Surf Forecasts:
Crab Island surf forecast from 3 Aug 2026:
- Best quality surf: Sunday 9 Aug, 7PM (local time) - 2ft (0.6m), 9s period, WNW swell with glassy winds.
- Most powerful swell: Saturday 8 Aug, 7AM (local time) - 8ft (2.5m), 9s period, W swell with 1,051 kJ wave energy.
- Next surfable swell (1★+): Sunday 9 Aug, 7PM (local time) - 2ft (0.6m), 9s 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 Sunday (Aug 09) at 7PM. The primary swell is predicted to be 0.6m and 9s period with a secondary swell of 0.1m and 6s. Another secondary swell of 0.8m and 6s is also forecast. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Crab Island in the next 16 days are 2.5m 9s and forecast to arrive on Saturday (Aug 08) at 7AM. Winds are predicted to be onshore at the time the swell arrives.
| Wave Type | Time (IST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7PM (Sun 9th Aug) | 2ft (0.6m) 9s |
| Best Surf | 7PM (Sun 9th Aug) | 2ft (0.6m) 9s |
| Most Powerful | 7AM (Sat 8th Aug) | 8ft (2.5m) 9s |
Table - best surf conditions forecast for Crab Island over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get straight into the forecast for Crab Island. It’s a reef break that’s exposed to the west, and it’s a spot that only really fires when everything lines up right. Gotta be honest with you, the next sixteen days are a real mixed bag, with a whole lot of nothing good for a long stretch.
The first week and a half is pretty grim. From the start of August right through to the 15th, we’ve got a series of poor surf conditions. The swell is tiny, the wind is mostly onshore or cross-onshore, and the combined wave energy is weak, often sitting in the double digits. It’s a long, flat spell for the most part. There’s a brief moment on the morning of the 11th with glassy conditions, but the swell is still only 2 feet, so it’s not really worth the paddle out.
Then things start to look a little more interesting as we head into the second week. The real standout, the one to get excited about, is the morning of Sunday, August 16th. The forecast shows a solid 7ft swell from the WNW, with a period of 8 seconds. The wind is light and coming from the east, which is offshore for this spot, meaning it’s going to be clean. The combined energy hits 520 (moderate wave energy), and the rating says the surf should be very good. This is the best on offer across the whole period, but keep in mind, that swell is over 7ft, so this is expert territory. The wave energy is solid, and with offshore wind, this reef is going to be firing. The water temperature is currently 62°F, which is about 1°F warmer than normal, so it’s pretty average for the time of year.
The morning of the 16th is the only real standout. The afternoon of the same day drops off with a cross-on wind and a marginal call. The following few days after that, the swell backs off and the winds get messy again.
So, to sum it up: there’s a long, flat period with no surf until the 16th. If you’re an expert, that Sunday morning is your window. It’s a promising call, but it’s over a week away, so keep an eye on it. For the rest of us, it’s a good time to get the gear sorted.
Rusty.
Short Range ForecastLight rain (total 8mm), mostly falling on Mon night. Very mild (max 18°C on Mon morning, min 14°C on Tue night). Winds increasing (light winds from the SW on Tue morning, strong winds from the WNW by Tue night). | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Sat morning. Very mild (max 16°C on Fri morning, min 14°C on Sat night). Winds decreasing (fresh winds from the WSW on Fri night, light winds from the W by Sat night). | ||||||||||||||||||||
Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | |||||||||||||||
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) | SW 9 | SW 8 | SW 8 | WSW 7 | WSW 3 | WNW 6 | WNW 7 | WNW 6 | WNW 6 | WNW 6 | W 6 | W 6 | WSW 6 | W 9 | W 9 | W 9 | W 9 | WNW 9 | WNW 10 | WNW 9 | WNW 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 39 | 24 | 9 | 5 | 6 | 260 | 356 | 233 | 155 | 50 | 32 | 38 | 121 | 407 | 715 | 702 | 445 | 304 | 283 | 173 | 73 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | cross-off | cross-on | on | cross-on | cross-on | cross-on | cross-on | on | on | cross-on | cross-on | cross-on | cross-on | on | on | on | on | on | glassy |
High Tide | 9:06PM4.07m | 9:36AM3.86m | 9:48PM3.89m | 10:21AM3.73m | 10:38PM3.67m | 11:16AM3.58m | 11:41PM3.47m | 12:24PM3.48m | 1:00AM3.35m | 1:43PM3.50m | 2:26AM3.42m | 3:01PM3.69m | 3:44AM3.65m | ||||||||
Low Tide | 2:46PM0.69m | 3:09AM0.50m | 3:25PM0.83m | 3:49AM0.70m | 4:11PM1.03m | 4:39AM0.95m | 5:11PM1.23m | 5:45AM1.20m | 6:36PM1.35m | 7:17AM1.32m | 8:15PM1.24m | 8:48AM1.20m | 9:32PM0.91m | ||||||||
 |  |  |  |  | |  | |  | | | | | | | | | | | |  | |
 | 5:56 | — | — | 5:58 | — | — | 6:00 | — | — | 6:01 | — | — | 6:03 | — | — | 6:05 | — | — | 6:07 | — | — |
 | — | — | 9:29 | — | — | 9:27 | — | — | 9:24 | — | — | 9:22 | — | — | 9:21 | — | — | 9:19 | — | — | 9:16 |
mm | — | 1 | 3 | 2 | — | 2 | — | — | — | — | — | — | — | — | — | 2 | — | — | — | — | — |
Temp °C | 18 | 18 | 16 | 17 | 16 | 15 | 15 | 15 | 14 | 15 | 15 | 15 | 16 | 16 | 15 | 15 | 15 | 15 | 15 | 16 | 16 |
Feels °C | 14 | 15 | 15 | 17 | 12 | 8 | 7 | 8 | 8 | 11 | 11 | 13 | 11 | 12 | 10 | 11 | 12 | 14 | 14 | 15 | 16 |
Swell 1 Height (m) Direction Period (s) | SW 9 | SW 8 | SW 8 | SW 4 | W 11 | — | — | — | — | W 10 | W 10 | W 7 | W 9 | — | — | — | — | SW 8 | WNW 10 | — | WNW 7 |
| kJ | 39 | 24 | 9 | 3 | 2 | — | — | — | — | 17 | 16 | 24 | 25 | — | — | — | — | 2 | 283 | — | 73 |
Swell 2 Height (m) Direction Period (s) | NW 7 | NW 7 | W 10 | WSW 7 | W 7 | — | — | — | — | — | — | W 9 | — | — | — | — | — | — | SW 7 | — | NW 9 |
| kJ | 2 | 2 | 7 | 5 | 1 | — | — | — | — | — | — | 16 | — | — | — | — | — | — | 2 | — | 20 |
Swell 3 Height (m) Direction Period (s) | — | — | N 6 | W 9 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | 1 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | ENE 2 | — | — | — | WSW 3 | WNW 6 | WNW 7 | WNW 6 | WNW 6 | WNW 6 | W 6 | W 6 | WSW 6 | W 9 | W 9 | W 9 | W 9 | WNW 9 | — | WNW 9 | — |
| kJ | 1 | — | — | — | 6 | 260 | 356 | 233 | 155 | 50 | 32 | 38 | 121 | 407 | 715 | 702 | 445 | 304 | — | 173 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 92 | 107 | 67 | 67 | 257 | 257 | 300 | 1080 | 353 | 99 | 552 | 92 | 92 | 300 | 97 | 97 | 97 | 87 | 63 | 92 | 0 |
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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