Mewslade Bay Surf Break

Lat Long: 51.56° N 4.29° W

Mewslade Bay Surf Forecast and Surf Report

Issued: 12 am 22 Jul 2026 (local time)

Forecast update in  hr  min

Today's Mewslade Bay sea temperature is
20.4° C
4.7° 

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 22 Jul 2026:

  • Best quality surf: Sunday 26 Jul, 10PM (local time) - 3ft (0.9m), 6s period, W swell with cross-offshore winds.
  • Most powerful swell: Sunday 26 Jul, 4AM (local time) - 3.5ft (1.0m), 6s period, W swell with 81 kJ wave energy.
  • Next surfable swell (1★+): Sunday 26 Jul, 10PM (local time) - 3ft (0.9m), 6s 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 Sunday (Jul 26) at 10PM. The primary swell is predicted to be 0.9m and 6s period. 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 1.0m 6s and forecast to arrive on Sunday (Jul 26) at 4AM. 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 (Jul 22) at 7PM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+)10PM (Sun 26th Jul)3ft (0.9m) 6s
Best Surf10PM (Sun 26th Jul)3ft (0.9m) 6s
Most Powerful 4AM (Sun 26th Jul)3.5ft (1.0m) 6s

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


The Lowdown

Right, grab a coffee, let’s have a look at what’s coming up for Mewslade Bay. Truth be told, it’s a bit of a slow burner through the next week and a half. Most of the action is small and pretty weak, but there’s a pulse of proper energy trying to show itself near the start of August. No standouts in the first week, so we’ll be waiting.

For the first few days, from Wednesday the 22nd through to the end of July, it’s all ankle-snappers and knee-high dribble. Swell heights are barely scraping 0.7 ft to 3 ft, with periods mostly under 8 seconds, so it’s weak, short-period windswell. The combined energy is low, mostly under 100 – a paltry 7 on Wednesday morning, for example. The wind is a mixed bag, but there are a few glassy windows. Thursday morning the 23rd sees a glass-off with the wind dropping to zero, but the swell is just 0.3 ft from the SW with a 15-second period – that’s a long period for such a tiny wave, meaning it’ll be a long wait between sets for barely a ripple. Friday morning the 24th also goes glassy with a 0.3 ft SW swell, but again, it’s just not enough to push a wave. The water temperature anomaly is about average for the time of year, nothing unusual to report.

The real shift comes on Saturday the 1st of August. That’s when the energy jumps. Overnight the combined energy rockets to 1034, a moderate-to-strong reading, with a 6 ft swell from the WSW. The period is 9 seconds, so it’s a bit more organised. The problem? The wind is howling straight onshore from the south at 16 mph in the morning, and even stronger from the SW at 22 mph in the afternoon with rain showers. That’ll smash it up. It’s too big for beginners at 6 ft, and with that onshore wind, it’s going to be a mess. Honestly, that setup looks more interesting for kite surfing than paddle surfing.

Sunday the 2nd of August drops a little to 6 ft to 6 ft from the W, period 8 seconds, but the wind stays cross or cross-onshore at 12-16 mph, so it’s still lumpy and choppy. The energy is still strong at 441 and 346, but the quality is poor for a paddle surfer.

The only glimmer of something decent comes on Monday the 3rd of August morning. The swell has dropped right back to 2 ft from the WSW, but the wind goes glassy – five knots from the NNE, which is cross-offshore for Mewslade. That’s clean, but the wave is tiny. Combined energy is only 53. It’s a long wait for a small, clean one. Tuesday the 4th of August morning is also flat calm with zero wind and a glassy surface, but the swell is only 1.0 ft.

So, the honest truth: there’s no standout surf in this 16-day window. The best of a bad bunch is probably Monday the 3rd of August morning for the cleanest conditions, but you’ll be chasing knee-high waves. The bigger swell on the 1st and 2nd is too windy and onshore. Keep an eye on the forecasts, things can change, but for now, it’s a flat spell with a bit of a windy hiccup in the middle.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 22°C on Wed afternoon, min 13°C on Tue night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Very mild (max 19°C on Fri night, min 15°C on Sat night). Winds decreasing (fresh winds from the NW on Sat night, light winds from the NNW by Sun night).

Wednesday
22
Thursday
23
Friday
24
Saturday
25
Sunday
26
Monday
27
Tuesday
28
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
10
0.2
W
9
0.2
W
9
0.2
W
9
0.2
W
8
0.1
W
14
0.1
SW
13
0.1
SW
13
0.1
W
8
0.1
SW
12
0.8
W
4
1
W
6
0.9
WSW
6
0.9
W
6
0.8
W
6
0.7
WSW
6
0.9
WSW
6
0.8
WSW
5
0.7
W
6
0.6
W
5
0.6
W
5
Wave Graph
Metric surfscale
Energy kJ
7
7
6
8
6
4
7
7
1
6
18
76
64
58
52
39
48
37
30
20
17
Wind (km/h)
15
N
20
NW
15
NNE
0
ESE
15
W
15
NNW
5
N
25
W
5
NNW
15
WNW
25
W
20
WNW
25
NW
25
WNW
10
NW
10
WSW
15
WSW
10
SW
10
SW
15
W
10
WNW
Wind State
cross-off
cross-off
off
glassy
cross-on
cross-off
glassy
cross
cross-off
cross
cross-on
cross
cross-off
cross
cross-off
cross-on
cross-on
cross-on
on
cross
cross
High Tide
12:53PM6.31m
1:21AM6.18m
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
Low Tide
6:39AM2.15m
7:04PM2.39m
7:36AM2.55m
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
part cloud
clear
clear
clear
clear
part cloud
clear
clear
part cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
part cloud
clear
clear
cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:24
5:26
5:28
5:28
5:30
5:31
5:33
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:20
9:19
9:17
9:15
9:15
9:13
9:12
 mm
Temp °C
19
22
20
20
22
19
20
22
19
18
18
18
17
18
19
17
19
18
19
19
18
Feels °C
16
18
17
19
20
16
17
18
16
15
14
16
11
13
17
15
16
17
18
16
17
  • Map Icons:
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  • 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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