Surf Forecasts:
Llangennith surf forecast from 19 Aug 2026:
- Best quality surf: Thursday 27 Aug, 1AM (local time) - 6.5ft (2.0m), 7s period, W swell with cross-offshore winds.
- Most powerful swell: Wednesday 26 Aug, 10PM (local time) - 8ft (2.5m), 7s period, W swell with 636 kJ wave energy.
- Next surfable swell (1★+): Saturday 22 Aug, 4AM (local time) - 1.5ft (0.4m), 8s period with WSW 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 22) at 4AM. The primary swell is predicted to be 0.4m and 8s period with a secondary swell of 0.1m and 13s. 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 7s and forecast to arrive on Wednesday (Aug 26) at 10PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 5s period and expected on Tuesday (Aug 25) at 4AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Sat 22nd Aug) | 1.5ft (0.4m) 8s |
| Best Surf | 1AM (Thu 27th Aug) | 6.5ft (2.0m) 7s |
| Most Powerful | 10PM (Wed 26th Aug) | 8ft (2.5m) 7s |
Table - best surf conditions forecast for Llangennith over the next 16 days.
The Lowdown
Alright folks, Rusty here. We’ve got a tricky 16-day stretch ahead for Llangennith. Let’s be real – this isn’t one for the highlight reel. The water is sitting at 69°F which is a good 8°F warmer than usual for this time of year, so that’s a weird one—definitely not your typical August feel.
The first few days are a write-off. Wednesday the 19th and Thursday the 20th bring onshore wind and poor surf conditions, with small swell (3ft to 5ft from the WSW) and weak energy (60 to 569). Friday the 21st through Monday the 24th is mostly flat or tiny—0.3ft to 2ft—with the odd glassy moment on Monday afternoon, but nowhere near enough to paddle for. Tuesday the 25th is flat too, with a bit of clean but no swell.
Then we get a little glimmer late in the month. On Wednesday the 26th, there’s a glassy morning with 4ft WSW swell at 8 seconds. The energy is moderate (169) but the wind is glassy—that’s a rare treat. The surf is very ordinary, but it’s the cleanest you’ll see. That afternoon the wind swings onshore and the swell bumps to 5ft, but it’s lumpy.
After that, it’s a mixed bag of cross-shore and onshore junk through the end of August and into early September. The standout moment comes on Monday the 31st of August afternoon: 6ft of WSW swell, 10-second period, and strong energy (627). But the wind is onshore and fresh, so it’s a messy, choppy mess. Still, for the experienced surfer, that’s the biggest wave of the window. Not clean, but it’s something.
The first week of September looks scrappy again. Tuesday the 1st and Wednesday the 2nd offer small windows of cleaner conditions—Wednesday morning has light cross-shore wind and 5ft W swell (283 energy)—but it’s marginal. Thursday the 3rd fades back to small and onshore.
So the honest truth? There’s no true standout. Focus on Wednesday the 26th morning for the glassy, clean 4ft WSW swell if you’re desperate for a paddle. Otherwise, Monday the 31st afternoon has the size but the wind will chop it up. Don’t expect much else.
Rusty.
Short Range ForecastLight rain (total 8mm), mostly falling on Wed night. Very mild (max 18°C on Wed afternoon, min 13°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 24°C on Mon afternoon, min 13°C on Sat night). Winds increasing (calm on Sun morning, fresh winds from the E by Mon night). | |||||||||||||||||||
Wed 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | ||||||||||||||
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 5 | WSW 7 | W 7 | WSW 7 | WSW 9 | WSW 8 | WSW 8 | WSW 8 | WSW 10 | W 10 | WSW 9 | WSW 9 | W 9 | WSW 10 | WSW 9 | WSW 8 | SW 13 | SW 13 | SW 13 | SSW 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 66 | 327 | 311 | 181 | 106 | 54 | 22 | 24 | 18 | 28 | 16 | 15 | 8 | 9 | 8 | 7 | 7 | 7 | 7 | 6 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | cross-on | cross | cross | cross-on | cross-off | cross-off | cross-on | cross-off | off | on | off | off | off | off | off | cross-off | cross-off |
High Tide | 11:35PM6.64m | 11:56AM6.32m | 00:23AM6.02m | 12:52PM5.80m | 1:31AM5.54m | 2:16PM5.50m | 3:07AM5.42m | 3:51PM5.63m | 4:30AM5.72m | 4:59PM6.09m | 5:25AM6.23m | 5:45PM6.67m | ||||||||
Low Tide | 5:17PM1.85m | 5:39AM2.19m | 6:04PM2.43m | 6:31AM2.73m | 7:09PM2.91m | 7:50AM3.10m | 8:44PM3.11m | 9:29AM3.09m | 10:16PM2.89m | 10:45AM2.71m | 11:17PM2.42m | 11:36AM2.19m | 00:01AM1.88m | |||||||
 |  |  | | |  | |  | | | | | | | | |  | | | | |
 | — | — | 6:09 | — | — | 6:09 | — | — | 6:11 | — | — | 6:13 | — | — | 6:15 | — | — | 6:16 | — | — |
 | 8:31 | — | — | 8:30 | — | — | 8:28 | — | — | 8:25 | — | — | 8:23 | — | — | 8:22 | — | — | 8:20 | — |
mm | — | 3 | 2 | 2 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | 18 |
Temp °C | 18 | 17 | 17 | 18 | 15 | 16 | 17 | 15 | 16 | 18 | 15 | 17 | 20 | 19 | 22 | 24 | 20 | 21 | 22 | 18 |
Feels °C | 13 | 13 | 12 | 13 | 10 | 13 | 13 | 12 | 14 | 15 | 11 | 15 | 17 | 15 | 17 | 19 | 14 | 15 | 19 | 17 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 16 | WSW 7 | WSW 7 | WSW 9 | WSW 8 | WSW 8 | WSW 8 | WSW 10 | W 10 | WSW 9 | WSW 9 | W 9 | WSW 10 | WSW 9 | WSW 8 | SW 13 | SW 13 | SW 8 | SSW 8 |
| kJ | 10 | 10 | 292 | 181 | 106 | 54 | 22 | 24 | 18 | 28 | 16 | 15 | 6 | 9 | 7 | 7 | 7 | 7 | 3 | 6 |
Swell 2 Height (m) Direction Period (s) | — | SW 16 | SW 15 | SW 14 | SW 14 | SW 13 | SW 13 | W 4 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | W 9 | W 8 | SW 13 | SW 4 |
| kJ | — | 10 | 8 | 8 | 8 | 7 | 7 | 1 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 7 | 1 | 1 | 7 | 1 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | SW 16 | SW 16 | SW 13 | — | SW 12 | — | — | — | W 8 | W 9 | W 9 | SW 8 | SW 8 | W 8 | W 8 |
| kJ | — | — | — | — | — | 11 | 10 | 7 | — | 6 | — | — | — | 5 | 2 | 2 | 3 | 3 | 1 | 1 |
Wind waves Height (m) Direction Period (s) | WSW 5 | WSW 7 | W 7 | NW 4 | NNW 4 | NNW 4 | W 6 | NNE 3 | N 3 | NNW 3 | N 3 | — | — | NE 3 | ESE 4 | E 4 | ESE 4 | E 4 | ESE 4 | SE 4 |
| kJ | 66 | 327 | 311 | 11 | 15 | 11 | 18 | 3 | 2 | 1 | 1 | — | — | 2 | 15 | 9 | 30 | 41 | 13 | 10 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 325 | 654 | 29 | 325 | 9 | 4 | 265 | 7 | 51 | 194 | 53 | 53 | 183 | 53 | 375 | 323 | 375 | 375 | 325 | 156 |
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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