Surf Forecasts:
Mewslade Bay surf forecast from 31 Aug 2026:
- Best quality surf: Sunday 6 Sep, 1AM (local time) - 1.5ft (0.4m), 10s period, WSW swell with glassy winds.
- Most powerful swell: Monday 31 Aug, 4PM (local time) - 6ft (1.9m), 10s period, WSW swell with 631 kJ wave energy.
- Next surfable swell (1★+): Sunday 6 Sep, 1AM (local time) - 1.5ft (0.4m), 10s 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 Sunday (Sep 06) at 1AM. The primary swell is predicted to be 0.6m and 6s period with a secondary swell of 0.4m and 10s. 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 1.9m 10s and forecast to arrive on Monday (Aug 31) at 4PM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Sun 6th Sep) | 1.5ft (0.4m) 10s |
| Best Surf | 1AM (Sun 6th Sep) | 1.5ft (0.4m) 10s |
| Most Powerful | 4PM (Mon 31st Aug) | 6ft (1.9m) 10s |
Table - best surf conditions forecast for Mewslade Bay over the next 16 days.
The Lowdown
Alright folks, Rusty here, looking at the Mewslade Bay forecast for the next couple of weeks. I gotta be straight with you — it's a tough stretch ahead if you're looking for a wave.
The pattern is pretty grim, with onshore winds and messy conditions dominating. There’s one real standout window, but you've got to wade through a lot of slop to get to it.
We start off with a bit of size, but it's no good. Monday the 31st has some 7ft from the WSW with a 9-second period, and the water is *much warmer than usual* for late August, at 68°. The combined energy here is 807 (moderate). But that fresh 19 mph NW wind is ruining it, making it a frustrating, choppy mess. Not worth paddling out.
The rest of this week and into the next is a write-off. We’re looking at a gap of about a week without any decent recommendations. We get some rain on Wednesday the 2nd and Thursday the 3rd with onshore wind pushing into the 6ft range, but the quality is just poor. Even when the swell drops, the wind stays ugly.
Now, here’s the silver lining. The best surf on offer is on Tuesday, the 8th of September. It’s the only day that looks genuinely clean. We get a glassy morning with the wind dropping to basically nothing (3 mph), and a clean 4ft ground swell rolling in from the W with a very long 11-second period. The combined energy is 326 (moderate). This is a point-and-reef kind of wave with that long period, so Mewslade Bay should hold it well. It’s the pick of the period for any intermediate surfer looking for a clean, lined-up wave. Keep in mind, it can get crowded here sometimes, so get out early.
After that Tuesday morning window, the wind swings onshore again and the surf goes back to junk. There’s a final pulse of size, with 10ft and strong wind showing up on Monday the 15th, but the wind is a strong, messy onshore – that’s only for the experts, and even then it won't be pretty. It honestly looks better for the kite surfers than anyone with a paddle.
So, get your fix on the 8th if you can. For the rest, it’s a waiting game.
Rusty
Short Range ForecastModerate rain (total 11mm), heaviest on Wed morning. Very mild (max 18°C on Wed afternoon, min 15°C on Mon morning). Winds increasing (light winds from the W on Mon night, strong winds from the SW by Wed morning). | Days 4-6 Weather SummaryModerate rain (total 18mm), heaviest on Thu night. Very mild (max 18°C on Thu morning, min 14°C on Fri night). Winds decreasing (fresh winds from the W on Fri morning, calm by Sat night). | ||||||||||||||||||||
Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | |||||||||||||||
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) | WSW 9 | WSW 10 | WSW 10 | WSW 9 | WSW 4 | WSW 5 | WSW 6 | WSW 7 | WSW 7 | WSW 6 | WSW 7 | WSW 7 | W 7 | W 7 | W 7 | W 7 | W 6 | WSW 10 | WSW 9 | W 9 | WSW 5 |
Wave Graph  | |||||||||||||||||||||
 kJ | 807 | 631 | 276 | 137 | 37 | 44 | 108 | 332 | 294 | 297 | 294 | 286 | 366 | 447 | 381 | 181 | 84 | 33 | 66 | 40 | 17 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | on | cross-on | cross-on | cross | cross | cross | cross-off | cross | glassy | on | cross-on | cross-on |
High Tide | 9:11PM8.50m | 9:30AM8.21m | 9:48PM8.23m | 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 | ||||||||
Low Tide | 2:54PM0.34m | 3:14AM0.38m | 3:28PM0.51m | 3:49AM0.66m | 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 | ||||||||
 | |  |  | |  |  |  | | | |  | | |  |  | | | | | | |
 | 6:26 | — | — | 6:28 | — | — | 6:30 | — | — | 6:31 | — | — | 6:33 | — | — | 6:35 | — | — | 6:35 | — | — |
 | — | 8:07 | — | — | 8:04 | — | — | 8:01 | — | — | 8:00 | — | — | 7:58 | — | — | 7:54 | — | — | 7:52 | — |
mm | — | — | — | — | — | 3 | 3 | 1 | 4 | 3 | 4 | 10 | 1 | — | — | — | — | — | — | — | — |
Temp °C | 16 | 16 | 17 | 17 | 17 | 17 | 17 | 18 | 18 | 18 | 18 | 17 | 16 | 17 | 17 | 16 | 16 | 15 | 15 | 16 | 16 |
Feels °C | 11 | 11 | 13 | 14 | 14 | 15 | 11 | 14 | 15 | 15 | 16 | 14 | 10 | 11 | 11 | 12 | 12 | 14 | 12 | 14 | 14 |
Swell 1 Height (m) Direction Period (s) | — | — | WSW 10 | — | SW 18 | W 8 | SW 16 | SW 16 | SW 15 | SW 15 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | W 7 | W 6 | WSW 6 | WSW 9 | W 9 | WSW 5 |
| kJ | — | — | 276 | — | 12 | 11 | 10 | 10 | 9 | 9 | 9 | 9 | 8 | 8 | 8 | 181 | 84 | 33 | 66 | 40 | 17 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | SW 16 | W 16 | — | W 15 | — | — | — | — | — | — | SW 14 | WSW 10 | WSW 10 | SW 13 | SW 13 | W 8 |
| kJ | — | — | — | — | — | 10 | 5 | — | 4 | — | — | — | — | — | — | 8 | 35 | 33 | 7 | 6 | 12 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 13 | SW 13 | — | — | SW 12 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 7 | 7 | — | — | 6 |
Wind waves Height (m) Direction Period (s) | WSW 9 | WSW 10 | — | WSW 9 | WSW 4 | WSW 5 | WSW 6 | WSW 7 | WSW 7 | WSW 6 | WSW 7 | WSW 7 | W 7 | W 7 | W 7 | — | — | — | — | — | — |
| kJ | 807 | 631 | — | 137 | 37 | 44 | 108 | 332 | 294 | 297 | 294 | 286 | 366 | 447 | 381 | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 358 | 33 | 64 | 104 | 172 | 95 | 322 | 408 | 139 | 139 | 378 | 134 | 295 | 358 | 322 | 44 | 124 | 0 | 46 | 153 | 126 |
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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