Surf Forecasts:
Mewslade Bay surf forecast from 4 Aug 2026:
- Best quality surf: Sunday 9 Aug, 7AM (local time) - 3ft (0.9m), 7s period, WSW swell with glassy winds.
- Most powerful swell: Wednesday 5 Aug, 4PM (local time) - 5ft (1.6m), 7s period, WSW swell with 254 kJ wave energy.
- Next surfable swell (1★+): Sunday 9 Aug, 7AM (local time) - 3ft (0.9m), 7s 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 Sunday (Aug 09) at 7AM. The primary swell is predicted to be 0.9m and 7s period with a secondary swell of 0.1m and 12s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Mewslade Bay in the next 16 days are 1.6m 7s and forecast to arrive on Wednesday (Aug 05) at 4PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Monday (Aug 10) at 4AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Sun 9th Aug) | 3ft (0.9m) 7s |
| Best Surf | 7AM (Sun 9th Aug) | 3ft (0.9m) 7s |
| Most Powerful | 4PM (Wed 5th Aug) | 5ft (1.6m) 7s |
Table - best surf conditions forecast for Mewslade Bay over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s take a long, hard look at what’s coming up for Mewslade Bay. I gotta be straight with you – the next couple of weeks are looking pretty grim. There’s a massive gap of nothing worthwhile before we finally see a glimmer of hope.
The overall pattern is one of persistent onshore and cross-shore winds, mixed with very weak swell. The water is currently running at 67°, which is a whopping 6° warmer than usual for this time of year – that’s very unusual, so at least you won’t be freezing your bits off waiting for a set.
We’re looking at a dead run from now, all the way through to the morning of August 15th. That’s nearly two weeks of poor surf conditions. The wind is mostly from the SW, W, and WNW, smashing the surface up. The swell is tiny, often under 3 ft, with short periods under 8 seconds. The combined energy is weak, barely cracking 100 (173) on the best of the bad days, and mostly sitting in the low double digits. It’s not worth paddling out for.
Then, on the morning of Saturday, August 15th, things finally look up. The wind swings around to a light NW breeze, going cross-offshore. That’s the first real sign of clean conditions we’ve seen. The swell bumps up to 4 ft from the WSW with a period of 8 seconds. The combined energy hits 217, which is moderate. The forecast says “expect good surf conditions.” This is the standout of the entire run. The break is exposed to SW swells, so that WSW direction is a good match. The morning will see clean, lined-up waves, but be aware that crowds are possible here. The water is still warm, so that’s a bonus.
That Saturday morning is your window. The afternoon sees the wind shift back onshore, and the following days go right back to the same old story of small, messy, wind-affected junk. After that, it’s back to tiny waves and bad wind until the 19th, with nothing worth chasing.
So, to sum it up: don’t bother for the first two weeks. Mark your calendar for the morning of August 15th, get down to Mewslade Bay early, and enjoy that brief window of clean, waist-to-chest high swell. It’s the only game in town.
Rusty.
Short Range ForecastMostly dry. Very mild (max 19°C on Tue morning, min 13°C on Wed night). Winds decreasing (fresh winds from the WNW on Wed morning, calm by Thu night). | Days 4-6 Weather SummaryMostly dry. Very mild (max 19°C on Sun afternoon, min 13°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | |||||||||||||||
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 7 | SW 7 | WSW 6 | WSW 7 | WSW 7 | WSW 6 | W 6 | WSW 6 | W 5 | W 9 | WSW 5 | W 9 | W 9 | WSW 4 | W 5 | WSW 7 | WSW 7 | W 6 | W 6 | W 6 | W 5 |
Wave Graph  | |||||||||||||||||||||
 kJ | 173 | 132 | 132 | 240 | 254 | 119 | 78 | 54 | 14 | 7 | 8 | 6 | 2 | 3 | 12 | 75 | 75 | 35 | 30 | 22 | 4 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | cross | cross-on | cross | cross | cross | cross-on | cross-on | cross-on | cross | on | cross | cross-off | cross-on | cross-on | cross-off | cross-off | cross | cross-off |
High Tide | 10:35AM7.56m | 10:55PM7.62m | 11:18AM7.25m | 11:41PM7.22m | 12:09PM6.87m | 00:38AM6.78m | 1:13PM6.52m | 1:52AM6.45m | 2:35PM6.38m | 3:19AM6.43m | 3:59PM6.64m | 4:38AM6.79m | 5:10PM7.20m | ||||||||
Low Tide | 4:33PM1.13m | 4:58AM1.24m | 5:17PM1.45m | 5:45AM1.61m | 6:11PM1.84m | 6:46AM2.01m | 7:22PM2.17m | 8:06AM2.27m | 8:52PM2.25m | 9:36AM2.19m | 10:20PM1.94m | 10:54AM1.77m | 11:30PM1.39m | ||||||||
 |  |  | | | | | | | | | | | | | | | | | | | |
 | 5:43 | — | — | 5:45 | — | — | 5:47 | — | — | 5:48 | — | — | 5:50 | — | — | 5:52 | — | — | 5:52 | — | — |
 | — | — | 9:00 | — | 8:59 | — | — | 8:57 | — | — | 8:55 | — | — | 8:53 | — | — | 8:52 | — | — | 8:50 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 19 | 19 | 18 | 16 | 17 | 17 | 15 | 16 | 16 | 17 | 17 | 16 | 16 | 17 | 17 | 18 | 19 | 18 | 19 | 21 | 19 |
Feels °C | 17 | 17 | 16 | 10 | 11 | 12 | 10 | 10 | 13 | 14 | 14 | 14 | 14 | 15 | 16 | 16 | 17 | 17 | 15 | 17 | 16 |
Swell 1 Height (m) Direction Period (s) | — | W 15 | — | W 13 | SW 13 | W 11 | W 6 | W 10 | W 5 | WSW 5 | W 9 | WSW 4 | W 4 | W 9 | W 5 | SW 12 | WSW 7 | W 6 | W 6 | W 6 | W 5 |
| kJ | — | 4 | — | 4 | 7 | 2 | 78 | 8 | 14 | 5 | 6 | 6 | 1 | 2 | 12 | 6 | 75 | 27 | 30 | 22 | 4 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | SW 13 | W 10 | SW 12 | W 10 | W 9 | SW 12 | W 9 | W 9 | — | WSW 8 | — | SW 12 | — | — | — | WSW 7 |
| kJ | — | — | — | — | — | 7 | 2 | 6 | 7 | 7 | 6 | 6 | 2 | — | 7 | — | 6 | — | — | — | 4 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | SW 13 | — | SW 12 | SW 12 | — | SW 12 | W 5 | — | — | — | — | — | — | — | W 8 |
| kJ | — | — | — | — | — | — | 6 | — | 6 | 6 | — | 5 | 1 | — | — | — | — | — | — | — | 1 |
Wind waves Height (m) Direction Period (s) | WSW 7 | SW 7 | WSW 6 | WSW 7 | WSW 7 | WSW 6 | — | WSW 6 | — | — | WSW 5 | — | — | WSW 4 | — | WSW 7 | — | W 6 | NNW 3 | — | N 3 |
| kJ | 173 | 132 | 132 | 240 | 254 | 119 | — | 54 | — | — | 8 | — | — | 3 | — | 75 | — | 35 | 2 | — | 1 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 124 | 367 | 281 | 358 | 358 | 322 | 195 | 398 | 364 | 366 | 367 | 378 | 408 | 195 | 125 | 1 | 1440 | 0 | 181 | 377 | 180 |
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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