Surf Forecasts:
Crab Island surf forecast from 24 Sep 2026:
- Best quality surf: Friday 25 Sep, 10AM (local time) - 3.5ft (1.1m), 16s period, WSW swell with glassy winds.
- Most powerful swell: Thursday 1 Oct, 4AM (local time) - 7ft (2.1m), 12s period, WSW swell with 1,177 kJ wave energy.
- Next surfable swell (1★+): Friday 25 Sep, 7AM (local time) - 2.5ft (0.7m), 16s period with WSW swell.
Best Forecast Surf Conditions for Crab Island this week:
The surf forecast for Crab Island over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Sep 25) at 7AM. The primary swell is predicted to be 0.7m and 16s period with a secondary swell of 0.6m and 10s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Crab Island in the next 16 days are 2.1m 12s and forecast to arrive on Thursday (Oct 01) at 4AM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Fri 25th Sep) | 2.5ft (0.7m) 16s |
| Best Surf | 10AM (Fri 25th Sep) | 3.5ft (1.1m) 16s |
| Most Powerful | 4AM (Thu 1st Oct) | 7ft (2.1m) 12s |
Table - best surf conditions forecast for Crab Island over the next 16 days.
Short Range ForecastMostly dry. Very mild (max 18°C on Thu afternoon, min 12°C on Wed night). Winds increasing (calm on Thu afternoon, fresh winds from the NNW by Fri afternoon). | Days 4-6 Weather SummaryLight rain (total 8mm), mostly falling on Mon night. Very mild (max 19°C on Tue morning, min 13°C on Sat night). Winds increasing (calm on Mon morning, strong winds from the S by Tue afternoon). | ||||||||||||||||||||
Thursday 24 | Friday 25 | Saturday 26 | Sunday 27 | Monday 28 | Tuesday 29 | Wednesday 30 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | WSW 11 | WSW 11 | W 20 | WSW 16 | WSW 15 | W 13 | WSW 12 | WSW 11 | WSW 11 | WSW 7 | WSW 7 | WSW 10 | WSW 10 | WSW 11 | WSW 10 | W 10 | SW 6 | SW 6 | WSW 10 | WSW 10 | WSW 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 23 | 22 | 30 | 628 | 639 | 350 | 240 | 209 | 187 | 58 | 129 | 102 | 184 | 153 | 112 | 48 | 68 | 56 | 1124 | 886 | 643 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | glassy | cross-on | glassy | cross | cross-off | glassy | cross-on | on | on | cross | cross-off | glassy | cross-on | cross | on | on | cross-on | cross-on | cross-on | cross-on |
High Tide | 5:37AM8.24m | 5:55PM8.75m | 6:15AM8.77m | 6:32PM9.20m | 6:50AM9.17m | 7:07PM9.52m | 7:24AM9.45m | 7:41PM9.70m | 7:57AM9.59m | 8:16PM9.74m | 8:31AM9.59m | 8:51PM9.61m | 9:05AM9.41m | 9:27PM9.29m | |||||||
Low Tide | 11:44AM2.24m | 00:02AM1.84m | 12:19PM1.76m | 00:38AM1.43m | 12:53PM1.42m | 1:11AM1.16m | 1:24PM1.19m | 1:44AM1.02m | 1:56PM1.10m | 2:16AM1.04m | 2:29PM1.16m | 2:49AM1.21m | 3:02PM1.38m | 3:22AM1.55m | |||||||
 |  |  |  | |  | | | |  | | | | |  | | | |  | | | |
 | 7:03 | — | — | 7:05 | — | — | 7:07 | — | — | 7:09 | — | — | 7:09 | — | — | 7:11 | — | — | 7:13 | — | — |
 | — | 7:10 | — | — | 7:07 | — | — | 7:06 | — | — | 7:04 | — | — | 7:00 | — | — | 6:59 | — | — | 6:57 | — |
mm | — | — | — | — | — | — | — | — | — | 1 | 1 | — | — | — | 3 | — | 3 | 2 | 3 | 1 | 4 |
Temp °C | 15 | 18 | 16 | 17 | 17 | 12 | 15 | 15 | 15 | 14 | 16 | 15 | 14 | 15 | 17 | 19 | 19 | 17 | 15 | 15 | 16 |
Feels °C | 13 | 18 | 16 | 16 | 15 | 7 | 13 | 12 | 14 | 11 | 14 | 13 | 13 | 13 | 12 | 14 | 12 | 13 | 7 | 7 | 9 |
Swell 1 Height (m) Direction Period (s) | WSW 8 | WSW 7 | WSW 7 | WSW 16 | WSW 15 | W 13 | WSW 12 | WSW 11 | WSW 11 | WSW 7 | WSW 10 | WSW 7 | WSW 10 | WSW 11 | WSW 10 | W 10 | SW 6 | SW 6 | — | — | WSW 13 |
| kJ | 21 | 10 | 15 | 628 | 639 | 350 | 240 | 209 | 187 | 58 | 33 | 91 | 184 | 153 | 112 | 48 | 68 | 56 | — | — | 181 |
Swell 2 Height (m) Direction Period (s) | WSW 11 | WSW 11 | WSW 10 | — | — | — | WSW 12 | — | — | W 10 | — | WSW 10 | — | — | — | — | W 9 | W 12 | — | — | W 13 |
| kJ | 23 | 22 | 9 | — | — | — | 56 | — | — | 50 | — | 102 | — | — | — | — | 16 | 3 | — | — | 219 |
Swell 3 Height (m) Direction Period (s) | — | — | W 20 | — | — | — | — | — | — | W 14 | — | — | — | — | — | — | — | W 12 | — | — | — |
| kJ | — | — | 30 | — | — | — | — | — | — | 4 | — | — | — | — | — | — | — | 3 | — | — | — |
Wind waves Height (m) Direction Period (s) | SE 2 | — | — | — | — | — | — | — | — | — | WSW 7 | — | — | — | — | SSE 3 | S 3 | SSE 4 | WSW 10 | WSW 10 | WSW 10 |
| kJ | 1 | — | — | — | — | — | — | — | — | — | 129 | — | — | — | — | 3 | 1 | 24 | 1124 | 886 | 643 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 45 | 15 | 48 | 0 | 1 | 1 | 0 | 112 | 19 | 19 | 251 | 0 | 0 | 19 | 19 | 560 | 308 | 139 | 416 | 273 | 385 |
Best forecast wave conditions in Wales - Gower | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
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 16 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