Surf Forecasts:
Crab Island surf forecast from 24 Jul 2026:
- Best quality surf: Sunday 26 Jul, 10PM (local time) - 4.5ft (1.3m), 7s period, W swell with offshore winds.
- Most powerful swell: Sunday 26 Jul, 4PM (local time) - 4.5ft (1.3m), 7s period, W swell with 161 kJ wave energy.
- Next surfable swell (1★+): Sunday 26 Jul, 10PM (local time) - 4.5ft (1.3m), 7s 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 1.3m and 7s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Crab Island in the next 16 days are 1.3m 7s and forecast to arrive on Sunday (Jul 26) at 4PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 3s period and expected on Saturday (Jul 25) at 1AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Sun 26th Jul) | 4.5ft (1.3m) 7s |
| Best Surf | 10PM (Sun 26th Jul) | 4.5ft (1.3m) 7s |
| Most Powerful | 4PM (Sun 26th Jul) | 4.5ft (1.3m) 7s |
Table - best surf conditions forecast for Crab Island over the next 16 days.
The Lowdown
Alright, buckle up for Crab Island. It’s gonna be a lean couple of weeks.
The water is running way warmer than normal – about 69°, which is a big anomaly for this time of year – so don’t expect that typical cool-season feel.
We start off on Friday the 24th with absolutely nothing – 0.3ft of west windswell with a 1-second period. Energy is basically zero (1). A moderate cross-breeze makes it a hard pass.
Saturday the 25th is clean in the morning but tiny – 0.7ft, 4-second period. Afternoon gets lumpy with a fresh cross-breeze and 3ft of weak chop. Still no.
Sunday the 26th is the best of the first week. Morning brings 4ft from the west at 7 seconds, energy up to 130 – moderate. Cross-off breeze, clean. Afternoon holds 4ft, same direction, energy at 161, still clean. For a reef exposed to the southwest, a west swell isn’t ideal, but it’s the only real window in the first week.
From Monday the 27th, it drops back to under 2ft of weak, bumpy slop. Days of tiny, cross-shore chop.
No real quality until Tuesday the 4th of August. The morning is still messy, but Tuesday afternoon? That’s the one. Glassy winds, 5ft from the WSW at 7 seconds, energy at 204. The only “good surf conditions” in the whole run. For intermediates, 5ft is a fun size but getting big for beginners. Short period means it’ll be a bit soft, but glassy makes it clean.
After that, it’s a quick fade. Wednesday the 5th brings onshore winds, and by Thursday the 6th, it’s blown out. Friday the 7th has clean cross-off winds but only 2ft of weak swell. The weekend of the 8th shows a bump in period to 10 seconds and energy up to 126, but the cross-winds will mess it up.
So, the bottom line: the second week is quiet and inconsistent. Your one true standout is Tuesday afternoon, August 4th – glassy, clean, 5ft from the southwest. That’s the session to aim for.
– Rusty
Short Range ForecastMostly dry. Warm (max 22°C on Fri afternoon, min 14°C on Sun night). Mainly fresh winds. | Days 5-7 Weather SummarySome drizzle, heaviest during Tue afternoon. Warm (max 23°C on Tue afternoon, min 16°C on Wed night). Wind will be generally light. | |||||||||||||||||||
Fri 24 | Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | ||||||||||||||
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 | WNW 3 | W 8 | W 4 | WSW 6 | W 7 | W 7 | W 6 | W 6 | WSW 6 | W 6 | W 6 | WSW 5 | W 5 | W 11 | W 5 | W 10 | W 7 | WSW 7 | W 4 |
Wave Graph  | ||||||||||||||||||||
 kJ | 1 | 2 | 2 | 22 | 82 | 130 | 161 | 104 | 51 | 50 | 17 | 16 | 9 | 2 | 2 | 2 | 8 | 10 | 17 | 7 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross-off | cross | cross | cross-off | cross-off | cross-off | cross | cross | cross | on | cross | cross-off | cross | cross | cross-off | cross-on | cross | off |
High Tide | 3:36AM7.15m | 4:18PM7.38m | 4:45AM7.40m | 5:18PM7.78m | 5:41AM7.77m | 6:06PM8.20m | 6:27AM8.12m | 6:47PM8.55m | 7:06AM8.42m | 7:24PM8.82m | 7:42AM8.66m | 7:59PM9.04m | ||||||||
Low Tide | 9:16PM3.29m | 9:53AM3.26m | 10:24PM3.08m | 10:57AM2.97m | 11:22PM2.74m | 11:49AM2.60m | 00:10AM2.37m | 12:31PM2.27m | 00:51AM2.06m | 1:08PM1.99m | 1:28AM1.79m | 1:43PM1.77m | 2:03AM1.57m | |||||||
 |  | |  | | | |  | | | | |  | | | | |  | | | |
 | — | — | 5:28 | — | — | 5:28 | — | — | 5:31 | — | — | 5:31 | — | — | 5:33 | — | — | 5:35 | — | — |
 | — | 9:16 | — | — | 9:15 | — | — | 9:14 | — | — | 9:12 | — | — | 9:10 | — | — | 9:08 | — | — | 9:07 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — |
Temp °C | 22 | 17 | 19 | 18 | 17 | 19 | 19 | 17 | 18 | 18 | 17 | 21 | 23 | 20 | 20 | 21 | 19 | 19 | 21 | 18 |
Feels °C | 18 | 14 | 14 | 13 | 15 | 14 | 14 | 15 | 14 | 15 | 17 | 22 | 22 | 19 | 18 | 18 | 18 | 17 | 17 | 16 |
Swell 1 Height (m) Direction Period (s) | W 8 | WNW 3 | W 8 | — | — | — | — | W 6 | W 6 | — | W 6 | W 6 | WSW 5 | W 4 | W 5 | W 5 | W 3 | W 7 | W 10 | W 7 |
| kJ | 1 | 2 | 1 | — | — | — | — | 104 | 51 | — | 17 | 16 | 9 | 1 | 2 | 2 | 2 | 10 | 2 | 4 |
Swell 2 Height (m) Direction Period (s) | — | W 8 | — | — | — | — | — | — | — | — | W 9 | W 8 | W 8 | W 5 | W 11 | W 10 | W 10 | W 10 | — | W 9 |
| kJ | — | 1 | — | — | — | — | — | — | — | — | 2 | 1 | 1 | 2 | 2 | 2 | 8 | 2 | — | 2 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | W 8 | W 8 | W 8 | W 6 | — | — | W 9 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | 1 | 3 | — | — | 2 |
Wind waves Height (m) Direction Period (s) | — | N 3 | W 4 | W 4 | WSW 6 | W 7 | W 7 | — | — | WSW 6 | — | — | — | — | — | — | — | — | WSW 7 | W 4 |
| kJ | — | 1 | 2 | 22 | 82 | 130 | 161 | — | — | 50 | — | — | — | — | — | — | — | — | 17 | 7 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 913 | 441 | 899 | 414 | 441 | 781 | 361 | 0 | 133 | 262 | 59 | 136 | 189 | 189 | 190 | 360 | 189 | 206 | 376 | 414 |
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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