Surf Forecasts:
The Boiler surf forecast from 8 Sep 2026:
- Best quality surf: Wednesday 9 Sep, 1PM (local time) - 3.5ft (1.0m), 8s period, W swell with cross-offshore winds.
- Most powerful swell: Friday 11 Sep, 1AM (local time) - 6ft (1.9m), 9s period, WSW swell with 579 kJ wave energy.
- Next surfable swell (1★+): Wednesday 9 Sep, 1PM (local time) - 3.5ft (1.0m), 8s 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 Wednesday (Sep 09) at 1PM. The primary swell is predicted to be 1.0m and 8s period. 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 1.9m 9s and forecast to arrive on Friday (Sep 11) at 1AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 6s period and expected on Wednesday (Sep 09) at 4PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1PM (Wed 9th Sep) | 3.5ft (1.0m) 8s |
| Best Surf | 1PM (Wed 9th Sep) | 3.5ft (1.0m) 8s |
| Most Powerful | 1AM (Fri 11th Sep) | 6ft (1.9m) 9s |
Table - best surf conditions forecast for The Boiler over the next 16 days.
The Lowdown
Alright, Rusty here again, but this time in feet and knots for you. The outlook is the same bummer, just different numbers. The Boiler is the only spot in play, and it’s a reef that’s known for being inconsistent. Over the whole 16-day stretch, the surf is marked as poor across the board. No standouts, no days to circle on the calendar. Just a long, flat run.
Tuesday the 8th of September is the closest we get to a pulse. The morning brings a west swell at about 5ft with a 9-second period. The combined energy sits at 459 – moderate. Wind is cross-off from the NW at 16 mph, keeping things clean enough for a look. But the afternoon drops to 5ft, the wind picks up to 19 mph, and conditions turn poor. Not worth changing plans for.
Wednesday the 9th sees the swell shrink to 4ft in the morning and then 3ft in the afternoon. Water temp is about 66°F, which is a solid 5° warmer than normal for this time of year – unusual, but irrelevant when the waves are that small. From Thursday the 10th onward, the swell just falls apart. By the weekend of the 12th and 13th, you’re looking at waves around 4ft at best, with cross or cross-on breezes and a fair bit of chop.
The whole second week, from the 14th of September through the 23rd, the swell never really gets above 2ft. The periods range from 8 to 13 seconds, but without any height, you’re just waiting longer for a tiny, weak wave. The combined energy numbers are all well under 100 – weak. There are a few glassy moments, like Friday the 18th afternoon when the wind goes calm, but the swell is only about 1ft. That’s a lake, not a surf break.
This is one of those stretches where the inconsistency of The Boiler gets exposed hard. No solid groundswell, no good wind alignment. Just a lot of flat water and clean but tiny waves. Sometimes you just have to take the hit and wait for the next one.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Thu afternoon. Very mild (max 18°C on Thu afternoon, min 13°C on Thu night). Winds decreasing (fresh winds from the WNW on Tue afternoon, light winds from the SW by Wed night). | Days 4-6 Weather SummaryLight rain (total 7mm), mostly falling on Sat night. Very mild (max 19°C on Sun morning, min 12°C on Fri night). Winds increasing (calm on Fri night, fresh winds from the SW by Sat night). | ||||||||||||||||||||
Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | |||||||||||||||
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) | W 9 | W 9 | W 7 | W 8 | WSW 8 | WSW 8 | SW 5 | WSW 5 | WSW 9 | WSW 9 | WSW 9 | WSW 8 | WSW 8 | WSW 5 | WSW 7 | WSW 7 | WSW 7 | WSW 9 | WSW 9 | W 9 | WSW 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 459 | 380 | 219 | 161 | 109 | 49 | 22 | 94 | 579 | 254 | 202 | 90 | 68 | 66 | 349 | 214 | 128 | 106 | 61 | 55 | 53 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross | cross-on | on | cross-on | cross-off | cross-off | cross-off | off | cross-on | cross-on | cross-on | cross | cross | cross | cross-on | cross-on | cross-on |
High Tide | 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 | 9:03AM9.43m | 9:17PM9.39m | ||||||||
Low Tide | 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 | 2:58PM1.20m | 3:16AM1.44m | |||||||
 |  |  | | | | |  |  | | |  | |  | | | | | | | | |
 | 6:37 | — | — | 6:39 | — | — | 6:41 | — | — | 6:43 | — | — | 6:45 | — | — | 6:46 | — | — | 6:48 | — | — |
 | — | 7:47 | — | — | 7:45 | — | — | 7:43 | — | — | 7:40 | — | — | 7:37 | — | — | 7:36 | — | — | 7:34 | — |
mm | — | — | — | — | — | — | — | 1 | 1 | — | — | — | — | — | 7 | — | — | — | — | — | — |
Temp °C | 16 | 16 | 15 | 15 | 16 | 14 | 17 | 18 | 17 | 16 | 16 | 13 | 15 | 16 | 17 | 19 | 18 | 16 | 18 | 18 | 18 |
Feels °C | 9 | 9 | 10 | 11 | 12 | 12 | 12 | 13 | 13 | 13 | 12 | 10 | 10 | 12 | 12 | 17 | 16 | 16 | 17 | 17 | 17 |
Swell 1 Height (m) Direction Period (s) | W 9 | — | — | W 8 | WSW 8 | WSW 8 | WSW 8 | WSW 8 | WSW 9 | WSW 9 | WSW 9 | WSW 8 | WSW 8 | WSW 8 | — | — | WSW 7 | WSW 9 | WSW 9 | W 9 | WSW 8 |
| kJ | 459 | — | — | 161 | 109 | 49 | 19 | 6 | 579 | 254 | 202 | 90 | 68 | 22 | — | — | 128 | 106 | 61 | 55 | 53 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | W 13 | W 12 | W 11 | — | — | — | — | — | — | — | — | W 13 | — | — | — | — |
| kJ | — | — | — | — | — | 3 | 3 | 2 | — | — | — | — | — | — | — | — | 3 | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | W 12 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | W 9 | W 7 | NNW 3 | W 6 | — | SW 5 | WSW 5 | — | — | — | — | — | WSW 5 | WSW 7 | WSW 7 | — | — | — | — | — |
| kJ | — | 380 | 219 | 2 | 31 | — | 22 | 94 | — | — | — | — | — | 66 | 349 | 214 | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 9 | 898 | 151 | 0 | 133 | 48 | 308 | 253 | 9 | 0 | 19 | 0 | 48 | 360 | 278 | 144 | 367 | 111 | 20 | 182 | 101 |
Best forecast wave conditions in Wales - Gower | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
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.
Nearest