Surf Forecasts:
Mewslade Bay surf forecast from 17 Jul 2026:
- Most powerful swell: Sunday 19 Jul, 7PM (local time) - 0.5ft (0.1m), 19s period, SW swell with 15 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 19s and forecast to arrive on Sunday (Jul 19) at 7PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Saturday (Jul 18) at 7PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 7PM (Sun 19th Jul) | 0.5ft (0.1m) 19s |
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 on the cards for Mewslade Bay over the next couple of weeks.
Right off the bat, I gotta be honest with you – it’s a slow start. The first week or so is looking pretty flat. We’re looking at a solid gap of nothing really worth paddling out for from now until the morning of Saturday the 25th of July. The water temp is about average for this time of year, nothing weird going on there.
The first real glimmer of hope, and I mean a glimmer, comes on the Saturday morning (25th July). The swell bumps up to 4ft from the west, with a period of 6 seconds. That’s a short-period, weak windswell, but the combined energy (127) is moderate. The wind is a clean cross-off from the NNW, so the surface will be clean. It’s a small, weak wave, and it’s only for intermediate and above. It’s the best we’ve seen in a while, but it’s not exactly a standout. The same conditions hold into the afternoon with a touch more energy (137).
The real standout, the one that’s got my attention, is the Sunday morning (26th July). The wind goes light and cross-off from the NNW, making for clean, glassy conditions. The swell is 4ft from the west, still short period at 6 seconds, but the combined energy is a solid 104 (moderate). The finder rates it as “surfable waves but very ordinary conditions”, but compared to the rest of the run, this is the pick. It’s the cleanest, most rideable wave of the whole forecast. Crowds are possible at this spot. It’s a fairly consistent break, so it should offer a few little runners.
After that, it drops back down. The 27th through to the end of the run is pretty much back to small, weak energy and poor conditions. Nothing to get excited about.
So, for the best of a mediocre bunch, I’d be aiming for the Sunday morning (26th July). It’s not going to be pumping, but it’ll be the cleanest little wave on offer.
Rusty.
Short Range ForecastMostly dry. Warm (max 25°C on Fri afternoon, min 14°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 23°C on Tue afternoon, min 15°C on Tue night). Winds increasing (light winds from the ESE on Mon morning, strong winds from the N by Wed afternoon). | ||||||||||||||||||||
Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | |||||||||||||||
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 8 | W 8 | W 8 | W 8 | W 8 | S 12 | W 7 | W 19 | W 19 | W 9 | SW 18 | NW 4 | W 11 | W 10 | W 10 | W 10 | W 9 | W 9 | W 9 | W 8 | W 14 |
Wave Graph  | |||||||||||||||||||||
 kJ | 6 | 7 | 7 | 5 | 5 | 3 | 1 | 7 | 7 | 2 | 12 | 2 | 2 | 2 | 10 | 7 | 7 | 8 | 8 | 6 | 4 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-on | off | cross | cross | off | cross | cross | cross-off | cross-off | cross-off | off | glassy | cross | off |
High Tide | 9:27PM8.66m | 9:50AM8.11m | 10:10PM8.34m | 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 | ||||||||
Low Tide | 3:13PM0.36m | 3:41AM0.35m | 3:56PM0.60m | 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 | ||||||||
 | |  |  | |  | | | | | | | | | | | | | | | | |
 | 5:18 | — | — | 5:20 | — | — | 5:20 | — | — | 5:22 | — | — | 5:24 | — | — | 5:24 | — | — | 5:26 | — | — |
 | — | — | 9:25 | — | — | 9:24 | — | — | 9:23 | — | — | 9:22 | — | — | 9:22 | — | — | 9:20 | — | — | 9:19 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 23 | 25 | 20 | 20 | 20 | 19 | 17 | 21 | 19 | 19 | 21 | 21 | 21 | 23 | 21 | 19 | 20 | 17 | 19 | 22 | 22 |
Feels °C | 20 | 22 | 16 | 17 | 15 | 16 | 13 | 17 | 16 | 17 | 18 | 18 | 19 | 20 | 17 | 15 | 14 | 12 | 19 | 20 | 20 |
Swell 1 Height (m) Direction Period (s) | SSW 6 | W 8 | W 8 | W 8 | W 8 | WNW 4 | W 7 | — | W 10 | W 9 | W 8 | NW 4 | W 11 | W 10 | W 10 | W 10 | W 9 | W 9 | N 3 | W 8 | W 8 |
| kJ | 4 | 5 | 5 | 5 | 5 | 1 | 1 | — | 2 | 2 | 1 | 2 | 2 | 2 | 8 | 7 | 7 | 6 | 1 | 6 | 1 |
Swell 2 Height (m) Direction Period (s) | W 8 | SW 6 | SW 6 | SW 5 | SW 5 | W 8 | — | W 7 | W 7 | — | SW 18 | W 8 | W 7 | W 7 | SW 16 | W 16 | — | SW 14 | W 9 | W 14 | W 14 |
| kJ | 5 | 1 | 1 | 1 | 1 | 1 | — | 1 | 1 | — | 12 | 1 | 1 | 1 | 10 | 5 | — | 8 | 6 | 4 | 4 |
Swell 3 Height (m) Direction Period (s) | SW 12 | SW 13 | SW 13 | W 13 | S 11 | S 12 | — | W 19 | W 19 | — | W 11 | W 11 | — | — | W 7 | — | — | — | SW 15 | — | — |
| kJ | 6 | 7 | 7 | 3 | 2 | 3 | — | 7 | 7 | — | 2 | 2 | — | — | 1 | — | — | — | 8 | — | — |
Wind waves Height (m) Direction Period (s) | — | — | NNW 3 | NNW 3 | NNW 4 | NE 3 | E 3 | — | N 3 | — | — | N 3 | — | — | NNW 3 | NNW 4 | NNW 4 | NNW 4 | — | — | — |
| kJ | — | — | 4 | 1 | 17 | 8 | 1 | — | 5 | — | — | 6 | — | — | 4 | 10 | 18 | 17 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 299 | 299 | 780 | 377 | 429 | 429 | 88 | 191 | 464 | 364 | 192 | 377 | 374 | 125 | 814 | 198 | 896 | 890 | 198 | 394 | 425 |
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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