Surf Forecasts:
Mewslade Bay surf forecast from 25 Jul 2026:
- Best quality surf: Friday 31 Jul, 10PM (local time) - 7ft (2.1m), 8s period, SW swell with offshore winds.
- Most powerful swell: Friday 31 Jul, 10PM (local time) - 7ft (2.1m), 8s period, SW swell with 519 kJ wave energy.
- Next surfable swell (1★+): Sunday 26 Jul, 10PM (local time) - 5ft (1.5m), 7s period with W 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 (Jul 26) at 10PM. The primary swell is predicted to be 1.5m and 7s period with a secondary swell of 1.3m and 7s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Mewslade Bay in the next 16 days are 2.1m 8s and forecast to arrive on Friday (Jul 31) at 10PM. Winds are predicted to be offshore at the time the swell arrives.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Sun 26th Jul) | 5ft (1.5m) 7s |
| Best Surf | 10PM (Fri 31st Jul) | 7ft (2.1m) 8s |
| Most Powerful | 10PM (Fri 31st Jul) | 7ft (2.1m) 8s |
Table - best surf conditions forecast for Mewslade Bay over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get into it.
To be honest, the immediate outlook for Mewslade Bay is a real struggle. We’re looking at a long stretch of pretty flat, weak conditions. From Saturday the 25th right through to the end of July, there’s barely a ripple worth paddling for. The wind is mostly cross or cross-onshore, and the swell is tiny, often under 3 ft, with poor energy (low double-digit readings). The wave state is chop – no good for a clean ride.
You’ll be waiting a full week, through a lot of nothing, until Friday the 31st of July. That afternoon, things finally change. The wind drops to nothing – glassy – and we get a little 4 ft pulse from the SW with a combined energy of 106 (moderate). It’s surfable, but the conditions are described as very ordinary. Still, it’s the first real chance you’ll get.
The next morning, Saturday the 1st of August, the swell picks up a bit more, 4 ft from the WSW, and the energy jumps to 392 (moderate). The problem is the wind swings onshore, making it choppy and messy. Not worth the drive.
Now, for the real standout. You have to wait until Wednesday the 5th of August. This is the one. We’ve got a proper 10 ft swell from the WSW, with a huge combined energy of 1294 (strong to very strong). The morning is glassy – dead calm – and the wind is light. This is a significant groundswell event with a period of 9 seconds. However, at 10 ft, this is strictly for experienced surfers only. It’s predicted to be too big for the break, so only the experts should even think about it. The afternoon stays solid at 10 ft with a 1316 energy reading, but the wind picks up to a gentle cross-shore, creating a bit of a chop. Even so, this is the biggest, most powerful swell of the entire 16-day window.
After that, Thursday the 6th of August drops back to 4 ft with a cross-offshore wind, giving clean conditions but very ordinary surf. Friday the 7th and beyond are back to small, weak, and not worth the paddle.
The water temperature is about average for this time of year here, so no wetsuit surprises.
If you’re a beginner, sit this one out. If you’re an expert, mark Wednesday the 5th of August in your calendar, but be ready for a big, powerful, and potentially overwhelming swell.
Rusty.
Short Range ForecastMostly dry. Very mild (max 19°C on Sun afternoon, min 14°C on Sun night). Winds increasing (calm on Fri night, fresh winds from the WNW by Sun morning). | Days 4-6 Weather SummarySome drizzle, heaviest during Tue afternoon. Warm (max 23°C on Thu afternoon, min 16°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | |||||||||||||||
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 4 | W 4 | WSW 6 | W 7 | W 7 | W 6 | W 7 | WSW 6 | W 6 | W 6 | W 5 | W 5 | W 11 | W 10 | W 10 | W 8 | W 5 | W 9 | SW 4 | SW 6 | WSW 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 6 | 24 | 119 | 181 | 187 | 97 | 70 | 55 | 17 | 23 | 13 | 2 | 2 | 2 | 8 | 10 | 11 | 6 | 17 | 92 | 444 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | cross | cross | cross-off | cross | cross-on | on | cross-on | cross | cross-off | cross | cross | cross-off | cross-off | cross-on | cross-off | off | glassy | cross-off |
High Tide | 4:19PM5.96m | 4:51AM6.02m | 5:18PM6.29m | 5:43AM6.38m | 6:05PM6.72m | 6:26AM6.77m | 6:46PM7.16m | 7:04AM7.15m | 7:22PM7.55m | 7:40AM7.47m | 7:57PM7.87m | 8:14AM7.70m | 8:30PM8.07m | ||||||||
Low Tide | 9:58AM2.73m | 10:35PM2.61m | 11:02AM2.48m | 11:32PM2.28m | 11:53AM2.12m | 00:19AM1.89m | 12:35PM1.72m | 00:58AM1.50m | 1:12PM1.35m | 1:34AM1.18m | 1:46PM1.06m | 2:08AM0.93m | 2:18PM0.86m | 2:40AM0.78m | |||||||
 |  |  | | |  | | | |  |  | | | | | | | | | | | |
 | 5:28 | — | — | 5:30 | — | — | 5:31 | — | — | 5:33 | — | — | 5:35 | — | — | 5:35 | — | — | 5:37 | — | — |
 | — | — | 9:15 | — | — | 9:15 | — | — | 9:13 | — | — | 9:12 | — | — | 9:10 | — | — | 9:08 | — | — | 9:07 |
mm | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 18 | 18 | 17 | 18 | 19 | 18 | 16 | 18 | 18 | 20 | 22 | 22 | 20 | 20 | 18 | 20 | 23 | 20 | 20 | 27 | 25 |
Feels °C | 13 | 14 | 14 | 12 | 14 | 15 | 13 | 16 | 18 | 21 | 21 | 22 | 20 | 17 | 16 | 18 | 20 | 17 | 19 | 24 | 23 |
Swell 1 Height (m) Direction Period (s) | W 8 | — | — | — | — | W 6 | W 7 | — | W 6 | W 6 | W 5 | W 5 | W 5 | W 10 | W 10 | W 8 | W 7 | W 7 | W 9 | WSW 12 | WSW 8 |
| kJ | 1 | — | — | — | — | 97 | 70 | — | 17 | 23 | 13 | 2 | 2 | 2 | 8 | 10 | 4 | 4 | 2 | 14 | 444 |
Swell 2 Height (m) Direction Period (s) | SW 12 | — | — | — | — | — | — | — | W 9 | W 8 | W 8 | W 4 | W 11 | W 10 | W 6 | W 10 | W 10 | W 9 | W 12 | — | — |
| kJ | 6 | — | — | — | — | — | — | — | 6 | 1 | 1 | 1 | 2 | 2 | 1 | 2 | 2 | 2 | 3 | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | W 8 | W 8 | W 8 | — | — | — | W 9 | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | 1 | — | — | — | 6 | — | — | — |
Wind waves Height (m) Direction Period (s) | W 4 | W 4 | WSW 6 | W 7 | W 7 | — | — | WSW 6 | — | — | — | — | — | — | W 3 | — | W 5 | WSW 4 | SW 4 | SW 6 | — |
| kJ | 6 | 24 | 119 | 181 | 187 | — | — | 55 | — | — | — | — | — | — | 1 | — | 11 | 5 | 17 | 92 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 395 | 395 | 435 | 761 | 358 | 0 | 1 | 139 | 81 | 126 | 118 | 125 | 181 | 195 | 181 | 195 | 195 | 180 | 48 | 0 | 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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