Mewslade Bay Surf Break

Lat Long: 51.56° N 4.29° W

Mewslade Bay Surf Forecast and Surf Report

Issued: 6 am 05 Aug 2026 (local time)

Forecast update in  hr  min

Today's Mewslade Bay sea temperature is
20.0° C
3.8° 

Mewslade Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Mewslade Bay surf forecast from 5 Aug 2026:

  • Best quality surf: Monday 10 Aug, 7AM (local time) - 3.5ft (1.0m), 6s period, W swell with cross-offshore winds.
  • Most powerful swell: Wednesday 5 Aug, 4PM (local time) - 5ft (1.6m), 7s period, WSW swell with 219 kJ wave energy.
  • Next surfable swell (1★+): Monday 10 Aug, 7AM (local time) - 3.5ft (1.0m), 6s period with W 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 Monday (Aug 10) at 7AM. The primary swell is predicted to be 1.0m and 6s period. The wind is predicted to be cross-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 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 0.9m 4s period and expected on Wednesday (Aug 12) at 10AM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+) 7AM (Mon 10th Aug)3.5ft (1.0m) 6s
Best Surf 7AM (Mon 10th Aug)3.5ft (1.0m) 6s
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 look at what’s shaping up for Mewslade Bay over the next couple of weeks. I’ll be straight with you – it’s a tough start.

We’ve got a long, dry spell ahead. The first real chance of anything worthwhile doesn’t show up until the morning of Monday, 17th of August. That’s a solid week and a half of waiting. The water temp is sitting at 68°, which is much warmer than normal for this time of year – a solid 7° above average, so you’ll be leaving the thick wetsuit at home.

Alright, let’s talk about the standouts. The morning of Monday, 17th August is the only time in this whole forecast that looks truly special. The swell is going to be a big 12 ft from the WSW, with a long period of 11 seconds giving it plenty of punch. The combined energy is massive (2938), so this is serious groundswell. The wind is NW at 16 mph, which is a clean cross-offshore breeze. The waves will be clean and powerful. But – and this is a big but – that size is too big for beginners. It’s only for experienced surfers, and the long period means it’ll be breaking a bit straight across the beach, so it might be a bit tricky. The crowd situation is just "sometimes" here, so you might get a few out, but it won’t be a circus.

The afternoon of that same day, Monday 17th, drops off noticeably. The swell drops to 8 ft from the W, the period shortens to 9 seconds, and the wind swings to a cross-shore 19 mph, making it lumpy. The energy is still high (1174), but the quality is gone. Not worth the paddle.

Before that, the afternoon of Wednesday, 12th August gives a tiny glimmer. You’ll see a 2 ft WSW swell with a 10-second period, clean cross-offshore wind from the E, and moderate energy (108). It’s surfable, but the conditions are described as "very ordinary." It’s a scrap, not a session.

The rest of the 16 days is a washout. Small, weak swells, poor wind directions, and messy conditions. A few spots show clean conditions in the mornings, like the 9th and 10th with a light cross-offshore breeze, but the swell is just too small (2 ft to 3 ft) to get excited about. The combined energy barely registers (43 and 48). It’s flat, really.

So, to sum it up: Wait for the 17th of August. Get there early for the morning session if you’re an expert, but be aware it’s a long-range call, so keep an eye on the forecasts. The rest of the time, the board stays in the bag.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 17°C on Wed afternoon, min 13°C on Wed night). Winds decreasing (fresh winds from the W on Wed afternoon, calm by Thu night).

Days 4-6 Weather Summary

Mostly dry. Warm (max 20°C on Sun afternoon, min 15°C on Sat morning). Wind will be generally light.

Wednesday
5
Thursday
6
Friday
7
Saturday
8
Sunday
9
Monday
10
Tuesday
11
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.5
WSW
7
1.6
WSW
7
1.2
W
6
1
W
6
0.7
WSW
6
0.4
WSW
5
0.2
W
9
0.2
W
9
0.2
W
9
0.2
W
9
0.3
WSW
8
0.6
WSW
7
0.6
WSW
7
0.8
WSW
4
1.2
W
6
0.8
WSW
6
0.7
WSW
6
0.4
WSW
5
0.3
W
6
0.2
W
6
0.2
W
6
Wave Graph
Metric surfscale
Energy kJ
200
219
105
76
34
9
7
6
6
6
13
42
35
25
94
48
31
10
7
3
3
Wind (km/h)
30
WNW
30
W
25
NW
15
WNW
25
W
10
NNW
10
S
15
WSW
10
N
5
SE
15
W
5
NNW
5
NW
20
W
10
WNW
15
WNW
25
W
10
NNE
15
ESE
5
W
10
ENE
Wind State
cross
cross-on
cross-off
cross
cross
cross-off
on
cross-on
cross-off
cross-on
cross
cross-off
cross-off
cross
cross
cross-off
cross
off
cross
cross-on
cross-off
High Tide
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
5:42AM7.35m
6:08PM7.85m
Low Tide
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
11:55AM1.22m
00:26AM0.80m
part cloud
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
clear
part cloud
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:45
5:47
5:48
5:50
5:52
5:52
5:54
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:59
8:57
8:55
8:53
8:52
8:50
8:47
 mm
Temp °C
16
17
17
15
16
15
16
16
16
17
19
18
19
20
18
18
19
18
18
21
21
Feels °C
10
12
12
10
11
12
14
13
14
15
16
16
16
17
16
14
15
16
16
18
18
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
How to use the Wavefinder 
submit an eyeball surf report

Quick surf report for Mewslade Bay:

join our community of surf reporters

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 locationNearest