Surf Forecasts:
Llangennith surf forecast from 29 Aug 2026:
- Best quality surf: Saturday 29 Aug, 1PM (local time) - 4ft (1.2m), 7s period, SW swell with cross-offshore winds.
- Most powerful swell: Monday 31 Aug, 7AM (local time) - 8ft (2.5m), 9s period, WSW swell with 1,041 kJ wave energy.
- Next surfable swell (1★+): Saturday 29 Aug, 1PM (local time) - 4ft (1.2m), 7s period with SW swell.
Best Forecast Surf Conditions for Llangennith this week:
The surf forecast for Llangennith over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Aug 29) at 1PM. The primary swell is predicted to be 1.2m and 7s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Llangennith in the next 16 days are 2.5m 9s and forecast to arrive on Monday (Aug 31) at 7AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Saturday (Aug 29) at 7AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1PM (Sat 29th Aug) | 4ft (1.2m) 7s |
| Best Surf | 1PM (Sat 29th Aug) | 4ft (1.2m) 7s |
| Most Powerful | 7AM (Mon 31st Aug) | 8ft (2.5m) 9s |
Table - best surf conditions forecast for Llangennith over the next 16 days.
The Lowdown
Alright, let’s break down the next couple of weeks for Llangennith. I’m not gonna sugarcoat it – it’s a long, slow stretch of poor surf ahead. Nothing to get excited about for a while.
Water temps are about 68°, which is much warmer than usual for this time of year, so at least you’re not freezing while you wait.
Starting off Friday the 28th of August, it’s a cross-on wind at 15 mph, a weak 4ft swell from the SW with a short 6-second period, and it’s raining and choppy. No good.
Saturday the 29th has a cleaner morning with a cross-off wind, but the swell is small and weak (90 units of combined energy), and still poor. The afternoon turns into a cross-on mess again.
Sunday the 30th brings stronger wind and lumpy cross-shore chop. The swell gets a little bigger, but quality is still poor.
Monday the 31st has cross-onshore winds and a 7ft swell. The afternoon goes offshore, but it’s still rated poor.
Tuesday 1st and Wednesday 2nd of September are a total loss with strong, messy onshores and weak, short-period swell.
The rest of the week through Friday is more of the same poor conditions.
Then on Saturday the 5th of September morning, we get a tiny marginal window: a light onshore breeze and a 4ft WSW swell with 143 units of energy. It’s a possibility, but nothing special.
Monday the 7th of September morning shows a 6ft SSW swell with 305 units of energy and a light cross-on wind, still only marginal.
Now, Tuesday the 8th of September is the big one. The morning brings a massive 16ft WSW groundswell with an 11-second period and a huge 5848 units of combined energy. But the wind is a fresh onshore 22 mph. That’s powerful, heavy, and messy – experts only. The afternoon drops to 13ft but with the same onshore wind.
After that, it drops back to smaller, poor-to-marginal surf all the way through the 12th.
So the one and only standout in this whole 16-day window is that Tuesday the 8th of September. It’s a serious amount of swell with a lot of energy. The onshore wind is a problem, so it won’t be clean, but if you’re an experienced surfer looking for a raw, powerful day, that’s your only shot.
Rusty
Short Range ForecastHeavy rain (total 34mm), heaviest during Sun night. Very mild (max 18°C on Fri afternoon, min 15°C on Sun night). Winds increasing (light winds from the SE on Sat morning, fresh winds from the SSW by Sun afternoon). | Days 5-7 Weather SummaryModerate rain (total 11mm), heaviest on Wed morning. Very mild (max 18°C on Tue afternoon, min 15°C on Wed night). Winds increasing (light winds from the W on Mon night, strong winds from the SSW by Wed morning). | |||||||||||||||||||
Fri 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | ||||||||||||||
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) | SW 6 | SW 6 | SW 6 | SW 8 | WSW 9 | WSW 9 | SW 8 | WSW 8 | WSW 9 | WSW 9 | W 10 | WSW 6 | WSW 6 | WSW 6 | WSW 6 | SW 6 | WSW 7 | WSW 8 | WSW 8 | WSW 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 108 | 109 | 90 | 216 | 530 | 354 | 435 | 650 | 673 | 466 | 361 | 80 | 59 | 83 | 74 | 307 | 456 | 276 | 214 | 196 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-off | cross-on | on | cross | cross | on | cross-on | on | on | on | on | cross-on | cross-on | cross-on | on | on | on | on |
High Tide | 7:31PM8.20m | 7:48AM8.10m | 8:03PM8.47m | 8:20AM8.30m | 8:36PM8.58m | 8:54AM8.35m | 9:11PM8.50m | 9:30AM8.21m | 9:48PM8.23m | 10:08AM7.90m | 10:28PM7.78m | 10:51AM7.44m | 11:16PM7.20m | |||||||
Low Tide | 1:41AM0.55m | 1:52PM0.48m | 2:11AM0.34m | 2:22PM0.33m | 2:42AM0.28m | 2:54PM0.34m | 3:14AM0.38m | 3:28PM0.51m | 3:49AM0.66m | 4:06PM0.85m | 4:28AM1.10m | 4:49PM1.33m | ||||||||
 |  |  |  | | |  |  |  | |  | | | | | | | | |  | |
 | — | — | 6:22 | — | — | 6:24 | — | — | 6:26 | — | — | 6:28 | — | — | 6:30 | — | — | 6:31 | — | — |
 | 8:13 | — | — | 8:10 | — | — | 8:08 | — | — | 8:07 | — | — | 8:04 | — | — | 8:01 | — | — | 8:00 | — |
mm | 1 | 6 | 10 | — | 2 | 3 | 5 | 7 | — | — | — | 1 | 1 | 2 | 4 | 1 | 1 | 1 | 1 | — |
Temp °C | 18 | 17 | 18 | 18 | 17 | 18 | 17 | 16 | 15 | 16 | 16 | 17 | 18 | 17 | 18 | 18 | 18 | 17 | 17 | 17 |
Feels °C | 15 | 14 | 14 | 17 | 15 | 14 | 11 | 14 | 11 | 12 | 14 | 14 | 14 | 15 | 12 | 13 | 13 | 11 | 10 | 12 |
Swell 1 Height (m) Direction Period (s) | — | SW 11 | SW 6 | SW 8 | WSW 9 | WSW 9 | — | — | WSW 9 | WSW 9 | W 10 | — | SW 18 | SW 16 | SW 16 | — | SW 15 | SW 15 | SW 15 | SW 15 |
| kJ | — | 5 | 90 | 216 | 530 | 354 | — | — | 673 | 466 | 361 | — | 12 | 10 | 10 | — | 9 | 8 | 9 | 9 |
Swell 2 Height (m) Direction Period (s) | — | — | SE 4 | — | — | — | — | — | — | — | — | — | — | SW 16 | — | — | — | — | — | SW 15 |
| kJ | — | — | 12 | — | — | — | — | — | — | — | — | — | — | 10 | — | — | — | — | — | 9 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SW 6 | SW 6 | — | — | — | — | SW 8 | WSW 8 | — | — | WSW 10 | WSW 6 | WSW 6 | WSW 6 | WSW 6 | SW 6 | WSW 7 | WSW 8 | WSW 8 | WSW 8 |
| kJ | 108 | 109 | — | — | — | — | 435 | 650 | — | — | 289 | 80 | 59 | 83 | 74 | 307 | 456 | 276 | 214 | 196 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 289 | 400 | 400 | 29 | 138 | 67 | 67 | 30 | 12 | 29 | 4 | 142 | 314 | 127 | 415 | 772 | 258 | 900 | 362 | 258 |
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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