Surf Forecasts:
Crab Island surf forecast from 3 Jul 2026:
- Best quality surf: Friday 3 Jul, 4AM (local time) - 3ft (0.9m), 10s period, WSW swell with glassy winds.
- Most powerful swell: Saturday 4 Jul, 4PM (local time) - 3.5ft (1.1m), 10s period, W swell with 240 kJ wave energy.
- Next surfable swell (1★+): Friday 3 Jul, 4AM (local time) - 3ft (0.9m), 10s 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 (Jul 03) at 4AM. The primary swell is predicted to be 0.9m and 10s period. 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 1.1m 10s and forecast to arrive on Saturday (Jul 04) at 4PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 5s period and expected on Tuesday (Jul 07) at 1PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Fri 3rd Jul) | 3ft (0.9m) 10s |
| Best Surf | 4AM (Fri 3rd Jul) | 3ft (0.9m) 10s |
| Most Powerful | 4PM (Sat 4th Jul) | 3.5ft (1.1m) 10s |
Table - best surf conditions forecast for Crab Island over the next 16 days.
Updates in hr min s Forecast update imminent
Right then folks, Rusty here, and I've gotta be straight with ya – we're lookin' down a pretty bleak stretch for the next sixteen days. There are no good standouts in the window, not for paddlin' into. Let's break it down.
We kick off Thursday afternoon (2nd July) at Crab Island. It's a reef break, fairly consistent, exposed to the SW. The water temp is clockin' in at 66°, and that's a massive 8° warmer than usual for the time of year – seriously unusual, almost like the tropics came to visit. Swell's 4ft from the WSW, period's a short 8 seconds. The wind is a light cross-offshore though, so the surf will be clean, but the overall vibe is marginal. It's an okay opening act, that's about it.
From there, it's a long, long dry spell. Friday the 3rd through to Sunday the 12th of July is just a write-off. The swell drops right out, wind is messy, or onshore. We're talkin' knee-high slop or smaller, with cross-shore chop. There's simply nothing worth paddling out for. The 13th of July (Monday afternoon) is briefly tantalising – glassy conditions, 1ft of WSW swell, but it's a long 13-second period and the energy is weak (81). It's surfable but very ordinary.
The rest of the second week into the 17th of July is the same story: tiny swell, poor conditions. The 17th afternoon sees a bump up to 4ft from the WSW, but it's short-period 6 seconds, onshore, and the report says "poor." It might look more interesting for kite surfing than paddle surfing.
Honestly, this is a blank run that's normal for the area when the swell and wind just don't line up. Don't force it, grab a coffee, and wait for the next system.
Rusty.
Short Range ForecastMostly dry. Warm (max 21°C on Sun morning, min 14°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 24°C on Tue afternoon, min 16°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Thu 2 | Friday 3 | Saturday 4 | Sunday 5 | Monday 6 | Tuesday 7 | Wednesday 8 | |||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | WSW 8 | WSW 10 | WSW 10 | WSW 10 | W 10 | W 10 | W 10 | W 10 | W 6 | WSW 9 | WSW 9 | W 9 | W 5 | WSW 9 | W 9 | WSW 8 | W 8 | WSW 8 | W 9 | W 9 | W 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 207 | 163 | 133 | 133 | 100 | 73 | 240 | 48 | 32 | 26 | 26 | 13 | 16 | 26 | 39 | 14 | 11 | 14 | 14 | 14 | 16 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | cross-on | cross | cross-on | cross | cross | cross-off | cross-off | cross | cross | cross | cross | cross | cross | cross | off | cross-on | cross | cross-off | cross |
High Tide | 8:50PM8.83m | 9:07AM8.55m | 9:25PM8.80m | 9:42AM8.49m | 10:01PM8.70m | 10:18AM8.37m | 10:39PM8.55m | 10:56AM8.20m | 11:19PM8.35m | 11:39AM7.99m | 00:06AM8.12m | 12:30PM7.78m | 1:04AM7.90m | ||||||||
Low Tide | 2:53AM1.80m | 3:04PM1.91m | 3:29AM1.82m | 3:38PM1.97m | 4:05AM1.89m | 4:14PM2.09m | 4:42AM2.03m | 4:52PM2.26m | 5:24AM2.22m | 5:38PM2.47m | 6:13AM2.43m | 6:34PM2.68m | 7:14AM2.62m | ||||||||
 |  | | | | | | |  | | | | |  | | | | | |  | | |
 | — | — | 5:03 | — | — | 5:03 | — | — | 5:05 | — | — | 5:05 | — | — | 5:07 | — | — | 5:07 | — | — | 5:09 |
 | — | 9:36 | — | — | 9:36 | — | — | 9:35 | — | — | 9:35 | — | — | 9:34 | — | — | 9:34 | — | — | 9:32 | 9:31 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — |
Temp °C | 18 | 15 | 16 | 16 | 15 | 19 | 19 | 19 | 21 | 20 | 17 | 19 | 20 | 18 | 22 | 24 | 22 | 23 | 26 | 25 | 24 |
Feels °C | 15 | 13 | 13 | 13 | 14 | 16 | 16 | 18 | 18 | 16 | 16 | 16 | 17 | 17 | 19 | 23 | 20 | 24 | 25 | 23 | 22 |
Swell 1 Height (m) Direction Period (s) | WSW 8 | WSW 10 | WSW 10 | WSW 10 | W 10 | W 10 | — | W 6 | W 6 | WSW 9 | WSW 9 | W 9 | W 8 | WSW 9 | W 9 | WSW 8 | W 8 | WSW 8 | W 9 | W 9 | W 9 |
| kJ | 207 | 163 | 133 | 133 | 100 | 73 | — | 39 | 32 | 26 | 26 | 13 | 12 | 26 | 39 | 14 | 11 | 14 | 14 | 14 | 16 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | W 10 | WSW 9 | — | WSW 4 | — | — | W 4 | — | — | W 4 | — | — | — | — |
| kJ | — | — | — | — | — | — | — | 48 | 28 | — | 6 | — | — | 6 | — | — | 1 | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 11 | W 10 | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 8 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | WSW 3 | WSW 5 | W 6 | W 10 | — | — | W 5 | — | W 5 | W 5 | — | — | W 4 | — | — | — | — | — |
| kJ | — | — | — | 3 | 20 | 56 | 240 | — | — | 20 | — | 13 | 16 | — | — | 3 | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1 | 0 | 49 | 348 | 125 | 133 | 360 | 0 | 133 | 133 | 94 | 145 | 190 | 121 | 190 | 190 | 86 | 51 | 153 | 51 | 72 |
Best forecast wave conditions in Wales - Gower | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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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