Mewslade Bay Surf Break

Lat Long: 51.56° N 4.29° W

Mewslade Bay Surf Forecast and Surf Report

Issued: 6 pm 21 Sep 2026 (local time)

Forecast update in  hr  min

Today's Mewslade Bay sea temperature is
17.9°C
2.5° 

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 21 Sep 2026:

  • Best quality surf: Friday 25 Sep, 10PM (local time) - 2.5ft (0.8m), 12s period, WSW swell with offshore winds.
  • Most powerful swell: Sunday 27 Sep, 1PM (local time) - 7ft (2.2m), 7s period, WSW swell with 504 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 22 Sep, 7PM (local time) - 2.5ft (0.7m), 12s 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 Tuesday (Sep 22) at 7PM. The primary swell is predicted to be 0.7m and 12s period with a secondary swell of 0.2m and 19s. 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 2.2m 7s and forecast to arrive on Sunday (Sep 27) 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 0.6m 3s period and expected on Wednesday (Sep 23) at 4PM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+) 7PM (Tue 22nd Sep)2.5ft (0.7m) 12s
Best Surf10PM (Fri 25th Sep)2.5ft (0.8m) 12s
Most Powerful 1PM (Sun 27th Sep)7ft (2.2m) 7s

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


Short Range Forecast

Some drizzle, heaviest during Tue night. Very mild (max 18°C on Mon afternoon, min 13°C on Wed night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Very mild (max 18°C on Thu afternoon, min 12°C on Fri night). Winds increasing (calm on Thu afternoon, fresh winds from the SSW by Sun morning).

Mon
21
Tuesday
22
Wednesday
23
Thursday
24
Friday
25
Saturday
26
Sunday
27
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
1
1
1
0
0
0
0
0
1
1
1
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
WSW
7
0.4
WSW
7
0.5
W
8
0.6
W
12
0.8
W
11
0.7
WSW
14
0.8
WSW
13
0.6
W
12
0.3
WSW
11
0.3
WSW
11
0.4
WSW
10
0.8
WSW
12
0.8
W
10
0.7
WSW
11
0.8
WSW
12
0.8
WSW
11
1.3
WSW
6
2
WSW
7
2.2
WSW
7
2
WSW
7
Wave Graph
Metric surfscale
Energy kJ
27
17
29
98
151
207
225
103
23
22
32
198
120
117
179
156
109
353
504
394
Wind (km/h)
10
SW
10
WNW
5
N
10
WNW
10
W
20
NW
20
NNW
20
ESE
20
SE
0
S
15
S
10
WSW
5
W
15
N
10
NW
15
W
15
WSW
25
SSW
30
SW
30
SW
Wind State
cross-on
cross
cross-off
cross
cross
cross-off
cross-off
cross
cross
glassy
on
cross-on
cross
off
cross-off
cross
cross-on
on
on
on
High Tide
3:58AM5.60m
4:26PM6.04m
4:54AM6.18m
5:13PM6.68m
5:35AM6.82m
5:51PM7.33m
6:10AM7.43m
6:26PM7.92m
6:44AM7.97m
6:59PM8.39m
7:18AM8.39m
7:34PM8.69m
Low Tide
9:47PM2.97m
10:15AM2.80m
10:48PM2.43m
11:05AM2.21m
11:30PM1.81m
11:43AM1.61m
00:05AM1.22m
12:17PM1.05m
00:37AM0.70m
12:49PM0.58m
1:08AM0.30m
1:21PM0.24m
1:40AM0.07m
cloud
clear
part cloud
part cloud
rain showers
clear
clear
part cloud
part cloud
clear
clear
part cloud
part cloud
clear
part cloud
part cloud
clear
part cloud
cloud
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:01
7:03
7:05
7:07
7:07
7:09
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:19
7:15
7:14
7:12
7:08
7:07
7:05
 mm
1
4
Temp °C
18
17
18
18
18
16
16
14
15
18
17
16
16
13
14
14
15
16
16
16
Feels °C
19
17
19
18
18
13
13
12
13
18
16
16
16
10
11
12
12
11
11
11
  • 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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