Mewslade Bay Surf Break

Mewslade Bay Surf Forecast and Surf Report

Lat Long: 51.56° N 4.29° W

Issued: 6 pm 12 Jun 2026 (local time)

Forecast update in  hr  min

Today's Mewslade Bay sea temperature is
15.3° C

2.1°C warmer than normal for this time of year

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 12 Jun 2026:

  • Best quality surf: Saturday 13 Jun, 4AM (local time) - 5ft (1.5m), 7s period, W swell with cross-offshore winds.
  • Most powerful swell: Wednesday 17 Jun, 1PM (local time) - 6ft (1.9m), 7s period, WSW swell with 369 kJ wave energy.
  • Next surfable swell (1★+): Saturday 13 Jun, 4AM (local time) - 5ft (1.5m), 7s 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 Saturday (Jun 13) at 4AM. The primary swell is predicted to be 1.5m and 7s period with a secondary swell of 0.5m and 11s. 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 1.9m 7s and forecast to arrive on Wednesday (Jun 17) at 1PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 2s period and expected on Monday (Jun 15) at 4AM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+) 4AM (Sat 13th Jun)5ft (1.5m) 7s
Best Surf 4AM (Sat 13th Jun)5ft (1.5m) 7s
Most Powerful 1PM (Wed 17th Jun)6ft (1.9m) 7s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Mostly dry. Very mild (max 16°C on Sun afternoon, min 11°C on Fri night). Winds decreasing (fresh winds from the W on Fri afternoon, light winds from the N by Sat night).

Days 5-7 Weather Summary

Some drizzle, heaviest during Tue night. Very mild (max 17°C on Mon afternoon, min 14°C on Mon night). Winds increasing (calm on Mon afternoon, fresh winds from the SSW by Tue afternoon).

Fri
12
Saturday
13
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Thursday
18
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
Rating
(10 max)
0
0
1
0
1
1
1
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
Height Map
Wave
Height (m)
Direction
Period (s)
2.1
WSW
7
1.7
WSW
7
0.7
W
11
1
W
11
0.8
WSW
11
0.7
W
10
0.6
W
10
0.5
W
10
0.4
WSW
9
0.4
WSW
10
0.5
W
10
0.5
W
9
0.5
W
9
1.3
WSW
6
1.7
WSW
7
1.8
WSW
8
1.4
WSW
9
1.2
WSW
9
1.1
WSW
9
0.9
WSW
9
0.8
WSW
8
Wave Graph
Metric surfscale
Energy kJ
431
319
121
251
158
106
73
48
28
33
47
41
41
108
286
353
329
237
184
113
82
Wind (km/h)
35
W
20
W
15
WNW
20
W
15
NW
10
N
15
WNW
10
E
20
ESE
10
SE
15
SE
10
SSW
15
SW
30
SW
25
SW
20
SW
15
SSW
15
SSW
5
WNW
10
SE
10
SW
Wind State
cross-on
cross
cross
cross
cross-off
cross-off
cross-off
cross-off
cross
cross
cross-on
on
on
on
on
cross-on
on
on
cross
cross
on
High Tide
4:38PM7.31m
5:05AM7.60m
5:34PM7.77m
6:00AM7.98m
6:26PM8.18m
6:52AM8.26m
7:16PM8.47m
7:43AM8.39m
8:06PM8.61m
8:32AM8.34m
8:55PM8.58m
9:22AM8.14m
9:44PM8.37m
10:11AM7.80m
Low Tide
10:46PM1.27m
11:15AM1.00m
11:42PM0.85m
12:08PM0.69m
00:35AM0.50m
12:59PM0.47m
1:27AM0.29m
1:49PM0.38m
2:18AM0.24m
2:38PM0.44m
3:09AM0.36m
3:28PM0.63m
4:00AM0.63m
clear
clear
clear
part cloud
part cloud
cloud
part cloud
cloud
cloud
cloud
part cloud
part cloud
cloud
light rain
cloud
cloud
cloud
part cloud
cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:58
4:58
4:58
4:58
4:58
4:58
4:58
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:34
9:35
9:35
9:36
9:36
9:37
9:37
9:37
 mm
1
Temp °C
14
13
12
14
14
15
16
14
16
17
16
15
16
15
15
15
16
17
18
19
17
Feels °C
8
9
8
11
11
12
13
11
13
16
15
13
11
10
12
13
15
16
19
20
16
Swell 1
Height (m)
Direction
Period (s)
0.5
W
11
1
WSW
6
0.6
W
11
0.8
WSW
11
0.7
W
10
0.6
W
10
0.5
W
10
0.4
WSW
9
0.4
WSW
10
0.5
W
10
0.5
W
9
0.5
W
9
0.7
WSW
10
0.2
WSW
10
0.6
WSW
10
1.4
WSW
9
1.2
WSW
9
1.1
WSW
9
0.9
WSW
9
0.8
WSW
8
Energy kJ
65
90
89
158
106
73
48
28
33
47
41
41
104
10
80
329
237
184
113
82
Swell 2
Height (m)
Direction
Period (s)
0.6
W
10
0.7
W
11
0.1
SW
16
0.1
SW
14
0.1
SW
14
0.1
SW
13
0.1
SW
13
0.1
SW
13
0.2
W
11
0.4
SW
4
0.7
W
10
Energy kJ
78
121
9
8
7
7
7
7
10
3
98
Swell 3
Height (m)
Direction
Period (s)
0.1
W
14
0.1
SW
13
0.1
SW
12
0.4
WSW
11
Energy kJ
4
7
6
40
Wind waves
Height (m)
Direction
Period (s)
2.1
WSW
7
1.7
WSW
7
1
W
11
0.4
SE
3
0.4
SSE
3
0.7
SSW
6
0.4
SW
4
0.3
WSW
5
1.3
WSW
6
1.7
WSW
7
1.8
WSW
8
Energy kJ
431
319
251
2
4
27
5
4
108
286
353
Nearest Offshore or Glassy
Rating
(10 max)
2
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
Distance (km)
311
244
0
44
0
0
0
4
153
4
2
6
124
124
68
82
6
6
0
2
114
Best forecast wave conditions in Wales - Gower
Rating
(10 max)
1
1
1
1
1
1
1
1
2
1
1
1
Best forecast wave conditions in United Kingdom
Rating
(10 max)
1
3
2
2
2
2
1
1
1
1
1
1
1
1
1
2
2
2
1
1
Header Global
Rating
(10 max)
9
5
5
4
4
5
9
4
5
5
5
9
7
4
4
4
4
5
4
7
6
  • 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
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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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