Mewslade Bay Surf Break

Lat Long: 51.56° N 4.29° W

Mewslade Bay Surf Forecast and Surf Report

Issued: 12 pm 16 Sep 2026 (local time)

Forecast update in  hr  min

Today's Mewslade Bay sea temperature is
18.1°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 16 Sep 2026:

  • Best quality surf: Tuesday 22 Sep, 4PM (local time) - 1.5ft (0.5m), 17s period, W swell with glassy winds.
  • Most powerful swell: Friday 18 Sep, 7PM (local time) - 8ft (2.5m), 7s period, WSW swell with 686 kJ wave energy.
  • Next surfable swell (1★+): Sunday 20 Sep, 4AM (local time) - 4.5ft (1.3m), 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 Sunday (Sep 20) at 4AM. The primary swell is predicted to be 1.3m and 7s period with a secondary swell of 0.1m and 14s. 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 2.5m 7s and forecast to arrive on Friday (Sep 18) at 7PM. Winds are predicted to be cross-onshore at the time the swell arrives.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+) 4AM (Sun 20th Sep)4.5ft (1.3m) 7s
Best Surf 4PM (Tue 22nd Sep)1.5ft (0.5m) 17s
Most Powerful 7PM (Fri 18th Sep)8ft (2.5m) 7s

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


Short Range Forecast

Light rain (total 5mm), mostly falling on Wed night. Very mild (max 17°C on Fri afternoon, min 15°C on Wed morning). Winds increasing (light winds from the NW on Wed morning, strong winds from the SW by Fri afternoon).

Days 4-6 Weather Summary

Light rain (total 2mm), mostly falling on Sat morning. Very mild (max 17°C on Sat morning, min 13°C on Sat night). Winds decreasing (fresh winds from the WSW on Sat morning, calm by Sun night).

Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
Monday
21
Tuesday
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)
1
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
2
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.4
W
10
1.2
W
10
1.6
WSW
6
1.8
W
7
1.8
W
7
1.6
W
7
1.5
W
7
2.1
WSW
6
2.1
WSW
8
2.3
WSW
7
1.9
WSW
7
1.4
WSW
7
1
WSW
7
0.9
WSW
8
0.7
WSW
7
0.6
WSW
7
0.5
W
7
0.4
WSW
7
0.5
W
10
0.5
W
17
0.7
W
11
Wave Graph
Metric surfscale
Energy kJ
384
302
179
343
348
257
212
341
494
545
400
186
105
94
52
37
25
15
52
144
113
Wind (km/h)
20
NW
25
W
35
WSW
30
WNW
30
W
25
WNW
30
WSW
45
SW
35
WSW
30
WSW
25
W
25
WNW
10
NW
10
WSW
5
W
5
SW
10
NW
5
NNE
10
ESE
5
W
5
ENE
Wind State
cross-off
cross
cross-on
cross
cross
cross
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross-off
cross-on
glassy
glassy
cross-off
glassy
cross
glassy
glassy
High Tide
10:15PM7.24m
10:31AM6.98m
10:52PM6.59m
11:11AM6.37m
11:36PM5.96m
12:03PM5.79m
00:42AM5.44m
1:27PM5.41m
2:25AM5.26m
3:14PM5.52m
3:58AM5.60m
4:26PM6.04m
Low Tide
3:58PM1.23m
4:14AM1.59m
4:33PM1.81m
4:50AM2.19m
5:15PM2.43m
5:38AM2.77m
6:18PM2.98m
6:58AM3.22m
8:06PM3.24m
8:54AM3.23m
9:47PM2.97m
10:15AM2.80m
10:48PM2.43m
part cloud
part cloud
rain showers
part cloud
part cloud
part cloud
cloud
rain showers
rain showers
rain showers
part cloud
part cloud
clear
clear
clear
part cloud
part cloud
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:52
6:54
6:54
6:56
6:58
7:00
7:01
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:30
7:28
7:25
7:22
7:21
7:19
7:15
 mm
3
1
1
2
Temp °C
15
15
16
15
16
15
16
17
17
17
17
16
14
15
15
16
17
17
17
19
19
Feels °C
12
10
9
9
9
9
11
12
12
13
13
13
13
13
14
17
18
17
17
20
19
  • 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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