Mewslade Bay Surf Break

Lat Long: 51.56° N 4.29° W

Mewslade Bay Surf Forecast and Surf Report

Issued: 12 am 10 Aug 2026 (local time)

Forecast update in  hr  min

Today's Mewslade Bay sea temperature is
19.7° C
3.5° 

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 10 Aug 2026:

  • Best quality surf: Wednesday 12 Aug, 4PM (local time) - 2.5ft (0.7m), 10s 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★+): Wednesday 12 Aug, 4PM (local time) - 2.5ft (0.7m), 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 0.7m and 10s 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 cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Saturday (Aug 15) at 7PM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+) 4PM (Wed 12th Aug)2.5ft (0.7m) 10s
Best Surf 4PM (Wed 12th Aug)2.5ft (0.7m) 10s
Most Powerful10AM (Thu 13th Aug)3ft (0.9m) 10s

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


The Lowdown

Alright, let’s get into it. This is Mewslade Bay, and to be honest, it’s a pretty quiet stretch. We’re looking at a long spell of small, weak swell and funky wind for most of the next two weeks, but there are a couple of moments where it might just line up.

Right from the start, Monday the 10th and Tuesday the 11th are total duds – tiny waves and nasty conditions. Not worth the walk. Wednesday the 12th shows a little something by the afternoon. Swell is only 2ft from the WSW with a 10-second period, but the wind goes glassy, dead still. The combined swell energy is still low (96), but it’s clean and rideable. If you’re really itching, that’s your window, but keep your expectations low.

Thursday the 13th morning is the best of the first week. Swell bumps up to 3ft from the WSW, still a 10-second period, with a light cross-offshore breeze from the NNW. Combined energy hits 184, so there’s a bit more power. The water temp is about average for this time of year. Clean, rideable, small waves. The afternoon gets trashed by a fresh cross-shore wind though.

After that, it’s a long, flat gap. From Friday the 14th all the way through to Wednesday the 20th, it’s mostly tiny, weak, and messy. Swell hangs around 1ft to 2ft, short periods, and the wind is all over the place. Nothing to write home about.

Then, Wednesday the 19th morning gives us another glassy moment. Swell is 3ft from the WSW with an 8-second period, combined energy of 114, and dead calm winds. Clean, but again, very average. That afternoon the swell jumps to 4ft, but the period drops to a terrible 5 seconds – just lumpy and weak.

Thursday the 20th morning is offshore but tiny – 3ft with a 6-second period. Clean, but barely breaking.

Now, here’s the one you want to circle. Tuesday the 25th morning. This is the clear standout of the whole 16-day forecast. Swell hits 4ft from the WSW with an 8-second period, and the combined energy leaps to 249 – that’s some proper push finally. And the wind? Dead calm, glassy. Water temp is about average. The swell direction is perfect for Mewslade Bay, and with those clean, glassy conditions, this will be the best surf of the fortnight. The period is moderate, so it won’t be super powerful, but it’ll be fun and clean. It’s a popular spot when it’s good, so expect some company.

So, bottom line: the first week has a couple of very average, clean windows, but most of it is flat and poor. The real gem is Tuesday the 25th – that’s your day. It’s long-range, so keep watching the charts, but that’s the one to aim for.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 30°C on Wed afternoon, min 14°C on Sun night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 28°C on Thu afternoon, min 16°C on Fri night). Winds increasing (light winds from the NW on Wed night, fresh winds from the WNW by Thu afternoon).

Monday
10
Tuesday
11
Wednesday
12
Thursday
13
Friday
14
Saturday
15
Sunday
16
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
1
1
1
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)
0.7
W
6
0.4
SW
6
0.3
SW
7
0.2
W
8
0.2
W
10
0.3
WSW
11
0.6
WSW
10
0.7
WSW
10
0.9
WSW
9
0.9
WSW
10
0.9
WSW
10
0.9
WSW
10
0.8
WSW
9
0.8
WSW
9
0.7
WSW
8
0.7
W
8
0.6
W
8
0.5
W
8
0.3
WSW
7
0.3
WSW
7
0.2
W
7
Wave Graph
Metric surfscale
Energy kJ
32
10
7
5
7
25
78
96
116
184
140
154
106
103
70
63
41
29
11
11
4
Wind (km/h)
15
N
15
W
10
NE
25
ESE
5
ESE
5
E
15
ESE
5
NNE
10
N
10
NNW
30
WNW
15
WNW
20
NNW
25
NW
20
N
20
N
30
NNW
30
N
20
N
20
WNW
15
NW
Wind State
cross-off
cross-on
cross-off
cross
cross
cross-off
cross
glassy
off
cross-off
cross
cross
cross-off
cross-off
cross-off
cross-off
cross-off
off
cross-off
cross
cross-off
High Tide
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
8:44AM8.55m
9:02PM8.81m
9:22AM8.35m
9:40PM8.46m
Low Tide
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
2:49PM0.14m
3:12AM0.17m
3:25PM0.37m
3:48AM0.53m
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
part cloud
clear
clear
clear
clear
clear
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:52
5:54
5:56
5:58
5:58
6:01
6:03
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:50
8:47
8:45
8:44
8:42
8:39
8:37
 mm
Temp °C
19
20
19
22
25
23
25
30
26
27
28
21
21
21
17
20
19
15
19
20
17
Feels °C
16
17
16
21
23
22
22
29
24
24
24
21
18
16
14
15
13
9
15
15
13
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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.

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