Surf Forecasts:
Mewslade Bay surf forecast from 7 Aug 2026:
- Best quality surf: Wednesday 12 Aug, 4AM (local time) - 1.5ft (0.5m), 11s period, W swell with cross-offshore winds.
- Most powerful swell: Thursday 13 Aug, 1PM (local time) - 3.5ft (1.1m), 10s period, WSW swell with 214 kJ wave energy.
- Next surfable swell (1★+): Wednesday 12 Aug, 4AM (local time) - 1.5ft (0.5m), 11s period with W 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 4AM. The primary swell is predicted to be 0.5m and 11s period with a secondary swell of 0.1m and 6s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Mewslade Bay in the next 16 days are 1.1m 10s and forecast to arrive on Thursday (Aug 13) at 1PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Sunday (Aug 09) at 10PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Wed 12th Aug) | 1.5ft (0.5m) 11s |
| Best Surf | 4AM (Wed 12th Aug) | 1.5ft (0.5m) 11s |
| Most Powerful | 1PM (Thu 13th Aug) | 3.5ft (1.1m) 10s |
Table - best surf conditions forecast for Mewslade Bay over the next 16 days.
The Lowdown
Alright, grab a coffee and have a listen. This is a tough one to call, because Mewslade Bay is looking more like a lake than a surf break for the next week or so. We've got a lot of flat spells and small, windy junk to work through. The big story is that the water is absolutely roasting – 4° warmer than usual for this time of year, which is crazy. You won't need a wetsuit, that's for sure.
The whole 16-day window is a bit of a struggle. The first week is a write-off, and there's a big gap of nothing to get excited about. We're looking at Thursday, the 20th of August, before anything even says "surfable." Even then, it's a pretty ordinary morning. The wind is a clean cross-offshore from the NW, and we've got a tiny 2 ft swell from the West, running at a slow 10-second period. The combined energy is a weak 74, so don't expect any power. It's not a standout, it's just the only thing that's not completely blown out.
For the die-hards, the Monday morning of the 17th of August might be worth a paddle. The swell is from the WSW at 3 ft, with a short 5-second period, and the wind is light offshore from the NNE. It'll be clean, but after the flat spell, that's something. There's nothing here that screams "go-time," so I'd be watching the forecasts closely. The setup is a beach, so with the small, weak swell and the onshore winds that are forecast, it's honestly more interesting for a kite than a surfboard for most of this run.
Rusty.
Short Range ForecastMostly dry. Warm (max 20°C on Sun morning, min 14°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 27°C on Tue afternoon, min 17°C on Mon night). Wind will be generally light. | |||||||||||||||||||
Thu 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | ||||||||||||||
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 6 | WSW 5 | W 9 | WSW 5 | W 9 | W 9 | WSW 8 | SW 7 | SW 7 | WSW 6 | SW 6 | SW 6 | SW 6 | SW 6 | W 8 | W 10 | WSW 11 | WSW 10 | WSW 9 | WSW 9 |
Wave Graph  | ||||||||||||||||||||
 kJ | 43 | 9 | 7 | 7 | 6 | 6 | 6 | 12 | 11 | 6 | 7 | 6 | 9 | 7 | 5 | 7 | 43 | 102 | 153 | 147 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-off | on | cross-on | cross-off | cross | cross | glassy | glassy | cross | cross-off | cross-off | cross | off | cross | cross-on | glassy | cross-on | cross-on | cross |
High Tide | 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 | |||||||
 |  | | | |  | | | |  | | | | | | | | | | | |
 | — | — | 5:48 | — | — | 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 | 15 | 16 | 16 | 16 | 17 | 19 | 19 | 20 | 22 | 19 | 22 | 24 | 21 | 24 | 27 | 24 | 22 | 23 | 20 |
Feels °C | 11 | 12 | 15 | 13 | 15 | 16 | 17 | 18 | 17 | 18 | 17 | 20 | 22 | 18 | 22 | 25 | 23 | 21 | 18 | 19 |
Swell 1 Height (m) Direction Period (s) | W 10 | WSW 5 | WSW 5 | W 9 | W 4 | W 4 | WSW 8 | SW 7 | SW 7 | WSW 6 | SW 6 | SW 6 | SW 6 | WNW 4 | WSW 6 | WSW 6 | WSW 11 | WSW 10 | WSW 9 | WSW 9 |
| kJ | 8 | 9 | 4 | 6 | 3 | 1 | 6 | 12 | 11 | 4 | 7 | 6 | 9 | 2 | 4 | 4 | 43 | 102 | 153 | 147 |
Swell 2 Height (m) Direction Period (s) | SW 12 | W 10 | W 9 | SW 5 | W 9 | W 9 | — | — | W 9 | W 8 | W 8 | W 4 | W 8 | SW 6 | W 8 | W 10 | W 8 | SW 6 | — | — |
| kJ | 6 | 7 | 7 | 1 | 6 | 6 | — | — | 1 | 1 | 1 | 1 | 1 | 7 | 5 | 7 | 5 | 1 | — | — |
Swell 3 Height (m) Direction Period (s) | — | SW 12 | SW 6 | SW 12 | SW 12 | W 5 | W 9 | — | SW 12 | SW 12 | — | W 8 | W 11 | W 8 | W 10 | — | SW 6 | — | — | — |
| kJ | — | 6 | 1 | 6 | 5 | 1 | 2 | — | 6 | 6 | — | 1 | 2 | 1 | 2 | — | 1 | — | — | — |
Wind waves Height (m) Direction Period (s) | WSW 6 | — | — | WSW 5 | — | — | — | — | — | — | NW 3 | — | W 5 | — | — | — | — | — | — | — |
| kJ | 43 | — | — | 7 | — | — | — | — | — | — | 3 | — | 4 | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 398 | 206 | 367 | 381 | 359 | 358 | 191 | 180 | 408 | 195 | 180 | 181 | 195 | 180 | 191 | 322 | 4 | 1 | 124 | 1 |
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.
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