
Surf Forecasts:
Mewslade Bay surf forecast from 6 Aug 2026:
- Most powerful swell: Thursday 13 Aug, 1AM (local time) - 3ft (0.9m), 9s period, WSW swell with 137 kJ wave energy.
Best Forecast Surf Conditions for Mewslade Bay this week:
The most powerful waves expected at Mewslade Bay in the next 16 days are 0.9m 9s and forecast to arrive on Thursday (Aug 13) at 1AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Tuesday (Aug 11) at 10AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 1AM (Thu 13th Aug) | 3ft (0.9m) 9s |
Table - best surf conditions forecast for Mewslade Bay over the next 16 days.
The Lowdown
Alright, let's have a look at what's coming up for Mewslade Bay over the next couple of weeks. I gotta be straight with you, it's a tough run. There’s nothing worth paddling out for at the start, and we’re looking at a long gap before things get even remotely interesting.
Right now, and for the first several days, the surf is basically flat or blown out. We’ve got a bit of swell showing on Wednesday the 5th with waves around 5ft from the WSW, but the wind is a cross-on 19 mph, making it lumpy and poor. That combined swell energy is moderate at 226, but it doesn't matter with that wind. Water temp is sitting at 68°, which is a whopping 7° warmer than usual for this time of year – that's very unusual, like you’re in a bath.
From Thursday the 6th right through to Friday the 14th, we see tiny, weak swells. Most readings show wave heights between 0.3ft and 3ft, with energy readings under 100 (weak). The wind is mostly cross-shore or cross-onshore, keeping the surface chopped and messy. There’s a glimmer of hope on Friday morning the 14th of August – we get a glassy window with 2ft swell from the WSW and a 9-second period. The wave comment even says "surfable waves but very ordinary conditions," and the energy is a weak 79. It’s still the best on offer, but honestly, with the combined energy being that low, it’s barely a paddle. That whole stretch from now until then is a real quiet period.
Then things change, but not necessarily for the better for us normal surfers. By Sunday afternoon the 16th, we see a bump in energy, and it really picks up on Monday the 17th and Tuesday the 18th. On Monday morning the 17th, energy jumps to a strong 232 with a 3ft swell, but it's from the WSW and cross-on wind. By the afternoon, we get 5ft from the WSW with a solid 10-second period, and energy is up at 388. On Tuesday the 18th, we have 4ft and 4ft waves, with energy in the 233-235 range (strong). But here's the kicker – the wind is howling at 22 to 25 mph, cross-shore and creating a messy, lumpy cross-chop. That kind of setup, with that much wind and a beach break, honestly looks more interesting for kite surfing than paddle surfing.
So, the standout, if you can even call it that, is the small, glassy window on the morning of Friday the 14th. It’s the only time we get clean conditions. This break is a tide-dependent, exposed spot that’s fairly consistent, but for this forecast, it’s mostly a miss. If you’re desperate, that Friday morning is your only chance for a ride, but keep expectations low. Long-range stuff on the 17th and 18th (next week) has more size but is too windy.
Rusty.
Short Range ForecastMostly dry. Very mild (max 17°C on Wed afternoon, min 13°C on Wed night). Winds decreasing (fresh winds from the W on Wed afternoon, calm by Thu night). | Days 5-7 Weather SummaryMostly dry. Warm (max 24°C on Mon afternoon, min 17°C on Sat night). Wind will be generally light. | |||||||||||||||||||
Wed 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | ||||||||||||||
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 7 | W 6 | W 6 | WSW 6 | WSW 5 | W 9 | WSW 5 | W 9 | W 9 | WSW 8 | WSW 7 | WSW 7 | WSW 6 | SW 6 | SW 7 | SW 6 | WSW 6 | W 8 | W 9 | WSW 11 |
Wave Graph | ||||||||||||||||||||
219 | 106 | 78 | 43 | 9 | 7 | 7 | 6 | 3 | 13 | 27 | 17 | 15 | 5 | 7 | 10 | 4 | 5 | 7 | 12 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-off | cross | cross-on | cross-off | on | cross-on | glassy | cross-on | cross | cross-off | cross-off | cross | cross-off | cross | cross-on | cross-off | cross-on | cross | glassy |
High Tide | 11:41PM7.22m | 12:09PM6.87m | 00:38AM6.78m | 1:13PM6.52m | 1:52AM6.45m | 2:35PM6.38m | 3:19AM6.43m | 3:59PM6.64m | 4:38AM6.79m | 5:10PM7.20m | 5:42AM7.35m | 6:08PM7.85m | ||||||||
Low Tide | 5:17PM1.45m | 5:45AM1.61m | 6:11PM1.84m | 6:46AM2.01m | 7:22PM2.17m | 8:06AM2.27m | 8:52PM2.25m | 9:36AM2.19m | 10:20PM1.94m | 10:54AM1.77m | 11:30PM1.39m | 11:55AM1.22m | 00:26AM0.80m | |||||||
— | — | 5:47 | — | — | 5:48 | — | — | 5:50 | — | — | 5:52 | — | — | 5:52 | — | — | 5:54 | — | — | |
8:59 | — | — | 8:57 | — | — | 8:55 | — | — | 8:53 | — | — | 8:52 | — | — | 8:50 | — | — | 8:47 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 17 | 17 | 16 | 16 | 15 | 16 | 16 | 16 | 16 | 19 | 18 | 20 | 23 | 19 | 21 | 24 | 21 | 21 | 22 | 21 |
Feels °C | 11 | 12 | 12 | 11 | 12 | 14 | 13 | 15 | 14 | 16 | 16 | 16 | 19 | 17 | 20 | 22 | 20 | 20 | 19 | 20 |
Swell 1 Height (m) Direction Period (s) | SW 13 | W 11 | W 6 | W 10 | WSW 5 | WSW 5 | W 9 | W 4 | W 3 | WSW 8 | WSW 7 | WSW 7 | W 8 | SW 6 | SW 7 | SW 6 | WSW 6 | WSW 6 | ESE 3 | WSW 11 |
7 | 2 | 78 | 8 | 9 | 2 | 6 | 3 | 1 | 13 | 27 | 17 | 1 | 5 | 7 | 10 | 4 | 4 | 2 | 12 | |
Swell 2 Height (m) Direction Period (s) | — | SW 13 | W 10 | SW 12 | W 10 | W 9 | SW 12 | W 9 | W 9 | W 13 | — | SW 12 | SW 12 | W 8 | W 4 | W 8 | W 5 | W 8 | WSW 6 | SSW 6 |
— | 7 | 2 | 6 | 7 | 7 | 6 | 6 | 1 | 3 | — | 6 | 6 | 1 | 1 | 1 | 2 | 5 | 4 | 4 | |
Swell 3 Height (m) Direction Period (s) | — | — | SW 13 | — | SW 12 | SW 12 | — | SW 12 | SW 9 | — | — | W 8 | — | — | W 8 | W 11 | W 8 | W 10 | W 9 | W 8 |
— | — | 7 | — | 6 | 6 | — | 5 | 3 | — | — | 1 | — | — | 1 | 2 | 1 | 2 | 7 | 5 | |
Wind waves Height (m) Direction Period (s) | WSW 7 | W 6 | — | WSW 6 | — | — | WSW 5 | — | — | — | — | — | WSW 6 | WNW 3 | — | W 5 | NNW 3 | ESE 3 | — | — |
219 | 106 | — | 43 | — | — | 7 | — | — | — | — | — | 15 | 2 | — | 2 | 2 | 2 | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 358 | 358 | 195 | 424 | 326 | 367 | 381 | 378 | 191 | 191 | 54 | 180 | 195 | 195 | 377 | 181 | 180 | 185 | 288 | 54 |
Best forecast wave conditions in Wales - Gower | ||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||
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Information about the Mewslade Bay Surf forecast
The above surf forecast table for Mewslade Bay provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Mewslade Bay can be found by selecting the local surf guide option on the grey menu. Our Mewslade Bay 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 (Mewslade Bay) 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 Mewslade Bay 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.
Mewslade Bay is 25 km (16 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.











