Surf Forecasts:
Mewslade Bay surf forecast from 9 Aug 2026:
- Best quality surf: Wednesday 12 Aug, 4PM (local time) - 2.5ft (0.8m), 10s period, WSW swell with glassy 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 (0.8m), 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 0.8m and 10s period with a secondary swell of 0.1m and 6s. 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 0.9m 10s and forecast to arrive on Thursday (Aug 13) at 10AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Saturday (Aug 15) at 7PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4PM (Wed 12th Aug) | 2.5ft (0.8m) 10s |
| Best Surf | 4PM (Wed 12th Aug) | 2.5ft (0.8m) 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 again. Let’s get those numbers in terms you might use if you grew up with feet and Fahrenheit.
Looking at Mewslade Bay, it’s a flat and frustrating stretch. The water is running about 68°F, which is a hell of a lot warmer than usual for the summer.
The first chance you get isn’t until Wednesday, August 12th. The afternoon of that day goes glassy, with a tiny 3ft swell from the WSW. The energy is weak as dishwater (106). It’s surfable, but barely.
Your best bet lands on Thursday, August 13th. A glassy morning with a 3ft swell from the WSW and a bit more energy at (187). Keep it clean, keep it small. If you want a slide, be there.
After that, the wind messes it up. The biggest day comes on the 20th with a 4ft swell, but the period is short and the energy is (147)—nothing special.
For beginners, the 4ft swell is about the limit, but the shape is poor. Intermediates will find it frustrating, and experts will look elsewhere. The gaps between any decent surf are long and depressing. There’s just not enough power or direction to make it happen.
Rusty.
Short Range ForecastMostly dry. Warm (max 22°C on Tue morning, min 15°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 29°C on Wed afternoon, min 17°C on Tue night). Wind will be generally light. | |||||||||||||||||||
Sat 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | ||||||||||||||
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 9 | WSW 7 | WSW 7 | SW 12 | W 4 | WSW 6 | SW 6 | SW 7 | ESE 3 | W 10 | WSW 11 | WSW 10 | WSW 10 | WSW 9 | WSW 10 | WSW 10 | WSW 10 | WSW 9 | W 9 | WSW 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 2 | 5 | 6 | 6 | 8 | 25 | 10 | 7 | 8 | 7 | 42 | 78 | 105 | 116 | 187 | 176 | 157 | 82 | 76 | 51 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | cross | cross-on | cross-off | cross-off | cross | cross-off | cross | cross | cross | cross | glassy | cross | glassy | cross | cross | cross-on | cross-on | cross-off |
High Tide | 3:19AM6.43m | 3:59PM6.64m | 4:38AM6.79m | 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 | ||||||||
Low Tide | 8:52PM2.25m | 9:36AM2.19m | 10:20PM1.94m | 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 | |||||||
 |  |  | | |  | | | | | | | | | | | | | |  | |
 | — | — | 5:52 | — | — | 5:52 | — | — | 5:54 | — | — | 5:56 | — | — | 5:58 | — | — | 5:58 | — | — |
 | 8:53 | — | — | 8:52 | — | — | 8:50 | — | — | 8:47 | — | — | 8:45 | — | — | 8:44 | — | — | 8:42 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 19 | 18 | 19 | 17 | 18 | 20 | 19 | 22 | 26 | 23 | 24 | 29 | 27 | 26 | 27 | 20 | 19 | 18 | 18 |
Feels °C | 18 | 16 | 17 | 16 | 15 | 16 | 17 | 16 | 20 | 23 | 19 | 21 | 28 | 25 | 22 | 22 | 20 | 19 | 16 | 18 |
Swell 1 Height (m) Direction Period (s) | SW 8 | WSW 7 | WSW 7 | W 8 | W 4 | WSW 6 | SW 6 | SW 7 | WSW 6 | SW 6 | WSW 11 | WSW 10 | WSW 10 | WSW 9 | WSW 10 | WSW 10 | WSW 10 | WSW 9 | W 9 | WSW 8 |
| kJ | 2 | 5 | 4 | 1 | 8 | 25 | 10 | 7 | 4 | 2 | 42 | 78 | 105 | 116 | 187 | 176 | 157 | 82 | 76 | 51 |
Swell 2 Height (m) Direction Period (s) | W 9 | W 9 | W 8 | SW 12 | WSW 6 | W 8 | W 5 | N 3 | W 8 | W 10 | SW 6 | SW 6 | W 6 | — | — | — | — | — | — | WSW 4 |
| kJ | 2 | 2 | 1 | 6 | 4 | 1 | 5 | 1 | 5 | 7 | 1 | 1 | 1 | — | — | — | — | — | — | 3 |
Swell 3 Height (m) Direction Period (s) | — | — | SW 12 | — | W 8 | — | W 8 | W 4 | W 10 | W 13 | SW 6 | — | — | — | — | — | — | — | — | — |
| kJ | — | — | 6 | — | 1 | — | 1 | 2 | 2 | 3 | 1 | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | WSW 3 | — | N 3 | — | — | ESE 3 | ESE 3 | SSE 3 | SE 3 | — | — | — | WNW 2 | — | — | — | — |
| kJ | — | — | — | 3 | — | 1 | — | — | 8 | 3 | 1 | 2 | — | — | — | 1 | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 181 | 180 | 405 | 358 | 292 | 180 | 358 | 125 | 395 | 358 | 4 | 6 | 0 | 2 | 0 | 322 | 0 | 1 | 322 | 4 |
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)
Latest Updates
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