze at 28 mph, making it a messy, blown-out mess. That's expert-only territory, and even then, it's not looking good.
The 9th of September, Wednesday morning, is worth a mention. We've got a 7ft swell from the W with an 8-second period, and the wind is a clean cross-offshore. The energy is at 597. It's a solid, powerful wave, but it's big. Beginners should stay well clear. For the experienced crew, it could offer some tough, powerful walls, but the quality is marginal.
The second week, from the 10th onwards, drops right off. Swell heights barely scrape 2ft, with periods under 8 seconds and energy numbers in the teens and twenties. Most of the time, the wind is either onshore or cross-shore, offering nothing worth chasing. There's a brief window on Saturday the 12th with a clean cross-offshore breeze, but it's only 1ft of swell – barely a ripple.
So, to sum it up: the best bet is definitely Saturday morning, September 5th, for a tiny, glassy, clean session. The other potential is Wednesday morning, September 9th, for the bigger, more experienced crew. For the rest of the 16 days, it's a long gap of flat, windy, or messy conditions. Forecasts can change, but right now, it's a waiting game.
Rusty.
Short Range ForecastLight rain (total 5mm), mostly falling on Wed morning. Very mild (max 19°C on Wed afternoon, min 13°C on Fri night). Winds decreasing (strong winds from the WSW on Thu night, light winds from the NNW by Fri night). | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Mon afternoon. Warm (max 24°C on Sun afternoon, min 13°C on Sat morning). Winds increasing (calm on Sat morning, strong winds from the WSW by Mon afternoon). | ||||||||||||||||||||
Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | |||||||||||||||
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) | SW 6 | WSW 7 | WSW 7 | WSW 8 | WSW 8 | WSW 6 | WSW 8 | WSW 8 | WSW 7 | WSW 7 | WSW 10 | WSW 9 | WSW 9 | WSW 8 | WSW 5 | W 12 | WSW 12 | WSW 9 | WSW 9 | WSW 7 | W 8 |
Wave Graph | |||||||||||||||||||||
72 | 262 | 344 | 244 | 214 | 370 | 448 | 350 | 164 | 82 | 96 | 65 | 26 | 22 | 46 | 274 | 1224 | 775 | 653 | 360 | 544 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-off | cross | cross-off | glassy | cross-on | cross | cross-on | cross-on | cross-on | cross | cross-on | cross | cross | cross | cross-off |
High Tide | 10:01AM8.93m | 10:23PM8.83m | 10:38AM8.51m | 11:04PM8.29m | 11:24AM7.96m | 00:02AM7.65m | 12:36PM7.40m | 1:34AM7.19m | 2:22PM7.24m | 3:19AM7.32m | 3:58PM7.71m | 4:43AM7.95m | 5:11PM8.48m | ||||||||
Low Tide | 3:57PM1.70m | 4:20AM1.90m | 4:35PM2.16m | 5:02AM2.45m | 5:26PM2.76m | 6:02AM3.09m | 6:51PM3.32m | 7:47AM3.49m | 8:54PM3.32m | 9:37AM3.19m | 10:26PM2.71m | 10:56AM2.48m | 11:34PM1.96m | ||||||||
6:28 | — | — | 6:30 | — | — | 6:31 | — | — | 6:33 | — | — | 6:35 | — | — | 6:37 | — | — | 6:37 | — | — | |
— | 8:00 | — | — | 7:59 | — | — | 7:57 | — | — | 7:53 | — | — | 7:52 | — | — | 7:50 | — | — | 7:47 | — | |
mm | 2 | 1 | — | — | — | 2 | — | — | — | — | — | — | — | — | 1 | — | 3 | — | 1 | 2 | — |
Temp °C | 18 | 19 | 18 | 18 | 18 | 19 | 17 | 17 | 16 | 15 | 16 | 16 | 19 | 24 | 18 | 17 | 16 | 15 | 16 | 16 | 14 |
Feels °C | 13 | 15 | 14 | 15 | 15 | 12 | 11 | 11 | 12 | 14 | 15 | 14 | 15 | 19 | 17 | 10 | 9 | 7 | 9 | 9 | 8 |
Swell 1 Height (m) Direction Period (s) | SW 16 | — | W 15 | SW 15 | — | — | SW 15 | SW 14 | WSW 7 | WSW 7 | WSW 10 | WSW 9 | WSW 9 | WSW 8 | WSW 8 | W 12 | — | — | — | — | — |
10 | — | 4 | 8 | — | — | 8 | 8 | 164 | 82 | 96 | 65 | 26 | 22 | 14 | 274 | — | — | — | — | — | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | W 5 | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | 8 | 8 | 7 | 7 | 7 | 6 | 2 | — | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | W 15 | SW 14 | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | 4 | 8 | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | SW 6 | WSW 7 | WSW 7 | WSW 8 | WSW 8 | WSW 6 | WSW 8 | WSW 8 | — | — | — | — | ESE 3 | SSE 4 | WSW 5 | WSW 7 | WSW 12 | WSW 9 | WSW 9 | WSW 7 | W 8 |
72 | 262 | 344 | 244 | 214 | 370 | 448 | 350 | — | — | — | — | 8 | 13 | 46 | 270 | 1224 | 775 | 653 | 360 | 544 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 416 | 320 | 182 | 133 | 320 | 175 | 360 | 278 | 48 | 0 | 120 | 20 | 253 | 20 | 20 | 441 | 49 | 431 | 644 | 597 | 278 |
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.










