Surf Forecasts:
Llangennith surf forecast from 13 Aug 2026:
- Most powerful swell: Wednesday 19 Aug, 10AM (local time) - 6ft (1.8m), 7s period, W swell with 302 kJ wave energy.
Best Forecast Surf Conditions for Llangennith this week:
The most powerful waves expected at Llangennith in the next 16 days are 1.8m 7s and forecast to arrive on Wednesday (Aug 19) at 10AM. 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 | 10AM (Wed 19th Aug) | 6ft (1.8m) 7s |
Table - best surf conditions forecast for Llangennith over the next 16 days.
The Lowdown
Alright, let’s break it down for the next couple of weeks at Llangennith.
Honestly, it’s a slow start. The first week is pretty tough for a surfer, with waves staying small and the wind not doing us any favours. Things only start to look up towards the tail end of the second week.
We open on Thursday morning the 13th with glassy conditions. The water is 68°, which is a full 6° warmer than what’s normal for August – that’s really unusual, a proper warm spell. There’s a weak 3ft swell from the WSW at 10 seconds, and the total energy is a modest 184. It’s surfable, but it’s ordinary. That’s about the best we see for a while, as the afternoon gets blown out and the next few days are tiny. Saturday the 15th has a 2ft cross-shore mess, and Sunday the 16th is clean but ankle-knocker small with a 1ft swell. The whole first week is a non-starter for any real surfing.
Now, into the second week we’ve got a standout on the horizon, but it’s a long-range call so don’t book the time off just yet. Thursday the 27th of August, the afternoon session is the pick of the bunch. You’ve got a 5ft swell from the SW, a short 7-second period so it’s a bit of a windswell, and the combined energy cranks up to 257 – that’s a moderate-to-strong push. The wind is clean from the NE at 16 mph, a nice cross-offshore breeze that’ll keep the faces smooth. That’s the one to watch over the whole 16-day window. Remember, it’s a beach break, and that short period might make it a little lumpy, but the clean wind makes it worth the wait for the guys with a bit of experience. Crowds can show up sometimes, so don’t expect to have it to yourself.
The days just before, like Sunday the 23rd and Monday the 24th, have a few clean sessions with 3ft to 4ft swells and cross-off winds, giving you "surfable but very ordinary" conditions. Good for a paddling session, but nothing special.
So, here's the game plan: sit out the first week, it’s flat and messy. Aim for Thursday the 27th afternoon – clean, 5ft, and that north-easterly wind making things look tidy. A bit of a wait, but could be a cracker.
Rusty.
Short Range ForecastMostly dry. Warm (max 24°C on Thu afternoon, min 12°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Mon night. Warm (max 21°C on Mon afternoon, min 15°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 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 10 | WSW 9 | WSW 9 | WSW 8 | WSW 7 | W 7 | W 8 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | W 8 | WSW 7 | WSW 6 | WSW 7 | W 7 | W 7 | W 7 | W 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 184 | 173 | 123 | 84 | 80 | 68 | 43 | 40 | 29 | 18 | 18 | 10 | 9 | 12 | 49 | 160 | 180 | 278 | 302 | 278 | 152 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | on | cross-on | on | on | cross | cross | cross-on | cross | cross-off | cross-on | cross-on | glassy | on | on | on | on | cross-on | cross-on | on | on |
High Tide | 7:41PM8.80m | 8:04AM8.54m | 8:23PM8.94m | 8:44AM8.55m | 9:02PM8.81m | 9:22AM8.35m | 9:40PM8.46m | 9:59AM7.98m | 10:17PM7.94m | 10:35AM7.48m | 10:54PM7.30m | 11:13AM6.91m | 11:35PM6.64m | ||||||||
Low Tide | 1:30PM0.31m | 1:56AM0.05m | 2:10PM0.12m | 2:35AM0.00m | 2:49PM0.14m | 3:12AM0.17m | 3:25PM0.37m | 3:48AM0.53m | 4:02PM0.76m | 4:23AM1.02m | 4:38PM1.28m | 4:59AM1.59m | 5:17PM1.85m | ||||||||
 | |  |  | | | | | |  | |  | | |  | |  | | | | | |
 | 5:58 | — | — | 5:58 | — | — | 6:01 | — | — | 6:03 | — | — | 6:03 | — | — | 6:05 | — | — | 6:07 | — | — |
 | — | 8:44 | — | — | 8:43 | — | — | 8:40 | — | — | 8:38 | — | — | 8:37 | — | — | 8:35 | — | — | 8:31 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | 1 | — | — | — | — |
Temp °C | 23 | 24 | 20 | 20 | 21 | 17 | 18 | 18 | 14 | 18 | 18 | 16 | 19 | 21 | 18 | 19 | 20 | 18 | 17 | 17 | 16 |
Feels °C | 20 | 22 | 20 | 19 | 20 | 15 | 14 | 13 | 10 | 16 | 14 | 13 | 19 | 17 | 16 | 17 | 17 | 16 | 14 | 12 | 12 |
Swell 1 Height (m) Direction Period (s) | WSW 10 | WSW 10 | WSW 10 | WSW 9 | — | WSW 8 | WSW 7 | W 7 | W 8 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | W 8 | — | SW 16 | SW 17 | SW 17 | SW 16 | SW 16 | W 7 |
| kJ | 184 | 173 | 123 | 84 | — | 68 | 43 | 40 | 29 | 18 | 18 | 10 | 9 | 10 | — | 11 | 11 | 12 | 10 | 10 | 152 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | W 10 | — | — | — | — | W 5 | W 4 | SW 18 | — | — | — | — | — | — | W 9 |
| kJ | — | — | — | — | — | — | 2 | — | — | — | — | 2 | 1 | 12 | — | — | — | — | — | — | 6 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | SW 10 | — | — | — | — | — | W 18 | — | — | — | — | — | — | — | SW 16 |
| kJ | — | — | — | — | — | — | 4 | — | — | — | — | — | 6 | — | — | — | — | — | — | — | 10 |
Wind waves Height (m) Direction Period (s) | — | W 2 | W 3 | — | WSW 9 | NNW 3 | N 4 | NNW 4 | N 4 | N 3 | — | — | — | WSW 4 | WSW 7 | WSW 6 | WSW 7 | W 7 | W 7 | W 7 | — |
| kJ | — | 2 | 1 | — | 80 | 7 | 10 | 11 | 10 | 1 | — | — | — | 6 | 49 | 160 | 180 | 278 | 302 | 278 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 361 | 4 | 4 | 362 | 20 | 396 | 399 | 184 | 128 | 377 | 421 | 436 | 400 | 415 | 405 | 43 | 4 | 362 | 362 | 469 |
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.
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