Crab Island Surf Break

Lat Long: 53.04° N 9.39° W

Crab Island Surf Forecast and Surf Report

Issued: 6 am 08 Aug 2026 (local time)

Forecast update in  hr  min

Today's Crab Island sea temperature is
16.5° C
0.8° 

Crab Island surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


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 TypeTime (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 Forecast

Some 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 Summary

Some 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
Rating
(10 max)
0
0
0
0
0
0
1
0
0
0
0
2
2
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.1
W
9
0.9
WNW
9
1.1
W
9
1
W
9
1.2
W
9
1
W
8
0.8
W
8
0.7
W
8
0.6
W
7
0.4
W
7
0.6
W
11
1.1
WSW
10
1.1
WSW
9
1
WSW
9
1.2
WSW
11
1.2
WSW
10
1.3
W
10
1.4
W
9
1.4
W
8
1.2
W
8
1
W
8
Wave Graph
Metric surfscale
Energy kJ
207
119
217
165
220
137
82
57
39
15
89
223
203
158
343
294
319
313
273
195
133
Wind (km/h)
20
S
20
SW
15
W
15
WSW
25
WSW
10
NW
5
SE
5
NW
10
SSE
20
SE
10
SSW
10
SSE
10
SE
15
W
15
SW
15
WSW
20
W
20
WNW
20
WNW
25
WNW
10
WNW
Wind State
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
cloud
cloud
light rain
part cloud
part cloud
part cloud
clear
clear
part cloud
part cloud
part cloud
part cloud
cloud
rain showers
part cloud
clear
clear
part cloud
part cloud
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:05
6:07
6:07
6:09
6:11
6:13
6:15
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
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
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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