Surf Forecasts:
Mewslade Bay surf forecast from 10 Aug 2026:
- Best quality surf: Wednesday 12 Aug, 4PM (local time) - 2.5ft (0.7m), 10s period, WSW swell with cross-offshore winds.
- Most powerful swell: Thursday 13 Aug, 10AM (local time) - 3ft (0.9m), 10s period, WSW swell with 187 kJ wave energy.
- Next surfable swell (1★+): Wednesday 12 Aug, 4PM (local time) - 2.5ft (0.7m), 10s period with WSW 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 Wednesday (Aug 12) at 4PM. The primary swell is predicted to be 0.7m and 10s period. 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 0.9m 10s and forecast to arrive on Thursday (Aug 13) at 10AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Wednesday (Aug 12) at 4PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4PM (Wed 12th Aug) | 2.5ft (0.7m) 10s |
| Best Surf | 4PM (Wed 12th Aug) | 2.5ft (0.7m) 10s |
| Most Powerful | 10AM (Thu 13th Aug) | 3ft (0.9m) 10s |
Table - best surf conditions forecast for Mewslade Bay over the next 16 days.
The Lowdown
Alright, Rusty here. Let's get into it for Mewslade Bay.
Right off the bat, I gotta be straight with you – the next week and a half is looking pretty bleak. We’ve got a long dry spell ahead. From now until the morning of Saturday the 23rd of August, there’s just nothing worth paddling out for. The waves are tiny, the energy is weak, and the conditions are messy. It’s a proper gap in the surf, so don’t bother checking the cam until then.
The one real standout, and the only time I’m getting excited, is the morning of Sunday the 23rd of August. That’s our window. Mewslade Bay is going to wake up to a solid 7ft swell from the west, with a period of 9 seconds. The combined wave energy is a very strong 653 – that’s proper power. And the wind? Light offshore from the northwest at 15 mph, which is going to keep the faces clean and the lines tidy. The forecast says "expect very good surf conditions," and I believe it. This is a big, powerful swell, well over 8ft, so this one is for the experienced crew only. Beginners, sit this one out. The west swell direction is a nice match for the bay’s open exposure, and with the offshore flow, it’s going to be a classic morning. Expect some crowds, though, because this spot can get busy when it’s on.
The water temperature is sitting at 68°F, which is a massive 6° warmer than normal for this time of year. That’s very unusual, so you can leave the thick wetsuit at home. The water is seriously warm.
After that Sunday morning pulse, the swell drops off fast. By Sunday afternoon, the wind swings onshore and the quality goes to hell. Monday the 24th and Tuesday the 25th are back to small, weak, and messy. The 25th has a couple of long-period swells (15-16 seconds), but with onshore wind and low energy (69 max), it’s not going to amount to anything. So, mark your calendar for the 23rd of August, get up early, and get your share before it’s gone.
Rusty.
Short Range ForecastMostly dry. Warm (max 30°C on Wed afternoon, min 15°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 25°C on Thu morning, min 14°C on Sat night). Mainly fresh winds. | ||||||||||||||||||||
Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | |||||||||||||||
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) | WSW 6 | SW 6 | SW 7 | W 8 | W 10 | WSW 11 | WSW 10 | WSW 10 | WSW 9 | WSW 10 | WSW 10 | WSW 10 | W 9 | W 6 | WSW 8 | W 8 | W 7 | W 8 | WSW 7 | WSW 7 | WSW 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 34 | 10 | 7 | 5 | 7 | 25 | 78 | 96 | 119 | 187 | 163 | 154 | 57 | 46 | 68 | 55 | 54 | 29 | 18 | 18 | 10 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross-off | cross | cross | cross | cross | cross-off | cross-off | cross | cross | cross-on | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross | cross-off |
High Tide | 5:10PM7.20m | 5:42AM7.35m | 6:08PM7.85m | 6:35AM7.89m | 6:57PM8.42m | 7:21AM8.31m | 7:41PM8.80m | 8:04AM8.54m | 8:23PM8.94m | 8:44AM8.55m | 9:02PM8.81m | 9:22AM8.35m | 9:40PM8.46m | ||||||||
Low Tide | 10:54AM1.77m | 11:30PM1.39m | 11:55AM1.22m | 00:26AM0.80m | 12:45PM0.69m | 1:13AM0.33m | 1:30PM0.31m | 1:56AM0.05m | 2:10PM0.12m | 2:35AM0.00m | 2:49PM0.14m | 3:12AM0.17m | 3:25PM0.37m | 3:48AM0.53m | |||||||
 |  |  | | | | | | | | |  | | | | | | | | | | |
 | 5:52 | — | — | 5:54 | — | — | 5:56 | — | — | 5:58 | — | — | 5:58 | — | — | 6:01 | — | — | 6:03 | — | — |
 | — | 8:50 | — | — | 8:47 | — | — | 8:45 | — | — | 8:44 | — | — | 8:42 | — | — | 8:39 | — | — | 8:37 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 19 | 21 | 19 | 22 | 26 | 23 | 26 | 30 | 27 | 25 | 24 | 19 | 20 | 20 | 17 | 19 | 20 | 16 | 17 | 20 | 17 |
Feels °C | 16 | 17 | 16 | 20 | 23 | 21 | 22 | 27 | 25 | 21 | 20 | 19 | 17 | 16 | 14 | 16 | 15 | 13 | 15 | 15 | 14 |
Swell 1 Height (m) Direction Period (s) | WSW 6 | SW 6 | SW 7 | WSW 6 | W 10 | WSW 11 | WSW 10 | WSW 10 | WSW 9 | WSW 10 | WSW 10 | WSW 10 | WSW 6 | W 9 | WSW 8 | W 8 | W 7 | W 8 | WSW 7 | WSW 7 | WSW 7 |
| kJ | 34 | 10 | 7 | 4 | 7 | 25 | 78 | 96 | 119 | 187 | 163 | 154 | 46 | 38 | 68 | 55 | 54 | 29 | 18 | 18 | 10 |
Swell 2 Height (m) Direction Period (s) | W 8 | W 5 | W 4 | W 8 | SW 6 | W 9 | SW 6 | — | — | — | — | — | W 9 | — | — | — | — | — | — | — | — |
| kJ | 1 | 5 | 2 | 5 | 2 | 6 | 1 | — | — | — | — | — | 57 | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | W 8 | NNW 3 | W 10 | W 13 | SW 6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | 1 | 1 | 2 | 3 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | N 2 | — | — | ESE 3 | ESE 3 | — | ESE 2 | E 3 | — | — | — | — | — | W 6 | — | NNW 3 | NW 3 | NNW 3 | N 3 | NNW 4 | NNW 3 |
| kJ | 1 | — | — | 4 | 1 | — | 1 | 2 | — | — | — | — | — | 46 | — | 3 | 3 | 3 | 1 | 1 | 1 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 180 | 181 | 125 | 366 | 379 | 4 | 13 | 0 | 0 | 0 | 358 | 1 | 0 | 299 | 1 | 18 | 412 | 32 | 180 | 381 | 367 |
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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