Mewslade Bay Surf Break

Lat Long: 51.56° N 4.29° W

Mewslade Bay Surf Forecast and Surf Report

Issued: 12 pm 07 Aug 2026 (local time)

Forecast update in  hr  min

Today's Mewslade Bay sea temperature is
19.9° C
3.6° 

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 7 Aug 2026:

  • Best quality surf: Thursday 13 Aug, 1AM (local time) - 2.5ft (0.8m), 9s period, WSW swell with cross-offshore winds.
  • Most powerful swell: Thursday 13 Aug, 7PM (local time) - 3ft (0.9m), 10s period, WSW swell with 140 kJ wave energy.
  • Next surfable swell (1★+): Thursday 13 Aug, 1AM (local time) - 2.5ft (0.8m), 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 1AM. The primary swell is predicted to be 0.8m and 9s period with a secondary swell of 0.2m and 3s. Another secondary swell of 0.2m and 3s is also forecast. 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 0.9m 10s and forecast to arrive on Thursday (Aug 13) at 7PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Wednesday (Aug 12) at 7AM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+) 1AM (Thu 13th Aug)2.5ft (0.8m) 9s
Best Surf 1AM (Thu 13th Aug)2.5ft (0.8m) 9s
Most Powerful 7PM (Thu 13th Aug)3ft (0.9m) 10s

Table - best surf conditions forecast for Mewslade Bay over the next 16 days.


The Lowdown

Alright folks, it’s Rusty here, and I’ve got to be straight with you. The next couple of weeks are looking pretty desperate for a wave. There’s a real dry spell on the horizon, so let’s talk about what’s actually out there before we get to the only time the ocean might wake up.

The forecast starts with a whole lot of nothing. From Friday the 7th right through to Tuesday the 19th, it’s a flat, dribbly mess. The swell is basically non-existent, with heights mostly under 3 feet. The energy in the water is so weak you could count the joules on one hand – we’re talking readings down at 12 or 3 for the combined energy. There are glimmers of something on Wednesday the 12th and Thursday the 13th when that energy climbs past 100, but the swell is still tiny and the winds are cross-shore or onshore, just chopping up what little there is. Honestly, it’s more of a float-around-on-a-bodyboard kind of week than a surf week. Mewslade Bay is going to be pretty lackluster through this entire stretch.

Then there’s a bit of a tease. On Thursday the 20th, the swell finally starts to push up. The morning has a clean offshore wind, but only a small 1.3 foot wave. The afternoon jumps to 5.2 feet from the west with a period of 6 seconds, which is just short and weak. The energy is climbing to 209, but that short period and a fresh cross-offshore wind isn't going to make it any kind of classic. It will be better than the junk before it, but don’t expect much.

That brings us to the only real event in this entire forecast. On Friday the 21st, we see the biggest swell of the window. The morning brings 5.9 feet of west swell with energy at a much heartier 362, though the wind is a cross-onshore, making things a little lumpy. The afternoon backs off slightly to 4.6 feet, with a light onshore. It’s not perfect, but it’s the most wave we’ve seen. Then comes Saturday the 22nd. That’s the day. The morning forecast is for 3.3 feet of west swell, but the wind is dead glassy. That’s the standout. It’s a small, clean window at Mewslade Bay, and for the first time in two weeks, it’ll actually look like a surf spot. It’s not big, but it will be the cleanest and best shaped you’ll find. The energy is only around 88, so keep your expectations in check, but with that glass and a 3.3 foot swell rolling in, it’s the only day worth paddling out for. This is over a week away though, so treat it as a promising idea, not a guarantee.

So there you have it. A long, flat grind until the 22nd. A real test of patience.

Short Range Forecast

Mostly dry. Warm (max 20°C on Sat afternoon, min 14°C on Fri night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 26°C on Tue afternoon, min 16°C on Mon night). Mainly fresh winds.

Friday
7
Saturday
8
Sunday
9
Monday
10
Tuesday
11
Wednesday
12
Thursday
13
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
1
0
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.2
W
9
0.4
WSW
5
0.2
W
9
0.1
W
9
0.1
W
9
0.2
WSW
7
0.2
WSW
7
0.4
WSW
6
0.2
WSW
6
0.2
WSW
6
0.4
WSW
5
0.3
SW
7
0.2
W
8
0.2
SSE
3
0.3
WSW
12
0.6
WSW
10
0.7
WSW
10
0.8
WSW
9
0.9
WSW
8
0.9
WSW
9
0.8
WSW
10
Wave Graph
Metric surfscale
Energy kJ
7
7
6
2
2
5
6
13
4
4
8
7
5
2
27
80
98
90
103
134
123
Wind (km/h)
10
SSW
20
WSW
10
N
15
SE
10
NW
10
NNW
10
WNW
25
W
10
NW
10
NNW
15
W
15
NE
30
ESE
10
SE
20
ESE
35
ESE
15
W
10
NW
10
W
20
W
10
NW
Wind State
on
cross-on
off
cross
cross-off
cross-off
cross
cross-on
cross-off
cross-off
cross-on
cross-off
cross
cross-on
cross
cross
cross-on
cross-off
cross
cross-on
cross-off
High Tide
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
6:35AM7.89m
6:57PM8.42m
7:21AM8.31m
7:41PM8.80m
Low Tide
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
12:45PM0.69m
1:13AM0.33m
1:30PM0.31m
1:56AM0.05m
part cloud
clear
part cloud
cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:48
5:50
5:52
5:52
5:54
5:56
5:58
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:55
8:53
8:52
8:50
8:47
8:45
8:44
 mm
Temp °C
17
17
16
17
20
19
19
19
18
20
23
21
23
26
24
25
24
19
19
20
18
Feels °C
15
14
15
16
18
17
16
16
17
18
21
17
21
24
23
20
20
17
19
17
17
  • 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