Mewslade Bay Surf Break

Lat Long: 51.56° N 4.29° W

Mewslade Bay Surf Forecast and Surf Report

Issued: 6 am 20 Sep 2026 (local time)

Forecast update in  hr  min

Today's Mewslade Bay sea temperature is
17.9°C
2.4° 

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: Wednesday 23 Sep, 1AM (local time) - 2.5ft (0.8m), 11s period, W swell with cross-offshore winds.
  • Most powerful swell: Saturday 26 Sep, 10AM (local time) - 3.5ft (1.1m), 12s period, W swell with 339 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 12s and forecast to arrive on Saturday (Sep 26) at 10AM. 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 3s 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 Surf 1AM (Wed 23rd Sep)2.5ft (0.8m) 11s
Most Powerful10AM (Sat 26th Sep)3.5ft (1.1m) 12s

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 Sun morning). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 20°C on Fri afternoon, min 11°C on Wed night). Winds increasing (light winds from the ENE on Wed night, fresh winds from the ESE by Fri 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
0
0
1
0
0
0
0
0
0
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
11
0.8
W
11
0.7
WSW
14
0.6
W
13
0.6
W
12
0.3
W
11
0.3
W
11
0.9
SE
4
1.1
SE
4
0.7
W
12
0.5
W
11
1.1
W
12
0.8
WSW
11
0.8
WSW
11
Wave Graph
Metric surfscale
Energy kJ
114
86
40
27
24
17
19
93
149
210
125
103
22
20
22
40
139
64
339
164
150
Wind (km/h)
15
NW
10
W
5
NNE
5
SW
10
WSW
5
NW
5
NNW
10
W
5
NNW
15
WNW
25
NNW
10
ENE
35
ESE
20
ESE
25
ESE
35
ESE
20
SE
15
ESE
15
E
0
SE
20
WNW
Wind State
cross-off
cross
glassy
cross-on
cross-on
cross-off
glassy
cross
cross-off
cross
cross-off
cross-off
cross
cross
cross
cross
cross
cross
cross-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
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
part cloud
part cloud
clear
clear
part cloud
clear
clear
clear
clear
clear
part cloud
clear
part cloud
rain showers
<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
1
Temp °C
14
15
14
16
17
17
18
19
19
16
15
14
13
17
15
17
20
16
16
17
15
Feels °C
11
13
12
15
17
17
18
19
19
15
11
11
8
14
12
12
16
14
14
17
13
  • 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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