Mewslade Bay surf break

Mewslade Bay surfForecast / Wales – Gower / UK

information circle12 Day Weather and Surf, issued 11 am Saturday 20 Dec 2025 GMT
Forecast update in hr  min  s Forecast update imminent
Mewslade Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Mewslade Bay sea temperature is
10.2° C
(Which is slightly cooler than normal)


Best Forecast Surf Conditions for Mewslade Bay this week:

The surf forecast for Mewslade Bay over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Dec 21) at 9PM. The primary swell is predicted to be 1.5m and 14s period. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Mewslade Bay in the next 12 days are 2.5m 16s and forecast to arrive on Sunday (Dec 21) at 6AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 5s period and expected on Wednesday (Dec 24) at 9PM.

Wave TypeTime (GMT) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Sun 21st Dec)5ft (1.5m) 14s
Best Surf 9PM (Sun 21st Dec)5ft (1.5m) 14s
Most Powerful 6AM (Sun 21st Dec)8ft (2.5m) 16s

Table - best surf conditions forecast for Mewslade Bay over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Moderate rain (total 13mm), heaviest on Sat night. Very mild (max 11°C on Sun night, min 8°C on Sun morning). Winds decreasing (strong winds from the SE on Sat afternoon, light winds from the NE by Mon night).

Days 3-6 Weather Summary Mostly dry. Mild temperatures (max 9°C on Tue morning, min 1°C on Wed night). Winds increasing (light winds from the N on Tue morning, fresh winds from the E by Wed night).

Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
3
2
2
1
0
1
1
1
1
0
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
1.6
WSW
2
WSW
2
WSW
2.5
WSW
2
WSW
1.4
WSW
1.1
WSW
0.9
WSW
0.8
WSW
0.7
WSW
0.6
WSW
0.5
W
0.4
WSW
0.4
WSW
0.4
WSW
0.3
WSW
0.2
W
0.3
WSW
0.4
WSW
0.4
WSW
0.4
WSW
Period(s) (?)8101115151413121111109121312111212121212
Wave
Graph
(?)Metric surfscale
Energy kJ (?)368836991270516447783842031381218345515950241229515146
Wind
(km/h)
35
SSE
40
SE
30
S
20
E
25
ENE
25
ENE
25
E
25
ESE
15
ENE
10
N
15
NNE
20
NNE
35
ENE
35
ENE
40
E
25
ENE
30
NE
35
ENE
30
ENE
30
ENE
25
ENE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on
crosscross-
on
cross-
off
cross-
off
cross-
off
cross-
off
crosscross-
off
offoffoffcross-
off
cross-
off
cross-
off
cross-
off
offcross-
off
cross-
off
cross-
off
cross-
off
High Tide
/ height (m)
6:31PM
7.37
6:48AM
7.61
7:07PM
7.45
7:25AM
7.69
7:43PM
7.45
8:01AM
7.70
8:20PM
7.38
8:39AM
7.63
8:58PM
7.26
9:18AM
7.50
9:40PM
7.09
10:01AM
7.32
10:27PM
6.90
Low Tide
/ height (m)
12:21PM
1.27
12:35AM
1.24
12:57PM
1.17
1:10AM
1.17
1:32PM
1.15
1:45AM
1.17
2:08PM
1.19
2:20AM
1.24
2:45PM
1.28
2:57AM
1.36
3:25PM
1.41
3:38AM
1.54
4:09PM
1.56
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Sunrise8:18--8:19--8:19--8:21--8:21--8:22--8:22--
Sunset-4:08--4:08--4:09--4:09--4:10--4:10--4:12-
clear
part cloud
mod rain
cloud
light rain
light rain
part cloud
cloud
part cloud
part cloud
part cloud
cloud
clear
cloud
clear
clear
part cloud
cloud
part cloud
cloud
cloud
Rain (mm)
--8-14---------------
Temp. °C109109101191010996552454335
Feels °C (?)202345456651-3-4-7-4-3-5-5-5-3
  • 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 12 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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