Surf Forecasts:
Crab Island surf forecast from 21 Jul 2026:
- Best quality surf: Sunday 26 Jul, 10PM (local time) - 3ft (0.9m), 6s period, W swell with cross-offshore winds.
- Most powerful swell: Sunday 26 Jul, 4AM (local time) - 3.5ft (1.0m), 6s period, W swell with 81 kJ wave energy.
- Next surfable swell (1★+): Sunday 26 Jul, 10PM (local time) - 3ft (0.9m), 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 Sunday (Jul 26) at 10PM. The primary swell is predicted to be 0.9m and 6s period. 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 1.0m 6s and forecast to arrive on Sunday (Jul 26) at 4AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Friday (Jul 24) at 7PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Sun 26th Jul) | 3ft (0.9m) 6s |
| Best Surf | 10PM (Sun 26th Jul) | 3ft (0.9m) 6s |
| Most Powerful | 4AM (Sun 26th Jul) | 3.5ft (1.0m) 6s |
Table - best surf conditions forecast for Crab Island over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let me tell you, it’s a tough time to be a surfer around here. We’re looking at a long, dry spell with barely a ripple to get excited about. The forecast is pretty grim for the next couple of weeks, so don’t go getting your hopes up just yet.
The first possible recommendation doesn’t pop up until the morning of the 5th of August. That’s a solid gap of over a week with nothing worth paddling out for. Up until then, it’s a whole lot of flatness and onshore junk.
For the morning of the 5th, we’ve got a bit of a pulse showing up. Even then, the conditions are still a mess. The waves are a weak 4 ft from the WSW, but the wind is coming from the ESE at 6 mph, putting a cross-shore bump on the surface. The combined energy is a paltry 128 (weak), so there’s no real power behind it. The period is a short 7 seconds, so it’s just wind swell, not the kind of stuff that makes you want to skip work. The water is about 69°, which is much warmer than normal for this time of year, but that’s a small comfort when the surf is so poor.
The afternoon of the 5th isn’t any better. The swell nudges up to 4 ft from the WSW, with a combined energy of 155 (still weak), but the wind shifts to SSW at 9 mph, becoming cross-onshore and choppy. It’s a mess.
So, to be brutally honest, there is no standout day here. Nothing is even close to being good. The only break on the books is Crab Island (a reef break), but it’s not picking up any decent swell, and the wind is never in its favor. If you’re desperate, the morning of the 5th is the only time with any real wave height, but the quality is so poor it’s more of a frustrating paddle than a surf. This is just one of those stretches where the ocean is on holiday. Don’t force it; the forecasts can change, but right now, it’s a blank run.
Rusty.
Short Range ForecastMostly dry. Warm (max 23°C on Thu afternoon, min 13°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 22°C on Fri afternoon, min 13°C on Sun night). Winds increasing (calm on Fri morning, fresh winds from the W by Sat morning). | ||||||||||||||||||||
Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | |||||||||||||||
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 11 | W 10 | W 10 | W 10 | W 9 | W 9 | W 15 | W 8 | W 8 | W 13 | W 3 | WNW 3 | W 4 | W 4 | WSW 6 | WSW 6 | W 6 | WSW 7 | W 6 | W 6 | W 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 2 | 2 | 2 | 8 | 7 | 2 | 4 | 1 | 1 | 3 | 2 | 2 | 3 | 20 | 64 | 66 | 64 | 58 | 38 | 24 | 11 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross | off | glassy | cross-on | off | glassy | cross | off | glassy | cross | off | cross-off | cross | cross | cross-off | cross-off | cross-off | cross | cross | cross |
High Tide | 12:03PM7.96m | 00:23AM7.94m | 12:51PM7.52m | 1:15AM7.47m | 1:53PM7.20m | 2:22AM7.17m | 3:07PM7.14m | 3:36AM7.15m | 4:18PM7.38m | 4:45AM7.40m | 5:18PM7.78m | 5:41AM7.77m | 6:06PM8.20m | ||||||||
Low Tide | 6:03PM2.48m | 6:32AM2.72m | 6:55PM2.92m | 7:29AM3.13m | 8:02PM3.24m | 8:40AM3.34m | 9:16PM3.29m | 9:53AM3.26m | 10:24PM3.08m | 10:57AM2.97m | 11:22PM2.74m | 11:49AM2.60m | 00:10AM2.37m | ||||||||
 | |  |  | | | | | | | |  | | |  |  | | | | | | |
 | 5:22 | — | — | 5:24 | — | — | 5:24 | — | — | 5:26 | — | — | 5:28 | — | — | 5:28 | — | — | 5:31 | — | — |
 | — | — | 9:21 | — | — | 9:19 | — | — | 9:17 | — | — | 9:16 | — | — | 9:15 | — | — | 9:14 | — | — | 9:12 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 22 | 18 | 19 | 22 | 21 | 21 | 23 | 20 | 21 | 22 | 19 | 18 | 18 | 18 | 17 | 20 | 18 | 18 | 18 | 17 |
Feels °C | 19 | 20 | 15 | 19 | 20 | 18 | 19 | 20 | 17 | 19 | 18 | 16 | 14 | 15 | 17 | 14 | 16 | 16 | 14 | 14 | 16 |
Swell 1 Height (m) Direction Period (s) | W 11 | W 10 | WNW 4 | W 10 | W 9 | NW 4 | W 9 | W 8 | W 8 | W 8 | — | WNW 3 | W 8 | — | WSW 6 | WSW 6 | W 6 | WSW 7 | W 6 | W 6 | W 6 |
| kJ | 2 | 2 | 1 | 8 | 7 | 4 | 2 | 1 | 1 | 1 | — | 2 | 1 | — | 64 | 66 | 64 | 58 | 38 | 24 | 11 |
Swell 2 Height (m) Direction Period (s) | W 7 | W 7 | W 10 | — | — | W 9 | W 15 | — | — | W 13 | — | W 8 | — | — | — | — | — | — | WSW 7 | — | W 8 |
| kJ | 1 | 1 | 2 | — | — | 2 | 4 | — | — | 3 | — | 1 | — | — | — | — | — | — | 16 | — | 1 |
Swell 3 Height (m) Direction Period (s) | — | — | W 7 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | NNW 4 | NNW 4 | — | — | — | — | — | — | W 3 | — | W 4 | W 4 | — | — | — | NNW 3 | NW 3 | NW 3 | N 3 |
| kJ | — | — | 2 | 1 | — | — | — | — | — | — | 2 | — | 3 | 20 | — | — | — | 1 | 2 | 4 | 1 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 414 | 809 | 196 | 395 | 842 | 94 | 135 | 202 | 367 | 1006 | 789 | 700 | 414 | 414 | 760 | 361 | 361 | 13 | 190 | 360 | 183 |
Best forecast wave conditions in Wales - Gower | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
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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 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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