Surf Forecasts:
Mewslade Bay surf forecast from 19 Aug 2026:
- Best quality surf: Wednesday 26 Aug, 7AM (local time) - 4.5ft (1.4m), 8s period, WSW swell with cross-offshore winds.
- Most powerful swell: Thursday 20 Aug, 1AM (local time) - 5ft (1.6m), 7s period, WSW swell with 276 kJ wave energy.
- Next surfable swell (1★+): Friday 21 Aug, 4AM (local time) - 2.5ft (0.7m), 9s 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 Friday (Aug 21) at 4AM. The primary swell is predicted to be 0.7m and 9s period with a secondary swell of 0.1m and 14s. The wind is predicted to be offshore 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 Thursday (Aug 20) at 1AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Thursday (Aug 20) at 10PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Fri 21st Aug) | 2.5ft (0.7m) 9s |
| Best Surf | 7AM (Wed 26th Aug) | 4.5ft (1.4m) 8s |
| Most Powerful | 1AM (Thu 20th 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 have a look at the next 16 days for Mewslade Bay.
To be straight with you, the outlook is pretty bleak. We’ve got a long stretch of poor conditions ahead, with only a few fleeting moments that might get you out. The water is much warmer than normal for this time of year, coming in at a balmy 69°, a solid 8° above average, which is very unusual.
The first real chance of anything surfable doesn’t show up until Wednesday, 26th August. The morning is the pick of the bunch, with glassy conditions and a 3 ft swell from the WSW at 8 seconds. The combined energy is 131 (moderate). It’s surfable, but very ordinary. The afternoon sees the swell bump up to 5 ft (WSW, 7 secs, 349 energy), but a cross-shore wind starts to mess it up.
After that, we’re back into a long run of poor surf all the way through to the end of the month. The wind is often onshore, cross-shore, or just too strong.
Come Monday, 31st August, the morning offers a clean 5 ft swell from the WSW (9 secs, 311 energy), but with a fresh 19 mph cross-off wind, it’s going to be a battle. The afternoon sees the biggest swell of the period at 6 ft and 640 energy (strong), but it’s coming with a fresh cross-shore wind and lumpy conditions, making it tricky. The period is 10 seconds, so it’s a bit short for real quality.
The very end of the run, on Wednesday, 2nd September, shows a 5 ft swell from the W (8 secs, 283 energy) with a light onshore wind, but it’s rated as marginal. Honestly, this is a tough stretch. If you’re desperate, the glassy morning of the 26th is your best bet, but don’t expect much.
Rusty.
Short Range ForecastLight rain (total 6mm), mostly falling on Wed night. Very mild (max 18°C on Wed afternoon, min 12°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 22°C on Mon afternoon, min 13°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | |||||||||||||||
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 | WSW 5 | WSW 7 | WSW 7 | WSW 7 | WSW 9 | WSW 8 | WSW 8 | WSW 8 | WSW 10 | WSW 10 | WSW 9 | WSW 9 | WSW 9 | W 8 | WSW 9 | WSW 9 | WSW 8 | W 8 | WSW 8 | W 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 45 | 61 | 276 | 269 | 181 | 132 | 53 | 22 | 23 | 18 | 18 | 16 | 15 | 8 | 8 | 8 | 8 | 7 | 7 | 7 | 43 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross | cross | cross-off | cross-off | cross-off | cross | off | off | cross-off | off | off | cross | off | cross | glassy | cross-off | cross-off | cross-on | cross |
High Tide | 11:13AM6.91m | 11:35PM6.64m | 11:56AM6.32m | 00:23AM6.02m | 12:52PM5.80m | 1:31AM5.54m | 2:16PM5.50m | 3:07AM5.42m | 3:51PM5.63m | 4:30AM5.72m | 4:59PM6.09m | 5:25AM6.23m | 5:45PM6.67m | ||||||||
Low Tide | 5:17PM1.85m | 5:39AM2.19m | 6:04PM2.43m | 6:31AM2.73m | 7:09PM2.91m | 7:50AM3.10m | 8:44PM3.11m | 9:29AM3.09m | 10:16PM2.89m | 10:45AM2.71m | 11:17PM2.42m | 11:36AM2.19m | 00:01AM1.88m | ||||||||
 |  |  |  | |  | | | | | | | | | | | |  | | |  | |
 | 6:07 | — | — | 6:09 | — | — | 6:11 | — | — | 6:11 | — | — | 6:13 | — | — | 6:15 | — | — | 6:16 | — | — |
 | — | 8:31 | — | — | 8:30 | — | — | 8:28 | — | — | 8:25 | — | — | 8:23 | — | — | 8:22 | — | — | 8:20 | — |
mm | — | — | 3 | 2 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 7 |
Temp °C | 17 | 18 | 17 | 16 | 17 | 15 | 15 | 17 | 14 | 16 | 18 | 15 | 17 | 19 | 19 | 20 | 22 | 20 | 17 | 20 | 17 |
Feels °C | 15 | 13 | 13 | 11 | 12 | 10 | 12 | 13 | 11 | 15 | 15 | 11 | 15 | 16 | 15 | 16 | 20 | 16 | 16 | 17 | 15 |
Swell 1 Height (m) Direction Period (s) | WSW 6 | SW 16 | SW 16 | WSW 7 | WSW 7 | WSW 9 | WSW 8 | WSW 6 | WSW 8 | WSW 10 | WSW 10 | WSW 9 | WSW 9 | WSW 9 | NNW 3 | WSW 9 | WSW 9 | WSW 8 | W 8 | WSW 8 | W 9 |
| kJ | 45 | 10 | 10 | 252 | 181 | 132 | 53 | 12 | 23 | 18 | 18 | 16 | 15 | 8 | 2 | 7 | 8 | 7 | 5 | 6 | 43 |
Swell 2 Height (m) Direction Period (s) | W 10 | — | SW 16 | SW 14 | SW 14 | SW 14 | SW 13 | WSW 8 | WNW 4 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | W 8 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 13 |
| kJ | 7 | — | 10 | 8 | 8 | 8 | 7 | 22 | 2 | 9 | 8 | 8 | 8 | 8 | 6 | 8 | 7 | 7 | 7 | 7 | 7 |
Swell 3 Height (m) Direction Period (s) | SW 16 | — | — | W 15 | — | W 9 | SW 16 | SW 13 | SW 16 | SW 15 | — | SW 12 | SW 14 | — | SW 14 | — | — | SW 13 | SW 13 | W 11 | — |
| kJ | 10 | — | — | 4 | — | 59 | 11 | 7 | 10 | 9 | — | 6 | 8 | — | 8 | — | — | 7 | 7 | 2 | — |
Wind waves Height (m) Direction Period (s) | — | WSW 5 | WSW 7 | W 7 | NW 4 | N 4 | NNW 4 | NW 3 | N 3 | N 4 | NW 4 | N 3 | — | — | — | — | ESE 3 | N 3 | — | — | SW 2 |
| kJ | — | 61 | 276 | 269 | 16 | 15 | 4 | 1 | 1 | 2 | 1 | 3 | — | — | — | — | 1 | 3 | — | — | 1 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 358 | 322 | 444 | 33 | 214 | 0 | 0 | 139 | 4 | 57 | 180 | 48 | 78 | 395 | 180 | 326 | 418 | 299 | 195 | 319 | 13 |
Best forecast wave conditions in Wales - Gower | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Mewslade Bay surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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.
Nearest