Llangennith Surf Break

Lat Long: 51.59° N 4.30° W

Llangennith Surf Forecast and Surf Report

Issued: 12 am 13 Sep 2026 (local time)

Forecast update in  hr  min

Today's Llangennith sea temperature is
18.5°C
2.7° 

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


Llangennith surf forecast from 13 Sep 2026:

  • Most powerful swell: Saturday 19 Sep, 4AM (local time) - 8ft (2.5m), 8s period, WSW swell with 815 kJ wave energy.

Best Forecast Surf Conditions for Llangennith this week:

The most powerful waves expected at Llangennith in the next 16 days are 2.5m 8s and forecast to arrive on Saturday (Sep 19) at 4AM. Winds are predicted to be cross-onshore at the time the swell arrives.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 4AM (Sat 19th Sep)8ft (2.5m) 8s

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


The Lowdown

Alright, Rusty here, looking at the waves for our little stretch of coast. Let's be honest with you, it's a pretty grim outlook for the next two and a half weeks. We've got a long stretch of nothing to get excited about, but there might be a tiny glimmer right at the very end.

The problem is the wind. For day after day, we're looking at onshore and cross-onshore breezes, mostly moderate to fresh. That’s gonna chop things up and keep the quality way down. The swell sticks around, sometimes even getting solid, but the conditions just won't cooperate.

We've got a real blank run from the start right through to the 27th of September. That's almost two weeks where the surf just isn't worth paddling out for. The wind is relentless. For the first few days, we see a weak to moderate swell (combined energy around 361 to 197), but it's all on a WSW wind. The only spot we've got to talk about is Llangennith, and it's just not happening. The waves are there, but they'll be a mess.

Then, from around the 19th of September, the swell actually picks up. The energy climbs into the three-digit and even four-digit range, like on the 20th when the combined energy hits 1454. The swell's getting bigger, around 7ft to 12ft from the WSW, and the period is short. But the wind is howling from the W and SW at 19 to 25 mph, making it a cross-onshore mess. That's kite-surfing territory, not for a clean paddle.

That blank run stretches all the way to the end of the month, with the wind and swell just not lining up. It's a frustrating pattern, but it's one of those runs where you just have to be patient.

Now, here’s the one bit of hope. Look at the very last record, on the 28th of September, Monday morning. There's a whisper of a change. The wind goes light and offshore, from the ENE at only 3 mph. The swell is small, just 3ft from the W, but with a period of 9 seconds, it's got a bit more shape to it. The combined energy is only 117, so it's weak, but the description says "clean". That's the word we've been waiting for.

For Llangennith, this is the only real standout in the whole period, and it's a full two weeks out, so treat it as a promising but not certain bet. It's a beginner-friendly break, and with that offshore wind, it'll be glassy and clean. The waves will be small, but for a longboard or a funboard, it's the one session to try and get.

So, for the next two weeks, save your energy and your wax. The 28th of September at Llangennith is your best bet, but keep an eye on the forecasts as it gets closer. It's a long way off.

Rusty.

Short Range Forecast

Moderate rain (total 11mm), heaviest on Sat night. Very mild (max 19°C on Sun morning, min 16°C on Mon night). Mainly fresh winds.

Days 4-6 Weather Summary

Light rain (total 5mm), mostly falling on Wed night. Very mild (max 16°C on Tue night, min 13°C on Thu night). Mainly fresh winds.

Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
1
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)
1.4
WSW
10
1.3
WSW
10
1.1
WSW
9
1.1
WSW
9
1.1
WSW
8
1.4
WSW
6
1.6
W
7
1.5
W
7
1.4
WSW
8
1.4
W
9
0.8
WSW
10
1
W
6
1.6
W
6
1.4
W
7
1.3
W
7
1.2
WSW
6
1.3
WSW
6
2.5
WSW
7
2.1
WSW
8
1.8
WSW
7
1.3
WSW
7
Wave Graph
Metric surfscale
Energy kJ
358
305
193
194
177
127
240
208
257
325
133
66
202
187
166
127
108
690
533
365
154
Wind (km/h)
10
WSW
15
WSW
15
SW
20
SW
20
SW
30
SW
25
W
30
WNW
30
NW
20
NW
25
WNW
20
WSW
30
NW
30
WNW
25
WNW
25
WSW
35
SW
50
SW
35
W
40
W
25
W
Wind State
on
cross-on
cross-on
cross-on
cross-on
cross-on
on
on
cross-on
cross-on
cross-on
on
cross-on
on
cross-on
on
cross-on
cross-on
on
on
on
High Tide
8:16AM8.60m
8:33PM8.72m
8:50AM8.41m
9:07PM8.36m
9:23AM8.05m
9:41PM7.85m
9:57AM7.56m
10:15PM7.24m
10:31AM6.98m
10:52PM6.59m
11:11AM6.37m
11:36PM5.96m
12:03PM5.79m
00:42AM5.44m
Low Tide
2:20PM0.12m
2:39AM0.20m
2:53PM0.34m
3:10AM0.55m
3:25PM0.72m
3:41AM1.03m
3:58PM1.23m
4:14AM1.59m
4:33PM1.81m
4:50AM2.19m
5:15PM2.43m
5:38AM2.77m
6:18PM2.98m
rain showers
cloud
cloud
clear
cloud
light rain
clear
clear
part cloud
cloud
part cloud
light rain
rain showers
part cloud
part cloud
part cloud
cloud
heavy rain
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:47
6:48
6:50
6:52
6:54
6:54
6:56
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:37
7:35
7:32
7:30
7:28
7:25
7:22
 mm
2
2
4
1
14
Temp °C
19
18
18
18
19
19
17
16
16
15
15
16
15
15
15
16
16
17
16
16
15
Feels °C
19
18
18
16
17
16
12
10
12
10
9
12
10
9
11
11
10
9
8
8
9
  • 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
How to use the Wavefinder 

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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 Llangennith 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 Llangennith Surf forecast

The above surf forecast table for Llangennith provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Llangennith can be found by selecting the local surf guide option on the grey menu. Our Llangennith 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 (Llangennith) 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 Llangennith 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.

Llangennith is 24 km (15 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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