Mewslade Bay Surf Break

Lat Long: 51.56° N 4.29° W

Mewslade Bay Surf Forecast and Surf Report

Issued: 12 pm 26 Aug 2026 (local time)

Forecast update in  hr  min

Today's Mewslade Bay sea temperature is
19.5°C
3.2° 

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 26 Aug 2026:

  • Most powerful swell: Monday 31 Aug, 1AM (local time) - 10ft (3.0m), 9s period, WSW swell with 1,320 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 3.0m 9s and forecast to arrive on Monday (Aug 31) at 1AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Thursday (Aug 27) at 7AM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 1AM (Mon 31st Aug)10ft (3.0m) 9s

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


The Lowdown

Alright folks, Rusty here. Let's have a look at what's cooking for the next couple of weeks.

We’re kicking off with a pretty grim start, I’m not gonna lie. The water is sitting at 67° which is a massive 6° warmer than usual for this time of year - that’s a real anomaly, feels like a warm bath out there. But the surf? For the first week or so, it’s a write-off. There’s a long stretch of poor conditions with onshore winds and messy chop. The swell is small and weak, mostly under 3 ft, and the energy readings are pathetic - down in the 6 to 27 range. You’re better off staying on the couch.

We finally get a bit of a pulse around the 31st of August with a 7 ft W/SW swell, but the wind is still a problem - fresh cross-shore with lumpy chop. That keeps the conditions poor. The energy is moderate at 708, but you’d be fighting a losing battle.

Things start to look up on the 2nd of September. It’s small, only 4 ft from the WSW, but the wind goes glassy in the morning. The energy is weak at 157, but it’s clean. It’s not gonna blow your mind, but it’s surfable.

The real standout window is shaping up for the 5th and 10th of September. On the 5th, Saturday morning, Mewslade Bay (Gower) gets a clean 5 ft W/SW groundswell with a 11-second period, and light NNW cross-offshore winds. The energy is strong at 561, and the conditions are clean. This is the best bet in the near term - a proper autumn groundswell with clean lines.

Then, hold onto your boards, the 10th of September delivers the goods. Thursday morning sees a 6 ft WSW swell, with a 10-second period, and light NE offshore winds. The energy is very strong at 1252. That’s a serious pulse. It’s clean, offshore, and sets will have some punch. This is one for the experienced crew, as the swell is solid and the period is decent. The afternoon goes glassy with a 8 ft swell, but it’s a shorter period, so it might be a bit fat and close out at the beach.

Overall, it’s a slow start, but patience pays off. The 5th and 10th are your days to mark on the calendar. The 10th is the standout, but it’s still a way off, so keep an eye on the forecasts.

Rusty.

Short Range Forecast

Moderate rain (total 18mm), heaviest on Fri night. Warm (max 23°C on Wed afternoon, min 17°C on Thu night). Winds increasing (calm on Wed afternoon, fresh winds from the SSE by Fri night).

Days 4-6 Weather Summary

Heavy rain (total 28mm), heaviest during Sun afternoon. Very mild (max 18°C on Sat morning, min 15°C on Sun night). Winds decreasing (near gales from the SSW on Sat morning, moderate winds from the WSW by Mon afternoon).

Wednesday
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
Monday
31
Tuesday
1
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)
0.3
W
9
0.3
W
8
0.3
W
8
0.3
W
7
0.2
W
7
0.8
SW
4
1.1
SW
6
1.3
WSW
7
1.6
WSW
7
1.8
SW
6
2.1
SW
8
2.4
WSW
10
1.7
WSW
9
2.1
SW
8
3
WSW
9
2.4
WSW
9
2
WSW
9
1.5
WSW
9
2
WSW
7
1.5
WSW
7
1
W
7
Wave Graph
Metric surfscale
Energy kJ
13
12
10
10
4
18
92
154
236
282
525
1080
465
490
1320
958
673
368
415
228
106
Wind (km/h)
20
SE
5
ENE
20
E
20
SE
15
WSW
20
WSW
25
WSW
25
WSW
20
WSW
40
S
50
SW
30
W
30
SSW
30
SW
35
W
25
WNW
20
W
35
WSW
30
WNW
30
W
25
WNW
Wind State
cross
glassy
cross-off
cross
cross-on
cross-on
cross-on
cross-on
cross-on
on
cross-on
cross-on
on
cross-on
cross
cross
cross-on
cross-on
cross
cross
cross-off
High Tide
6:23PM7.25m
6:42AM7.30m
6:58PM7.78m
7:15AM7.75m
7:31PM8.20m
7:48AM8.10m
8:03PM8.47m
8:20AM8.30m
8:36PM8.58m
8:54AM8.35m
9:11PM8.50m
9:30AM8.21m
9:48PM8.23m
Low Tide
12:15PM1.66m
00:37AM1.35m
12:49PM1.17m
1:10AM0.90m
1:21PM0.77m
1:41AM0.55m
1:52PM0.48m
2:11AM0.34m
2:22PM0.33m
2:42AM0.28m
2:54PM0.34m
3:14AM0.38m
3:28PM0.51m
3:49AM0.66m
clear
clear
rain showers
light rain
part cloud
thunderstorm
rain showers
rain showers
rain showers
light rain
rain showers
clear
thunderstorm
thunderstorm
thunderstorm
part cloud
part cloud
light rain
rain showers
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:18
6:20
6:22
6:22
6:24
6:26
6:28
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:17
8:15
8:13
8:10
8:08
8:07
8:04
 mm
1
3
3
3
3
5
5
2
2
12
3
4
4
Temp °C
19
23
21
18
18
18
18
18
18
18
18
18
18
17
16
15
16
17
17
17
17
Feels °C
18
23
20
17
17
16
15
15
15
12
11
12
14
12
9
11
12
12
12
12
12
  • 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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