The Boiler Surf Forecast

/ Wales – Gower (29 surf breaks) /

UK (471 surf breaks)

Surf Forecasts:

The Boiler surfForecast / Wales – Gower / UK

12 Day Weather and Surf, issued 6 pm Wednesday 17 Sep 2025 BST

Forecast update in hr min s Forecast update imminent

The Boiler surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.

Today's The Boiler sea temperature is 17.5° C
(Which is 1.8°C warmer than normal for this time of year)

Best Forecast Surf Conditions for The Boiler this week:

The most powerful waves expected at The Boiler in the next 12 days are 2.2m 12s and forecast to arrive on Thursday (Sep 18) at 1AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 4s period and expected on Monday (Sep 22) at 7AM.

Wave Type	Time (BST) & Date	Wave Height & Period
Next good surf (1 star+)	-	-
Best Surf	-	-
Most Powerful	1AM (Thu 18th Sep)	7ft (2.2m) 12s

Table - best surf conditions forecast for The Boiler over the next 12 days.

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

	Short Range Forecast Light rain (total 4mm), mostly falling on Wed afternoon. Very mild (max 18°C on Thu morning, min 15°C on Fri night). Winds decreasing (strong winds from the SW on Wed afternoon, light winds from the SSW by Fri night).											Days 3-6 Weather Summary Light rain (total 4mm), mostly falling on Sat night. Very mild (max 18°C on Sat afternoon, min 9°C on Mon night). Winds decreasing (strong winds from the SW on Sat night, light winds from the NW by Tue morning).
	Wed 17		Thursday 18			Friday 19			Saturday 20			Sunday 21			Monday 22			Tuesday 23
	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM
Rating (10 max)	0	2	0	0	0	0	1	1	0	0	0	0	0	0	0	0	0	0	0	0	0
Swell Height Map See all maps
Wave Height (m) & direction (?)	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	SW	SW	SW	SW	SW	SW	W	N	W	W	WSW
Period(s) (?)	10	12	12	11	10	10	10	10	9	9	6	11	9	13	13	13	13	3	15	13	12
Wave Graph (?)
kJ (?)	1559	1338	1158	988	516	551	428	258	146	92	36	71	27	7	7	7	3	0	4	3	28
Wind (km/h)	SW	WSW	SW	SW	SSW	S	SW	SSW	SE	SE	S	SW	SSW	ENE	NE	NE	NNE	N	ENE	NNE	NE
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross- on	cross	cross- on	cross- on	on	on	cross- on	cross- on	cross- on	cross- on	on	cross- on	cross- on	cross- off	cross- off	cross- off	off	off	cross- off	cross- off	cross- off
High Tide / height (m)			4:37AM 7.72	5:05PM 8.20		5:38AM 8.38	5:58PM 8.82		6:25AM 8.88	6:40PM 9.22		7:03AM 9.16		7:16PM 9.40	7:35AM 9.28		7:47PM 9.44	8:04AM 9.30		8:15PM 9.39	8:31AM 9.25
Low Tide / height (m)		10:25PM 2.92	10:53AM 2.77		11:30PM 2.25	11:48AM 2.13		12:18AM 1.72	12:30PM 1.68		12:56AM 1.42		1:04PM 1.44	1:27AM 1.33		1:33PM 1.34	1:53AM 1.33		1:58PM 1.32	2:17AM 1.39

	Wed 17		Thursday 18			Friday 19			Saturday 20			Sunday 21			Monday 22			Tuesday 23
Sunrise	-	-	6:54	-	-	6:56	-	-	6:56	-	-	6:58	-	-	7:01	-	-	7:01	-	-	7:03
Sunset	7:27	-	-	7:24	-	-	7:22	-	-	7:20	-	-	7:17	-	-	7:15	-	-	7:13	-	-

Rain (mm)	1	2	1	-	-	-	-	-	-	-	4	-	-	-	-	-	-	-	3	-	-
Temp. °C	17	17	18	18	17	18	18	16	17	18	17	13	13	12	14	13	11	12	14	13	12
Feels °C (?)	11	13	13	13	14	17	18	16	16	17	13	5	9	7	7	6	6	10	12	9	10

Map Icons:
Break
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

Wind Update The wind is still cross-on at The Boiler (light winds from the SW at Llethryd Barns 9 km from The Boiler). A 2.1m groundswell from the WSW
42 minutes ago The Boiler

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Actual: 42 min ago

19 km/h

Cross-On

Please reload the page to see if there are any updates.

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 12 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.