Surf Forecasts:
Mewslade Bay surf forecast from 24 Aug 2026:
- Most powerful swell: Monday 31 Aug, 1AM (local time) - 8ft (2.5m), 8s period, WSW swell with 979 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 2.5m 8s and forecast to arrive on Monday (Aug 31) at 1AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Monday (Aug 24) at 10PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 1AM (Mon 31st Aug) | 8ft (2.5m) 8s |
Table - best surf conditions forecast for Mewslade Bay over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s take a look at what Mewslade Bay is cooking up over the next couple of weeks.
Straight away, I’ll tell you – the first week is a bit of a dud for a proper surf. We’ve got a long stretch from Monday the 24th of August all the way to the end of the month with nothing but poor conditions. The wind is mostly cross or onshore, and the swell is all over the shop. The water’s sitting at 68°F, which is a huge 6°F warmer than usual – that’s really weird for this time of year, feels like a heated pool.
Monday morning the 24th, there’s a tiny 1ft SW swell, but it’s a cross-off wind and the energy is weak. Not worth the wetsuit. That pattern of small, messy surf just keeps rolling through the week. By Wednesday afternoon the 26th, we get a moment of glassy conditions with a 1ft W swell, but it’s still too small to get excited about – the energy is only 17. Thursday the 27th brings a bit of a bump with a 4ft SW swell in the afternoon, but it’s cross-on and choppy, so no thanks.
Friday the 28th sees a bit more push with a 5ft WSW swell in the morning, and the wind is cross-off, keeping it clean. The energy reads 202, so there’s moderate juice, but it’s still a “poor surf conditions” call. The wind is a fresh 19 mph, so it’s not going to be a smooth ride.
Things get a bit rowdy over the weekend. Saturday the 29th afternoon, we’ve got a 10ft WSW swell coming in, but it’s a fresh cross-onshore wind at 22 mph, making it lumpy and messy. That’s big enough for experts only, but the wind is just ruining it. Sunday the 30th and Monday the 31st continue with solid swell – 6ft and 8ft – but the wind stays on it, so it’s all a bit of a battle.
Now, after that rough first week, there’s a little glimmer. Wednesday the 2nd of September morning is where we might get a look. The forecast shows a 8ft WSW swell with a clean cross-off wind from the NNW at 9 mph. The energy is a solid 565, and the wave comment says “expect very good surf conditions.” This is the standout of the run. The wind is offshore for Mewslade, which is a massive positive – it’ll be clean. That swell is over 8ft, so this is strictly for the experienced crew. The period is 7 seconds, so it’s a bit of a windswell, but with that offshore breeze, it should hold shape.
Thursday the 3rd of September morning is worth a mention too. We’ve got a 4ft WSW swell, and the wind is glassy – 3 mph from the east. It’s glassy, clean, and the energy is moderate at 164. It’s not the biggest, but it’ll be a fun, user-friendly size for intermediates. The crowds at Mewslade can be a factor sometimes, so get in early for that one.
The second week starts to fade again. Friday the 4th and Saturday the 5th have some swell, but the wind gets messy. Saturday morning the 5th of September has a 5ft WSW swell and glassy conditions again – that’s another decent window with a energy of 232. Good for a session, but not the best of the best.
Towards the end of the run, Monday the 7th afternoon sees a tiny 1ft WSW swell with a very long 17-second period, but the energy is only 144 and the wind is onshore. That long period at a beach break like Mewslade can make it close out straight, so it’s a pass.
The very last entry, Tuesday the 8th of September, shows a massive 7ft WSW swell with a 17-second period and an energy of 2547 – that’s a serious amount of power. But the wind is straight onshore at 19 mph, so it’s going to be a washing machine. For the die-hard experts only, and even then, it’s a risk.
Overall, the best on offer is Wednesday the 2nd of September morning – that’s your pick. Clean, solid, and powerful. The Thursday the 3rd and Saturday the 5th mornings are your backup options for a cleaner, smaller wave. The rest of the time, you’re better off checking the forecast again or finding something else to do.
Rusty.
Short Range ForecastModerate rain (total 14mm), heaviest on Wed night. Warm (max 24°C on Mon afternoon, min 15°C on Mon night). Winds decreasing (fresh winds from the E on Mon night, calm by Wed afternoon). | Days 4-6 Weather SummaryModerate rain (total 11mm), heaviest on Sat morning. Warm (max 20°C on Thu morning, min 16°C on Thu night). Mainly fresh winds. | ||||||||||||||||||||
Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | |||||||||||||||
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) | SW 9 | W 9 | W 9 | W 8 | W 8 | W 10 | W 9 | W 8 | W 8 | SE 4 | SW 6 | SW 7 | WSW 7 | W 7 | WSW 7 | WSW 6 | WSW 7 | WSW 8 | WSW 8 | SW 7 | WSW 8 |
Wave Graph | |||||||||||||||||||||
14 | 7 | 7 | 7 | 5 | 17 | 13 | 12 | 10 | 13 | 124 | 489 | 202 | 142 | 73 | 87 | 856 | 480 | 245 | 383 | 979 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | off | cross-on | cross-on | glassy | cross | cross-on | cross-on | cross-on | cross-off | cross-off | cross-on | on | cross-on | cross | on | cross-on | cross-on |
High Tide | 4:59PM6.09m | 5:25AM6.23m | 5:45PM6.67m | 6:06AM6.78m | 6:23PM7.25m | 6:42AM7.30m | 6:58PM7.78m | 7:15AM7.75m | 7:31PM8.20m | 7:48AM8.10m | 8:03PM8.47m | 8:20AM8.30m | 8:36PM8.58m | ||||||||
Low Tide | 10:45AM2.71m | 11:17PM2.42m | 11:36AM2.19m | 00:01AM1.88m | 12:15PM1.66m | 00:37AM1.35m | 12:49PM1.17m | 1:10AM0.90m | 1:21PM0.77m | 1:41AM0.55m | 1:52PM0.48m | 2:11AM0.34m | 2:22PM0.33m | 2:42AM0.28m | |||||||
6:15 | — | — | 6:16 | — | — | 6:18 | — | — | 6:20 | — | — | 6:22 | — | — | 6:22 | — | — | 6:24 | — | — | |
— | 8:22 | — | — | 8:20 | — | — | 8:17 | — | — | 8:15 | — | — | 8:13 | — | — | 8:10 | — | — | 8:08 | — | |
mm | — | — | — | — | — | — | — | 1 | 13 | 1 | 1 | — | — | — | — | 8 | 1 | — | 1 | 5 | 4 |
Temp °C | 20 | 24 | 20 | 19 | 23 | 19 | 18 | 21 | 20 | 20 | 19 | 18 | 19 | 20 | 18 | 18 | 18 | 17 | 18 | 17 | 17 |
Feels °C | 15 | 19 | 15 | 16 | 21 | 18 | 19 | 21 | 20 | 18 | 17 | 14 | 18 | 15 | 16 | 15 | 13 | 11 | 13 | 12 | 10 |
Swell 1 Height (m) Direction Period (s) | SW 9 | W 9 | W 9 | W 8 | SW 8 | W 10 | W 9 | W 8 | W 8 | W 7 | S 12 | WSW 7 | WSW 7 | — | — | WSW 6 | — | W 8 | WSW 8 | — | — |
14 | 6 | 6 | 5 | 3 | 17 | 13 | 12 | 10 | 10 | 3 | 138 | 202 | — | — | 87 | — | 373 | 245 | — | — | |
Swell 2 Height (m) Direction Period (s) | SW 14 | SW 9 | SW 13 | SW 13 | W 8 | SSW 8 | SSW 8 | SSW 7 | SW 7 | SW 7 | — | — | — | — | — | — | — | — | — | — | — |
8 | 3 | 7 | 7 | 5 | 7 | 6 | 5 | 2 | 2 | — | — | — | — | — | — | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | W 9 | SW 14 | SW 9 | SW 8 | W 10 | SW 13 | SW 13 | — | SW 12 | SW 12 | — | — | — | — | — | — | — | — | — | — | — |
2 | 7 | 3 | 3 | 2 | 7 | 6 | — | 6 | 6 | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | E 3 | E 4 | E 4 | E 4 | E 3 | SE 3 | SE 3 | — | — | SE 4 | SW 6 | SW 7 | N 2 | W 7 | WSW 7 | S 4 | WSW 7 | WSW 8 | — | SW 7 | WSW 8 |
7 | 10 | 14 | 14 | 4 | 2 | 1 | — | — | 13 | 124 | 489 | 1 | 142 | 73 | 18 | 856 | 480 | — | 383 | 979 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 377 | 359 | 270 | 125 | 78 | 48 | 64 | 125 | 377 | 288 | 260 | 6 | 13 | 194 | 195 | 365 | 141 | 135 | 418 | 322 | 435 |
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.











