Surf Forecasts:
Mewslade Bay surf forecast from 20 Jul 2026:
- Most powerful swell: Monday 20 Jul, 4PM (local time) - 0.5ft (0.1m), 18s period, SW swell with 12 kJ wave energy.
Best Forecast Surf Conditions for Mewslade Bay this week:
The most powerful waves expected at Mewslade Bay in the next 16 days are 0.1m 18s and forecast to arrive on Monday (Jul 20) 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 0.7m 4s period and expected on Wednesday (Jul 22) at 7PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4PM (Mon 20th Jul) | 0.5ft (0.1m) 18s |
Table - best surf conditions forecast for Mewslade Bay over the next 16 days.
The Lowdown
Alright, folks. Rusty here. Let's look at the next couple of weeks for Mewslade Bay.
First up, the water's proper warm. It's 69°F, which is a massive 9°F above the norm for this time of year. That's very unusual, so you might be fine in boardshorts.
Right, the forecast. Honestly, it's a tough stretch. The first week and a half is pretty much a write-off. From Sunday 19 July right through to Thursday 30 July, we're looking at tiny, weak waves. The swell heights are mostly 0.3ft to 0.7ft, and the combined energy is barely registering – you'll see numbers like 8 or 15 (weak energy). It's poor surf conditions day after day. There’s a few glassy mornings in there, like Tuesday 21 July morning and Thursday 23 July morning, but with only 0.3ft on offer, it's a lake, not a surf.
We finally get a little bump of life on the 28th. Tuesday 28 July morning sees a 5ft swell from the west, with a period of 7 seconds, and the combined energy jumps to 204 (moderate wave energy). But it’s coming with a cross-shore wind from the WNW at 15 mph, which makes it a bit of a washout. The afternoon is similar, 4ft, but the wind picks up to 18 mph and the chop gets lumpy. Not really one to get excited about.
The only real standout I can see, and it's a long way off, is the morning of Sunday 2 August. We get a 2ft swell from the west, with a period of 5 seconds and a combined energy of 67. The magic is in the wind: a light offshore breeze from the north at 6 mph, making for clean conditions. It’s a small wave, but clean. The Monday morning after that, 3 August, also has some potential with a 2ft swell from the west-southwest, an 8-second period, 75 energy, and a clean offshore north wind at 9 mph. For a spot that's been flat for so long, these are the best shots we've got, but keep in mind the long-range call is less certain.
So, to sum it up: the best on offer is that Sunday 2 August morning, with small but clean, offshore waves. The rest of the period is a write-off. Mewslade Bay is an exposed spot that needs a decent swell from the SW, and it just isn't getting it.
Rusty.
Short Range ForecastMostly dry. Warm (max 22°C on Tue afternoon, min 13°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 24°C on Thu afternoon, min 15°C on Thu night). Wind will be generally light. | |||||||||||||||||||
Sun 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | ||||||||||||||
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 19 | W 19 | W 9 | SW 18 | W 18 | W 11 | W 10 | W 10 | W 10 | W 9 | W 9 | W 9 | W 8 | W 14 | SW 13 | SW 13 | W 8 | SW 12 | S 12 | W 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 7 | 7 | 2 | 12 | 6 | 2 | 2 | 10 | 7 | 7 | 6 | 8 | 6 | 4 | 7 | 7 | 1 | 6 | 3 | 1 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | off | cross | cross | off | glassy | cross | cross-off | cross-off | cross-off | off | glassy | cross-off | cross-off | cross | cross-on | cross-off | cross-off | cross | cross-off |
High Tide | 10:54PM7.85m | 11:17AM7.27m | 11:38PM7.27m | 12:02PM6.78m | 00:26AM6.68m | 12:53PM6.31m | 1:21AM6.18m | 1:54PM5.96m | 2:29AM5.85m | 3:07PM5.83m | 3:44AM5.81m | 4:19PM5.96m | ||||||||
Low Tide | 4:39PM0.98m | 5:07AM1.15m | 5:22PM1.45m | 5:51AM1.66m | 6:09PM1.94m | 6:39AM2.15m | 7:04PM2.39m | 7:36AM2.55m | 8:09PM2.70m | 8:45AM2.76m | 9:24PM2.78m | 9:58AM2.73m | 10:35PM2.61m | |||||||
 |  | | | | | | | | | | | | | | | | |  | | |
 | — | — | 5:22 | — | — | 5:24 | — | — | 5:24 | — | — | 5:26 | — | — | 5:28 | — | — | 5:28 | — | — |
 | — | 9:23 | — | — | 9:22 | — | — | 9:22 | — | — | 9:20 | — | — | 9:19 | — | — | 9:17 | — | — | 9:15 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 20 | 19 | 21 | 19 | 20 | 22 | 18 | 20 | 21 | 21 | 21 | 24 | 18 | 20 | 24 | 21 | 19 | 22 | 19 |
Feels °C | 18 | 16 | 17 | 17 | 17 | 19 | 20 | 14 | 16 | 16 | 18 | 20 | 21 | 15 | 18 | 22 | 19 | 17 | 16 | 16 |
Swell 1 Height (m) Direction Period (s) | — | W 10 | W 9 | W 8 | W 8 | W 11 | W 10 | W 10 | W 10 | W 9 | W 9 | W 9 | W 8 | W 8 | W 8 | W 8 | WNW 3 | W 4 | W 8 | W 3 |
| kJ | — | 2 | 2 | 1 | 1 | 2 | 2 | 8 | 7 | 7 | 6 | 6 | 6 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
Swell 2 Height (m) Direction Period (s) | W 7 | W 7 | — | SW 18 | W 11 | W 7 | W 7 | W 7 | — | — | W 15 | — | W 14 | W 14 | SW 13 | SW 13 | W 8 | W 8 | S 12 | W 8 |
| kJ | 1 | 1 | — | 12 | 2 | 1 | 1 | 1 | — | — | 4 | — | 4 | 4 | 7 | 7 | 1 | 1 | 3 | 1 |
Swell 3 Height (m) Direction Period (s) | W 19 | W 19 | — | W 11 | W 18 | — | — | SW 16 | — | — | — | SW 15 | — | — | — | — | — | SW 12 | — | — |
| kJ | 7 | 7 | — | 2 | 6 | — | — | 10 | — | — | — | 8 | — | — | — | — | — | 6 | — | — |
Wind waves Height (m) Direction Period (s) | — | N 3 | — | — | NNW 4 | — | — | NNW 3 | NNW 3 | NNW 3 | N 3 | — | — | NNW 3 | — | — | N 3 | — | W 3 | — |
| kJ | — | 3 | — | — | 4 | — | — | 5 | 3 | 7 | 6 | — | — | 2 | — | — | 1 | — | 1 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 326 | 366 | 191 | 191 | 364 | 143 | 180 | 198 | 198 | 464 | 78 | 78 | 191 | 125 | 419 | 931 | 429 | 1047 | 434 | 896 |
Best forecast wave conditions in Wales - Gower | ||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Mewslade Bay surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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.
Nearest