Surf Forecasts:
The Boiler surf forecast from 21 Jul 2026:
- Most powerful swell: Monday 27 Jul, 10AM (local time) - 3.5ft (1.0m), 7s period, W swell with 88 kJ wave energy.
Best Forecast Surf Conditions for The Boiler this week:
The most powerful waves expected at The Boiler in the next 16 days are 1.0m 7s and forecast to arrive on Monday (Jul 27) at 10AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 5s period and expected on Sunday (Jul 26) at 10PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10AM (Mon 27th Jul) | 3.5ft (1.0m) 7s |
Table - best surf conditions forecast for The Boiler over the next 16 days.
The Lowdown
Alright, it's a bit of a flat spell here for the foreseeable future. We've got a 16-day window on the books, and honestly, it’s looking like a tough stretch with no real standout sessions on the horizon. Even the best days are only offering knee-high dribble. So let's be real about what we're working with.
The Boiler (reef) is the only game in town, and it’s a spot that's already inconsistent by nature, so a run like this isn't totally out of the ordinary. Right from the start on Monday the 20th, it’s tiny 0.3ft west swell with a 11-second period, but it's cross-shore wind making it choppy. That sets the tone. The water is a balmy 69°F, which is a whopping 9°F warmer than usual for this time of year – weirdly tropical for July, but not much use without waves.
Moving through the week, we see a few brief moments of hope. Thursday morning the 23rd goes glassy with a 0.7ft west swell, but that's barely enough to tickle the reef. The combined energy is only 10 (weak energy), so you're really just floating out there. Friday the 24th morning is also glassy, but with a 0.3ft west swell and a very long 13-second period. It’s clean but tiny. The real problem is that the swell size never climbs above 1.0ft for the first nine days, and the winds are often a mess.
The only slight pulse of life comes early in the second week. On Monday the 27th, we see a 3ft west swell with an 88 combined energy (moderate energy) and clean offshore cross-off winds from the WNW. It’s the biggest and cleanest it gets, but 3ft is still small, and it’s short period at 7 seconds, meaning it will be weak and crumbly. By Tuesday the 28th, it’s already dropping back to 2ft with lumpy cross-shore winds. For the rest of the run into early August, it’s mostly tiny junk with onshore or cross winds, and even a bit of rain showing up around the 3rd and 4th.
Look, between the consistent lack of size, the persistent side winds, and the spot being so inconsistent anyway, there’s nothing here that gets me excited. You might be able to get wet on a longboard during those glassy mornings on the 23rd or 24th, but you're not really surfing. A blank run like this is more common for this area than you'd hope. Forecasts can always change, but right now, I’d be saving your energy for another week.
Rusty
Short Range ForecastMostly dry. Warm (max 23°C on Tue afternoon, min 13°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 8mm), mostly falling on Sat afternoon. Warm (max 24°C on Thu afternoon, min 15°C on Sat night). Wind will be generally light. | |||||||||||||||||||
Mon 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | ||||||||||||||
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 11 | W 11 | W 11 | W 10 | W 16 | W 10 | W 9 | W 9 | W 9 | W 8 | W 8 | W 13 | W 8 | W 3 | W 4 | W 5 | WSW 6 | WSW 6 | W 6 | W 6 |
Wave Graph  | ||||||||||||||||||||
 kJ | 2 | 2 | 2 | 2 | 5 | 8 | 7 | 6 | 6 | 1 | 1 | 3 | 1 | 1 | 3 | 9 | 43 | 46 | 57 | 27 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | off | on | cross | off | off | cross-on | off | glassy | cross | off | glassy | cross | cross-off | cross-off | cross | cross-off | cross-off | cross-off | off |
High Tide | 11:40PM8.45m | 12:03PM7.96m | 00:23AM7.94m | 12:51PM7.52m | 1:15AM7.47m | 1:53PM7.20m | 2:22AM7.17m | 3:07PM7.14m | 3:36AM7.15m | 4:18PM7.38m | 4:45AM7.40m | 5:18PM7.78m | ||||||||
Low Tide | 5:21PM2.03m | 5:48AM2.25m | 6:03PM2.48m | 6:32AM2.72m | 6:55PM2.92m | 7:29AM3.13m | 8:02PM3.24m | 8:40AM3.34m | 9:16PM3.29m | 9:53AM3.26m | 10:24PM3.08m | 10:57AM2.97m | 11:22PM2.74m | |||||||
 |  | | | |  | | | | | | | |  |  |  |  | | | | |
 | — | — | 5:22 | — | — | 5:24 | — | — | 5:24 | — | — | 5:26 | — | — | 5:28 | — | — | 5:28 | — | — |
 | — | 9:22 | — | — | 9:21 | — | — | 9:19 | — | — | 9:17 | — | — | 9:16 | — | — | 9:15 | — | — | 9:14 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 6 | 2 | — | — | — |
Temp °C | 22 | 18 | 21 | 23 | 19 | 19 | 22 | 21 | 21 | 24 | 20 | 21 | 22 | 20 | 18 | 17 | 16 | 20 | 20 | 17 |
Feels °C | 18 | 15 | 20 | 20 | 16 | 18 | 20 | 19 | 20 | 22 | 17 | 18 | 18 | 18 | 16 | 12 | 13 | 16 | 15 | 15 |
Swell 1 Height (m) Direction Period (s) | W 8 | NW 4 | W 11 | W 10 | W 10 | W 10 | W 9 | NW 4 | W 9 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | WSW 6 | WSW 6 | — | W 6 |
| kJ | 1 | 3 | 2 | 2 | 2 | 8 | 7 | 3 | 6 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 43 | 46 | — | 27 |
Swell 2 Height (m) Direction Period (s) | — | W 8 | W 7 | W 7 | W 7 | — | — | W 9 | W 15 | — | — | W 13 | — | — | — | — | — | — | — | W 8 |
| kJ | — | 1 | 1 | 1 | 1 | — | — | 6 | 4 | — | — | 3 | — | — | — | — | — | — | — | 6 |
Swell 3 Height (m) Direction Period (s) | W 11 | W 11 | — | — | W 16 | W 7 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 2 | 2 | — | — | 5 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | NW 4 | NNW 4 | WNW 3 | — | — | — | — | — | WSW 2 | W 3 | W 4 | W 5 | — | — | W 6 | — |
| kJ | — | — | — | — | 3 | 1 | 1 | — | — | — | — | — | 1 | 1 | 3 | 9 | — | — | 57 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 760 | 375 | 85 | 189 | 196 | 395 | 473 | 349 | 126 | 201 | 365 | 437 | 441 | 426 | 441 | 784 | 360 | 139 | 360 | 360 |
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.
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