Mewslade Bay Surf Break

Lat Long: 51.56° N 4.29° W

Mewslade Bay Surf Forecast and Surf Report

Issued: 6 am 23 Jul 2026 (local time)

Forecast update in  hr  min

Today's Mewslade Bay sea temperature is
20.4° C
4.5° 

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 23 Jul 2026:

  • Most powerful swell: Sunday 26 Jul, 10AM (local time) - 4.5ft (1.4m), 7s period, WSW swell with 197 kJ wave energy.

Best Forecast Surf Conditions for Mewslade Bay this week:

The most powerful waves expected at Mewslade Bay in the next 16 days are 1.4m 7s and forecast to arrive on Sunday (Jul 26) at 10AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Thursday (Jul 23) at 7PM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful10AM (Sun 26th Jul)4.5ft (1.4m) 7s

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


The Lowdown

Alright, let me be straight with you. I’ve looked over the whole 16-day window for Mewslade Bay, and honestly, it’s a tough run. There’s no real standout session in there, and for big chunks of time, you’d be better off doing something else. Let me walk you through it.

The forecast starts off with a flat spell. Thursday the 23rd and Friday the 24th are dead calm – we’re talking 0.3 ft of swell, glassy conditions but absolutely no waves to ride. That carries on into Saturday morning the 25th. Then Saturday afternoon sees a tiny bump to 3 ft, but the period is a shocking 5 seconds and it’s cross-shore wind. The wave energy is weak (44), and it’s still labelled as poor surf. Not worth wetting a wetsuit.

Sunday the 26th brings the biggest swell of the whole outlook – 5 ft from the WSW with a short period of 7 seconds. The combined wave energy jumps to moderate (197), but the wind is a fresh cross-shore at 19 mph, making for lumpy, messy conditions. The water temperature is 69°, which is 8° warmer than normal for this time of year – very unusual, like a warm bath, but it won’t help the chop. This is really only for the keenest locals who don’t mind a wrestle.

From Monday the 27th onward, it drops back down. Monday morning has 3 ft and cross-shore wind, still messy. The rest of that week and into early August, the swell bounces between 0.7 ft and 4 ft, but the wind is nearly always cross or onshore, often moderate to fresh. The wave energy stays mostly weak (single or low double digits), and the consistency is poor. There’s a few glassy moments – like Wednesday morning the 29th with 0.7 ft and no wind – but without swell, that’s just a flat, pretty ocean.

Late in the window, around Sunday the 2nd of August, there’s another attempt at a pulse: 4 ft from the WSW, period 8 seconds, energy at 191 (moderate). But again, cross-shore winds spoil it, and the surf quality is rated poor. Monday the 3rd drops back to 2 ft, and from there it fades to a whisper into the second week.

There is no point in the 16 days where the stars align for a truly good surf at Mewslade Bay. The swell is either too small, too short-period, or the wind is on it. The break itself is exposed to SW swell, which is the right direction, but nothing comes together cleanly. For an intermediate spot that’s fairly consistent in general, this is a blank run – it happens, and forecasts can change, but right now there’s nothing to get excited about.

If you’re desperate, the best of a bad bunch is Sunday the 26th of July morning – 5 ft, some energy, but bring a board you don’t mind scratching in the lumpy cross-chop. Or wait for the next system.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 22°C on Thu afternoon, min 15°C on Thu night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 23°C on Tue afternoon, min 13°C on Sun night). Winds decreasing (fresh winds from the WNW on Sun afternoon, calm by Mon night).

Thursday
23
Friday
24
Saturday
25
Sunday
26
Monday
27
Tuesday
28
Wednesday
29
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
0
0
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)
0.2
W
9
0.1
W
14
0.1
W
14
0.1
SW
13
0.1
SW
13
0.1
W
8
0.4
WNW
4
1
W
5
1
WSW
6
1.4
WSW
7
1.4
W
7
1.1
W
7
0.8
W
6
0.8
WSW
6
0.4
WSW
6
0.3
WSW
6
0.4
W
5
0.2
W
5
0.1
W
11
0.7
W
4
0.2
W
10
Wave Graph
Metric surfscale
Energy kJ
8
4
4
7
7
1
6
44
85
197
192
110
51
48
12
6
8
2
2
13
9
Wind (km/h)
5
N
15
NW
15
NNW
5
SE
20
W
10
WNW
20
W
25
W
20
WNW
30
WNW
30
WNW
25
NW
10
WNW
25
WSW
5
WSW
10
SSE
10
WNW
5
NNW
5
NNW
20
WNW
15
NW
Wind State
glassy
cross-off
cross-off
glassy
cross
cross
cross
cross
cross
cross
cross
cross-off
cross
cross-on
cross-on
cross-on
cross
glassy
glassy
cross
cross-off
High Tide
1:54PM5.96m
2:29AM5.85m
3:07PM5.83m
3:44AM5.81m
4:19PM5.96m
4:51AM6.02m
5:18PM6.29m
5:43AM6.38m
6:05PM6.72m
6:26AM6.77m
6:46PM7.16m
7:04AM7.15m
7:22PM7.55m
Low Tide
8:09PM2.70m
8:45AM2.76m
9:24PM2.78m
9:58AM2.73m
10:35PM2.61m
11:02AM2.48m
11:32PM2.28m
11:53AM2.12m
00:19AM1.89m
12:35PM1.72m
00:58AM1.50m
1:12PM1.35m
1:34AM1.18m
part cloud
clear
part cloud
clear
clear
part cloud
part cloud
cloud
cloud
part cloud
part cloud
clear
clear
clear
part cloud
part cloud
clear
clear
clear
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:26
5:28
5:28
5:30
5:31
5:33
5:35
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:19
9:17
9:15
9:15
9:13
9:12
9:10
 mm
Temp °C
21
22
18
19
21
18
17
16
17
17
18
18
16
17
16
19
23
22
23
24
21
Feels °C
20
19
16
17
17
15
13
12
16
12
12
14
12
12
15
18
20
20
20
19
18
  • 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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