
Surf Forecasts:
Mewslade Bay surf forecast from 5 Sep 2026:
- Best quality surf: Saturday 5 Sep, 10PM (local time) - 2.5ft (0.7m), 10s period, WSW swell with glassy winds.
- Most powerful swell: Monday 7 Sep, 7PM (local time) - 7.5ft (2.3m), 12s period, WSW swell with 1,480 kJ wave energy.
- Next surfable swell (1★+): Saturday 5 Sep, 10PM (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 Saturday (Sep 05) at 10PM. The primary swell is predicted to be 0.7m and 10s period with a secondary swell of 0.1m and 13s. 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 2.3m 12s and forecast to arrive on Monday (Sep 07) at 7PM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Sat 5th Sep) | 2.5ft (0.7m) 10s |
| Best Surf | 10PM (Sat 5th Sep) | 2.5ft (0.7m) 10s |
| Most Powerful | 7PM (Mon 7th Sep) | 7.5ft (2.3m) 12s |
Table - best surf conditions forecast for Mewslade Bay over the next 16 days.
The Lowdown
Right then, let’s have a look at what’s on the cards for Mewslade Bay. I’m not gonna sugar-coat it; this is a rough run. The forecast is showing a whole lot of "poor surf conditions" right across the board with zero scores, so there’s no standout session to get excited about. We’re looking at a 16-day window with no real recommendations. The first few days are a write-off and honestly, it doesn’t get much better. There’s a bit of a gap here with nothing worth paddling out for, and given the pattern, this blank run is pretty normal for the area when the wind and swell just don’t line up.
Let’s talk about the water. When we do look at the first bit of swell, the water temperature is sitting at 66°F with an anomaly of 5°F, which is much warmer than normal for this time of year. That’s a notable bump, but it doesn’t mean much if the waves are junk.
We start off Saturday, September 5th. Morning has a 3ft swell from the west with a weak 7-second period and a combined energy of just 153 (weak energy). Wind is WNW 15 km/h (9 mph), so it’s a cross-shore breeze creating a slight cross-chop. Afternoon drops to 3ft, still choppy, and it’s all poor conditions. Sunday the 6th is even smaller, with 2ft and 3ft, period dropping to 6 seconds, and onshore winds making it messy. Not worth a look.
Monday the 7th brings a jump in size to 6ft in the morning and 7ft in the afternoon, with a longer 13-second period, so there’s some groundswell energy. The combined energy hits 1590 (moderate wave energy) in the morning. But the wind is cross-onshore at 25-30 km/h (16-19 mph), making it lumpy and choppy. That swell size is over 5ft, so it’s getting too big for beginners, but the wind is trashing it. This would be more interesting for kite surfing than paddle surfing given the poor quality and strong wind.
Tuesday the 8th is still 5ft with a 10-second period, but the wind stays fresh cross-shore and lumpy. Energy drops through the day. Not good.
Wednesday the 9th sees a drop to 4ft, and the wind finally goes cross-offshore from the NW at 25 km/h (16 mph), giving us clean conditions. The period is short at 7 seconds though, and the energy is only 130 (weak). It’s clean, but there’s just not enough juice.
From Thursday the 10th right through to the end of the period on September 20th, it’s a mix of onshore winds, rain, and tiny surf. Thursday the 10th has 6ft but with a 6-second period and fresh onshore wind – lumpy junk. Friday the 11th is cleaner with cross-offshore winds, but the swell is only 6ft with a 6-second period, so it’s bumpy and short period, not worth the drive. The rest of the days are tiny, from 2ft down to 0.3ft, with periods all over the place. Even though some mornings are clean with offshore winds, the swell is just pathetic. On the 19th and 20th, there’s a brief whisper of a long-period swell from the SW at 14-16 seconds, but it’s only 0.3ft, so it’s a tease.
Honestly, there’s nothing here. The best you could hope for is a clean but tiny wave on September 9th or 11th, but it’s not worth getting wet for. Keep the board in the truck and wait for the next proper swell.
Rusty.
Short Range ForecastLight rain (total 7mm), mostly falling on Mon night. Warm (max 22°C on Sun afternoon, min 15°C on Sat morning). Winds increasing (calm on Sat night, fresh winds from the WSW by Mon night). | Days 4-6 Weather SummaryLight rain (total 6mm), mostly falling on Wed night. Very mild (max 18°C on Thu morning, min 13°C on Tue night). Winds increasing (moderate winds from the W on Wed morning, strong winds from the SW by Wed night). | ||||||||||||||||||||
Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | |||||||||||||||
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 7 | WSW 7 | WSW 9 | WSW 6 | WSW 6 | WSW 7 | WSW 13 | WSW 13 | WSW 12 | WSW 10 | WSW 10 | W 6 | W 7 | W 6 | WSW 7 | WSW 6 | WSW 8 | WSW 8 | W 6 | W 7 | W 8 |
Wave Graph | |||||||||||||||||||||
92 | 97 | 86 | 19 | 57 | 111 | 1229 | 1275 | 1237 | 523 | 435 | 132 | 130 | 81 | 94 | 286 | 393 | 346 | 267 | 282 | 263 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross-off | cross-on | cross-on | cross-on | cross-on | cross | cross-off | cross-off | cross |
High Tide | 12:52PM6.37m | 1:38AM6.14m | 2:24PM6.19m | 3:16AM6.18m | 3:56PM6.54m | 4:36AM6.67m | 5:04PM7.20m | 5:34AM7.31m | 5:56PM7.89m | 6:21AM7.90m | 6:40PM8.44m | 7:02AM8.34m | 7:20PM8.77m | ||||||||
Low Tide | 7:06PM2.39m | 7:55AM2.58m | 8:54PM2.45m | 9:38AM2.39m | 10:25PM1.99m | 10:53AM1.83m | 11:27PM1.35m | 11:47AM1.20m | 00:15AM0.74m | 12:31PM0.65m | 00:56AM0.29m | 1:10PM0.27m | 1:33AM0.05m | ||||||||
6:35 | — | — | 6:35 | — | — | 6:37 | — | — | 6:39 | — | — | 6:41 | — | — | 6:43 | — | — | 6:43 | — | — | |
— | 7:54 | — | — | 7:52 | — | — | 7:51 | — | — | 7:49 | — | — | 7:45 | — | — | 7:44 | — | — | 7:42 | — | |
mm | — | — | 1 | — | — | — | — | — | 6 | — | — | — | — | — | 5 | 1 | — | — | — | — | — |
Temp °C | 15 | 15 | 16 | 20 | 22 | 18 | 17 | 17 | 16 | 16 | 16 | 16 | 15 | 15 | 16 | 18 | 18 | 17 | 15 | 17 | 16 |
Feels °C | 12 | 12 | 13 | 17 | 19 | 16 | 12 | 12 | 10 | 10 | 10 | 10 | 11 | 11 | 11 | 14 | 13 | 11 | 8 | 12 | 12 |
Swell 1 Height (m) Direction Period (s) | W 7 | WSW 7 | WSW 9 | WSW 6 | — | WSW 16 | W 13 | — | W 8 | W 10 | — | W 9 | W 7 | WSW 8 | WSW 7 | W 12 | — | W 8 | — | — | — |
92 | 97 | 86 | 19 | — | 53 | 361 | — | 314 | 434 | — | 43 | 130 | 22 | 18 | 3 | — | 279 | — | — | — | |
Swell 2 Height (m) Direction Period (s) | W 9 | SW 13 | SW 13 | WSW 9 | SW 13 | SW 12 | — | — | W 11 | — | — | — | — | — | — | — | — | — | — | — | — |
54 | 7 | 7 | 16 | 6 | 6 | — | — | 297 | — | — | — | — | — | — | — | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | SW 14 | — | — | SW 13 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
7 | — | — | 7 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | SE 2 | WSW 6 | WSW 7 | WSW 13 | WSW 13 | WSW 12 | WSW 10 | WSW 10 | W 6 | — | W 6 | WSW 7 | WSW 6 | WSW 8 | WSW 8 | W 6 | W 7 | W 8 |
— | — | — | 1 | 57 | 111 | 1229 | 1275 | 1237 | 523 | 435 | 132 | — | 81 | 94 | 286 | 393 | 346 | 267 | 282 | 263 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 104 | 2 | 261 | 172 | 124 | 358 | 358 | 33 | 134 | 358 | 31 | 154 | 322 | 322 | 260 | 322 | 403 | 358 | 358 | 12 |
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.










