Surf Forecasts:
Mewslade Bay surf forecast from 6 Sep 2026:
- Best quality surf: Friday 11 Sep, 7PM (local time) - 3ft (0.9m), 8s period, WSW swell with glassy winds.
- Most powerful swell: Monday 7 Sep, 10AM (local time) - 5ft (1.6m), 14s period, WSW swell with 986 kJ wave energy.
- Next surfable swell (1★+): Friday 11 Sep, 7PM (local time) - 3ft (0.9m), 8s 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 Friday (Sep 11) at 7PM. The primary swell is predicted to be 0.9m and 8s period. 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 1.6m 14s and forecast to arrive on Monday (Sep 07) at 10AM. 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+) | 7PM (Fri 11th Sep) | 3ft (0.9m) 8s |
| Best Surf | 7PM (Fri 11th Sep) | 3ft (0.9m) 8s |
| Most Powerful | 10AM (Mon 7th Sep) | 5ft (1.6m) 14s |
Table - best surf conditions forecast for Mewslade Bay over the next 16 days.
The Lowdown
Right then, let's have a look at what we've got for Mewslade Bay over the next couple of weeks. Straight up, I've got to be honest with you – this is a tough stretch. The water's sitting at 66°F which is much warmer than normal for this time of year, but that's about the only thing that's working in our favour for a while.
We're looking at a long, dry spell to kick things off. From now through to the middle of the month, there's nothing worth paddling out for. The swell is around, but the wind is just wrecking it – mostly cross-on or onshore, and often blowing a fresh breeze. The combined wave energy is weak, under 100 early on, and even when it picks up to moderate levels the quality is shot. It's a proper waiting game.
Monday the 7th of September does see a pulse of proper groundswell push through – a 5ft WSW swell with a long 14 second period. The combined energy hits a very strong 1352, so there's plenty of juice in the water. But the wind swings West-Northwest at 12 mph, making it cross-shore and choppy. The morning is only marginal at best, and by afternoon it's just poor. It's the kind of day that'll have you checking the forecast more than waxing up.
There's a bit of a silver lining late in the run. On Saturday the 19th of September, the morning is looking like the pick of the entire forecast. A clean 3ft swell from the WSW, and the wind is coming from the NNE at 9 mph – that's offshore. It's gentle, clean, and the combined energy is a moderate 207. This is the standout, no question. It's the only time we see an offshore wind and decent conditions on the same page. The break is fairly consistent and exposed to the SW, so when it lines up, it works.
Later that same afternoon, the wind drops to glassy. It'll be surfable, but the waves will be very ordinary – that 3ft swell is just hanging in there.
So, for the next two weeks, your one true shot is that Saturday morning. Everything before that is a write-off, and after that it gets messy again. Keep the 19th circled, mate. If you've got a flexible schedule, that's your window. Otherwise, it's a blank run, which for this area is a bit more normal than we'd like.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Mon night. Warm (max 21°C on Sun afternoon, min 13°C on Tue night). Winds increasing (light winds from the S on Sun afternoon, strong winds from the SW by Mon night). | Days 4-6 Weather SummaryLight rain (total 5mm), mostly falling on Wed night. Very mild (max 18°C on Thu night, min 14°C on Wed morning). Winds decreasing (fresh winds from the WNW on Wed morning, calm by Fri afternoon). | ||||||||||||||||||||
Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 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) | WSW 6 | WSW 6 | WSW 7 | WSW 14 | W 13 | WSW 7 | WSW 8 | W 8 | W 7 | W 7 | W 7 | WSW 6 | SW 7 | WSW 6 | WSW 8 | WSW 9 | WSW 9 | WSW 8 | SW 8 | WSW 7 | WSW 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 39 | 62 | 93 | 986 | 865 | 572 | 644 | 548 | 392 | 276 | 176 | 35 | 119 | 209 | 256 | 213 | 134 | 75 | 164 | 456 | 483 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross-on | cross | cross-on | cross-on | cross | cross | cross | cross | cross | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross | on | cross-on | cross |
High Tide | 2:24PM6.19m | 3:16AM6.18m | 3:56PM6.54m | 4:36AM6.67m | 5:04PM7.20m | 5:34AM7.31m | 5:56PM7.89m | 6:21AM7.90m | 6:40PM8.44m | 7:02AM8.34m | 7:20PM8.77m | 7:40AM8.58m | 7:57PM8.86m | ||||||||
Low Tide | 8:54PM2.45m | 9:38AM2.39m | 10:25PM1.99m | 10:53AM1.83m | 11:27PM1.35m | 11:47AM1.20m | 00:15AM0.74m | 12:31PM0.65m | 00:56AM0.29m | 1:10PM0.27m | 1:33AM0.05m | 1:46PM0.09m | 2:07AM0.02m | ||||||||
 |  |  | |  |  | | |  | | |  |  | | | | | | | | | |
 | 6:35 | — | — | 6:37 | — | — | 6:39 | — | — | 6:41 | — | — | 6:43 | — | — | 6:43 | — | — | 6:46 | — | — |
 | — | 7:52 | — | — | 7:51 | — | — | 7:49 | — | — | 7:45 | — | — | 7:44 | — | — | 7:42 | — | — | 7:38 | — |
mm | — | — | — | — | — | 4 | — | — | — | — | — | 1 | 1 | — | 2 | 1 | — | — | — | — | — |
Temp °C | 19 | 21 | 18 | 17 | 17 | 16 | 15 | 16 | 15 | 15 | 15 | 16 | 16 | 17 | 18 | 17 | 18 | 18 | 18 | 18 | 16 |
Feels °C | 17 | 20 | 17 | 14 | 13 | 9 | 8 | 9 | 7 | 9 | 9 | 13 | 11 | 13 | 14 | 15 | 18 | 19 | 16 | 14 | 13 |
Swell 1 Height (m) Direction Period (s) | WSW 6 | WSW 6 | WSW 16 | WSW 14 | W 13 | — | — | — | — | — | — | WSW 8 | W 12 | W 11 | W 8 | WSW 9 | WSW 9 | WSW 8 | WSW 8 | — | WSW 8 |
| kJ | 39 | 62 | 53 | 986 | 865 | — | — | — | — | — | — | 32 | 3 | 2 | 195 | 213 | 134 | 75 | 33 | — | 483 |
Swell 2 Height (m) Direction Period (s) | WSW 9 | SW 13 | SW 12 | W 13 | — | — | — | — | — | — | — | W 13 | W 12 | — | — | — | — | — | — | — | — |
| kJ | 16 | 6 | 6 | 366 | — | — | — | — | — | — | — | 3 | 3 | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | SW 13 | — | — | — | — | — | — | — | — | — | — | W 13 | — | — | — | — | — | — | — | — | — |
| kJ | 7 | — | — | — | — | — | — | — | — | — | — | 3 | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SE 3 | — | WSW 7 | — | — | WSW 7 | WSW 8 | W 8 | W 7 | W 7 | W 7 | WSW 6 | SW 7 | WSW 6 | WSW 8 | — | — | — | SW 8 | WSW 7 | — |
| kJ | 2 | — | 93 | — | — | 572 | 644 | 548 | 392 | 276 | 176 | 35 | 119 | 209 | 256 | — | — | — | 164 | 456 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 46 | 172 | 114 | 10 | 135 | 260 | 322 | 358 | 358 | 358 | 395 | 194 | 244 | 195 | 124 | 95 | 66 | 2 | 124 | 384 | 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.
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