Surf Forecasts:
Crab Island surf forecast from 6 Aug 2026:
- Best quality surf: Saturday 8 Aug, 4AM (local time) - 4ft (1.2m), 10s period, WNW swell with cross-offshore winds.
- Most powerful swell: Thursday 13 Aug, 4AM (local time) - 5ft (1.6m), 10s period, WSW swell with 480 kJ wave energy.
- Next surfable swell (1★+): Saturday 8 Aug, 4AM (local time) - 4ft (1.2m), 10s period with WNW 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 Saturday (Aug 08) at 4AM. The primary swell is predicted to be 1.2m and 10s period with a secondary swell of 0.1m and 9s. 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 1.6m 10s and forecast to arrive on Thursday (Aug 13) 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 Tuesday (Aug 11) at 10AM.
| Wave Type | Time (IST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Sat 8th Aug) | 4ft (1.2m) 10s |
| Best Surf | 4AM (Sat 8th Aug) | 4ft (1.2m) 10s |
| Most Powerful | 4AM (Thu 13th Aug) | 5ft (1.6m) 10s |
Table - best surf conditions forecast for Crab Island over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s look at what’s on offer.
Well, I’m not gonna lie to you, it’s a tough stretch ahead here at Crab Island. The whole 16-day window is a bit of a grind. We’ve got a long gap of poor conditions right from the start, so don't bother paddling out for the first few days. The first real chance to even think about it comes on Saturday the 8th, but even then, it’s a pretty desperate pick.
The best of a bad bunch looks like Saturday morning, the 8th of August. We’ve got a 4 ft swell rolling in from the west with a 9-second period, and the combined swell energy is moderate at 208. The wind is a light cross-offshore breeze, which should keep the surface clean. It’s not big, but for a reef break like this, it’ll be the cleanest we see all window. Water temp is sitting at 62°, which is about normal for this time of year, so not a shock to the system. Keep in mind this spot is a fairly consistent, advanced-level reef break, and with the rating it has, crowds are possible here.
After that Saturday morning, it drops off again. The rest of the 16 days is a write-off. We get some bigger swell, like 5 ft and 5 ft on Wednesday the 12th and Thursday the 13th, with strong wave energy readings (437 and 418), but the wind is onshore or cross-onshore, chopping it up and making it look more like a mess than a wave. That kind of bumpy, onshore wind with that size is going to be a battle.
Honestly, for the rest of the period, nearly every session is marked as poor surf. The wind is always cross-on or onshore, the period is short, and the swell is often small and weak. Even the longer period groundswell that shows up on the 19th of August (13 seconds) is let down by strong onshore winds. There’s just no clean, rideable quality to be found.
So, if you’re desperate, that Saturday morning is your only real chance. Otherwise, it’s a blank run. This is a pretty normal dry spell for the area; forecasts can change, but right now, don’t hold your breath.
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Sat night. Very mild (max 18°C on Sat morning, min 14°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummarySome drizzle, heaviest during Tue night. Warm (max 22°C on Tue morning, min 15°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | |||||||||||||||
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 10 | W 10 | W 5 | W 5 | W 10 | WNW 10 | W 9 | WNW 9 | WNW 9 | WNW 9 | WNW 8 | W 8 | W 8 | W 8 | W 7 | W 7 | W 11 | WSW 10 | WSW 9 | WSW 10 | WSW 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 21 | 20 | 28 | 33 | 273 | 282 | 202 | 106 | 113 | 126 | 120 | 133 | 80 | 74 | 38 | 23 | 89 | 332 | 199 | 437 | 433 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | cross-on | cross-on | cross-on | cross-off | cross-on | cross-on | on | on | on | cross-on | cross-on | glassy | cross-off | cross-on | cross-off | cross | cross-on | cross-on |
High Tide | 11:16AM3.58m | 11:41PM3.47m | 12:24PM3.48m | 1:00AM3.35m | 1:43PM3.50m | 2:26AM3.42m | 3:01PM3.69m | 3:44AM3.65m | 4:08PM4.00m | 4:47AM3.95m | 5:03PM4.33m | 5:39AM4.22m | 5:51PM4.60m | ||||||||
Low Tide | 5:11PM1.23m | 5:45AM1.20m | 6:36PM1.35m | 7:17AM1.32m | 8:15PM1.24m | 8:48AM1.20m | 9:32PM0.91m | 9:55AM0.93m | 10:31PM0.52m | 10:49AM0.63m | 11:21PM0.16m | 11:36AM0.38m | 00:05AM-0.10m | ||||||||
 | |  |  | | |  | |  | | |  | | | | | |  | | | | |
 | 6:01 | — | — | 6:03 | — | — | 6:05 | — | — | 6:07 | — | — | 6:07 | — | — | 6:09 | — | — | 6:11 | — | — |
 | — | — | 9:22 | — | — | 9:21 | — | — | 9:19 | — | — | 9:16 | — | — | 9:15 | — | — | 9:13 | — | — | 9:10 |
mm | — | — | — | — | — | — | — | — | 3 | — | — | — | — | — | — | — | — | 1 | — | — | — |
Temp °C | 15 | 15 | 15 | 15 | 15 | 15 | 18 | 18 | 17 | 16 | 16 | 16 | 16 | 18 | 18 | 22 | 22 | 20 | 20 | 19 | 18 |
Feels °C | 11 | 11 | 12 | 11 | 11 | 13 | 14 | 15 | 14 | 14 | 14 | 15 | 16 | 17 | 18 | 20 | 20 | 17 | 18 | 16 | 15 |
Swell 1 Height (m) Direction Period (s) | W 10 | W 10 | W 9 | W 9 | W 10 | WNW 10 | W 9 | WNW 9 | WNW 9 | WNW 9 | WNW 8 | W 8 | W 8 | W 8 | W 7 | W 7 | W 11 | WSW 10 | WSW 9 | — | WSW 10 |
| kJ | 17 | 16 | 15 | 27 | 273 | 282 | 202 | 106 | 113 | 126 | 120 | 133 | 80 | 74 | 38 | 23 | 89 | 332 | 199 | — | 433 |
Swell 2 Height (m) Direction Period (s) | — | — | — | WNW 9 | — | — | WSW 8 | — | — | — | — | S 6 | — | S 6 | W 10 | W 9 | SW 6 | — | — | — | — |
| kJ | — | — | — | 7 | — | — | 6 | — | — | — | — | 1 | — | 1 | 8 | 6 | 14 | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 13 | NW 8 | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | 2 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | W 5 | W 5 | W 5 | W 5 | — | — | — | SW 7 | SW 7 | SW 6 | SW 6 | — | — | — | — | SSE 2 | — | — | — | WSW 10 | — |
| kJ | 21 | 20 | 28 | 33 | — | — | — | 75 | 88 | 6 | 1 | — | — | — | — | 1 | — | — | — | 437 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 101 | 101 | 92 | 92 | 97 | 16 | 0 | 139 | 27 | 114 | 117 | 98 | 63 | 67 | 12 | 67 | 139 | 16 | 101 | 293 | 99 |
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.
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