Surf Forecasts:
Mewslade Bay surf forecast from 13 Aug 2026:
- Best quality surf: Thursday 13 Aug, 4AM (local time) - 3ft (0.9m), 9s period, WSW swell with glassy winds.
- Most powerful swell: Thursday 13 Aug, 10AM (local time) - 3ft (0.9m), 10s period, WSW swell with 184 kJ wave energy.
- Next surfable swell (1★+): Thursday 13 Aug, 4AM (local time) - 3ft (0.9m), 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 Thursday (Aug 13) at 4AM. The primary swell is predicted to be 0.9m and 9s period. 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 0.8m 4s period and expected on Saturday (Aug 15) at 7PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Thu 13th Aug) | 3ft (0.9m) 9s |
| Best Surf | 4AM (Thu 13th Aug) | 3ft (0.9m) 9s |
| 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 folks, Rusty here. Let’s be straight with you: the outlook for Mewslade Bay over the next couple of weeks is a tough pill to swallow. The data shows a real dry spell for quality waves, with the first proper recommendation not showing up until Thursday morning, August 13th. Even then, it's a "surfable waves but very ordinary conditions" kind of deal, so don’t get your hopes up too high.
We start the period on Wednesday afternoon, August 12th, with a weak 2ft swell from the WSW, cross-shore wind, and poor surf. The water temperature is a very unusual 68°, which is 7° warmer than normal for this time of year. That’s a big anomaly, so the water will feel like a bath.
The only real glimmer in this whole forecast is the Thursday morning, August 13th session. We get a 3ft groundswell from the WSW, with a 10-second period and a combined energy of 184 (moderate). The wind is glassy from the WNW. That is clean surf. It’s the standout of the whole run. If you can get out Thursday morning, you’ll find the best conditions on offer, but with crowds "sometimes", you might have some company. After that, the wind kicks up in the afternoon and it goes downhill.
From Friday, August 14th, through the weekend, it’s all cross-shore and cross-onshore wind with tiny swell. We see a period of clean offshore wind on Saturday morning, August 15th, and Sunday morning, August 16th, but the swell is only 1ft. It's not enough to ride. The combined energy drops into the teens and twenties. Monday, August 17th, starts glassy but with a pathetic 1ft swell, then turns into a choppy mess.
The second week is just as grim. From Tuesday, August 18th, right through to Thursday, August 27th, every single entry reads "poor surf conditions." The swell picks up a bit around the 20th and 23rd with 5ft to 5ft from the W, but the wind is onshore or cross-shore and fresh to strong. The combined energy spikes to 293 on Sunday afternoon, August 23rd, but it’s a lumpy, choppy mess. The swell period is short (6-8 seconds), so the waves will be weak and crumbly, not holding shape. For a beach setup like Mewslade, that longer-period groundswell we saw on the 13th is better, but the rest of it is just a write-off. There’s nothing here for beginners or experts. Honestly, with that wind and chop, a kite surfer might find it more interesting than a paddle surfer.
Stay patient, mates. The forecasts can change, but right now, it’s a long wait.
Rusty.
Short Range ForecastMostly dry. Warm (max 31°C on Wed afternoon, min 15°C on Fri night). Winds increasing (calm on Wed night, fresh winds from the N by Fri night). | Days 5-7 Weather SummaryMostly dry. Very mild (max 19°C on Sat afternoon, min 13°C on Sun night). Winds decreasing (fresh winds from the NNW on Sat afternoon, calm by Mon morning). | |||||||||||||||||||
Wed 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | ||||||||||||||
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 10 | WSW 9 | WSW 10 | WSW 10 | WSW 10 | WSW 9 | WSW 9 | W 8 | WSW 8 | W 7 | W 8 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | W 18 | WSW 6 | WSW 7 | WSW 7 | W 6 |
Wave Graph  | ||||||||||||||||||||
 kJ | 72 | 119 | 184 | 133 | 125 | 84 | 80 | 33 | 22 | 40 | 29 | 18 | 10 | 10 | 9 | 6 | 59 | 66 | 99 | 135 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | glassy | glassy | cross | cross | cross | cross | cross-off | off | cross-off | cross-off | off | cross-off | off | glassy | cross-on | cross-on | cross-on | cross-on | cross-off |
High Tide | 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 | 9:59AM7.98m | 10:17PM7.94m | 10:35AM7.48m | 10:54PM7.30m | |||||||
Low Tide | 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 | 4:02PM0.76m | 4:23AM1.02m | 4:38PM1.28m | ||||||||
 |  |  | | | | |  | | | |  | | | | |  | | | | |
 | — | — | 5:58 | — | — | 5:58 | — | — | 6:01 | — | — | 6:03 | — | — | 6:03 | — | — | 6:05 | — | — |
 | 8:45 | — | — | 8:44 | — | — | 8:42 | — | — | 8:39 | — | — | 8:37 | — | — | 8:36 | — | — | 8:34 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 31 | 25 | 23 | 24 | 20 | 20 | 21 | 17 | 19 | 19 | 15 | 16 | 16 | 14 | 16 | 17 | 17 | 18 | 18 | 19 |
Feels °C | 28 | 26 | 21 | 21 | 20 | 19 | 20 | 14 | 14 | 13 | 11 | 14 | 14 | 11 | 14 | 15 | 16 | 18 | 15 | 15 |
Swell 1 Height (m) Direction Period (s) | WSW 10 | WSW 9 | WSW 10 | WSW 10 | WSW 10 | WSW 9 | WSW 9 | WSW 6 | WSW 8 | W 7 | W 8 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | W 7 | WSW 6 | WSW 7 | SW 17 | SW 17 |
| kJ | 72 | 119 | 184 | 133 | 125 | 84 | 80 | 20 | 22 | 40 | 29 | 18 | 10 | 10 | 9 | 4 | 59 | 66 | 11 | 12 |
Swell 2 Height (m) Direction Period (s) | SE 3 | — | — | — | — | — | — | W 8 | WSW 7 | — | WNW 4 | — | — | W 4 | — | W 18 | W 17 | SW 16 | — | SW 17 |
| kJ | 1 | — | — | — | — | — | — | 33 | 11 | — | 2 | — | — | 1 | — | 6 | 5 | 11 | — | 12 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | W 11 | W 10 | — | — | — | — | — | W 18 | W 8 | — | — | — | — |
| kJ | — | — | — | — | — | — | — | 2 | 2 | — | — | — | — | — | 6 | 1 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SE 3 | — | — | — | W 3 | — | — | NNW 3 | N 3 | NW 4 | N 4 | N 3 | NW 3 | NNW 3 | — | SW 3 | — | — | WSW 7 | W 6 |
| kJ | 2 | — | — | — | 2 | — | — | 9 | 8 | 13 | 10 | 1 | 3 | 3 | — | 5 | — | — | 99 | 135 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 6 | 0 | 0 | 358 | 0 | 1 | 195 | 139 | 412 | 398 | 181 | 301 | 180 | 377 | 379 | 172 | 117 | 1 | 412 | 214 |
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