
Surf Forecasts:
Crab Island surf forecast from 7 Sep 2026:
- Most powerful swell: Monday 7 Sep, 10AM (local time) - 8ft (2.4m), 13s period, WSW swell with 1,815 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 2.4m 13s and forecast to arrive on Monday (Sep 07) at 10AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Thursday (Sep 10) at 4AM.
| Wave Type | Time (IST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10AM (Mon 7th Sep) | 8ft (2.4m) 13s |
Table - best surf conditions forecast for Crab Island over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s on the cards for the next couple of weeks.
Honestly, it’s a rough start. We’re looking at a solid block of poor conditions right through the first week and into the second. The wind is just relentless, howling from the southwest and northwest, and it’s messing up everything. You’ll see some serious swell energy come through—like 1815 (moderate) on Monday the 7th and 2038 (strong) on the 14th—but the onshore and cross-onshore wind is going to leave it all lumpy and chopped out. For a spot like Crab Island (Clare), an advanced reef break that’s fairly consistent, it’s a real gut punch. The water temp is about average for this time of year, so at least you won’t be freezing while you’re staring at junk.
The only glimmer of hope comes towards the end of the run. On the morning of Tuesday the 16th of September, things finally look like they might line up. We’ve got a 7 ft swell from the WSW with a period of 8 seconds, but the big news is the wind shifting to a light cross-offshore from the southeast. That’s going to clean things right up. The combined energy is 588 (moderate), so it’s not a monster, but it’ll be surfable. The score is a 2, but compared to everything else, that’s a win. Keep in mind the swell direction is WSW, and this break loves it from the west, so it’s a bit off the optimum, but with clean conditions we’ll take it.
Then there’s a potential standout way out on Saturday the 19th of September. The forecast shows a massive 12 ft swell from the west with a 12-second period, and the combined energy is a whopping 3809 (very strong). That’s a lot of water moving. For the afternoon, the wind goes cross-shore from the south, and the report says it’s wind and tide favorable, but the swell is predicted to be too big for this break. At 12 ft, this is strictly for experts only. The period is 12 seconds, so it’s a proper groundswell, and at a reef break like Crab Island, it could be absolutely pumping, but it’s going to be a heavy, dangerous day. Expect crowds, because this spot is often busy when it’s good.
The very last entry, on the morning of Monday the 22nd of September, shows another promising window. We’re looking at a 8 ft swell from the west with a 14-second period, giving us 1950 (strong) combined energy. The wind is a light cross-shore from the north-northwest, only 3 mph, almost glassy. That’s a long-period groundswell, which is a good sign for shape and power, but it can make things a bit fat at a beach break; at a reef like this, it should be fantastic. The score is a 3, the best of the entire forecast. This is the one to circle on the calendar, but it’s over two weeks away, so don’t lock it in yet.
So, to sum it up: the first week and a half is a write-off. The 16th gives us a brief, clean window, but the real prize is the 19th for the brave, and the 22nd for the hopeful. Stay patient.
Rusty.
Short Range ForecastModerate rain (total 11mm), heaviest on Mon afternoon. Very mild (max 16°C on Sun night, min 12°C on Mon afternoon). Winds decreasing (strong winds from the NW on Tue morning, light winds from the NW by Wed morning). | Days 4-6 Weather SummaryModerate rain (total 15mm), heaviest on Sat morning. Very mild (max 17°C on Thu morning, min 13°C on Wed night). Winds decreasing (strong winds from the SSW on Wed night, light winds from the WSW by Fri afternoon). | ||||||||||||||||||||
Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | |||||||||||||||
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) | WSW 13 | WSW 10 | W 9 | W 9 | WNW 10 | WNW 10 | W 9 | W 8 | WSW 7 | WSW 9 | WSW 10 | WSW 9 | W 8 | W 8 | W 10 | WNW 13 | W 13 | WNW 13 | WNW 12 | WNW 11 | WSW 5 |
Wave Graph | |||||||||||||||||||||
1815 | 1043 | 899 | 1148 | 1219 | 717 | 263 | 157 | 143 | 442 | 631 | 283 | 217 | 223 | 345 | 643 | 1419 | 623 | 306 | 164 | 106 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-off | cross-on | cross-on | cross-on | cross-on | cross-on | cross |
High Tide | 2:58PM3.67m | 3:44AM3.66m | 4:01PM4.02m | 4:39AM3.98m | 4:51PM4.35m | 5:24AM4.26m | 5:34PM4.59m | 6:03AM4.44m | 6:13PM4.70m | 6:40AM4.52m | 6:51PM4.69m | 7:14AM4.49m | 7:27PM4.56m | ||||||||
Low Tide | 8:50AM1.29m | 9:32PM0.84m | 9:52AM0.95m | 10:24PM0.44m | 10:40AM0.61m | 11:07PM0.10m | 11:21AM0.33m | 11:46PM-0.11m | 11:59AM0.15m | 00:22AM-0.19m | 12:35PM0.08m | 00:57AM-0.12m | 1:10PM0.13m | 1:30AM0.06m | |||||||
6:56 | — | — | 6:58 | — | — | 7:00 | — | — | 7:01 | — | — | 7:03 | — | — | 7:05 | — | — | 7:05 | — | — | |
— | 8:13 | — | — | 8:10 | — | — | 8:07 | — | — | 8:06 | — | — | 8:04 | — | — | 8:00 | — | — | 7:59 | — | |
mm | 2 | 6 | 1 | 1 | 1 | — | — | — | 3 | 2 | 2 | — | — | — | 3 | 5 | — | — | — | — | — |
Temp °C | 16 | 13 | 14 | 14 | 14 | 14 | 14 | 15 | 15 | 17 | 17 | 16 | 14 | 14 | 16 | 17 | 17 | 16 | 16 | 17 | 16 |
Feels °C | 9 | 8 | 7 | 5 | 6 | 7 | 12 | 10 | 10 | 12 | 12 | 14 | 11 | 12 | 11 | 13 | 15 | 16 | 13 | 14 | 12 |
Swell 1 Height (m) Direction Period (s) | — | — | — | — | — | — | W 9 | W 8 | WSW 7 | WSW 9 | — | NW 9 | W 8 | W 8 | W 10 | WNW 13 | W 13 | WNW 13 | WNW 12 | WNW 11 | WNW 10 |
— | — | — | — | — | — | 263 | 157 | 143 | 442 | — | 3 | 217 | 223 | 345 | 643 | 1419 | 623 | 306 | 164 | 55 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | W 13 | W 12 | — | — | — | — | W 18 | WNW 13 | — | — | WSW 8 | WSW 8 | WSW 8 | — |
— | — | — | — | — | — | — | 3 | 11 | — | — | — | — | 6 | 317 | — | — | 107 | 48 | 53 | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | WSW 13 | WSW 10 | W 9 | W 9 | WNW 10 | WNW 10 | — | — | — | — | WSW 10 | WSW 9 | — | — | — | WSW 8 | — | — | — | SW 3 | WSW 5 |
1815 | 1043 | 899 | 1148 | 1219 | 717 | — | — | — | — | 631 | 283 | — | — | — | 355 | — | — | — | 2 | 106 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 138 | 414 | 163 | 393 | 617 | 498 | 97 | 117 | 248 | 138 | 292 | 99 | 138 | 101 | 27 | 97 | 97 | 67 | 82 | 97 | 101 |
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.










