The Boiler Surf Break

Lat Long: 51.56° N 4.02° W

The Boiler Surf Forecast and Surf Report

Issued: 6 am 14 Aug 2026 (local time)

Forecast update in  hr  min

Today's The Boiler sea temperature is
20.8° C
4.5° 

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


The Boiler surf forecast from 14 Aug 2026:

  • Best quality surf: Wednesday 19 Aug, 10PM (local time) - 3.5ft (1.0m), 6s period, W swell with cross-offshore winds.
  • Most powerful swell: Tuesday 18 Aug, 4AM (local time) - 5ft (1.5m), 6s period, W swell with 176 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 19 Aug, 10PM (local time) - 3.5ft (1.0m), 6s period with W swell.

Best Forecast Surf Conditions for The Boiler this week:

The surf forecast for The Boiler over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 19) at 10PM. The primary swell is predicted to be 1.0m and 6s period with a secondary swell of 0.1m and 16s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at The Boiler in the next 16 days are 1.5m 6s and forecast to arrive on Tuesday (Aug 18) at 4AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Saturday (Aug 15) at 4PM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+)10PM (Wed 19th Aug)3.5ft (1.0m) 6s
Best Surf10PM (Wed 19th Aug)3.5ft (1.0m) 6s
Most Powerful 4AM (Tue 18th Aug)5ft (1.5m) 6s

Table - best surf conditions forecast for The Boiler over the next 16 days.


The Lowdown

G’day, Rusty here. Look, I’ve had a good look at the charts for The Boiler and, honestly, it’s a pretty grim stretch ahead. This is one of those runs where you might as well leave the boards in the bag. We’re looking at a solid 16-day window, but there’s no proper surf to get excited about – just a whole lot of nothing. For a spot that’s already known as inconsistent, this is a particularly quiet spell. The combined swell energy barely ever gets into three digits, hanging mostly in the weak range (under 100), which tells you all you need to know.

We kick off Friday the 14th of August with a tiny 2ft swell from the WSW, period at 9 seconds. The wind is a cross W at 18 mph, so the surface is already messy. Combined energy is a weak 84. It stays like this all day, going to 2ft in the afternoon with more cross-shore wind, energy dropping to 78. Not worth paddling out.

Saturday the 15th is clean – the wind goes offshore from the NNW at 12 mph, and the surface is glassy – but the swell is just 2ft with a short 8-second period. Energy is only 41. It’s a pretty sight, but no power. Sunday morning is glassy again, but you’re looking at 1ft with a 7-second period and energy of 18. You’d struggle to get a ride.

Monday the 17th is the closest thing to a highlight, and that’s not saying much. The early morning has glassy conditions – a SW wind at 3 mph – but the swell is a pathetic 1ft with a 4-second period. Combined energy is 11. You’d be waiting forever for a knee-high dribble.

From Tuesday the 18th, the swell pushes up a little – around 2ft to 4ft – but the wind goes cross-shore or cross-onshore, with speeds up to 18 mph. It gets lumpy and choppy. Tuesday morning has a 4ft swell with 6-second period, energy at 96, but the wind is a messy cross. Not clean, not organised. By Thursday the 20th, energy climbs to 130 with a 4ft swell, but it’s blown out by a fresh cross-shore wind.

Friday the 21st gives a brief moment: a 3ft swell, 6-second period, and clean with a light NNW cross-offshore breeze. Energy is 97. The notes say “surfable waves but very ordinary conditions” and a score of 1 out of 10. That’s the only session in the whole run you could even consider, and you’d be settling for very average stuff.

After that, it fades fast. The rest of the month sees swells dropping to 0.3ft to 1ft, with some long-period energy from the SW (14 seconds) but utterly tiny. The wind turns offshore again on the 22nd and 23rd, but the swell is too small to do anything with. By the time you hit the 27th of August, the swell bumps up to 3ft with a 9-second period and energy of 162 – moderate energy, finally – but the wind is a moderate cross-onshore, making it choppy. The 28th is onshore and messy.

So, what’s the verdict? The only sniff of a wave is Friday the 21st of August in the morning at The Boiler, with a 3ft swell from the W, a 6-second period, and clean offshore-ish wind. It’s small and short period, so don’t expect much shape, but it’s the best of a bad bunch. Everywhere else, it’s flat or blown out. For a reef break that’s inconsistent anyway, a blank run like this is pretty normal for the area. Keep an eye on the forecasts – things change.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 22°C on Fri afternoon, min 13°C on Sat night). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 2mm), mostly falling on Tue night. Very mild (max 19°C on Mon morning, min 14°C on Tue night). Winds decreasing (fresh winds from the W on Tue afternoon, light winds from the NNE by Wed night).

Friday
14
Saturday
15
Sunday
16
Monday
17
Tuesday
18
Wednesday
19
Thursday
20
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.7
WSW
9
0.5
WSW
9
0.6
W
8
0.4
WSW
8
0.5
W
7
0.5
W
7
0.3
WSW
7
0.5
W
7
0.3
W
7
0.4
WSW
4
0.8
WSW
4
1.5
WSW
6
1.2
W
7
1.1
WSW
6
1.1
W
6
1.4
W
6
1.3
W
6
0.9
W
6
0.8
W
6
0.5
W
7
0.3
WSW
8
Wave Graph
Metric surfscale
Energy kJ
84
45
46
22
28
28
11
27
9
6
27
130
126
108
92
148
135
62
51
25
14
Wind (km/h)
10
W
20
WSW
20
NNW
20
N
25
NW
15
N
0
SSW
20
WSW
10
W
10
W
25
WSW
30
WSW
25
WNW
30
W
25
NW
25
NW
25
NW
10
NW
5
WNW
25
W
15
N
Wind State
cross
cross
off
off
cross-off
off
glassy
cross
cross
cross
cross-on
cross
cross-off
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross
off
High Tide
8:38PM9.89m
9:01AM9.60m
9:16PM9.76m
9:37AM9.39m
9:51PM9.46m
10:10AM9.04m
10:23PM9.02m
10:41AM8.59m
10:55PM8.48m
11:12AM8.06m
11:28PM7.89m
11:51AM7.51m
00:13AM7.29m
Low Tide
2:23PM0.87m
2:52AM0.81m
3:01PM0.92m
3:27AM0.99m
3:34PM1.13m
3:57AM1.32m
4:04PM1.48m
4:25AM1.75m
4:35PM1.94m
4:54AM2.27m
5:08PM2.48m
5:28AM2.83m
5:52PM3.08m
part cloud
cloud
clear
clear
part cloud
part cloud
part cloud
part cloud
cloud
part cloud
clear
part cloud
part cloud
part cloud
rain showers
clear
clear
part cloud
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:58
6:00
6:01
6:03
6:05
6:05
6:07
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:40
8:38
8:37
8:35
8:32
8:30
8:29
 mm
2
Temp °C
21
22
18
20
20
15
18
18
17
19
18
18
18
18
17
17
18
17
17
16
14
Feels °C
20
21
17
16
15
10
15
15
19
17
15
15
13
13
14
13
13
15
13
11
10
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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