Mewslade Bay Surf Break

Lat Long: 51.56° N 4.29° W

Mewslade Bay Surf Forecast and Surf Report

Issued: 12 am 20 Sep 2026 (local time)

Forecast update in  hr  min

Today's Mewslade Bay sea temperature is
18.0°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 20 Sep 2026:

  • Best quality surf: Friday 25 Sep, 10PM (local time) - 3.5ft (1.1m), 16s period, W swell with cross-offshore winds.
  • Most powerful swell: Friday 25 Sep, 10PM (local time) - 3.5ft (1.1m), 16s period, W swell with 589 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 1.1m 16s and forecast to arrive on Friday (Sep 25) at 10PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Wednesday (Sep 23) at 7PM.

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)3.5ft (1.1m) 16s
Most Powerful10PM (Fri 25th Sep)3.5ft (1.1m) 16s

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


Short Range Forecast

Mostly dry. Very mild (max 19°C on Tue afternoon, min 14°C on Sat night). Winds decreasing (fresh winds from the W on Sat night, calm by Sun night).

Days 4-6 Weather Summary

Mostly dry. Very mild (max 19°C on Fri afternoon, min 10°C on Wed night). Winds increasing (calm on Tue night, fresh winds from the ESE by Thu morning).

Sunday
20
Monday
21
Tuesday
22
Wednesday
23
Thursday
24
Friday
25
Saturday
26
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
2
2
0
1
0
0
0
0
2
2
2
1
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.1
WSW
7
0.9
WSW
7
0.6
WSW
7
0.5
WSW
7
0.5
W
7
0.4
WSW
7
0.4
WSW
8
0.6
W
12
0.8
W
11
0.6
W
14
0.6
W
13
0.7
W
12
0.3
W
11
0.3
W
11
0.3
WSW
10
0.4
WSW
18
0.7
WSW
16
1
W
14
0.8
WSW
13
0.7
WSW
12
0.6
W
11
Wave Graph
Metric surfscale
Energy kJ
114
86
40
27
24
17
19
101
149
146
125
139
21
20
19
107
276
429
225
145
83
Wind (km/h)
15
NW
15
W
0
NNE
5
S
10
W
5
NNW
0
NNE
10
WNW
5
NW
10
NW
25
N
15
ENE
35
ESE
25
ESE
25
SE
35
ESE
5
SSE
5
N
10
NE
5
S
5
WNW
Wind State
cross-off
cross-on
glassy
glassy
cross-on
glassy
glassy
cross
cross-off
cross-off
cross-off
cross-off
cross
cross
cross
cross
glassy
off
off
glassy
cross
High Tide
1:27PM5.41m
2:25AM5.26m
3:14PM5.52m
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
Low Tide
6:58AM3.22m
8:06PM3.24m
8:54AM3.23m
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
part cloud
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
part cloud
clear
clear
clear
clear
cloud
cloud
cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:58
7:00
7:01
7:03
7:05
7:07
7:07
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:21
7:19
7:15
7:14
7:12
7:08
7:07
 mm
Temp °C
14
15
14
16
17
17
17
19
18
16
16
14
13
17
15
18
19
16
16
17
16
Feels °C
11
12
12
15
16
17
17
18
19
15
12
11
7
14
12
14
18
16
15
17
16
  • 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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