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Crab Island Surf Forecast
/ Wales – Gower (29 surf breaks) /
Surf Forecasts:
Crab Island surfForecast / Wales – Gower / UK
12 Day Weather and Surf, issued 11 pm Sunday 04 Jan 2026 GMTForecast 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
8.1° C
(Which is 1.9°C colder than average for this time of year)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 Thursday (Jan 08) at 9AM. The primary swell is predicted to be 1.3m and 7s period. 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 6.5m 15s and forecast to arrive on Friday (Jan 09) at 3AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.9m 6s period and expected on Saturday (Jan 10) at 3AM.
| Wave Type | Time (GMT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9AM (Thu 8th Jan) | 4.5ft (1.3m) 7s |
| Best Surf | 3AM (Fri 9th Jan) | 21ft (6.5m) 15s |
| Most Powerful | 3AM (Fri 9th Jan) | 21ft (6.5m) 15s |
Table - best surf conditions forecast for Crab Island over the next 12 days.
Updates in hr min s Forecast update imminent
Short Range Forecast Moderate rain (total 10mm), heaviest on Tue night. Mild temperatures (max 8°C on Tue afternoon, min 1°C on Mon morning). Winds increasing (light winds from the N on Mon night, strong winds from the SW by Tue afternoon). | Days 3-6 Weather Summary Heavy rain (total 27mm), heaviest during Thu afternoon. Very mild (max 10°C on Thu afternoon, min 4°C on Thu night). Winds decreasing (severe gales from the SW on Thu night, calm by Sat afternoon). | |||||||||||||||||||||
Monday 05 | Tuesday 06 | Wednesday 07 | Thursday 08 | Friday 09 | Saturday 10 | Sun 11 | ||||||||||||||||
| Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | ||
Rating (10 max) | ||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  | ||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||
| Period(s) (?) | 12 | 12 | 11 | 5 | 11 | 5 | 7 | 7 | 7 | 5 | 7 | 8 | 10 | 14 | 13 | 14 | 12 | 12 | 11 | 10 | 6 | |
Wave (?)Graph  | ||||||||||||||||||||||
 kJ (?) | 12 | 11 | 10 | 4 | 9 | 72 | 293 | 111 | 56 | 83 | 181 | 146 | 1944 | 9311 | 4681 | 1605 | 329 | 179 | 150 | 100 | 54 | |
Wind (km/h) | ||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | off | off | cross- off | cross- off | cross | cross- off | cross- off | cross | cross- off | cross- off | cross- on | cross- on | cross- off | cross- off | cross- off | cross- off | glass | cross- on | on | cross- on | |
High Tide / height (m) | 7:30AM 9.77 | 7:58PM 9.50 | 8:15AM 9.71 | 8:41PM 9.33 | 8:57AM 9.48 | 9:21PM 9.01 | 9:37AM 9.12 | 9:59PM 8.61 | 10:15AM 8.67 | 10:38PM 8.16 | 10:55AM 8.19 | 11:21PM 7.72 | 11:42AM 7.72 | |||||||||
Low Tide / height (m) | 1:14AM 1.22 | 1:45PM 1.12 | 1:59AM 1.24 | 2:30PM 1.21 | 2:40AM 1.40 | 3:10PM 1.45 | 3:18AM 1.68 | 3:47PM 1.80 | 3:55AM 2.05 | 4:24PM 2.22 | 4:35AM 2.46 | 5:04PM 2.66 | 5:21AM 2.89 | 5:54PM 3.08 | ||||||||
Monday 05 | Tuesday 06 | Wednesday 07 | Thursday 08 | Friday 09 | Saturday 10 | Sun 11 | ||||||||||||||||
| Sunrise | - | 8:21 | - | - | 8:19 | - | - | 8:19 | - | - | 8:19 | - | - | 8:18 | - | - | 8:18 | - | - | 8:18 | - | |
| Sunset | - | - | 4:21 | - | - | 4:22 | - | - | 4:22 | - | - | 4:24 | - | - | 4:25 | - | - | 4:27 | - | - | 4:29 | |
 |  | | |  |  |  |  | |  | |  |  | | |  | | |  |  | | ||
Rain (mm) | - | - | - | - | - | 1 | 7 | - | 2 | 2 | - | 12 | 9 | 4 | - | - | - | - | 18 | 7 | 2 | |
| Temp. °C | 3 | 3 | 3 | 4 | 6 | 8 | 7 | 6 | 6 | 7 | 7 | 10 | 8 | 5 | 6 | 6 | 5 | 5 | 11 | 12 | 9 | |
| Feels °C (?) | -2 | -2 | -3 | -1 | 0 | 0 | -2 | 1 | 1 | 1 | 4 | 2 | -8 | -9 | -6 | -4 | 1 | 2 | 2 | 4 | 0 | |
- 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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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.
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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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