The Boiler Surf Break

Lat Long: 51.56° N 4.02° W

The Boiler Surf Forecast and Surf Report

Issued: 12 pm 27 Jul 2026 (local time)

Forecast update in  hr  min

Today's The Boiler sea temperature is
20.7° 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 27 Jul 2026:

  • Most powerful swell: Monday 27 Jul, 7PM (local time) - 3ft (0.9m), 6s period, WSW swell with 66 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 0.9m 6s and forecast to arrive on Monday (Jul 27) at 7PM. 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 4s period and expected on Saturday (Aug 01) at 7PM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 7PM (Mon 27th Jul)3ft (0.9m) 6s

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


The Lowdown

Alright, let’s break it down in feet and miles per hour for you.

It’s a rough run coming up at The Boiler. The next two weeks are mostly flat and blown out, with a big quiet stretch right in the middle. From the start of next week through the middle of the second week, there’s basically nothing. But there’s a tiny window of hope at the very end.

Starting Monday 27 July, it’s ugly. The swell is a weak 3ft from the west, with a short, weak period of 6 seconds and a combined energy of just 81 (weak energy). The wind is a messy cross-shore at 12 mph, making it choppy and unrideable. This flat, poor pattern just drags on. By Tuesday 28 July, the swell drops to 2ft, and the energy is down to 35 – barely a ripple. The water temperature is 69°, which is 9° warmer than usual, so very unusual – it’s like a hot tub out there.

We get a brief moment of calm on Friday 31 July morning, with a light northwesterly breeze making things clean, but the swell is only 2ft and weak. Don’t get excited. Then we hit the real dead zone. From Saturday 1 August right through to Saturday 8 August, the swell is flat – consistently 0.7ft to 1.0ft – with combined energy values in the single digits or low teens. The wind is a mess of cross and cross-on, with a few glassy spells on Sunday 2 August morning, but there’s just no ocean energy to work with. It’s a solid week of nothing worth paddling for.

Then, on Sunday 9 August, the charts finally start to show something. The afternoon brings a 4ft swell from the west-southwest, with a period of 11 seconds and a combined energy of 483 (strong wave energy). That’s a real groundswell kicking in. But the wind is a cross-on 15 mph, so it’s going to be messy and choppy again. Not clean.

The real standout, and the only one worth marking on your calendar, comes on Monday 10 August. Morning session at The Boiler sees a 5ft swell from the west-southwest, with a 10-second period and a combined energy of 411 (strong wave energy). The magic is the wind – a light offshore from the north-northwest at 6 mph, making for clean, groomed faces. This is a reef break, so a 10-second period is solid, but it’s a bit inconsistent and crowds are sometimes an issue. With that offshore wind, it’ll be a proper session. The afternoon holds up with 5ft and cross-off winds, still clean. This is the best on offer, but it’s only a 2/10 quality rating, so don’t expect perfection.

That window fades fast. Tuesday 11 August morning goes glassy with a 3ft swell, but it’s weak and the energy is only 149 (moderate). The rest of the week backslides into poor, windy, small conditions.

So, bottom line: the next 10 days are a total loss. The one real chance is the morning of Monday 10 August. Mark it, but keep your expectations adjusted – the Boiler doesn’t often fire this time of year, and the forecast can shift. The water is weirdly warm, so don’t bother with a thick wetsuit.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 21°C on Tue afternoon, min 16°C on Mon morning). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Very mild (max 18°C on Sat afternoon, min 12°C on Thu night). Wind will be generally light.

Monday
27
Tuesday
28
Wednesday
29
Thursday
30
Friday
31
Saturday
1
Sunday
2
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
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)
1
W
6
0.9
WSW
6
0.8
WSW
6
0.7
W
6
0.5
W
5
0.4
WSW
5
0.4
WSW
5
0.5
W
5
0.2
W
10
0.9
W
6
0.9
WSW
6
0.7
W
5
0.6
W
5
0.6
W
6
0.4
W
4
0.2
W
10
0.5
W
5
0.3
WSW
8
0.3
WSW
8
0.3
WSW
8
0.3
WSW
8
Wave Graph
Metric surfscale
Energy kJ
81
70
45
32
14
8
8
12
8
52
52
22
20
22
6
8
14
13
13
13
13
Wind (km/h)
20
W
25
WSW
15
SW
15
SW
15
W
5
NW
10
WSW
20
W
10
W
20
W
30
W
15
NNW
10
NW
25
W
10
NNW
10
WNW
25
W
15
N
5
N
20
WSW
15
ENE
Wind State
cross
cross-on
cross-on
cross-on
cross
cross-off
cross-on
cross
cross
cross
cross
off
cross-off
cross
off
cross-off
cross
off
glassy
cross
cross-off
High Tide
6:06PM8.20m
6:27AM8.12m
6:47PM8.55m
7:06AM8.42m
7:24PM8.82m
7:42AM8.66m
7:59PM9.04m
8:16AM8.84m
8:33PM9.18m
8:49AM8.96m
9:07PM9.24m
9:22AM8.97m
9:40PM9.18m
Low Tide
11:49AM2.60m
00:10AM2.37m
12:31PM2.27m
00:51AM2.06m
1:08PM1.99m
1:28AM1.79m
1:43PM1.77m
2:03AM1.57m
2:15PM1.60m
2:37AM1.43m
2:47PM1.51m
3:09AM1.37m
3:18PM1.51m
3:41AM1.44m
clear
part cloud
part cloud
cloud
cloud
clear
clear
clear
part cloud
part cloud
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:31
5:31
5:33
5:35
5:37
5:37
5:39
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:12
9:10
9:08
9:07
9:06
9:05
9:02
 mm
Temp °C
17
18
18
19
21
19
19
19
17
17
17
16
16
17
15
17
18
16
19
22
19
Feels °C
14
15
17
18
20
20
19
17
16
12
12
12
11
11
11
12
13
12
16
19
16
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
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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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