Surf Forecasts:
Mewslade Bay surf forecast from 19 Jul 2026:
- Most powerful swell: Sunday 26 Jul, 7AM (local time) - 3.5ft (1.0m), 6s period, W swell with 67 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 1.0m 6s and forecast to arrive on Sunday (Jul 26) at 7AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Wednesday (Jul 22) at 10PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 7AM (Sun 26th Jul) | 3.5ft (1.0m) 6s |
Table - best surf conditions forecast for Mewslade Bay over the next 16 days.
The Lowdown
Alright, folks, Rusty here. Let’s have a look at what’s coming down the line for Mewslade Bay.
To be honest, it’s a pretty slow start. We’re looking at a long dry spell right through the first week, with nothing worth paddling out for. The combined swell energy is barely registering, mostly single-digit values, and the wave heights are tiny – we’re talking 0.3ft to 0.7ft. It’s going to be a frustrating wait. The water temp is about average for this time of year, so at least it won’t be a shock when you do get in.
The first real sign of life doesn’t show up until Sunday, July 26th. The swell starts to build, but it’s messy. The wind is cross-shore with a cross-chop, and the period is a short, weak 6 seconds. It’s not really surfable. By Tuesday, July 28th, things get a little more interesting. The morning shows a clean, cross-offshore breeze and a 2ft swell from the W with a 9-second period. The combined energy is 79 (moderate) – still not a standout, but it’s the first time we see a "surfable" comment. The waves will be ordinary, but for a desperate surfer, it’s something to wet the line.
The real standout, the only one I’d call a highlight, is that brief window on Thursday, July 23rd. The swell is only 0.3ft, but the stars align for a moment. The wind is glassy, and the period is a long 15 seconds from the SW. The combined energy is 18 (weak), but for a south-west facing spot like Mewslade Bay, that long period groundswell, even tiny, will wrap in beautifully. The water will be like a mirror. It’s a rare, subtle moment of perfection for the patient soul.
After that, the second week is a bit of a washout again. The swell picks up a touch on the 26th and 27th, hitting 4ft on the 26th afternoon with a 6-second period, but the wind is a cross-shore mess. It’s not going to be pretty. The strongest energy we see in the entire run is 113 (moderate) on that Sunday afternoon, but the poor conditions kill it. There’s a chance of a clean morning on the 28th, but it’s gone by the afternoon.
So, bottom line: get out there on the morning of Thursday, July 23rd if you own a log and have a good eye for a tiny wall. Tuesday, July 28th morning is the next best bet for a bit of size, but it’s not going to be special. The rest? A waiting game.
Rusty.
Short Range ForecastMostly dry. Warm (max 23°C on Tue afternoon, min 15°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 22°C on Fri afternoon, min 13°C on Tue night). Winds decreasing (fresh winds from the N on Wed afternoon, calm by Fri morning). | ||||||||||||||||||||
Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | |||||||||||||||
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) | W 11 | W 7 | 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 | WSW 3 |
Wave Graph  | |||||||||||||||||||||
 kJ | 2 | 1 | 7 | 2 | 12 | 6 | 2 | 2 | 10 | 7 | 7 | 6 | 8 | 6 | 4 | 7 | 7 | 1 | 6 | 3 | 3 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | off | cross-off | cross-off | off | cross | cross | cross-off | cross-off | cross-off | off | glassy | cross-off | cross-off | glassy | cross-on | cross-off | cross | cross-on | cross-on |
High Tide | 10:33AM7.74m | 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 | 4:24AM0.69m | 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 | |||||||
 |  |  | | | | | | | | | | | | | | | | | |  | |
 | 5:20 | — | — | 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 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 |
Temp °C | 19 | 21 | 19 | 19 | 21 | 19 | 20 | 23 | 20 | 18 | 19 | 18 | 19 | 21 | 17 | 18 | 22 | 20 | 17 | 18 | 17 |
Feels °C | 17 | 17 | 16 | 17 | 18 | 17 | 19 | 19 | 17 | 14 | 14 | 15 | 18 | 18 | 14 | 16 | 19 | 17 | 15 | 14 | 14 |
Swell 1 Height (m) Direction Period (s) | W 7 | — | 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 | W 8 | W 8 | W 8 | W 8 |
| kJ | 1 | — | 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 | SW 15 | W 14 | W 14 | SW 13 | SW 13 | — | SW 12 | S 12 | — |
| kJ | — | 1 | 1 | — | 12 | 2 | 1 | 1 | 1 | — | — | 4 | 8 | 4 | 4 | 7 | 7 | — | 6 | 3 | — |
Swell 3 Height (m) Direction Period (s) | W 11 | — | W 19 | — | W 11 | W 18 | — | — | SW 16 | — | — | — | W 15 | — | — | — | — | — | — | — | W 9 |
| kJ | 2 | — | 7 | — | 2 | 6 | — | — | 10 | — | — | — | 4 | — | — | — | — | — | — | — | 2 |
Wind waves Height (m) Direction Period (s) | ESE 3 | NW 4 | N 3 | — | — | NNW 4 | — | — | NNW 3 | NNW 3 | NNW 3 | N 4 | NNW 3 | — | NNW 3 | — | — | WNW 3 | — | WSW 2 | WSW 3 |
| kJ | 3 | 1 | 1 | — | — | 4 | — | — | 4 | 3 | 8 | 12 | 1 | — | 1 | — | — | 1 | — | 1 | 3 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 191 | 326 | 366 | 191 | 191 | 384 | 143 | 180 | 198 | 198 | 775 | 198 | 429 | 524 | 367 | 378 | 898 | 424 | 435 | 775 | 395 |
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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