Mewslade Bay Surf Break

Mewslade Bay Surf Forecast and Surf Report

Lat Long: 51.56° N 4.29° W

Issued: 12 am 16 Jun 2026 (local time)

Forecast update in  hr  min

Today's Mewslade Bay sea temperature is
15.5° C

2.0°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 16 Jun 2026:

  • Best quality surf: Saturday 20 Jun, 10PM (local time) - 2.5ft (0.8m), 7s period, WSW swell with cross-offshore winds.
  • Most powerful swell: Wednesday 17 Jun, 1PM (local time) - 4.5ft (1.4m), 10s period, WSW swell with 410 kJ wave energy.
  • Next surfable swell (1★+): Saturday 20 Jun, 10PM (local time) - 2.5ft (0.8m), 7s 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 Saturday (Jun 20) at 10PM. The primary swell is predicted to be 0.8m and 7s 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 1.4m 10s 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 0.2m 3s period and expected on Tuesday (Jun 23) at 7AM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+)10PM (Sat 20th Jun)2.5ft (0.8m) 7s
Best Surf10PM (Sat 20th Jun)2.5ft (0.8m) 7s
Most Powerful 1PM (Wed 17th Jun)4.5ft (1.4m) 10s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Light rain (total 4mm), mostly falling on Tue night. Very mild (max 18°C on Thu morning, min 14°C on Mon night). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 4mm), mostly falling on Fri night. Warm (max 21°C on Sun afternoon, min 15°C on Fri night). Wind will be generally light.

Tuesday
16
Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
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
1
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)
0.5
W
9
0.7
WSW
11
0.8
WSW
10
0.8
WSW
10
1.3
WSW
10
1.1
WSW
10
1
WSW
10
1.3
WSW
7
1.1
WSW
9
0.9
WSW
8
1
WSW
8
1.2
WSW
8
1.2
WSW
8
1
WSW
8
0.8
WSW
7
0.5
WSW
7
0.4
WSW
7
0.4
SW
7
0.3
WSW
7
0.2
WSW
7
0.4
WSW
8
Wave Graph
Metric surfscale
Energy kJ
41
126
147
136
338
223
175
134
176
119
137
176
183
107
62
30
20
12
9
5
22
Wind (km/h)
15
SSW
20
SW
25
SW
20
SW
20
SW
15
SW
20
SSW
20
SW
10
SSE
15
SSE
20
SW
10
SW
10
SW
10
WSW
5
NE
15
ESE
5
WNW
10
NNW
10
W
15
WSW
20
W
Wind State
on
on
on
on
on
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
glassy
cross
glassy
cross-off
cross-on
cross-on
cross
High Tide
7:43AM8.39m
8:06PM8.61m
8:32AM8.34m
8:55PM8.58m
9:22AM8.14m
9:44PM8.37m
10:11AM7.80m
10:34PM8.02m
11:02AM7.38m
11:26PM7.57m
11:55AM6.95m
00:20AM7.10m
12:51PM6.58m
1:18AM6.69m
Low Tide
1:49PM0.38m
2:18AM0.24m
2:38PM0.44m
3:09AM0.36m
3:28PM0.63m
4:00AM0.63m
4:18PM0.95m
4:52AM1.00m
5:10PM1.33m
5:46AM1.41m
6:05PM1.73m
6:42AM1.80m
7:03PM2.08m
cloud
cloud
light rain
cloud
clear
part cloud
cloud
part cloud
clear
clear
part cloud
rain showers
cloud
clear
clear
part cloud
cloud
clear
part cloud
part cloud
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>
9:36
9:37
9:37
9:37
9:37
9:37
9:37
 mm
4
4
Temp °C
15
15
15
15
15
16
18
18
17
18
18
15
15
16
17
20
21
20
17
17
14
Feels °C
13
12
12
13
12
14
16
16
17
16
15
14
14
15
18
20
22
20
16
16
13
Swell 1
Height (m)
Direction
Period (s)
0.5
W
9
0.7
WSW
11
0.8
WSW
10
0.8
WSW
10
1.1
WSW
10
1
WSW
10
0.6
W
9
1.1
WSW
9
0.9
WSW
8
1
WSW
8
1.2
WSW
8
1.2
WSW
8
1
WSW
8
0.8
WSW
7
0.5
WSW
7
0.4
WSW
7
0.4
SW
7
0.3
WSW
7
0.2
WSW
7
0.4
WSW
8
Energy kJ
41
126
147
136
223
175
64
176
119
137
176
183
107
62
30
20
12
9
5
22
Swell 2
Height (m)
Direction
Period (s)
0.3
WSW
12
0.4
WSW
9
0.5
W
9
0.1
W
9
0.1
W
8
0.1
SW
9
0.1
W
10
Energy kJ
28
26
45
2
1
3
2
Swell 3
Height (m)
Direction
Period (s)
0.1
SW
12
Energy kJ
6
Wind waves
Height (m)
Direction
Period (s)
0.7
WSW
5
0.8
WSW
4
1.1
SW
5
1.2
WSW
6
1.3
WSW
10
1.3
WSW
7
0.2
ESE
2
0.3
WNW
3
Energy kJ
21
26
62
110
338
134
1
2
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
2
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Distance (km)
124
124
104
124
124
49
104
49
2
2
124
31
46
138
0
419
419
756
437
374
366
Best forecast wave conditions in Wales - Gower
Rating
(10 max)
2
1
1
Best forecast wave conditions in United Kingdom
Rating
(10 max)
1
2
2
2
2
2
2
3
2
1
1
2
1
1
1
1
1
1
1
1
Header Global
Rating
(10 max)
5
4
4
5
4
5
6
6
6
6
7
4
5
4
9
8
6
5
5
5
9
  • 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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