Surf Forecasts:
Crab Island surf forecast from 22 Jul 2026:
- Best quality surf: Sunday 26 Jul, 1PM (local time) - 3.5ft (1.1m), 7s period, W swell with cross-offshore winds.
- Most powerful swell: Sunday 26 Jul, 1PM (local time) - 3.5ft (1.1m), 7s period, W swell with 117 kJ wave energy.
- Next surfable swell (1★+): Sunday 26 Jul, 1PM (local time) - 3.5ft (1.1m), 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 1PM. The primary swell is predicted to be 1.1m and 7s 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 1.1m 7s and forecast to arrive on Sunday (Jul 26) at 1PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 5s period and expected on Wednesday (Jul 29) at 7PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1PM (Sun 26th Jul) | 3.5ft (1.1m) 7s |
| Best Surf | 1PM (Sun 26th Jul) | 3.5ft (1.1m) 7s |
| Most Powerful | 1PM (Sun 26th Jul) | 3.5ft (1.1m) 7s |
Table - best surf conditions forecast for Crab Island over the next 16 days.
The Lowdown
Alright crew, I’m Rusty, and I’ve got the lowdown on your local surf outlook for the next 16 days. Let’s break it down.
First up, we’re staring at a real dry spell. There’s nothing worth paddling out for over a long stretch, with most days showing tiny, weak swell and not much to get excited about. The water temp right now is sitting at 70°, which is far warmer than normal for this time of year – a pretty big anomaly you don’t see every day.
The first decent surf shape we see isn’t until Sunday, 26 July. That morning, Crab Island (this is your reef, intermediate-friendly spot) shows a bump to 5 ft swell from the west, with a period of 7 seconds and clean conditions thanks to that cross-offshore wind. The combined energy is moderate (325). That’s your first real chance to get wet, though it’s a punchy short-period swell, so it’ll be a bit crumbly.
Monday 27 July and Tuesday 28 July are a write-off – tiny, weak swell and dodgy wind.
But hold onto your hats: Sunday, 2 August afternoon is the standout of the entire run. Crab Island gets a 6 ft swell from the west-southwest, with a 7-second period and clean, glassy conditions as the wind goes light cross-off from the northwest. Combined energy is moderate (327). This is the best wave of the window – not massive, but clean and surfable. Keep in mind it’s a week and a half out, so treat it as a promising long-range call.
From 3 August onwards, things fade fast. Swell drops back under 3 ft, winds get messy again, and the quality just isn’t there. The run ends with a whimper.
Honestly, unless you’re a kite surfer, most of this fortnight is a beach day rather than a surf day. The gaps between decent surf are big – several days of nothing then one small window, then a big gap again before that Sunday afternoon on 2 August.
Stay patient. The forecasts can change, and the consistency is poor, so a blank run like this is more normal for the area.
Rusty.
Short Range ForecastMostly dry. Warm (max 24°C on Thu afternoon, min 15°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 20°C on Sun afternoon, min 13°C on Sun night). Winds decreasing (fresh winds from the WNW on Sat night, calm by Mon night). | |||||||||||||||||||
Wed 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | ||||||||||||||
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 9 | W 9 | W 9 | W 8 | NW 3 | W 13 | W 8 | W 3 | W 8 | W 4 | WSW 6 | W 7 | W 7 | W 7 | W 6 | W 6 | WSW 6 | WSW 6 | WSW 6 | W 11 |
Wave Graph  | ||||||||||||||||||||
 kJ | 7 | 6 | 2 | 1 | 2 | 3 | 1 | 2 | 1 | 21 | 64 | 113 | 97 | 56 | 36 | 26 | 7 | 6 | 6 | 3 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | glassy | cross-off | off | glassy | cross | cross-off | cross | cross | cross-off | cross-off | cross-off | off | cross-off | cross | cross-off | glassy | cross | cross |
High Tide | 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 | 6:27AM8.12m | 6:47PM8.55m | ||||||||
Low Tide | 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 | 12:31PM2.27m | 00:51AM2.06m | |||||||
 |  | |  |  | | | |  | | | | | | | | | | | | |
 | — | — | 5:24 | — | — | 5:26 | — | — | 5:28 | — | — | 5:28 | — | — | 5:31 | — | — | 5:31 | — | — |
 | — | 9:19 | — | — | 9:17 | — | — | 9:16 | — | — | 9:15 | — | — | 9:14 | — | — | 9:12 | — | — | 9:10 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 20 | 21 | 24 | 18 | 20 | 23 | 19 | 18 | 18 | 17 | 19 | 20 | 18 | 18 | 20 | 19 | 19 | 20 | 16 |
Feels °C | 20 | 19 | 20 | 22 | 15 | 18 | 19 | 16 | 14 | 15 | 15 | 17 | 16 | 15 | 14 | 16 | 16 | 17 | 17 | 15 |
Swell 1 Height (m) Direction Period (s) | W 9 | NW 4 | W 9 | W 8 | NW 3 | W 8 | W 8 | W 3 | W 8 | — | — | W 7 | — | W 7 | W 6 | W 6 | WSW 6 | WSW 6 | WSW 6 | W 5 |
| kJ | 7 | 2 | 2 | 1 | 2 | 1 | 1 | 2 | 1 | — | — | 113 | — | 56 | 36 | 26 | 7 | 6 | 6 | 2 |
Swell 2 Height (m) Direction Period (s) | — | W 9 | — | — | W 8 | — | — | W 8 | — | — | — | — | — | — | — | — | W 3 | W 8 | W 8 | W 8 |
| kJ | — | 6 | — | — | 1 | — | — | 1 | — | — | — | — | — | — | — | — | 1 | 1 | 1 | 1 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | W 13 | — | — | — | — | — | — | — | — | — | — | W 8 | — | — | W 11 |
| kJ | — | — | — | — | — | 3 | — | — | — | — | — | — | — | — | — | — | 6 | — | — | 3 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | NNW 3 | W 4 | W 4 | WSW 6 | — | W 7 | — | — | WSW 2 | — | — | — | W 3 |
| kJ | — | — | — | — | — | — | — | 1 | 1 | 21 | 64 | — | 97 | — | — | 1 | — | — | — | 2 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 438 | 348 | 86 | 842 | 135 | 448 | 729 | 427 | 414 | 441 | 361 | 20 | 371 | 14 | 21 | 206 | 127 | 163 | 361 | 190 |
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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