
Surf Forecasts:
Mewslade Bay surf forecast from 6 Aug 2026:
- Best quality surf: Wednesday 12 Aug, 7AM (local time) - 1.5ft (0.5m), 11s period, WSW swell with glassy winds.
- Most powerful swell: Wednesday 12 Aug, 10PM (local time) - 3ft (0.9m), 9s period, WSW swell with 146 kJ wave energy.
- Next surfable swell (1★+): Wednesday 12 Aug, 7AM (local time) - 1.5ft (0.5m), 11s period with WSW swell.
Best Forecast Surf Conditions for Mewslade Bay this week:
The surf forecast for Mewslade Bay over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 12) at 7AM. The primary swell is predicted to be 0.5m and 11s period with a secondary swell of 0.2m and 7s. Another secondary swell of 0.2m and 6s is also forecast. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Mewslade Bay in the next 16 days are 0.9m 9s and forecast to arrive on Wednesday (Aug 12) at 10PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 2s period and expected on Monday (Aug 10) at 10PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Wed 12th Aug) | 1.5ft (0.5m) 11s |
| Best Surf | 7AM (Wed 12th Aug) | 1.5ft (0.5m) 11s |
| Most Powerful | 10PM (Wed 12th Aug) | 3ft (0.9m) 9s |
Table - best surf conditions forecast for Mewslade Bay over the next 16 days.
The Lowdown
Right then, let’s have a look at what’s on offer for Mewslade Bay over the next couple of weeks. I’ll be straight with you – it’s a bit of a tough stretch. The forecast is showing a lot of poor surf conditions, with waves that are just too small, too messy, or blown out by the wind. The water temperature is sitting at 68°, which is a whopping 7° warmer than normal for this time of year – that’s really unusual, and honestly, it’s a bit eerie.
The pattern for the first week is pretty grim. We’ve got a long run of days with tiny, weak swell and onshore or cross-shore winds that are just chopping everything up. Thursday the 6th through to Tuesday the 11th is basically a write-off, with wave heights barely reaching 2 ft and combined swell energy in the low double digits (48 to 87) – that’s just weak, gutless energy. The wind is mostly cross or cross-on, and the wave comment is “poor surf conditions” across the board. It’s a gap of several days with nothing worth paddling out for.
There is a small glimmer on Wednesday morning, the 12th of August. The wind goes glassy – a major positive – and the swell is a tiny 2 ft from the WSW with a period of 10 seconds. The combined energy is still only 81, so it’s weak, but that glassy wind will make it clean. The report says “surfable waves but very ordinary conditions,” and that’s about right. It’s not a standout, but it’s the only time in the first week where you might get a few fun, clean little waves if you’re desperate.
The second week picks up a bit in size, but the wind remains a problem. By Sunday the 16th of August, we’re looking at 5 ft swell from the WSW with a short period of 7 seconds and onshore wind, making it choppy. The energy is up to 192 (moderate), but the quality is poor. The real kicker comes on Wednesday the 19th of August. The swell jumps to 8 ft from the WSW with an 8-second period, and the combined energy is a massive 611 (strong). That’s a proper swell. But the wind is SSW at 9 mph (onshore), and the conditions are described as “poor surf conditions.” For a beach break like Mewslade Bay, with that much swell and onshore wind, it’s going to be a messy, lumpy mess. This is more interesting for kite surfing than paddle surfing, honestly. The swell is too big for beginners (over 5 ft) and at 8 ft, it’s borderline for experts, especially with the short period.
The best of a bad bunch is arguably Thursday morning, the 20th of August. The swell is still 7 ft from the W with a 7-second period, but the wind is cross-shore from the west at 9 mph, and the energy is 491 (strong). The report says “marginal surf forecast,” but it’s the closest we get to a clean, powerful wave. That’s only for experienced surfers, though. The standouts? There are none. The best on offer is that Thursday morning, but it’s a long way from perfect.
Friday the 21st fades back to 3 ft and weak energy (150), with cross-on wind. So, the whole 16-day window is a real struggle. For a spot that’s “fairly consistent,” this is a disappointing run. Forecasts can change, but right now, it’s not looking good.
Rusty.
Short Range ForecastMostly dry. Very mild (max 19°C on Sat afternoon, min 14°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 23°C on Mon afternoon, min 17°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | |||||||||||||||
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) | W 6 | WSW 6 | WSW 5 | W 9 | W 9 | W 9 | W 9 | W 9 | WSW 7 | SW 7 | WSW 6 | SW 6 | W 6 | WSW 6 | WNW 5 | W 8 | W 10 | WSW 12 | WSW 10 | WSW 10 | WSW 9 |
Wave Graph | |||||||||||||||||||||
78 | 34 | 9 | 7 | 7 | 6 | 2 | 2 | 10 | 11 | 16 | 7 | 16 | 24 | 4 | 5 | 7 | 26 | 80 | 135 | 143 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-off | on | cross-on | cross-off | cross-on | cross | cross-off | cross-off | cross-on | cross-off | glassy | cross-on | cross-off | cross | cross | glassy | glassy | cross-on | cross-off |
High Tide | 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 | 6:35AM7.89m | 6:57PM8.42m | ||||||||
Low Tide | 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 | 12:45PM0.69m | 1:13AM0.33m | ||||||||
5:47 | — | — | 5:48 | — | — | 5:50 | — | — | 5:52 | — | — | 5:52 | — | — | 5:54 | — | — | 5:56 | — | — | |
— | 8:57 | — | — | 8:55 | — | — | 8:53 | — | — | 8:52 | — | — | 8:50 | — | — | 8:47 | — | — | 8:45 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 16 | 15 | 16 | 16 | 16 | 17 | 19 | 18 | 19 | 20 | 18 | 20 | 23 | 21 | 20 | 23 | 22 | 21 | 22 | 20 |
Feels °C | 11 | 11 | 12 | 14 | 13 | 15 | 16 | 16 | 16 | 16 | 17 | 16 | 18 | 19 | 18 | 19 | 21 | 21 | 20 | 20 | 19 |
Swell 1 Height (m) Direction Period (s) | W 6 | W 10 | WSW 5 | WSW 5 | W 9 | W 4 | W 4 | SW 8 | WSW 7 | SW 7 | W 8 | WSW 3 | W 6 | W 8 | WNW 5 | W 8 | W 10 | WSW 12 | WSW 10 | WSW 10 | WSW 9 |
78 | 8 | 9 | 4 | 6 | 3 | 1 | 2 | 10 | 11 | 1 | 2 | 16 | 1 | 4 | 5 | 7 | 26 | 80 | 135 | 143 | |
Swell 2 Height (m) Direction Period (s) | W 10 | SW 12 | W 10 | W 9 | SW 12 | W 9 | W 9 | — | — | SW 12 | S 12 | SW 6 | SW 6 | — | WSW 6 | WSW 6 | SW 6 | W 8 | — | — | WNW 3 |
2 | 6 | 7 | 7 | 6 | 6 | 2 | — | — | 6 | 3 | 7 | 11 | — | 3 | 4 | 1 | 4 | — | — | 2 | |
Swell 3 Height (m) Direction Period (s) | SW 13 | — | SW 12 | SW 6 | — | SW 12 | — | W 9 | — | W 8 | — | W 8 | — | — | W 8 | W 10 | — | SW 6 | — | — | — |
7 | — | 6 | 1 | — | 5 | — | 2 | — | 1 | — | 1 | — | — | 1 | 2 | — | 1 | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | WSW 6 | — | — | WSW 4 | — | — | — | — | — | WSW 6 | W 3 | — | WSW 6 | — | — | — | — | SE 6 | — | — |
— | 34 | — | — | 7 | — | — | — | — | — | 16 | 2 | — | 24 | — | — | — | — | 1 | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 195 | 398 | 366 | 367 | 381 | 378 | 191 | 191 | 180 | 358 | 195 | 180 | 172 | 424 | 180 | 180 | 408 | 48 | 0 | 172 | 0 |
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.











