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Crab Island Surf Forecast
/ Wales – Gower (29 surf breaks) /
Crab Island surfForecast / Wales – Gower / UK
12 Day Weather and Surf, issued 6 pm Friday 18 Apr 2025 BST
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 Sunday (Apr 20) at 4AM. The primary swell is predicted to be 0.5m and 12s period with a secondary swell of 0.3m and 7s. Another secondary swell of 0.3m and 3s is also forecast. 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 1.6m 12s and forecast to arrive on Monday (Apr 21) at 10PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Wednesday (Apr 23) at 4PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Sun 20th Apr) | 1.5ft (0.5m) 12s |
| Best Surf | 10PM (Wed 23rd Apr) | 3.5ft (1.1m) 9s |
| Most Powerful | 10PM (Mon 21st Apr) | 5ft (1.6m) 12s |
Table - best surf conditions forecast for Crab Island over the next 12 days.
Fri 18 | Saturday 19 | Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | Thursday 24 | Friday 25 | Saturday 26 | Sunday 27 | Monday 28 | Tuesday 29 | Wed 30 | ||||||||||||||||||||||||
| PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |
Rating (10 max) | ||||||||||||||||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  |  |  |  |  |  | |||||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||||||||||||||
| Period(s) (?) | 7 | 7 | 13 | 13 | 12 | 12 | 12 | 11 | 10 | 10 | 11 | 11 | 6 | 8 | 8 | 9 | 9 | 10 | 11 | 12 | 12 | 12 | 12 | 13 | 12 | 12 | 11 | 10 | 10 | 10 | 11 | 11 | 10 | 10 | 9 | 9 |
Wave (?)Graph  | ||||||||||||||||||||||||||||||||||||
| Energy (?) | 33 | 37 | 102 | 90 | 76 | 47 | 67 | 59 | 35 | 41 | 308 | 379 | 122 | 238 | 275 | 249 | 141 | 115 | 117 | 186 | 263 | 271 | 303 | 350 | 308 | 224 | 121 | 85 | 71 | 73 | 86 | 123 | 136 | 100 | 86 | 57 |
Wind (km/h) | ||||||||||||||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross | cross | cross | cross | cross | cross- on | cross- on | glass | cross | cross | on | on | cross- on | cross- off | cross- off | off | cross- off | cross- off | cross | cross | cross- on | cross | cross- off | cross- on | cross- off | glass | cross | cross- off | cross | cross | cross- off | cross- off | cross | glass | cross- on |
High Tide / height (m) | 10:03PM 8.12 | 10:21AM 7.80 | 10:42PM 7.67 | 11:09AM 7.32 | 11:44PM 7.24 | 12:26PM 6.94 | 1:20AM 7.08 | 2:05PM 6.98 | 2:50AM 7.44 | 3:27PM 7.50 | 3:59AM 8.10 | 4:31PM 8.19 | 4:56AM 8.78 | 5:24PM 8.84 | 5:47AM 9.34 | 6:12PM 9.35 | 6:35AM 9.72 | 6:58PM 9.68 | 7:21AM 9.91 | 7:42PM 9.83 | 8:06AM 9.89 | 8:25PM 9.78 | 8:51AM 9.66 | |||||||||||||
Low Tide / height (m) | 4:03AM 2.52 | 4:15PM 2.78 | 4:47AM 2.97 | 5:04PM 3.26 | 5:58AM 3.37 | 6:34PM 3.62 | 7:45AM 3.37 | 8:27PM 3.42 | 9:11AM 2.87 | 9:44PM 2.79 | 10:15AM 2.19 | 10:42PM 2.07 | 11:08AM 1.55 | 11:31PM 1.46 | 11:56AM 1.06 | 12:17AM 1.01 | 12:41PM 0.76 | 1:02AM 0.76 | 1:25PM 0.65 | 1:45AM 0.70 | 2:07PM 0.73 | 2:28AM 0.84 | ||||||||||||||
Fri 18 | Saturday 19 | Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | Thursday 24 | Friday 25 | Saturday 26 | Sunday 27 | Monday 28 | Tuesday 29 | Wed 30 | ||||||||||||||||||||||||
| Sunrise | - | - | 6:11 | - | - | 6:09 | - | - | 6:07 | - | - | 6:05 | - | - | 6:03 | - | - | 6:01 | - | - | 6:00 | - | - | 5:58 | - | - | 5:56 | - | - | 5:54 | - | - | 5:52 | - | - | 5:50 |
| Sunset | 8:15 | - | - | 8:17 | - | - | 8:20 | - | - | 8:21 | - | - | 8:22 | - | - | 8:24 | - | - | 8:25 | - | - | 8:28 | - | - | 8:30 | - | - | 8:30 | - | - | 8:32 | - | - | 8:35 | - | - |
 |  | |  |  |  | |  | | |  | | | | |  | | | | |  | | | | |  | | | | | | | | | | | |
Rain (mm) | 4 | 10 | 2 | - | - | - | - | 11 | 2 | - | - | 2 | 2 | 32 | 4 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 10 | 11 | 9 | 11 | 11 | 11 | 10 | 10 | 9 | 11 | 10 | 10 | 13 | 11 | 10 | 14 | 11 | 10 | 11 | 10 | 8 | 9 | 10 | 10 | 10 | 10 | 10 | 11 | 12 | 12 | 13 | 12 | 14 | 15 | 13 | 13 |
| Feels °C (?) | 2 | 3 | 2 | 5 | 6 | 5 | 5 | 7 | 6 | 5 | 7 | 5 | 9 | 2 | 1 | 9 | 7 | 5 | 8 | 8 | 5 | 6 | 7 | 7 | 6 | 7 | 7 | 6 | 10 | 8 | 10 | 9 | 12 | 13 | 11 | 11 |
Short Range Forecast: Heavy rain (total 29mm), heaviest during Sun night. Very mild (max 11°C on Fri night, min 8°C on Sun night). Winds decreasing (strong winds from the ESE on Fri afternoon, calm by Mon morning). | Days 3-6 Weather Summary Heavy rain (total 41mm), heaviest during Tue night. Very mild (max 14°C on Wed afternoon, min 9°C on Mon night). Winds increasing (light winds from the WSW on Mon night, strong winds from the SE by Tue night). | Days 6-9 Weather Summary Mostly dry. Very mild (max 11°C on Thu afternoon, min 6°C on Thu night). Wind will be generally light. | Long Range Forecast: Mostly dry. Very mild (max 15°C on Tue afternoon, min 10°C on Sun night). Wind will be generally light. | |||||||||||||||||||||||||||||||||
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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.
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.
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