Surf Forecasts:
Crab Island surf forecast from 12 Jul 2026:
- Most powerful swell: Wednesday 15 Jul, 1PM (local time) - 2.5ft (0.8m), 4s period, E swell with 20 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 0.8m 4s and forecast to arrive on Wednesday (Jul 15) at 1PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 4s period and expected on Monday (Jul 13) at 1AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 1PM (Wed 15th Jul) | 2.5ft (0.8m) 4s |
Table - best surf conditions forecast for Crab Island over the next 16 days.
Alright mate, Rusty here. Let's have a look at what's on the cards for the next couple of weeks.
Honestly, it's a pretty bleak stretch ahead. For the next 15 days, there's just nothing doing. We're looking at a long, dry spell of poor surf conditions right through until the 26th of July. The energy is flat, with combined swell readings barely registering above 38 (weak energy), and the swell heights are tiny – mostly 0.3ft to 1ft. It's a whole lot of nothing for a paddle surfer.
The only glimmer on the horizon is the very last entry, on Monday the 27th of July. The morning shows a bit of a pulse finally arriving at Crab Island, a reef break. The swell bumps up to 4.3ft from the WSW, with a period of 8 seconds. The combined energy jumps to 430 (moderate wave energy). The wind is a gentle cross-shore, so it could be clean. It's a marginal call, but that's the only window worth keeping an eye on. A week and a half of flatness, then a possible little spike. Don't get your hopes up too high, but it's something to check as we get closer.
Short Range ForecastMostly dry. Warm (max 33°C on Tue afternoon, min 15°C on Sun night). Winds decreasing (strong winds from the ENE on Sun night, light winds from the ENE by Tue afternoon). | Days 4-6 Weather SummarySome drizzle, heaviest during Wed morning. Warm (max 31°C on Wed afternoon, min 18°C on Wed night). Winds decreasing (fresh winds from the ENE on Tue night, calm by Wed night). | ||||||||||||||||||||
Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | |||||||||||||||
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 | E 3 | W 8 | E 4 | E 4 | E 4 | W 11 | WSW 11 | E 4 | E 4 | ESE 4 | WSW 9 | SW 7 | SW 7 | W 8 | W 8 | W 8 | W 8 | SW 6 | WSW 6 | WSW 5 |
Wave Graph  | |||||||||||||||||||||
 kJ | 5 | 8 | 1 | 19 | 15 | 12 | 12 | 12 | 13 | 19 | 10 | 8 | 9 | 8 | 8 | 5 | 7 | 5 | 6 | 12 | 10 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross-off | cross-off | cross | cross | cross | cross-off | cross-off | cross-on | cross-on | cross-on | cross | cross | cross-off | cross | cross | cross-off | on | cross | cross |
High Tide | 4:45AM8.22m | 5:17PM8.49m | 5:52AM8.65m | 6:19PM8.99m | 6:52AM9.05m | 7:15PM9.41m | 7:47AM9.35m | 8:07PM9.66m | 8:37AM9.47m | 8:55PM9.74m | 9:23AM9.43m | 9:40PM9.63m | 10:05AM9.21m | 10:22PM9.35m | |||||||
Low Tide | 10:54AM2.17m | 11:29PM1.95m | 11:58AM1.75m | 00:32AM1.52m | 12:56PM1.39m | 1:30AM1.17m | 1:50PM1.13m | 2:24AM0.97m | 2:39PM1.03m | 3:12AM0.94m | 3:24PM1.08m | 3:55AM1.08m | 4:05PM1.29m | ||||||||
 | |  | | |  | |  | |  | | | |  | | | | | | | | |
 | 5:11 | — | — | 5:13 | — | — | 5:13 | — | — | 5:15 | — | — | 5:16 | — | — | 5:16 | — | — | 5:18 | — | — |
 | — | — | 9:30 | — | — | 9:29 | — | — | 9:28 | — | — | 9:27 | — | — | 9:25 | — | — | 9:24 | — | — | 9:23 |
mm | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 30 | 24 | 24 | 28 | 23 | 27 | 33 | 29 | 29 | 31 | 20 | 22 | 22 | 20 | 20 | 21 | 21 | 24 | 26 | 26 |
Feels °C | 23 | 26 | 17 | 19 | 25 | 17 | 25 | 30 | 25 | 25 | 28 | 20 | 20 | 20 | 19 | 19 | 18 | 20 | 24 | 23 | 26 |
Swell 1 Height (m) Direction Period (s) | W 8 | W 8 | W 8 | W 19 | SW 19 | W 12 | W 11 | WSW 11 | WSW 10 | WSW 10 | WSW 9 | WSW 9 | SW 7 | SW 7 | SSW 6 | W 8 | W 8 | WSW 4 | SW 6 | W 8 | WSW 5 |
| kJ | 5 | 1 | 1 | 7 | 15 | 3 | 10 | 12 | 10 | 9 | 8 | 8 | 9 | 7 | 4 | 5 | 5 | 2 | 6 | 5 | 10 |
Swell 2 Height (m) Direction Period (s) | W 16 | — | — | — | SW 15 | W 15 | SW 18 | SW 18 | SW 14 | SW 16 | SW 16 | WSW 3 | W 8 | WSW 8 | W 8 | — | SW 13 | W 8 | W 8 | — | W 8 |
| kJ | 5 | — | — | — | 8 | 4 | 12 | 12 | 7 | 10 | 10 | 1 | 5 | 7 | 6 | — | 7 | 5 | 1 | — | 5 |
Swell 3 Height (m) Direction Period (s) | — | — | — | W 8 | W 8 | W 8 | — | W 14 | — | — | S 7 | SW 8 | SW 14 | SW 14 | SW 15 | — | — | SW 6 | — | — | — |
| kJ | — | — | — | 1 | 1 | 1 | — | 4 | — | — | 1 | 2 | 8 | 8 | 8 | — | — | 1 | — | — | — |
Wind waves Height (m) Direction Period (s) | E 3 | E 3 | E 4 | E 4 | E 4 | E 4 | E 3 | E 3 | E 4 | E 4 | ESE 4 | — | — | WSW 2 | W 3 | WSW 6 | WSW 3 | — | W 4 | WSW 6 | — |
| kJ | 4 | 8 | 35 | 19 | 10 | 12 | 5 | 8 | 13 | 19 | 7 | — | — | 1 | 1 | 4 | 4 | — | 1 | 12 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 402 | 222 | 369 | 141 | 136 | 135 | 73 | 84 | 135 | 73 | 176 | 201 | 206 | 414 | 319 | 491 | 368 | 202 | 438 | 729 | 402 |
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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