
Surf Forecasts:
The Boiler surf forecast from 3 Sep 2026:
- Best quality surf: Saturday 5 Sep, 7AM (local time) - 3.5ft (1.0m), 7s period, W swell with cross-offshore winds.
- Most powerful swell: Tuesday 8 Sep, 4AM (local time) - 8ft (2.5m), 9s period, W swell with 1,075 kJ wave energy.
- Next surfable swell (1★+): Saturday 5 Sep, 7AM (local time) - 3.5ft (1.0m), 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 7AM. The primary swell is predicted to be 1.0m and 7s period with a secondary swell of 0.5m and 9s. 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 2.5m 9s and forecast to arrive on Tuesday (Sep 08) at 4AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 5s period and expected on Monday (Sep 07) at 7AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Sat 5th Sep) | 3.5ft (1.0m) 7s |
| Best Surf | 7AM (Sat 5th Sep) | 3.5ft (1.0m) 7s |
| Most Powerful | 4AM (Tue 8th Sep) | 8ft (2.5m) 9s |
Table - best surf conditions forecast for The Boiler over the next 16 days.
The Lowdown
Alright, Rusty here. Let's have a look at what's on offer over the next couple of weeks.
Honestly, mate, this stretch is a tough one. For the most part, we're looking at a lot of small, wind-affected slop, especially through the first week. There's one real standout window that has some promise, but the rest is a waiting game.
We start off on Thursday the 3rd with a cross-onshore blow from the WSW at 16 mph pushing into a lumpy, 5ft swell at The Boiler. Not worth paddling out for. That theme carries through Friday the 4th, with a bigger 6ft swell on the cards but it's still getting hammered by that fresh breeze. The water's sitting at a very unusual 68°, which is much warmer than normal for this time of year.
Finally, on the morning of Saturday the 5th, things go glassy. We get a drop-off down to 3ft from the WSW, and with a slight breeze, it turns clean. The wave energy is weak though (107), and the 7-second period means it'll be a bit fat and slow. A session on a longboard might be worth it, but it's pretty ordinary.
The surf basically flatlines from Sunday the 6th onwards, with poor quality, weak energy readings, and dodgy winds, until we hit a proper spike. Now, here's the standout: Monday the 7th. The Boiler sees a solid 6ft groundswell from the W, with a long period of 13 seconds pumping in a hefty 1291 units of energy. The morning is clean under a moderate cross-offshore WNW breeze. This is where the swell will really wrap in nicely for a reef set-up like this. It's a classic groundswell, so expect nice, lined-up waves with long gaps between sets. It's looking decent for the intermediate crew. That afternoon holds similar size and energy, but the wind goes cross-shore and gets a bit of chop in it.
Tuesday the 8th still has a solid 8ft from the W in the morning, keeping the energy high (828) and clean under a cross-offshore wind. That's pushing towards expert territory though. By the afternoon it turns lumpy.
After that, from Wednesday the 9th through the 18th of September, it all fades away into tiny, weak dribble. Most sessions are showing poor surf conditions, with no energy to speak of. The few cleaner moments in the second week have swells under 3ft, with very weak energy readings. Not a lot to get excited about, to be honest.
Bottom line: if you've got a window, fire up for Monday the 7th and maybe Tuesday the 8th. Otherwise, it's a long stretch of flatness.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Thu night. Very mild (max 19°C on Thu night, min 13°C on Fri night). Winds decreasing (strong winds from the WSW on Thu night, calm by Sat morning). | Days 4-6 Weather SummaryLight rain (total 6mm), mostly falling on Mon night. Warm (max 23°C on Sun afternoon, min 12°C on Mon night). Winds increasing (light winds from the WSW on Sun afternoon, fresh winds from the W by Mon night). | ||||||||||||||||||||
Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | |||||||||||||||
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 8 | WSW 8 | WSW 6 | WSW 8 | WSW 8 | WSW 7 | WSW 7 | WSW 8 | WSW 9 | W 9 | WSW 6 | WSW 8 | W 13 | WSW 12 | WSW 8 | W 9 | W 8 | W 8 | W 8 | W 8 | WSW 7 |
Wave Graph | |||||||||||||||||||||
244 | 256 | 262 | 485 | 373 | 203 | 58 | 81 | 66 | 40 | 31 | 84 | 957 | 780 | 763 | 828 | 667 | 309 | 127 | 29 | 61 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-off | cross | cross-off | glassy | cross | cross | cross-on | cross-on | cross-on | cross-off | cross | cross-on | cross-off | cross | cross-off | cross-off | cross | cross-on |
High Tide | 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 | 5:45AM8.68m | 6:07PM9.17m | ||||||||
Low Tide | 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 | 11:54AM1.77m | 00:27AM1.35m | ||||||||
6:30 | — | — | 6:31 | — | — | 6:33 | — | — | 6:35 | — | — | 6:37 | — | — | 6:37 | — | — | 6:39 | — | — | |
— | 7:59 | — | — | 7:57 | — | — | 7:53 | — | — | 7:52 | — | — | 7:50 | — | — | 7:47 | — | — | 7:45 | — | |
mm | — | — | 2 | — | — | — | — | — | — | — | — | — | — | — | 5 | — | 1 | — | — | — | 2 |
Temp °C | 18 | 18 | 19 | 17 | 17 | 16 | 15 | 16 | 15 | 22 | 23 | 18 | 16 | 16 | 16 | 15 | 15 | 14 | 16 | 16 | 14 |
Feels °C | 15 | 15 | 13 | 12 | 11 | 12 | 14 | 14 | 14 | 17 | 20 | 16 | 12 | 12 | 12 | 8 | 9 | 9 | 12 | 10 | 12 |
Swell 1 Height (m) Direction Period (s) | SW 15 | SW 16 | — | SW 15 | SW 14 | SW 14 | WSW 7 | WSW 8 | WSW 9 | W 9 | WSW 6 | W 16 | W 13 | W 12 | — | — | — | W 8 | W 8 | W 8 | W 7 |
8 | 9 | — | 8 | 8 | 8 | 58 | 81 | 66 | 40 | 31 | 5 | 334 | 710 | — | — | — | 309 | 127 | 29 | 39 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | W 16 | WSW 9 | SW 13 | SW 13 | SW 13 | SW 13 | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | 5 | 42 | 7 | 7 | 7 | 6 | — | — | — | — | — | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | W 14 | SW 14 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | 4 | 7 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | WSW 8 | WSW 8 | WSW 6 | WSW 8 | WSW 8 | WSW 7 | — | — | — | SE 3 | SSE 3 | WSW 8 | W 13 | WSW 12 | WSW 8 | W 9 | W 8 | — | — | W 6 | WSW 7 |
244 | 256 | 262 | 485 | 373 | 203 | — | — | — | 4 | 4 | 84 | 957 | 780 | 763 | 828 | 667 | — | — | 24 | 61 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 133 | 387 | 144 | 116 | 360 | 48 | 0 | 133 | 13 | 48 | 253 | 122 | 9 | 119 | 138 | 151 | 360 | 3 | 190 | 119 | 14 |
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.










