
Surf Forecasts:
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 Type | Time (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 ForecastModerate 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 SummaryLight 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 | |
Swell Height Map | |||||||||||||||||||||
Wave Height (m) Direction Period (s) | WSW 10 | WSW 10 | WSW 9 | WSW 9 | WSW 8 | WSW 6 | W 7 | W 7 | WSW 8 | W 9 | WSW 10 | W 6 | W 6 | W 7 | W 7 | WSW 6 | WSW 6 | WSW 7 | WSW 8 | WSW 7 | WSW 7 |
Wave Graph | |||||||||||||||||||||
358 | 305 | 193 | 194 | 177 | 127 | 240 | 208 | 257 | 325 | 133 | 66 | 202 | 187 | 166 | 127 | 108 | 690 | 533 | 365 | 154 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | 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 | ||||||||
6:47 | — | — | 6:48 | — | — | 6:50 | — | — | 6:52 | — | — | 6:54 | — | — | 6:54 | — | — | 6:56 | — | — | |
— | 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 |
Swell 1 Height (m) Direction Period (s) | S 13 | SW 13 | S 13 | S 12 | SW 12 | WSW 9 | W 11 | — | WSW 8 | WSW 9 | WSW 10 | W 10 | W 10 | — | W 17 | W 14 | W 14 | W 12 | SW 16 | SW 16 | W 9 |
3 | 7 | 3 | 3 | 6 | 16 | 2 | — | 257 | 138 | 133 | 51 | 17 | — | 6 | 15 | 15 | 3 | 10 | 9 | 64 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | W 12 | — | — | — | — | — | — | — | — | W 17 | — | — | — | — | W 16 | WSW 15 |
— | — | — | — | — | 3 | — | — | — | — | — | — | — | — | 6 | — | — | — | — | 5 | 42 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | W 12 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 14 |
— | — | — | — | — | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 8 | |
Wind waves Height (m) Direction Period (s) | WSW 10 | WSW 10 | WSW 9 | WSW 9 | WSW 8 | WSW 6 | W 7 | W 7 | NW 4 | W 9 | W 6 | W 6 | W 6 | W 7 | W 7 | WSW 6 | WSW 6 | WSW 7 | WSW 8 | WSW 7 | WSW 7 |
358 | 305 | 193 | 194 | 177 | 127 | 240 | 208 | 16 | 325 | 62 | 66 | 202 | 187 | 166 | 127 | 108 | 690 | 533 | 365 | 154 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 29 | 29 | 29 | 127 | 127 | 127 | 437 | 362 | 158 | 29 | 326 | 365 | 362 | 362 | 29 | 138 | 325 | 607 | 325 | 325 | 266 |
Best forecast wave conditions in Wales - Gower | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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.











