The Boiler Surf Break

Lat Long: 51.56° N 4.02° W

The Boiler Surf Forecast and Surf Report

Issued: 6 pm 22 Aug 2026 (local time)

Forecast update in  hr  min

Today's The Boiler sea temperature is
21.1°C
4.8° 

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 23 Aug 2026:

  • Most powerful swell: Saturday 29 Aug, 10PM (local time) - 7ft (2.1m), 7s period, WSW swell with 444 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 2.1m 7s and forecast to arrive on Saturday (Aug 29) at 10PM. 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 Tuesday (Aug 25) at 7AM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful10PM (Sat 29th Aug)7ft (2.1m) 7s

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


The Lowdown

Alright, this is Rusty. Let's talk about what's on offer for the coming weeks.

Right off the bat, I gotta be straight with you – it's looking bleak. We're staring down a long, dry spell here. The Boiler is the only spot in the frame, and it's not exactly firing. For the first week and a half or so, we're looking at tiny, weak waves and a whole lot of nothing. The water is sitting at 70°, which is a solid 9° warmer than normal for this time of year – that's very unusual.

From Saturday the 22nd right through to Wednesday the 27th of August, it’s basically a flat spell. You’ve got swell heights barely cracking 1ft, with periods all over the place but no real energy. The combined energy is mostly in the single or low double digits (values like 26 or 22). It's poor surf, plain and simple. There's a glassy moment Sunday afternoon the 23rd, but on 0.6ft waves, you're better off with a paddleboard.

Thursday the 28th of August is where things start to perk up, but it's still a mess. The swell bumps up to 5ft from the SW with a period of 9 seconds, and the energy climbs to 307. That's moderate energy, but it's coming with rain and a cross-onshore wind. The quality is gonna be poor. Friday the 29th sees the swell push over 5ft, hitting 6ft in the morning and 7ft in the afternoon. For a reef break, that's getting into the expert-only zone, especially with the wind cranking at 22 mph. The energy on Saturday afternoon hits 420 – that's strong – but it's lumpy and cross-shore. Not what you'd call clean.

The real standout, if you can call it that, is the morning of Monday the 1st of September. The swell drops back to 3ft from the WSW, the period is 7 seconds, and the wind is a clean cross-off from the WNW at 9 mph. The energy is only 79, so it's weak, but it'll be the cleanest wave we've seen in a while. It's the only time in the whole run where conditions look half-decent for a quiet paddle. This spot is inconsistent, so don't expect it to hold.

After that, it's back to poor conditions. Wind ramps up again, and the swell stays small and messy. There's a moment on Friday the 5th of September where the swell is 4ft with 154 energy, but the wind is a fresh 19 mph cross-on. That's a washing machine, not a surf.

Honestly, the only real suggestion I have is to keep an eye on the morning of Monday the 1st of September. It's a long way out, so treat it as a promising long-shot. The rest of this run is a write-off for surfing. For the beach-and-reef setup here, with the strong winds and poor quality on the bigger days, it's looking more like a kite session than a paddle surf.

Rusty, signing off.

Short Range Forecast

Mostly dry. Warm (max 23°C on Mon afternoon, min 13°C on Sat night). Winds increasing (calm on Sun afternoon, fresh winds from the E by Mon morning).

Days 5-7 Weather Summary

Heavy rain (total 30mm), heaviest during Wed night. Warm (max 23°C on Tue afternoon, min 16°C on Thu afternoon). Winds decreasing (fresh winds from the SSW on Thu afternoon, light winds from the SSW by Fri morning).

Sat
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Thursday
27
Friday
28
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
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)
0.3
WSW
10
0.3
WSW
9
0.2
W
9
0.2
WSW
9
0.3
WSW
10
0.2
WSW
9
0.5
E
4
0.2
W
9
0.6
E
3
0.4
E
3
0.2
W
10
0.2
W
9
0.3
W
8
0.3
W
8
0.3
SW
6
1
SW
8
1.3
SW
10
1.4
SW
9
1.1
SW
8
0.7
SW
8
Wave Graph
Metric surfscale
Energy kJ
18
16
8
7
20
8
7
8
8
3
7
6
12
10
6
120
355
307
162
57
Wind (km/h)
15
W
10
NNE
10
SE
0
NW
10
NNE
30
E
20
E
30
E
30
ENE
15
ENE
20
ESE
20
SE
10
SE
20
E
15
S
35
S
25
S
15
SSE
20
W
35
WNW
Wind State
cross
off
cross-on
glassy
cross-off
cross
cross
cross
cross-off
cross-off
cross
cross-on
cross-on
cross
on
on
on
cross-on
cross
cross-off
High Tide
2:58AM6.69m
3:48PM7.01m
4:21AM7.06m
4:55PM7.57m
5:22AM7.63m
5:45PM8.16m
6:07AM8.18m
6:26PM8.66m
6:45AM8.62m
7:02PM9.05m
7:20AM8.96m
7:36PM9.33m
Low Tide
8:36PM3.79m
9:21AM3.79m
10:00PM3.49m
10:37AM3.32m
11:04PM2.94m
11:31AM2.75m
11:52PM2.38m
12:13PM2.23m
00:32AM1.92m
12:49PM1.83m
1:08AM1.55m
1:22PM1.53m
1:41AM1.29m
clear
clear
clear
clear
clear
part cloud
cloud
part cloud
cloud
part cloud
part cloud
part cloud
part cloud
heavy rain
light rain
light rain
rain showers
light rain
rain showers
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:13
6:13
6:16
6:16
6:18
6:20
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:24
8:22
8:21
8:19
8:15
8:14
8:12
 mm
12
5
4
6
3
2
3
Temp °C
18
15
18
21
19
20
23
19
21
23
20
20
23
20
19
17
16
17
17
16
Feels °C
15
11
16
19
16
14
18
12
17
19
17
19
22
17
17
11
13
15
14
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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