Mewslade Bay Surf Break

Lat Long: 51.56° N 4.29° W

Mewslade Bay Surf Forecast and Surf Report

Issued: 6 pm 10 Aug 2026 (local time)

Forecast update in  hr  min

Today's Mewslade Bay sea temperature is
19.8° 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 11 Aug 2026:

  • Best quality surf: Wednesday 12 Aug, 4PM (local time) - 2.5ft (0.7m), 10s period, WSW swell with cross-offshore winds.
  • Most powerful swell: Thursday 13 Aug, 1PM (local time) - 3ft (0.9m), 10s period, WSW swell with 170 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 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 1PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Saturday (Aug 15) at 7AM.

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 Powerful 1PM (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 get into what’s on offer at Mewslade Bay.

Right off the bat, I’ll be straight with ya: the next week and a half is pretty grim for a proper surf. There’s a long quiet spell from now until around Saturday the 22nd of August. We’ve got small, weak swell and messy winds for days, so you're better off doing a beach clean or tinkering with your gear.

Things finally get a pulse on Saturday the 22nd of August. The morning is the standout window, but it’s not for the faint of heart. We’re looking at a solid 8ft swell from the W, with a period of 11 seconds – that's proper groundswell energy. The combined energy is a massive 1655 (strong to very strong), so this is a powerful, deep water push. The wind is a clean cross-offshore from the NNW, buffering the face nicely. That said, 8ft at an exposed spot like Mewslade Bay is expert territory only. The crowds are sometimes around here, so on a Saturday with that size and quality, expect a few locals out. This is a big, raw setup.

The swell settles quickly by Sunday the 23rd of August morning. We’re down to 5ft, still from the W, with lighter NNW cross-off winds (6 mph) and waves that are much more manageable. The energy is 286 (moderate) so it’s still got a pulse, but is way more accessible for the strong intermediate crew. It won’t be the same beast as Saturday, but it’ll be cleaner and more user-friendly.

For the rest of the outlook, we drop back into small, weak junk. Monday the 24th has a long-period 14-second swell, but it’s only 2ft. That’s a tease – tons of period but no height to push it over the bar.

So to wrap it up: If you’re a charger with a big wave gun, the morning of Saturday the 22nd is your only true stand-out. If you want something a bit more relaxed but still fun, Sunday morning the 23rd is the call. The rest? Leave the board in the car.

Stay wet,
Rusty

Short Range Forecast

Mostly dry. Warm (max 31°C on Wed afternoon, min 16°C on Mon night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Warm (max 22°C on Thu afternoon, min 14°C on Sat night). Wind will be generally light.

Mon
10
Tuesday
11
Wednesday
12
Thursday
13
Friday
14
Saturday
15
Sunday
16
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
1
1
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)
0.4
SW
6
0.3
SW
7
0.2
W
8
0.2
W
10
0.4
WSW
11
0.6
WSW
10
0.7
WSW
10
0.9
WSW
9
0.9
WSW
10
0.9
WSW
10
0.8
WSW
10
0.9
WSW
9
0.9
W
6
0.5
W
8
0.8
WSW
7
0.8
W
7
0.5
W
8
0.3
WSW
7
0.3
WSW
7
0.3
WSW
7
Wave Graph
Metric surfscale
Energy kJ
10
7
5
7
42
78
96
119
146
163
123
135
50
33
73
70
29
11
10
10
Wind (km/h)
10
W
10
ENE
25
ESE
10
ESE
10
SE
15
ESE
5
E
5
N
20
WNW
25
W
10
W
10
WNW
20
W
15
N
20
NNW
15
NW
15
N
10
NNW
20
WNW
20
N
Wind State
cross
cross-off
cross
cross
cross
cross
cross-off
cross-off
cross
cross-on
cross
cross
cross
cross-off
cross-off
cross-off
off
cross-off
cross
cross-off
High Tide
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
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
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
cloud
part cloud
part cloud
clear
part cloud
part cloud
part cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
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
20
19
22
26
24
26
31
26
23
22
19
19
20
17
18
19
15
18
20
15
Feels °C
17
16
20
24
23
22
29
24
20
19
19
19
17
14
15
16
11
15
16
11
  • Map Icons:
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  • 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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