Crab Island surfForecast / Wales – Gower / UK

information circle12 Day Weather and Surf, issued 5 am Sunday 14 Dec 2025 GMT
Forecast update in hr  min  s Forecast update imminent
Crab Island surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Crab Island sea temperature is
10.2° C
(Which is slightly cooler than normal)


Best Forecast Surf Conditions for Crab Island this week:

The surf forecast for Crab Island over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Dec 15) at 9PM. The primary swell is predicted to be 1.6m and 13s period with a secondary swell of 0.2m and 4s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Crab Island in the next 12 days are 4.0m 17s and forecast to arrive on Friday (Dec 19) at 9AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Tuesday (Dec 16) at 12AM.

Wave TypeTime (GMT) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Mon 15th Dec)5ft (1.6m) 13s
Best Surf 9PM (Mon 15th Dec)5ft (1.6m) 13s
Most Powerful 9AM (Fri 19th Dec)13ft (4.0m) 17s

Table - best surf conditions forecast for Crab Island over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Heavy rain (total 34mm), heaviest during Sun night. Very mild (max 12°C on Sun afternoon, min 7°C on Tue afternoon). Winds decreasing (strong winds from the SSW on Sun night, calm by Tue night).

Days 3-6 Weather Summary Heavy rain (total 20mm), heaviest during Thu afternoon. Very mild (max 12°C on Thu afternoon, min 7°C on Wed morning). Winds decreasing (near gales from the SW on Thu night, light winds from the SW by Fri night).

Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Thursday
18
Friday
19
Saturday
20
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
0
3
3
3
3
3
0
0
0
0
0
0
0
2
3
1
0
0
Swell
Height Map
Wave Height (m) & direction (?)
2.5
WSW
3
WSW
3
WSW
2.4
WSW
1.7
WSW
1.4
WSW
1.4
WSW
1.4
WSW
1.3
WSW
1.1
WSW
1.9
WSW
3
WSW
1.8
WSW
1.7
WSW
3.5
SW
4
WSW
2.5
WSW
1.8
WSW
1.5
WSW
1.1
WSW
1.5
WSW
Period(s) (?)1111111113141414141371121201217151413128
Wave
Graph
(?)Metric surfscale
Energy kJ (?)14391694191313639957047527316154583821843283721773671828532041244757355264
Wind
(km/h)
30
SSW
35
SSW
45
SSW
35
SSW
5
SW
10
NNW
15
N
15
NNW
5
NW
25
SSW
30
SSW
30
SSW
35
SSE
55
S
55
SW
25
WSW
15
SW
10
SW
10
SSE
20
SSE
35
S
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
ononononcross-
on
offoffoffcross-
off
onononcross-
on
oncross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
on
High Tide
/ height (m)
1:59PM
7.61
2:37AM
7.54
2:59PM
7.76
3:33AM
7.84
3:52PM
7.99
4:22AM
8.17
4:39PM
8.23
5:04AM
8.47
5:20PM
8.43
5:42AM
8.70
5:58PM
8.58
6:18AM
8.86
6:35PM
8.67
Low Tide
/ height (m)
8:20PM
3.07
8:42AM
3.06
9:16PM
2.89
9:35AM
2.81
10:04PM
2.66
10:22AM
2.55
10:47PM
2.44
11:03AM
2.33
11:25PM
2.26
11:42AM
2.16
12:01AM
2.14
12:19PM
2.05
12:35AM
2.06
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunrise8:14--8:14--8:15--8:15--8:17--8:17--8:18--
Sunset-4:06--4:06--4:06--4:07--4:07--4:07--4:07-
cloud
light rain
heavy rain
mod rain
mod rain
cloud
cloud
part cloud
part cloud
cloud
cloud
mod rain
part cloud
light rain
light rain
rain showers
rain showers
clear
clear
clear
rain showers
Rain (mm)
-11797------10-5221---3
Temp. °C111212101098888101011121010109789
Feels °C (?)44339544313421-1566431
  • 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

Latest Updates

Eyeball surf reportRecent Eyeball Surf Reports for Wales - Gower

  1. West Coast Surf: ‘Porth Neigwl: It is likely to still b e a bit out of control as there hasn't been any sustained offshore wind to tidy it..’

    Hells Mouth (Porth Neigwl), 145 km away
Expand
<
>
View all

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Crab Island surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


false

Information about the Crab Island Surf forecast

The above surf forecast table for Crab Island provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Crab Island can be found by selecting the local surf guide option on the grey menu. Our Crab Island 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 (Crab Island) 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 Crab Island 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.

Crab Island is 8 km (5 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.

Nearest locationNearest
Nearest locationNearest
Nearest locationNearest