The Boiler Surf Break

Lat Long: 51.56° N 4.02° W

The Boiler Surf Forecast and Surf Report

Issued: 6 am 25 Jul 2026 (local time)

Forecast update in  hr  min

Today's The Boiler sea temperature is
20.4° 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 25 Jul 2026:

  • Best quality surf: Sunday 26 Jul, 10PM (local time) - 4.5ft (1.3m), 7s period, W swell with cross-offshore winds.
  • Most powerful swell: Sunday 26 Jul, 4PM (local time) - 4.5ft (1.4m), 7s period, W swell with 192 kJ wave energy.
  • Next surfable swell (1★+): Sunday 26 Jul, 10PM (local time) - 4.5ft (1.3m), 7s 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 Sunday (Jul 26) at 10PM. The primary swell is predicted to be 1.3m and 7s period. 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 1.4m 7s and forecast to arrive on Sunday (Jul 26) at 4PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 4s period and expected on Friday (Jul 31) at 10PM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+)10PM (Sun 26th Jul)4.5ft (1.3m) 7s
Best Surf10PM (Sun 26th Jul)4.5ft (1.3m) 7s
Most Powerful 4PM (Sun 26th Jul)4.5ft (1.4m) 7s

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


The Lowdown

Alright folks, Rusty here. Let’s be straight with you – this 16-day stretch for The Boiler is a real tough one. We’ve got a massive gap of nothing but tiny, poor surf stretching from now all the way through to the start of August. The first few days are a write-off, with wave heights barely scraping 1 ft to 5 ft and cross-shore winds chopping everything up. The combined energy is pathetically low, often in the single digits (4 to 192). The water is a balmy 69°, which is a whopping 8° warmer than usual for this time of year – that’s very unusual, like swimming in a warm bath, but it won’t make up for the lack of waves. You’re looking at a solid week and a half of flat, grovelly conditions.

Saturday the 25th kicks off with a 1 ft W windswell and a 4-second period, blown out by a 12 mph cross-off wind. The afternoon is worse. Sunday the 26th brings a slight bump to 4 ft but with a 16 mph cross-off, it’s still messy. This pattern repeats day after day – tiny swell, bad wind. Monday the 27th has a 3 ft swell (68 combined energy), but it’s still cross-shore and weak. The 28th and 29th are even smaller, with barely a ripple. Thursday the 30th offers a 3 ft swell (45 combined energy), but again, cross-shore winds ruin it.

Finally, we get a glimmer on Friday the 31st. The morning glass off with a 2 ft W swell (33 combined energy) is the best we’ll see for a while – clean, but still tiny. The afternoon goes back to junk. Saturday the 1st of August has a 0.7 ft swell but with a 6 mph offshore wind, it’s clean but laughably small. Sunday the 2nd is the same story.

Now, here’s the one true standout, and it’s a week and a half away. Tuesday the 4th of August, morning. The Boiler will see a 3 ft SW swell with a 8-second period. The combined energy finally hits triple digits at 104 (moderate wave energy). The wind is a clean 12 mph offshore from the N, and the report says “surfable waves but very ordinary conditions.” For a break that’s generally inconsistent, this is the only window where you might get a few ridable, clean waves. The swell direction (SW) is right on the optimum for this spot. It’s not big, but after this long flat spell, it’s the best we’ve got. The afternoon is smaller and cleaner but weaker.

After that, it’s back to tiny, weak swells with cross-off or cross-shore winds through the 5th, 6th, 7th, 8th, and 9th. Nothing else worth paddling for. The crowds at The Boiler are described as “sometimes,” so if you do head out on the 4th, you might have a few others with the same idea.

This is a rough run, folks. The only real shot at anything is that Tuesday morning. Keep your expectations in the gutter.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 19°C on Sat morning, min 13°C on Sun night). Winds decreasing (fresh winds from the W on Sun afternoon, light winds from the WSW by Mon night).

Days 4-6 Weather Summary

Some drizzle, heaviest during Tue afternoon. Warm (max 25°C on Wed afternoon, min 17°C on Wed night). Wind will be generally light.

Saturday
25
Sunday
26
Monday
27
Tuesday
28
Wednesday
29
Thursday
30
Friday
31
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)
0.3
W
4
0.9
W
4
0.9
W
6
1.3
W
7
1.4
W
7
1.1
W
7
0.9
W
6
0.8
WSW
6
0.7
W
6
0.6
W
6
0.5
W
5
0.3
WSW
5
0.1
W
11
0.3
WSW
5
0.2
W
10
0.4
W
7
0.8
W
5
0.5
W
5
0.7
W
6
0.5
W
5
0.1
W
8
Wave Graph
Metric surfscale
Energy kJ
3
30
66
157
192
107
68
51
32
23
13
5
2
5
8
14
37
12
33
13
1
Wind (km/h)
20
W
30
W
20
WSW
25
WNW
35
W
15
NW
15
W
25
WSW
10
WSW
5
SSW
10
SW
5
NNE
5
SSE
20
W
10
NW
5
WSW
20
WSW
15
N
5
NE
15
WSW
15
NE
Wind State
cross-off
cross
cross
cross-off
cross
cross-off
cross
cross
cross-on
on
cross-on
glassy
cross-on
cross
cross-off
cross-on
cross
off
glassy
cross-on
cross-off
High Tide
4:18PM7.38m
4:45AM7.40m
5:18PM7.78m
5:41AM7.77m
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
Low Tide
10:24PM3.08m
10:57AM2.97m
11:22PM2.74m
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
clear
clear
part cloud
part cloud
clear
clear
clear
clear
part cloud
part cloud
rain showers
clear
part cloud
clear
clear
part cloud
part cloud
cloud
part cloud
cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:28
5:28
5:31
5:31
5:33
5:35
5:37
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:15
9:14
9:12
9:10
9:08
9:07
9:06
 mm
1
Temp °C
19
18
17
19
19
18
17
18
18
21
24
22
24
25
20
21
25
20
23
25
20
Feels °C
14
13
15
13
13
15
13
14
18
22
23
23
22
21
18
20
23
17
22
23
17
  • 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)
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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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