
Surf Forecasts:
Crab Island surf forecast from 8 Aug 2026:
- Best quality surf: Wednesday 12 Aug, 1AM (local time) - 3.5ft (1.1m), 10s period, WSW swell with cross-offshore winds.
- Most powerful swell: Wednesday 12 Aug, 7PM (local time) - 4.5ft (1.3m), 11s period, WSW swell with 394 kJ wave energy.
- Next surfable swell (1★+): Monday 10 Aug, 7AM (local time) - 2.5ft (0.8m), 8s 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 Monday (Aug 10) at 7AM. The primary swell is predicted to be 0.8m and 8s period. 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 1.3m 11s and forecast to arrive on Wednesday (Aug 12) at 7PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Tuesday (Aug 11) at 10AM.
| Wave Type | Time (IST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Mon 10th Aug) | 2.5ft (0.8m) 8s |
| Best Surf | 1AM (Wed 12th Aug) | 3.5ft (1.1m) 10s |
| Most Powerful | 7PM (Wed 12th Aug) | 4.5ft (1.3m) 11s |
Table - best surf conditions forecast for Crab Island over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s take a look at what’s coming up for the next couple of weeks.
Right off the bat, we’re looking at a pretty grim start. The first few days are a write-off, with poor surf conditions and a messy, cross-shore wind. The water temp is sitting at 62°, which is a touch warmer than usual for this time of year, so that’s a small comfort.
We’ve got a big gap of almost nothing until things start to perk up. The first real glimmer of hope comes on Monday morning, August 10th. It’s tiny – just 3 ft from the west with a short period of 8 seconds, and the combined energy is weak (83). But the wind goes glassy, which is a rare treat. It’s surfable, but barely. Don’t expect much.
The next standout is Wednesday morning, August 12th. The swell bumps up to 4 ft from the west-southwest (9 seconds), and the combined energy jumps to a moderate 203. The wind is light and cross-off, keeping it clean. This is the first session that’s genuinely worth getting out of bed for. The break is Crab Island, a reef setup that’s fairly consistent. Being a reef, it’ll handle that longer period nicely. Keep in mind, crowds are often a problem here.
Moving into the second week, things get more interesting, but less certain. The big one on the radar is Thursday morning, August 20th. We’re talking a solid 8 ft swell from the west-northwest with a period of 11 seconds. The combined energy is a massive 1277 – that’s strong energy. The wind is light and cross, so conditions will be clean. This is only for the experts though, as it’s well over 8 ft. It’s a long way out, so take it as a promising outlook, but forecasts can change.
Friday morning, August 21st, looks like a nice cleanup. The swell drops to 4 ft from the west (10 seconds, moderate energy at 226), but the wind goes offshore from the east. That’s going to be clean and lined up, perfect for a reef like Crab Island.
Saturday morning, August 22nd, also gets a mention. The swell is 5 ft from the west-southwest (7 seconds, combined energy 224) with a clean cross-off breeze. It’s a bit short period, so it might be a bit fat, but it’s definitely surfable.
If you’re a beginner, the first week has nothing for you. The 8 ft and 8 ft swells in the second week are expert territory. The smaller, cleaner days around 4 ft to 5 ft are your best bet.
Alright, that’s the long-range picture. Stay tuned, because the forecasts can change and this run of poor surf won’t last forever.
Rusty.
Short Range ForecastSome drizzle, heaviest during Sat night. Warm (max 21°C on Mon night, min 14°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummarySome drizzle, heaviest during Wed afternoon. Warm (max 24°C on Tue afternoon, min 15°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | |||||||||||||||
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 | WNW 9 | W 9 | W 9 | W 9 | W 8 | W 8 | W 8 | W 7 | W 7 | W 11 | WSW 10 | WSW 9 | WSW 9 | WSW 11 | WSW 10 | W 10 | W 9 | W 8 | W 8 | W 8 |
Wave Graph | |||||||||||||||||||||
207 | 119 | 217 | 165 | 220 | 137 | 82 | 57 | 39 | 15 | 89 | 223 | 203 | 158 | 343 | 294 | 319 | 313 | 273 | 195 | 133 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | on | cross-on | cross-on | cross-on | glassy | cross-on | cross-off | cross-off | cross-on | cross-off | cross-off | on | cross-on | cross-on | on | on | on | on | on |
High Tide | 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 | 6:24AM4.40m | 6:35PM4.76m | 7:07AM4.48m | 7:17PM4.78m | ||||||||
Low Tide | 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 | 12:18PM0.21m | 00:47AM-0.23m | 12:59PM0.14m | 1:26AM-0.21m | ||||||||
6:05 | — | — | 6:07 | — | — | 6:07 | — | — | 6:09 | — | — | 6:11 | — | — | 6:13 | — | — | 6:15 | — | — | |
— | — | 9:19 | — | — | 9:16 | — | — | 9:15 | — | — | 9:13 | — | — | 9:10 | — | — | 9:08 | — | — | 9:07 | |
mm | — | — | 1 | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — |
Temp °C | 17 | 16 | 16 | 16 | 16 | 16 | 17 | 20 | 21 | 22 | 24 | 20 | 21 | 20 | 18 | 17 | 16 | 15 | 15 | 14 | 14 |
Feels °C | 14 | 13 | 14 | 14 | 12 | 14 | 17 | 19 | 21 | 20 | 23 | 20 | 21 | 20 | 18 | 15 | 13 | 13 | 12 | 10 | 11 |
Swell 1 Height (m) Direction Period (s) | W 9 | WNW 9 | W 9 | W 9 | — | W 8 | W 8 | W 8 | W 7 | W 7 | W 11 | WSW 10 | WSW 9 | WSW 9 | WSW 11 | WSW 10 | — | — | W 8 | W 8 | W 8 |
207 | 119 | 217 | 165 | — | 137 | 82 | 57 | 39 | 15 | 89 | 223 | 203 | 158 | 343 | 294 | — | — | 273 | 195 | 133 | |
Swell 2 Height (m) Direction Period (s) | SW 8 | — | SW 7 | — | — | — | S 6 | S 6 | W 10 | W 9 | SSW 6 | — | — | W 12 | — | — | — | — | — | — | — |
3 | — | 2 | — | — | — | 1 | 1 | 8 | 6 | 4 | — | — | 76 | — | — | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | S 6 | NW 8 | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | 1 | 2 | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | WSW 6 | — | WSW 2 | W 9 | — | — | — | — | SE 3 | — | — | — | WSW 3 | — | — | W 10 | W 9 | — | — | — |
— | 54 | — | 1 | 220 | — | — | — | — | 2 | — | — | — | 1 | — | — | 319 | 313 | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 27 | 115 | 99 | 101 | 101 | 101 | 0 | 11 | 63 | 92 | 16 | 0 | 0 | 99 | 92 | 99 | 422 | 138 | 164 | 687 | 79 |
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.











