Mewslade Bay Surf Break

Lat Long: 51.56° N 4.29° W

Mewslade Bay Surf Forecast and Surf Report

Issued: 12 pm 20 Jul 2026 (local time)

Forecast update in  hr  min

Today's Mewslade Bay sea temperature is
20.5° C
4.8° 

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 Jul 2026:

  • Best quality surf: Sunday 26 Jul, 1AM (local time) - 3ft (0.9m), 6s period, WSW swell with cross-offshore winds.
  • Most powerful swell: Sunday 26 Jul, 4PM (local time) - 4ft (1.2m), 6s period, W swell with 116 kJ wave energy.
  • Next surfable swell (1★+): Sunday 26 Jul, 1AM (local time) - 3ft (0.9m), 6s 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 (Jul 26) at 1AM. 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 1.2m 6s and forecast to arrive on Sunday (Jul 26) at 4PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Wednesday (Jul 22) at 10PM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+) 1AM (Sun 26th Jul)3ft (0.9m) 6s
Best Surf 1AM (Sun 26th Jul)3ft (0.9m) 6s
Most Powerful 4PM (Sun 26th Jul)4ft (1.2m) 6s

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


The Lowdown

Alright folks, Rusty here. Look, I’ve got to be straight with you – this forecast for Mewslade Bay is a tough one. We’re looking at a 16-day window that’s basically a flat spell. The first recommendation for any sort of surf doesn't come up until the 25th of July, and even then, it’s a long wait for very little reward. There’s a real gap of nothing from now until that Saturday morning.

Mewslade Bay is pretty exposed to the southwest, and the water is feeling much warmer than normal right now, sitting at 69°F and a whopping 9°F above the long-term average for this time of year – that’s very unusual.

The first hint of anything rideable shows up on the morning of Saturday the 25th. We’re talking a tiny 2ft swell from the west, but with a super short period of just 4 seconds and a cross-shore wind. The combined energy is a weak (16). It’s not good, folks. The afternoon sees a jump to 3ft from the west, period still short at 5 seconds, energy climbing to a moderate (48), but that cross-shore wind is still making it a messy, choppy mess.

Sunday the 26th is a bit of a tease. The morning shows 3ft from the west-southwest, period still short at 6 seconds, but with a clean cross-offshore wind from the north-northwest. Energy is moderate (66). It’s the best looking window in the whole two weeks, but still pretty weak. The afternoon drops back to 2ft as the wind swings more westerly.

Monday the 27th morning has a glassy calm, 2ft west swell, but the period is still short at 7 seconds, energy weak (26). Then we get a little spike on the 29th of July. Wednesday morning shows 3ft from the west, period short at 6 seconds, but the wind is a clean cross-off from the north-northwest. The energy is a moderate (136), which is the highest we’ll see. It’s the only day that breaks into triple-digit combined energy. The afternoon drops back to 3ft.

After that, it’s back to tiny, weak, and crossed-up conditions for the rest of the run. Swells stay under 2ft with periods all over the place, and the wind is mostly cross or cross-onshore.

Honestly, if you’re desperate for a paddle, the cleanest windows are the Sunday the 26th morning and the Wednesday the 29th morning. But with such short-period, weak swell, don’t expect any real power or shape. The rest of the time, with the wind and weak surf, this setup looks more interesting for a kite than a surfboard.

Keep the faith, but don’t hold your breath on this one.

Rusty.

Short Range Forecast

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

Days 4-6 Weather Summary

Mostly dry. Warm (max 23°C on Thu afternoon, min 14°C on Sat night). Wind will be generally light.

Monday
20
Tuesday
21
Wednesday
22
Thursday
23
Friday
24
Saturday
25
Sunday
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
0
0
0
0
0
0
0
0
0
1
0
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.1
W
9
0.1
SW
18
0.1
W
18
0.1
W
11
0.1
W
10
0.2
W
10
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
0.9
WSW
6
0.9
W
6
1.2
W
6
0.9
W
6
Wave Graph
Metric surfscale
Energy kJ
2
12
6
2
2
10
7
7
6
8
6
4
7
7
1
6
19
60
56
116
66
Wind (km/h)
5
ESE
15
NW
15
NNE
5
SE
15
WNW
25
N
20
N
15
WNW
15
NNE
0
SE
15
W
15
NNW
10
WNW
25
W
10
NNW
20
WNW
25
WNW
10
NNW
20
NW
20
NNW
15
NNW
Wind State
glassy
cross-off
off
glassy
cross
cross-off
off
cross
off
glassy
cross
cross-off
cross
cross
cross-off
cross
cross
cross-off
cross-off
cross-off
cross-off
High Tide
11:17AM7.27m
11:38PM7.27m
12:02PM6.78m
00:26AM6.68m
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
Low Tide
5:22PM1.45m
5:51AM1.66m
6:09PM1.94m
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
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
cloud
clear
cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:22
5:24
5:24
5:26
5:28
5:28
5:30
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:22
9:22
9:20
9:19
9:17
9:15
9:15
 mm
Temp °C
20
21
19
20
22
18
19
22
21
21
23
20
20
21
19
17
17
17
18
20
17
Feels °C
17
18
17
19
19
14
16
19
18
20
21
18
17
17
15
13
14
15
15
16
14
  • 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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