
Surf Forecasts:
The Boiler surf forecast from 4 Sep 2026:
- Best quality surf: Saturday 5 Sep, 7AM (local time) - 3.5ft (1.1m), 7s period, W swell with cross-offshore winds.
- Most powerful swell: Monday 7 Sep, 4PM (local time) - 6.5ft (2.0m), 13s period, WSW swell with 1,275 kJ wave energy.
- Next surfable swell (1★+): Saturday 5 Sep, 7AM (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 7AM. The primary swell is predicted to be 1.1m 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 2.0m 13s and forecast to arrive on Monday (Sep 07) at 4PM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Sat 5th Sep) | 3.5ft (1.1m) 7s |
| Best Surf | 7AM (Sat 5th Sep) | 3.5ft (1.1m) 7s |
| Most Powerful | 4PM (Mon 7th Sep) | 6.5ft (2.0m) 13s |
Table - best surf conditions forecast for The Boiler over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s take a look at what’s on offer for The Boiler over the next couple of weeks. I gotta be straight with you – it’s a tough run ahead. This is a reef setup that’s inconsistent at the best of times, and right now, the conditions are just not coming together for a proper paddle session. The whole 16-day window is a bit of a write-off, I’m afraid. The swell is either too small or the wind is just too messy to make it worth your while. There’s a real gap here from the start all the way through, with no standout days to get excited about.
It kicks off on Friday, September 4th with a lumpy 5.9 ft swell from the WSW, but a fresh 22 mph cross-wind has it all chopped up and messy. The water temperature is sitting at 67.5°, which is a whopping 6.5° warmer than normal for this time of year – that’s very unusual, a real warm patch. The combined energy is moderate (420), but the surf quality is just poor. Saturday morning, the 5th, sees a drop in size to 3.3 ft from the W with a cleaner look and a gentle cross-off breeze, but it’s still pretty ordinary. The rest of that weekend and into the next week is a series of small, weak swells or bigger, wind-affected ones. We get a pulse of serious energy on Monday the 7th, with a 5.6 ft to 6.6 ft WSW groundswell and a very long 13-second period. The combined energy is strong (1001 to 1275), but a fresh cross-wind just ruins the surface. This is the kind of energy that would be better at a point or reef, but the wind is the enemy here. For a solid stretch after that, we’re looking at small, clean waves but with next to no size – 0.7 ft to 1.3 ft from the WSW and W. It stays clean with cross-off winds, but there’s nothing to ride. Even into the second week, the 18th and 19th of September, we get some glassy conditions with no wind, but the swell is a pathetic 0.7 ft to 2.0 ft from the E or W. The combined energy is barely a whisper (6 to 10). For a setup that’s already inconsistent, this blank run is pretty normal for the area. There’s just nothing here that’s worth paddling out for. If you’ve got a kite, the days with stronger wind and a bit of lump might be more interesting, but for a surfboard, it’s a hard pass.
Short Range ForecastMostly dry. Warm (max 23°C on Sun afternoon, min 14°C on Fri night). Winds decreasing (fresh winds from the W on Fri afternoon, calm by Sat night). | Days 5-7 Weather SummaryLight rain (total 7mm), mostly falling on Mon night. Very mild (max 17°C on Mon afternoon, min 14°C on Mon night). Mainly fresh winds. | |||||||||||||||||||
Fri 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | ||||||||||||||
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 | W 7 | W 7 | WSW 7 | WSW 9 | W 9 | WSW 6 | WSW 8 | W 13 | WSW 13 | WSW 8 | WSW 10 | WSW 7 | W 8 | W 7 | W 7 | W 6 | WSW 6 | WSW 7 | WSW 8 |
Wave Graph | ||||||||||||||||||||
416 | 231 | 94 | 75 | 68 | 57 | 44 | 88 | 1001 | 1275 | 507 | 603 | 360 | 408 | 311 | 217 | 94 | 135 | 254 | 257 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross-off | cross-on | cross-on | cross-on | on | cross-on | cross | cross | cross | cross | cross | cross-off | cross-off | cross | cross | cross-on | cross-on | cross |
High Tide | 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 | 6:36AM9.24m | 6:54PM9.63m | ||||||||
Low Tide | 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 | 12:42PM1.26m | 1:11AM0.99m | |||||||
— | — | 6:33 | — | — | 6:35 | — | — | 6:37 | — | — | 6:37 | — | — | 6:39 | — | — | 6:41 | — | — | |
7:57 | — | — | 7:53 | — | — | 7:52 | — | — | 7:50 | — | — | 7:47 | — | — | 7:45 | — | — | 7:43 | — | |
mm | — | — | — | — | — | — | — | — | — | — | 2 | 1 | 1 | 1 | — | — | 2 | — | — | 1 |
Temp °C | 17 | 16 | 15 | 15 | 15 | 22 | 23 | 18 | 17 | 17 | 16 | 16 | 16 | 15 | 16 | 16 | 15 | 16 | 17 | 18 |
Feels °C | 11 | 11 | 13 | 12 | 15 | 18 | 22 | 17 | 11 | 12 | 10 | 10 | 9 | 9 | 9 | 10 | 11 | 11 | 13 | 16 |
Swell 1 Height (m) Direction Period (s) | W 14 | SW 14 | W 7 | WSW 7 | WSW 9 | W 9 | WSW 6 | WSW 17 | W 13 | — | W 8 | — | — | — | — | — | W 6 | W 12 | W 11 | W 8 |
4 | 8 | 94 | 75 | 68 | 57 | 44 | 27 | 1001 | — | 355 | — | — | — | — | — | 83 | 3 | 3 | 245 | |
Swell 2 Height (m) Direction Period (s) | — | W 16 | WSW 9 | SW 14 | SW 13 | SW 13 | SW 13 | W 12 | — | — | W 11 | — | — | — | — | — | W 8 | — | W 11 | — |
— | 5 | 29 | 7 | 7 | 7 | 6 | 3 | — | — | 251 | — | — | — | — | — | 12 | — | 3 | — | |
Swell 3 Height (m) Direction Period (s) | — | SW 14 | SW 14 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | 8 | 8 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | WSW 8 | W 7 | — | WSW 6 | — | SE 2 | — | WSW 8 | — | WSW 13 | WSW 8 | WSW 10 | WSW 7 | W 8 | W 7 | W 7 | W 6 | WSW 6 | WSW 7 | WSW 8 |
416 | 231 | — | 28 | — | 1 | — | 88 | — | 1275 | 507 | 603 | 360 | 408 | 311 | 217 | 94 | 135 | 254 | 257 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 320 | 48 | 0 | 111 | 14 | 48 | 182 | 133 | 422 | 320 | 49 | 178 | 431 | 587 | 419 | 319 | 133 | 133 | 133 | 278 |
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.










