
Surf Forecasts:
Crab Island surf forecast from 22 Jul 2026:
- Most powerful swell: Sunday 26 Jul, 4AM (local time) - 6ft (1.8m), 10s period, WNW swell with 575 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 1.8m 10s and forecast to arrive on Sunday (Jul 26) at 4AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 2s period and expected on Thursday (Jul 23) at 1AM.
| Wave Type | Time (IST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4AM (Sun 26th Jul) | 6ft (1.8m) 10s |
Table - best surf conditions forecast for Crab Island over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s get into it.
Crab Island is a reef break that’s exposed to the swell, and it’s an advanced wave. It’s fairly consistent, but let me tell you, the next couple of weeks look tough. The water temp is about what you’d expect for this time of year, nothing unusual.
The first real chance of any energy comes Wednesday, July 22nd, but it’s only 1ft from the west, with a weak combined energy of just 18. The wind is a cross-offshore in the morning, which would keep it clean, but there’s basically no wave to ride. The afternoon goes cross-on and choppy, so that’s a miss. Thursday and Friday don’t get any better with tiny swell and onshore winds.
We hit the weekend, July 25th and 26th, and the swell picks up to 5ft to 6ft, west/northwest. The combined energy climbs into the hundreds (147 to 456), so there’s some power in the water, but the wind is straight onshore or cross-onshore, with moderate to fresh breezes. The surf will be lumpy and messy. Not the kind of day you paddle out for.
Monday July 27th through Tuesday July 28th sees the biggest swell of the window so far, reaching 6ft from the west, with combined energy peaking at 498. But again, the wind is a fresh cross-onshore, making it choppy and poor. The period is short (8-10 seconds), so it’s not going to have much shape.
The swell drops back to 3ft on Wednesday July 29th, and by Thursday July 30th it’s down to 2ft. The wind is still messy, cross-shore and cross-on. No go.
Friday July 31st is the first real standout, but you have to be careful. The swell jumps to 8ft from the west-southwest, with a period of 10 seconds. The combined energy hits 1075, which is strong. However, the wind is a fresh cross-shore, creating lumpy conditions. With swell over 8ft on Saturday August 1st, this is expert territory only. At 7ft to 8ft, with fresh cross-onshore winds and onshore winds, this setup is more interesting for kite surfing than paddle surfing. The quality is poor, so unless you’re a seasoned charger looking for a beating, I’d sit this out.
Sunday August 2nd through Monday August 3rd, the swell fades quickly from 6ft down to 2ft. The wind improves a little, but by then there’s no wave.
The best window, and I mean the only real window that looks promising, is Wednesday August 5th. The swell picks up to 6ft from the west-southwest, with a long period of 11 seconds. The combined energy is 763, so there’s solid power. The wind is a moderate cross-onshore, which will create some chop, but with that long period, Crab Island’s reef structure could offer some decent, lined-up waves. It’s not the cleanest, but it’s the best on offer in this 16-day stretch. Crowds are often at this spot, so expect company.
The long gap before any real action is clear: from July 22nd right through to August 5th, it’s a long, frustrating wait with nothing but poor conditions.
Rusty out.
Short Range ForecastMostly dry. Warm (max 20°C on Wed afternoon, min 11°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Sat morning. Very mild (max 17°C on Mon morning, min 14°C on Fri night). Mainly fresh winds. | ||||||||||||||||||||
Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | |||||||||||||||
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 9 | W 9 | W 9 | W 8 | W 8 | W 8 | WNW 9 | WNW 8 | WNW 8 | W 6 | WNW 9 | WNW 10 | WNW 9 | W 9 | WNW 9 | W 9 | W 8 | W 9 | W 10 | W 9 | W 9 |
Wave Graph | |||||||||||||||||||||
15 | 14 | 13 | 12 | 12 | 12 | 47 | 90 | 77 | 121 | 374 | 435 | 456 | 380 | 177 | 498 | 481 | 450 | 408 | 392 | 281 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | cross-off | cross-off | on | cross-on | on | on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on |
High Tide | 12:07PM3.38m | 00:31AM3.22m | 1:08PM3.26m | 1:41AM3.09m | 2:16PM3.25m | 2:55AM3.11m | 3:22PM3.36m | 3:59AM3.25m | 4:17PM3.54m | 4:49AM3.43m | 5:02PM3.76m | 5:31AM3.62m | 5:41PM3.97m | ||||||||
Low Tide | 5:42AM1.24m | 6:20PM1.48m | 6:51AM1.48m | 7:43PM1.56m | 8:09AM1.56m | 8:58PM1.48m | 9:16AM1.50m | 9:55PM1.31m | 10:08AM1.34m | 10:40PM1.09m | 10:51AM1.15m | 11:20PM0.86m | 11:28AM0.95m | 11:55PM0.65m | |||||||
5:37 | — | — | 5:39 | — | — | 5:41 | — | — | 5:43 | — | — | 5:43 | — | — | 5:46 | — | — | 5:47 | — | — | |
— | — | 9:47 | — | — | 9:45 | — | — | 9:45 | — | — | 9:43 | — | — | 9:42 | — | — | 9:39 | — | — | 9:38 | |
mm | — | — | — | — | — | — | — | — | — | 1 | 1 | — | — | — | — | — | — | — | 1 | — | — |
Temp °C | 15 | 20 | 17 | 17 | 17 | 15 | 15 | 15 | 16 | 16 | 15 | 15 | 15 | 15 | 16 | 17 | 17 | 17 | 16 | 16 | 14 |
Feels °C | 12 | 18 | 14 | 16 | 15 | 12 | 12 | 11 | 13 | 13 | 12 | 9 | 9 | 9 | 12 | 13 | 13 | 13 | 12 | 13 | 11 |
Swell 1 Height (m) Direction Period (s) | W 9 | W 9 | NW 5 | W 8 | W 8 | W 8 | WNW 9 | — | — | NW 10 | — | — | — | — | WNW 9 | — | — | — | W 10 | — | W 9 |
15 | 14 | 4 | 12 | 12 | 12 | 47 | — | — | 26 | — | — | — | — | 177 | — | — | — | 408 | — | 281 | |
Swell 2 Height (m) Direction Period (s) | WNW 5 | — | W 9 | NW 4 | — | WNW 11 | W 8 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
3 | — | 13 | 1 | — | 12 | 5 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | NNE 2 | WNW 2 | NE 2 | — | NW 3 | NW 4 | WNW 3 | WNW 8 | WNW 8 | W 6 | WNW 9 | WNW 10 | WNW 9 | W 9 | WSW 5 | W 9 | W 8 | W 9 | — | W 9 | — |
1 | 1 | 1 | — | 2 | 9 | 1 | 90 | 77 | 121 | 374 | 435 | 456 | 380 | 66 | 498 | 481 | 450 | — | 392 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 148 | 1040 | 63 | 293 | 416 | 138 | 127 | 1091 | 138 | 101 | 97 | 680 | 617 | 617 | 97 | 97 | 97 | 97 | 97 | 117 | 97 |
Best forecast wave conditions in Clare | |||||||||||||||||||||
Best forecast wave conditions in Ireland | |||||||||||||||||||||
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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.
Are you planning a holiday in Clare? If you are looking for accommodation near Crab Island, camping, hotels and holiday cottages in Clare, consider staying in Galway which is 35 km (22 miles) away. Other places in and around Clare where you can find information about places to rent, and car hire include Inis which is 35 km (22 miles) away, Shannon, Foynes and Limerick.










