Surf Forecasts:
The Boiler surf forecast from 8 Jul 2026:
- Most powerful swell: Friday 10 Jul, 10AM (local time) - 1.5ft (0.5m), 9s period, W swell with 42 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 0.5m 9s and forecast to arrive on Friday (Jul 10) at 10AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Monday (Jul 13) at 1AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10AM (Fri 10th Jul) | 1.5ft (0.5m) 9s |
Table - best surf conditions forecast for The Boiler over the next 16 days.
Alright, Rusty here. Let’s get into it. The whole 16-day window is pretty grim for a proper paddle. We’re looking at a long stretch of tiny, weak to no-surf days, so don't be in a rush.
The Boiler is an inconsistent reef break, and for the first couple of weeks, it’s just not showing any life. From Wednesday the 8th of July right through to the 22nd of July, we’ve got ankle-snappers at best. Swell heights barely scrape 2ft most days, and the wave energy is pitiful – even the best of this period, Friday the 10th of July morning, only clocks in at a combined swell energy of 42 (weak). The wind does swing favourable at times – you get some glassy mornings on the 9th and 18th, and a bit of offshore on the 10th and 21st – but there’s just no oomph in the water to work with. The direction is mostly W to WSW, which is fine for the Boiler’s exposure, but the period is often short (4 to 10 seconds), so it’s just slop.
There’s a noticeable gap of dead-flat conditions after the 20th, with energy readings of just 5 or 6 through to the 22nd.
Then, things change. On Thursday the 23rd of July, a pulse of swell finally arrives. The morning sees a 5ft WSW swell with a combined energy of 141 (moderate), but the wind is howling from the SW at 30 km/h, cross-on and lumpy. That’s a messy kite-surfing kind of day. The afternoon pushes up to a 7ft swell from the WSW, combined energy hitting 342 (moderate to strong), with a period of 7 seconds. Again, it’s accompanied by a raw 40 km/h cross-onshore wind and rain. This is big, raw, and unruly – strictly for experienced surfers only at The Boiler, and even then, it’s going to be a battle against the wind. The water temp is right around 68°F, which is 9°F above the norm for this time of year – that’s very unusual, so it’ll be a warm one if you do go.
For the whole window, there is no true standout. If you’re desperate, that Thursday the 23rd of July afternoon is the only time with any real size and power, but the conditions are brutal. For anyone else, it’s a waiting game.
Rusty.
Short Range ForecastMostly dry. Warm (max 31°C on Fri afternoon, min 16°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 29°C on Sat afternoon, min 13°C on Sun night). Winds increasing (light winds from the NW on Sat afternoon, strong winds from the ENE by Mon night). | ||||||||||||||||||||
Wednesday 8 | Thursday 9 | Friday 10 | Saturday 11 | Sunday 12 | Monday 13 | Tuesday 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) | WSW 8 | WSW 8 | W 10 | W 10 | W 5 | W 9 | W 9 | W 9 | W 8 | WSW 7 | WSW 8 | W 8 | E 4 | W 16 | W 8 | E 4 | SW 19 | E 4 | E 4 | E 4 | E 4 |
Wave Graph  | |||||||||||||||||||||
 kJ | 23 | 24 | 17 | 17 | 8 | 16 | 42 | 40 | 37 | 9 | 13 | 5 | 13 | 5 | 1 | 24 | 15 | 35 | 33 | 27 | 9 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross | cross-off | glassy | cross | cross-off | cross-on | off | cross-off | cross-on | cross-off | cross | cross-off | cross-off | cross-off | cross | cross | cross | cross | cross-off | cross-off |
High Tide | 12:30PM7.78m | 1:04AM7.90m | 1:35PM7.64m | 2:14AM7.80m | 2:51PM7.69m | 3:31AM7.90m | 4:08PM8.00m | 4:45AM8.22m | 5:17PM8.49m | 5:52AM8.65m | 6:19PM8.99m | 6:52AM9.05m | 7:15PM9.41m | ||||||||
Low Tide | 6:34PM2.68m | 7:14AM2.62m | 7:46PM2.80m | 8:27AM2.68m | 9:05PM2.71m | 9:43AM2.51m | 10:21PM2.39m | 10:54AM2.17m | 11:29PM1.95m | 11:58AM1.75m | 00:32AM1.52m | 12:56PM1.39m | 1:30AM1.17m | ||||||||
 | |  | | | | | | | | | | | | | |  |  | | |  | |
 | 5:07 | — | — | 5:09 | — | — | 5:09 | — | — | 5:11 | — | — | 5:11 | — | — | 5:13 | — | — | 5:13 | — | — |
 | — | — | 9:32 | — | — | 9:31 | — | — | 9:31 | — | — | 9:30 | — | — | 9:30 | — | — | 9:29 | — | — | 9:28 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 |
Temp °C | 20 | 21 | 18 | 22 | 25 | 23 | 26 | 31 | 28 | 27 | 29 | 27 | 24 | 29 | 23 | 23 | 29 | 23 | 24 | 30 | 26 |
Feels °C | 20 | 19 | 17 | 21 | 23 | 22 | 26 | 30 | 27 | 26 | 29 | 25 | 21 | 24 | 16 | 17 | 24 | 16 | 19 | 26 | 24 |
Swell 1 Height (m) Direction Period (s) | WSW 8 | WSW 8 | W 10 | W 10 | W 5 | W 9 | W 9 | W 9 | W 8 | WSW 7 | WSW 8 | NW 4 | W 8 | W 8 | W 8 | W 19 | SW 19 | W 15 | SW 18 | W 11 | W 10 |
| kJ | 23 | 24 | 17 | 17 | 8 | 16 | 42 | 40 | 37 | 9 | 13 | 2 | 1 | 1 | 1 | 7 | 15 | 4 | 12 | 9 | 8 |
Swell 2 Height (m) Direction Period (s) | — | — | — | W 4 | W 10 | W 5 | — | — | — | WSW 8 | — | W 8 | W 16 | W 16 | — | — | W 15 | — | W 12 | SW 18 | SW 14 |
| kJ | — | — | — | 1 | 7 | 4 | — | — | — | 7 | — | 5 | 5 | 5 | — | — | 4 | — | 3 | 12 | 7 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 8 | W 8 | — | W 14 | W 14 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | — | 4 | 4 | — |
Wind waves Height (m) Direction Period (s) | — | — | W 4 | — | — | — | — | — | — | — | — | ESE 3 | E 4 | E 4 | E 4 | E 4 | E 4 | E 4 | E 4 | E 4 | E 4 |
| kJ | — | — | 1 | — | — | — | — | — | — | — | — | 2 | 13 | 14 | 24 | 24 | 19 | 35 | 33 | 27 | 9 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 85 | 133 | 188 | 20 | 188 | 51 | 14 | 14 | 20 | 51 | 188 | 71 | 126 | 140 | 421 | 421 | 72 | 319 | 394 | 82 | 275 |
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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