Surf Forecasts:
Crab Island surf forecast from 1 Sep 2026:
- Best quality surf: Monday 7 Sep, 10PM (local time) - 3.5ft (1.1m), 11s period, W swell with cross-offshore winds.
- Most powerful swell: Friday 4 Sep, 1AM (local time) - 7ft (2.2m), 7s period, WSW swell with 462 kJ wave energy.
- Next surfable swell (1★+): Saturday 5 Sep, 4AM (local time) - 3.5ft (1.0m), 6s period with W 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 Saturday (Sep 05) at 4AM. The primary swell is predicted to be 1.0m and 6s period with a secondary swell of 0.1m and 14s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Crab Island in the next 16 days are 2.2m 7s and forecast to arrive on Friday (Sep 04) at 1AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Monday (Sep 07) at 4PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Sat 5th Sep) | 3.5ft (1.0m) 6s |
| Best Surf | 10PM (Mon 7th Sep) | 3.5ft (1.1m) 11s |
| Most Powerful | 1AM (Fri 4th Sep) | 7ft (2.2m) 7s |
Table - best surf conditions forecast for Crab Island over the next 16 days.
Short Range ForecastLight rain (total 6mm), mostly falling on Tue afternoon. Very mild (max 19°C on Thu afternoon, min 16°C on Mon night). Mainly fresh winds. | Days 4-6 Weather SummarySome drizzle, heaviest during Thu night. Warm (max 20°C on Sun afternoon, min 13°C on Fri night). Winds decreasing (strong winds from the WSW on Thu night, calm by Sat night). | ||||||||||||||||||||
Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | |||||||||||||||
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) | W 9 | WSW 5 | WSW 5 | WSW 6 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 8 | WSW 8 | W 6 | WSW 6 | WSW 9 | W 9 | WSW 9 | WSW 6 | WSW 8 | WSW 12 | WSW 11 | WSW 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 39 | 42 | 42 | 55 | 306 | 242 | 208 | 249 | 462 | 259 | 232 | 86 | 55 | 61 | 41 | 26 | 11 | 26 | 82 | 194 | 265 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | on | cross-on | cross-on | cross | cross-on | cross-on | cross-off | cross | cross-off | cross-off | cross | cross-off | cross-on | cross-on | cross-on | cross-on | cross | cross-off |
High Tide | 9:28AM9.22m | 9:48PM9.24m | 10:01AM8.93m | 10:23PM8.83m | 10:38AM8.51m | 11:04PM8.29m | 11:24AM7.96m | 00:02AM7.65m | 12:36PM7.40m | 1:34AM7.19m | 2:22PM7.24m | 3:19AM7.32m | 3:58PM7.71m | ||||||||
Low Tide | 3:24PM1.39m | 3:45AM1.48m | 3:57PM1.70m | 4:20AM1.90m | 4:35PM2.16m | 5:02AM2.45m | 5:26PM2.76m | 6:02AM3.09m | 6:51PM3.32m | 7:47AM3.49m | 8:54PM3.32m | 9:37AM3.19m | 10:26PM2.71m | ||||||||
 |  |  | | |  |  | | |  | |  | | | | | | | | | | |
 | 6:26 | — | — | 6:28 | — | — | 6:30 | — | — | 6:31 | — | — | 6:33 | — | — | 6:35 | — | — | 6:37 | — | — |
 | — | 8:02 | — | — | 8:00 | — | — | 7:59 | — | — | 7:57 | — | — | 7:53 | — | — | 7:52 | — | — | 7:50 | — |
mm | — | 2 | 2 | 1 | 1 | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 17 | 17 | 17 | 17 | 18 | 18 | 18 | 19 | 19 | 16 | 17 | 16 | 15 | 16 | 14 | 18 | 20 | 18 | 20 | 20 | 17 |
Feels °C | 14 | 13 | 14 | 13 | 14 | 15 | 16 | 16 | 14 | 13 | 11 | 12 | 12 | 13 | 13 | 14 | 16 | 15 | 18 | 18 | 17 |
Swell 1 Height (m) Direction Period (s) | W 9 | W 18 | W 8 | SW 16 | — | W 8 | SW 15 | SW 16 | — | SW 15 | SW 14 | W 6 | WSW 6 | WSW 9 | W 9 | WSW 9 | WSW 6 | WSW 8 | WSW 12 | WSW 11 | WSW 10 |
| kJ | 39 | 6 | 12 | 10 | — | 163 | 8 | 9 | — | 8 | 8 | 86 | 55 | 61 | 41 | 26 | 11 | 26 | 82 | 194 | 265 |
Swell 2 Height (m) Direction Period (s) | — | — | SW 16 | — | — | W 15 | — | — | — | — | — | WSW 9 | SW 14 | SW 13 | SW 13 | SW 13 | W 8 | W 12 | W 9 | — | — |
| kJ | — | — | 10 | — | — | 4 | — | — | — | — | — | 25 | 8 | 7 | 7 | 7 | 6 | 3 | 40 | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | W 16 | — | — | — | — | — | — | — | — | SW 14 | SW 14 | — | — | — | SW 13 | — | — | — | — |
| kJ | — | — | 5 | — | — | — | — | — | — | — | — | 8 | 8 | — | — | — | 7 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WSW 6 | WSW 5 | WSW 5 | WSW 6 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 8 | WSW 8 | — | — | — | — | — | SE 3 | SSE 3 | — | WNW 3 | — |
| kJ | 36 | 42 | 42 | 55 | 306 | 242 | 208 | 249 | 462 | 259 | 232 | — | — | — | — | — | 2 | 1 | — | 9 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 122 | 148 | 122 | 423 | 320 | 320 | 133 | 320 | 144 | 361 | 360 | 136 | 0 | 133 | 15 | 72 | 51 | 20 | 49 | 49 | 0 |
Best forecast wave conditions in Wales - Gower | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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.
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.
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