Surf Forecasts:
Crab Island surf forecast from 16 Jul 2026:
- Most powerful swell: Thursday 16 Jul, 1PM (local time) - 0.5ft (0.2m), 8s period, WSW swell with 8 kJ wave energy.
Best Forecast Surf Conditions for Crab Island this week:
The most powerful waves expected at Crab Island in the next 16 days are 0.1m 14s and forecast to arrive on Thursday (Jul 16) at 1PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Saturday (Jul 18) at 7PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 1PM (Thu 16th Jul) | 0.5ft (0.2m) 8s |
Table - best surf conditions forecast for Crab Island over the next 16 days.
The Lowdown
Alright, grab a seat. This is Rusty.
Alright, look, I’m gonna level with you. This forecast for the next 16 days at our local spot is a tough one to write. We’ve got a very long, flat spell to start. From now, Thursday the 16th of July, all the way through to the morning of Thursday the 30th of July, the swell is barely a whisper. There’s no surf to speak of – just tiny, weak dribbles and a whole lot of nothing. The energy readings are in the single digits for most of that time. The only option during that whole stretch is to skip the paddle and maybe go for a swim.
Finally, on Friday the 31st of July, we get a pulse. It’s not going to save the week, but it’s the only show in town. Crab Island will see a moderate 3 ft swell from the WSW, with a period of 8 seconds. The combined energy is up there around 112, which is a moderate kick. The important thing here is that Friday morning, the wind is light offshore from the N, which will make the surface clean. The water temperature is running a very unusual nine degrees warmer than normal for this time of year, coming in at 69°, so it’s like a bath out there.
That Friday morning window is the absolute standout, and honestly, it’s the only thing on the cards. Don’t hold your breath for the rest of the period. We’ll have to wait and see if the forecasts change, because it’s a pretty blank run otherwise.
Rusty.
Short Range ForecastMostly dry. Warm (max 26°C on Thu afternoon, min 13°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 23°C on Tue afternoon, min 15°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | |||||||||||||||
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 8 | WSW 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | NW 4 | W 7 | W 7 | W 10 | W 12 | W 11 | W 11 | E 3 | W 10 | W 10 | W 10 | W 10 | W 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 8 | 7 | 6 | 5 | 7 | 7 | 5 | 1 | 2 | 1 | 1 | 2 | 3 | 2 | 2 | 2 | 2 | 2 | 7 | 7 | 6 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross-off | glassy | cross | off | glassy | cross-off | cross-off | cross-off | cross | off | glassy | cross-on | cross-off | glassy | cross | cross-off | glassy | cross-off | cross-off |
High Tide | 8:55PM9.74m | 9:23AM9.43m | 9:40PM9.63m | 10:05AM9.21m | 10:22PM9.35m | 10:45AM8.86m | 11:01PM8.94m | 11:23AM8.43m | 11:40PM8.45m | 12:03PM7.96m | 00:23AM7.94m | 12:51PM7.52m | 1:15AM7.47m | ||||||||
Low Tide | 2:39PM1.03m | 3:12AM0.94m | 3:24PM1.08m | 3:55AM1.08m | 4:05PM1.29m | 4:34AM1.38m | 4:43PM1.62m | 5:11AM1.78m | 5:21PM2.03m | 5:48AM2.25m | 6:03PM2.48m | 6:32AM2.72m | 6:55PM2.92m | ||||||||
 | |  | | | | | | | | |  | | | | | | |  | | | |
 | 5:16 | — | — | 5:16 | — | — | 5:18 | — | — | 5:20 | — | — | 5:20 | — | — | 5:22 | — | — | 5:24 | — | — |
 | — | — | 9:25 | — | — | 9:24 | — | — | 9:23 | — | — | 9:22 | — | — | 9:22 | — | — | 9:21 | — | — | 9:19 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 23 | 26 | 25 | 23 | 25 | 21 | 20 | 23 | 20 | 19 | 22 | 20 | 19 | 22 | 22 | 20 | 23 | 22 | 22 | 22 | 18 |
Feels °C | 22 | 24 | 21 | 21 | 21 | 17 | 18 | 20 | 16 | 16 | 19 | 15 | 17 | 20 | 19 | 18 | 20 | 20 | 18 | 16 | 14 |
Swell 1 Height (m) Direction Period (s) | W 8 | WSW 8 | NW 4 | W 8 | W 8 | W 8 | W 8 | W 8 | NW 4 | W 7 | W 7 | NW 3 | W 9 | W 8 | NW 3 | W 10 | W 10 | NW 3 | W 10 | W 10 | W 9 |
| kJ | 5 | 7 | 2 | 5 | 5 | 5 | 5 | 1 | 2 | 1 | 1 | 2 | 2 | 1 | 2 | 2 | 2 | 3 | 7 | 7 | 6 |
Swell 2 Height (m) Direction Period (s) | W 10 | SW 7 | W 8 | SW 6 | SW 6 | SW 6 | — | — | — | NW 4 | — | W 7 | — | W 11 | W 8 | W 7 | — | W 10 | — | — | — |
| kJ | 2 | 2 | 6 | 2 | 1 | 1 | — | — | — | 1 | — | 1 | — | 2 | 1 | 1 | — | 2 | — | — | — |
Swell 3 Height (m) Direction Period (s) | SW 14 | — | SW 7 | — | SW 13 | SW 13 | SW 6 | — | W 8 | — | — | W 10 | W 12 | — | W 11 | — | W 7 | W 7 | — | — | — |
| kJ | 8 | — | 2 | — | 7 | 7 | 1 | — | 1 | — | — | 2 | 3 | — | 2 | — | 1 | 1 | — | — | — |
Wind waves Height (m) Direction Period (s) | — | ENE 2 | — | — | — | NW 3 | — | NW 2 | ENE 3 | E 2 | — | — | — | — | — | E 3 | ENE 2 | — | — | NW 3 | NW 3 |
| kJ | — | 1 | — | — | — | 2 | — | 2 | 8 | 1 | — | — | — | — | — | 2 | 1 | — | — | 2 | 3 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 222 | 222 | 319 | 319 | 395 | 420 | 420 | 402 | 369 | 190 | 319 | 374 | 414 | 86 | 135 | 190 | 402 | 438 | 903 | 196 | |
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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