Surf Forecasts:
Mewslade Bay surf forecast from 2 Sep 2026:
- Best quality surf: Saturday 5 Sep, 7AM (local time) - 3.5ft (1.1m), 7s period, W swell with cross-offshore winds.
- Most powerful swell: Monday 7 Sep, 4PM (local time) - 5.5ft (1.7m), 12s period, WSW swell with 890 kJ wave energy.
- Next surfable swell (1★+): Saturday 5 Sep, 7AM (local time) - 3.5ft (1.1m), 7s 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 Saturday (Sep 05) at 7AM. The primary swell is predicted to be 1.1m and 7s period with a secondary swell of 0.1m and 14s. 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 1.7m 12s and forecast to arrive on Monday (Sep 07) at 4PM. 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 Wednesday (Sep 09) at 7AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Sat 5th Sep) | 3.5ft (1.1m) 7s |
| Best Surf | 7AM (Sat 5th Sep) | 3.5ft (1.1m) 7s |
| Most Powerful | 4PM (Mon 7th Sep) | 5.5ft (1.7m) 12s |
Table - best surf conditions forecast for Mewslade Bay over the next 16 days.
The Lowdown
Alright, Rusty here once more, this time in feet and miles per hour for the imperial crowd.
Mewslade Bay is staring down a long, quiet stretch. The first week is basically a write-off—wind mostly onshore or cross-shore, lumpy and choppy, with hardly any waves worth the wetsuit. Water temperature is about average for the season, nothing unusual.
There’s a faint flicker on the morning of Monday, the 7th of September. A NW cross-offshore breeze cleans things up, and we’ve got swell from the WSW running about 4 ft with a 13-second period. That’s solid groundswell energy (470 combined energy). The longer period will give them some shape, but at a beach break, those long waits between sets can make things a bit straight. Still, it’s clean, and that’s a welcome change.
The real standout comes on Thursday, the 17th of September. Morning time: clear skies, a light offshore breeze out of the NE, and the swell pushes up to 5 ft from the WSW with a 10-second period (813 combined energy). This is the best window in the whole 16-day forecast. Clean, punchy, and powerful—this one is worth the wait. The direction lines up perfect with the bay’s optimum, so expect proper wedges. Crowds are a real possibility, so get there early. This one’s good for strong intermediates and above.
After that, it fades back to small stuff, maybe glassy but not much power. So, the 17th is your golden ticket. The first week is a total dud.
Rusty.
Short Range ForecastLight rain (total 8mm), mostly falling on Thu night. Very mild (max 19°C on Wed afternoon, min 16°C on Tue night). Winds increasing (light winds from the WSW on Tue night, strong winds from the SW by Thu night). | Days 4-6 Weather SummaryMostly dry. Warm (max 21°C on Sun afternoon, min 13°C on Fri night). Winds increasing (calm on Sat night, fresh winds from the W by Mon afternoon). | ||||||||||||||||||||
Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | |||||||||||||||
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) | SW 6 | WSW 7 | WSW 7 | WSW 8 | WSW 7 | WSW 6 | WSW 8 | WSW 8 | W 7 | W 7 | WSW 7 | WSW 9 | W 9 | W 8 | WSW 8 | WSW 13 | WSW 12 | WSW 8 | WSW 10 | WSW 10 | WSW 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 97 | 363 | 369 | 214 | 294 | 351 | 398 | 302 | 145 | 92 | 69 | 65 | 40 | 36 | 75 | 458 | 890 | 291 | 341 | 235 | 140 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-off | cross | cross-on | cross-off | cross | cross-on | on | cross-off | cross | cross-on | cross-on | cross-on | cross-on |
High Tide | 10:08AM7.90m | 10:28PM7.78m | 10:51AM7.44m | 11:16PM7.20m | 11:43AM6.88m | 00:16AM6.58m | 12:52PM6.37m | 1:38AM6.14m | 2:24PM6.19m | 3:16AM6.18m | 3:56PM6.54m | 4:36AM6.67m | 5:04PM7.20m | ||||||||
Low Tide | 4:06PM0.85m | 4:28AM1.10m | 4:49PM1.33m | 5:16AM1.67m | 5:45PM1.90m | 6:20AM2.24m | 7:06PM2.39m | 7:55AM2.58m | 8:54PM2.45m | 9:38AM2.39m | 10:25PM1.99m | 10:53AM1.83m | 11:27PM1.35m | ||||||||
 |  |  | |  |  |  | |  | | | | | | | | |  | | | | |
 | 6:30 | — | — | 6:31 | — | — | 6:33 | — | — | 6:35 | — | — | 6:35 | — | — | 6:37 | — | — | 6:39 | — | — |
 | — | 8:01 | — | — | 8:00 | — | — | 7:58 | — | — | 7:54 | — | — | 7:52 | — | — | 7:51 | — | — | 7:49 | — |
mm | 2 | — | — | — | — | 5 | — | — | — | — | — | — | — | — | — | — | — | 1 | 2 | 4 | 15 |
Temp °C | 17 | 19 | 19 | 19 | 18 | 18 | 16 | 17 | 17 | 14 | 15 | 15 | 19 | 21 | 19 | 16 | 16 | 17 | 17 | 17 | 16 |
Feels °C | 12 | 15 | 16 | 17 | 15 | 14 | 11 | 12 | 13 | 12 | 13 | 13 | 15 | 18 | 16 | 13 | 11 | 12 | 12 | 14 | 14 |
Swell 1 Height (m) Direction Period (s) | SW 16 | — | W 15 | SW 15 | SW 15 | — | WSW 8 | SW 14 | W 8 | W 7 | SW 13 | WSW 9 | W 9 | W 8 | WSW 8 | WSW 13 | — | WSW 8 | WSW 10 | WSW 10 | WSW 9 |
| kJ | 10 | — | 4 | 8 | 9 | — | 398 | 8 | 37 | 92 | 7 | 65 | 40 | 36 | 75 | 458 | — | 266 | 341 | 235 | 140 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | SW 15 | — | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 13 | WSW 16 | — | — | WSW 11 | — | — | — |
| kJ | — | — | — | — | — | — | 8 | — | 8 | 7 | 7 | 7 | 7 | 6 | 51 | — | — | 198 | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | SW 14 | — | — | — | W 13 | SW 12 | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | 8 | — | — | — | 3 | 6 | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SW 6 | WSW 7 | WSW 7 | WSW 8 | WSW 7 | WSW 6 | — | WSW 8 | W 7 | — | WSW 7 | — | SE 3 | SE 3 | — | SW 4 | WSW 12 | W 8 | — | — | — |
| kJ | 97 | 363 | 369 | 214 | 294 | 351 | — | 302 | 145 | — | 69 | — | 2 | 1 | — | 12 | 890 | 291 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 415 | 322 | 139 | 124 | 311 | 159 | 31 | 338 | 31 | 0 | 146 | 0 | 95 | 4 | 90 | 10 | 194 | 135 | 141 | 204 | 13 |
Best forecast wave conditions in Wales - Gower | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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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