Surf Forecasts:
The Boiler surf forecast from 16 Jul 2026:
- Most powerful swell: Thursday 16 Jul, 7PM (local time) - 0.5ft (0.2m), 8s period, W swell with 8 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 0.1m 14s and forecast to arrive on Thursday (Jul 16) at 7PM. 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 4s period and expected on Sunday (Jul 19) at 1AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 7PM (Thu 16th Jul) | 0.5ft (0.2m) 8s |
Table - best surf conditions forecast for The Boiler over the next 16 days.
The Lowdown
Right, let’s be straight with you – this is a grim outlook for The Boiler. The entire 16-day window is a write-off for anything worth paddling out for. The swell never gets above 4 ft at its best, and the energy is laughable for most of the run, with a combined energy of only 16 on the first day and barely climbing into three digits by the very end of July. The water temperature is sitting at a very warm 69° – that’s a massive 9° above normal for this time of year, which is very unusual.
We kick off on Thursday, 16 July, with a tiny 0.3 ft of SW swell, but a cross-onshore ESE breeze at 9 mph makes it a mess. The afternoon cleans up a touch with a WNW wind, but the swell is gone. Friday morning, 17 July, goes glassy – dead calm – but with a pathetic 0.7 ft of west swell at 8 seconds, you’re just floating. That’s the pattern for the next week: glassy or light offshore mornings, but the swell is barely a ripple. The morning of Wednesday, 22 July, has a moderate offshore NNW wind at 16 mph, and you’ll get a clean 0.7 ft wave, but it’s a flat spell.
The only slight tick upwards comes right at the end. On Monday, 27 July, the swell finally pushes up to 3 ft to 3 ft from the WSW, but it’s plagued by light cross-onshore winds and the period is a short 5 seconds. The combined energy is still weak (57). By Wednesday, 29 July afternoon, the swell hits 4 ft from the WSW with a period of 7 seconds and the combined energy finally cracks 100 (101), but it’s under a moderate cross-shore wind that chops it up. The best of a bad bunch is Thursday, 30 July morning, with a 3 ft WSW swell, but again it’s cross-onshore and choppy. Friday, 31 July, is a total washout with a strong 25 mph SW cross-onshore wind and messy surf.
Honestly, if you’re desperate for any wave, the 4 ft swell on the 29th and 30th is the only thing that even qualifies as surf, but it’s poor quality and lumpy. The Boiler is inconsistent at the best of times, and this run is a blank. Don’t hold your breath – forecasts can change, but this one is a long shot.
Rusty.
Short Range ForecastMostly dry. Warm (max 27°C on Thu afternoon, min 13°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 22°C on Sun afternoon, min 14°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | |||||||||||||||
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 8 | WSW 8 | NW 4 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 7 | W 7 | W 10 | W 12 | W 11 | W 11 | E 3 | W 10 | W 10 | W 10 | W 10 | W 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 8 | 7 | 6 | 5 | 7 | 5 | 5 | 1 | 1 | 1 | 1 | 2 | 3 | 2 | 2 | 2 | 2 | 2 | 8 | 7 | 6 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-off | cross-off | glassy | cross | off | glassy | off | cross-off | cross | cross | off | glassy | cross-off | cross-off | glassy | cross | off | off | cross-off | cross-off |
High Tide | 8:55PM9.74m | 9:23AM9.43m | 9:40PM9.63m | 10:05AM9.21m | 10:22PM9.35m | 10:45AM8.86m | 11:01PM8.94m | 11:23AM8.43m | 11:40PM8.45m | 12:03PM7.96m | 00:23AM7.94m | 12:51PM7.52m | 1:15AM7.47m | ||||||||
Low Tide | 2:39PM1.03m | 3:12AM0.94m | 3:24PM1.08m | 3:55AM1.08m | 4:05PM1.29m | 4:34AM1.38m | 4:43PM1.62m | 5:11AM1.78m | 5:21PM2.03m | 5:48AM2.25m | 6:03PM2.48m | 6:32AM2.72m | 6:55PM2.92m | ||||||||
 | |  | | | | | | | | | | | | | | |  | | | | |
 | 5:16 | — | — | 5:16 | — | — | 5:18 | — | — | 5:20 | — | — | 5:20 | — | — | 5:22 | — | — | 5:24 | — | — |
 | — | — | 9:25 | — | — | 9:24 | — | — | 9:23 | — | — | 9:22 | — | — | 9:22 | — | — | 9:21 | — | — | 9:19 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 23 | 27 | 25 | 23 | 25 | 21 | 20 | 22 | 21 | 19 | 22 | 20 | 20 | 21 | 22 | 20 | 22 | 18 | 19 | 20 | 18 |
Feels °C | 21 | 24 | 21 | 22 | 21 | 17 | 18 | 18 | 17 | 15 | 19 | 16 | 18 | 17 | 19 | 18 | 18 | 15 | 14 | 14 | 15 |
Swell 1 Height (m) Direction Period (s) | W 8 | WSW 8 | NW 4 | W 8 | W 8 | NW 3 | W 8 | W 8 | NW 4 | W 7 | W 7 | W 10 | W 9 | W 8 | NW 4 | W 11 | W 10 | WNW 4 | W 10 | W 10 | WNW 5 |
| kJ | 5 | 7 | 4 | 5 | 5 | 3 | 5 | 1 | 1 | 1 | 1 | 2 | 2 | 1 | 3 | 2 | 2 | 1 | 8 | 7 | 2 |
Swell 2 Height (m) Direction Period (s) | W 10 | SW 7 | W 8 | SW 6 | SW 6 | W 8 | — | — | — | — | — | W 7 | — | W 11 | W 8 | W 7 | W 7 | W 10 | — | — | W 9 |
| kJ | 2 | 2 | 6 | 2 | 1 | 5 | — | — | — | — | — | 1 | — | 2 | 1 | 1 | 1 | 2 | — | — | 6 |
Swell 3 Height (m) Direction Period (s) | SW 14 | — | SW 7 | — | SW 13 | SW 6 | SW 6 | — | W 8 | — | — | — | W 12 | — | W 11 | W 8 | — | W 7 | — | — | — |
| kJ | 8 | — | 2 | — | 7 | 1 | 1 | — | 1 | — | — | — | 3 | — | 2 | 1 | — | 1 | — | — | — |
Wind waves Height (m) Direction Period (s) | E 2 | ENE 2 | — | — | — | N 3 | — | NW 3 | ENE 4 | — | — | NW 4 | — | — | NE 2 | E 3 | — | NNW 4 | NNW 3 | NW 3 | NNW 4 |
| kJ | 1 | 1 | — | — | — | 1 | — | 7 | 13 | — | — | 3 | — | — | 1 | 2 | — | 1 | 2 | 9 | 6 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 223 | 221 | 51 | 318 | 394 | 421 | 384 | 368 | 401 | 189 | 349 | 375 | 368 | 85 | 134 | 189 | 365 | 899 | 315 | 51 | |
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.
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