Mewslade Bay Surf Break

Mewslade Bay Surf Forecast and Surf Report

Lat Long: 51.56° N 4.29° W

Issued: 6 am 15 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 15 Jun 2026:

  • Best quality surf: Thursday 18 Jun, 7PM (local time) - 3ft (0.9m), 9s period, WSW swell with glassy winds.
  • Most powerful swell: Friday 19 Jun, 10PM (local time) - 5ft (1.5m), 8s period, WSW swell with 313 kJ wave energy.
  • Next surfable swell (1★+): Thursday 18 Jun, 7PM (local time) - 3ft (0.9m), 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 (Jun 18) at 7PM. The primary swell is predicted to be 0.9m and 9s 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 1.5m 8s and forecast to arrive on Friday (Jun 19) at 10PM. 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 3s period and expected on Monday (Jun 22) at 4AM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+) 7PM (Thu 18th Jun)3ft (0.9m) 9s
Best Surf 7PM (Thu 18th Jun)3ft (0.9m) 9s
Most Powerful10PM (Fri 19th Jun)5ft (1.5m) 8s

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 16°C on Mon morning, min 14°C on Mon afternoon). Winds decreasing (fresh winds from the ESE on Mon morning, light winds from the SSW by Wed night).

Days 4-6 Weather Summary

Mostly dry. Very mild (max 18°C on Thu afternoon, min 14°C on Fri night). Wind will be generally light.

Monday
15
Tuesday
16
Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
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
1
1
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
WSW
9
0.4
WSW
10
0.5
W
10
0.5
W
9
0.7
WSW
11
0.8
WSW
10
1.3
WSW
6
1.4
WSW
7
1.2
WSW
10
1
WSW
10
0.9
WSW
9
0.8
WSW
9
0.9
WSW
9
1.1
WSW
8
1.4
WSW
8
1.1
WSW
8
1
WSW
8
0.8
WSW
7
0.5
WSW
7
0.4
SW
7
0.3
SW
7
Wave Graph
Metric surfscale
Energy kJ
28
32
47
41
123
147
128
170
258
175
146
108
123
149
275
149
119
62
29
13
7
Wind (km/h)
35
ESE
20
SSW
15
W
15
SW
15
SW
25
SSW
25
SW
20
SW
15
SW
15
S
10
S
10
SSE
15
SSW
15
SW
10
WSW
5
WSW
5
NW
5
N
5
W
10
WSW
10
NW
Wind State
cross
on
cross-on
on
on
on
on
on
on
on
cross-on
cross-on
on
on
cross-on
cross-on
cross-off
glassy
cross
cross-on
cross-off
High Tide
7:16PM8.47m
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
Low Tide
12:59PM0.47m
1:27AM0.29m
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
cloud
cloud
part cloud
part cloud
cloud
light rain
light rain
part cloud
clear
part cloud
part cloud
clear
part cloud
cloud
part cloud
part cloud
part cloud
part cloud
cloud
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>
9:36
9:36
9:37
9:37
9:37
9:37
9:37
 mm
2
2
Temp °C
16
14
14
15
15
15
15
15
15
16
18
17
17
17
15
15
17
17
18
18
18
Feels °C
13
12
11
13
13
12
11
13
13
15
19
18
15
16
14
15
17
17
19
17
17
Swell 1
Height (m)
Direction
Period (s)
0.4
WSW
9
0.4
WSW
10
0.5
W
10
0.5
W
9
0.7
WSW
11
0.8
WSW
10
0.7
WSW
10
0.7
WSW
10
1.2
WSW
10
1
WSW
10
0.9
WSW
9
0.8
WSW
9
0.9
WSW
9
0.9
W
8
1.4
WSW
8
1.1
WSW
8
1
WSW
8
0.8
WSW
7
0.5
WSW
7
0.4
SW
7
0.3
SW
7
Energy kJ
28
32
47
41
123
147
106
106
258
175
146
108
123
111
275
149
119
62
29
13
7
Swell 2
Height (m)
Direction
Period (s)
0.1
SW
13
0.3
ESE
3
0.1
SW
13
0.3
WSW
12
0.4
WSW
9
0.8
W
10
0.7
W
10
0.3
WSW
8
0.4
WSW
7
0.3
W
7
0.2
W
7
Energy kJ
7
2
7
28
26
141
102
11
21
8
4
Swell 3
Height (m)
Direction
Period (s)
0.1
SW
13
0.1
SW
12
Energy kJ
7
6
Wind waves
Height (m)
Direction
Period (s)
0.8
ESE
4
0.5
SW
3
0.6
SW
5
0.7
WSW
5
0.7
WSW
5
1.1
SW
6
1.3
WSW
6
1.4
WSW
7
1.1
WSW
8
0.4
E
3
Energy kJ
16
4
19
23
19
72
128
170
149
2
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
2
1
2
1
1
1
1
1
1
1
1
1
1
1
1
Distance (km)
172
358
1
124
6
104
124
124
6
6
6
2
6
124
31
37
0
0
195
195
397
Best forecast wave conditions in Wales - Gower
Rating
(10 max)
1
1
2
1
1
1
1
1
1
Best forecast wave conditions in United Kingdom
Rating
(10 max)
2
1
2
1
2
1
3
2
2
2
1
1
1
2
1
2
1
1
1
1
Header Global
Rating
(10 max)
5
5
5
5
4
4
5
5
5
9
6
7
5
4
7
4
7
4
9
6
6
  • 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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