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Boiler Left Surf Forecast
/ Wales – Gower (29 surf breaks) /
Surf Forecasts:
Boiler Left surfForecast / Wales – Gower / UK
12 Day Weather and Surf, issued 6 pm Monday 15 Sep 2025 BST
Best Forecast Surf Conditions for Boiler Left this week:
The most powerful waves expected at Boiler Left in the next 12 days are 3.5m 12s and forecast to arrive on Tuesday (Sep 16) at 1AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 5s period and expected on Sunday (Sep 21) at 7AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 1AM (Tue 16th Sep) | 11ft (3.5m) 12s |
Table - best surf conditions forecast for Boiler Left over the next 12 days.
Short Range Forecast Heavy rain (total 23mm), heaviest during Tue night. Very mild (max 17°C on Wed night, min 14°C on Mon night). Winds decreasing (near gales from the W on Mon afternoon, moderate winds from the WSW by Tue afternoon). | Days 3-6 Weather Summary Light rain (total 7mm), mostly falling on Sat night. Very mild (max 18°C on Thu afternoon, min 10°C on Sat night). Mainly strong winds. | ||||||||||||||||||||||
Mon 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | |||||||||||||||||
| PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |||
Rating (10 max) | |||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||||
| Wave Height (m) & direction (?) | |||||||||||||||||||||||
| Period(s) (?) | 12 | 12 | 12 | 11 | 11 | 8 | 10 | 12 | 12 | 8 | 9 | 10 | 10 | 9 | 9 | 9 | 9 | 8 | 8 | 5 | 6 | ||
Wave (?)Graph  | |||||||||||||||||||||||
| Energy (?) | 6696 | 4085 | 1957 | 800 | 244 | 1272 | 1780 | 2818 | 1553 | 600 | 1411 | 628 | 627 | 322 | 248 | 272 | 150 | 59 | 73 | 81 | 59 | ||
Wind (km/h) | |||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross- on | cross- on | cross- on | on | on | on | on | on | cross- on | cross- on | on | cross- on | cross- on | cross- on | cross- off | cross- off | cross- off | cross- off | cross- off | ||
High Tide / height (m) | 1:30AM 6.01 | 2:15PM 6.05 | 3:10AM 5.93 | 3:50PM 6.27 | 4:32AM 6.33 | 4:58PM 6.82 | 5:27AM 6.88 | 5:47PM 7.39 | 6:10AM 7.39 | 6:27PM 7.86 | 6:46AM 7.80 | 7:02PM 8.19 | 7:19AM 8.08 | ||||||||||
Low Tide / height (m) | 7:03PM 2.44 | 7:51AM 2.74 | 8:55PM 2.60 | 9:38AM 2.63 | 10:25PM 2.25 | 10:52AM 2.16 | 11:24PM 1.71 | 11:42AM 1.61 | 12:07AM 1.22 | 12:21PM 1.14 | 12:42AM 0.82 | 12:54PM 0.78 | 1:13AM 0.56 | ||||||||||
Mon 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | |||||||||||||||||
| Sunrise | - | - | 6:52 | - | - | 6:52 | - | - | 6:54 | - | - | 6:56 | - | - | 6:58 | - | - | 7:00 | - | - | 7:01 | ||
| Sunset | 7:31 | - | - | 7:30 | - | - | 7:28 | - | - | 7:24 | - | - | 7:22 | - | - | 7:21 | - | - | 7:17 | - | - | ||
 |  |  |  |  |  | |  | | | | | | | | | | |  | | | |||
Rain (mm) | 1 | - | - | - | 10 | 4 | 5 | 3 | - | - | - | - | - | 1 | - | 2 | 3 | 1 | - | 4 | - | ||
| Temp. °C | 16 | 15 | 15 | 15 | 16 | 16 | 16 | 17 | 17 | 18 | 18 | 18 | 18 | 15 | 15 | 15 | 12 | 12 | 12 | 11 | 13 | ||
| Feels °C (?) | 7 | 6 | 10 | 10 | 8 | 10 | 11 | 13 | 12 | 14 | 15 | 15 | 14 | 11 | 9 | 9 | 5 | 5 | 4 | 5 | 9 | ||
- Map Icons:
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for Wales - Gower
The wind is still cross-on at Boiler Left (fresh winds from the W at Rhossili wx 5 km from Boiler Left). A 3.8m groundswell from the WSW is too big for here
3 h 21 min ago
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 Boiler Left 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 Boiler Left Surf forecast
The above surf forecast table for Boiler Left provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Boiler Left can be found by selecting the local surf guide option on the grey menu. Our Boiler Left 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 (Boiler Left) 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 Boiler Left 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.
Boiler Left is 21 km (13 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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