Crab Island Surf Break

Lat Long: 53.04° N 9.39° W

Crab Island Surf Forecast and Surf Report

Issued: 12 am 30 Jul 2026 (local time)

Forecast update in  hr  min

Today's Crab Island sea temperature is
16.5° C
1.0° 

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 30 Jul 2026:

  • Best quality surf: Sunday 2 Aug, 10PM (local time) - 2ft (0.6m), 9s period, SW swell with offshore winds.
  • Most powerful swell: Friday 31 Jul, 4AM (local time) - 4ft (1.2m), 7s period, W swell with 130 kJ wave energy.
  • Next surfable swell (1★+): Sunday 2 Aug, 10PM (local time) - 2ft (0.6m), 9s period with SW 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 02) at 10PM. The primary swell is predicted to be 0.6m and 9s period with a secondary swell of 0.3m and 8s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Crab Island in the next 16 days are 1.2m 7s and forecast to arrive on Friday (Jul 31) at 4AM. Winds are predicted to be 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 Tuesday (Aug 04) at 1PM.

Wave TypeTime (IST) & Date Wave Height & Period
Next good surf (1 star+)10PM (Sun 2nd Aug)2ft (0.6m) 9s
Best Surf10PM (Sun 2nd Aug)2ft (0.6m) 9s
Most Powerful 4AM (Fri 31st Jul)4ft (1.2m) 7s

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 Crab Island.

Honestly, it’s a pretty bleak run for the next couple of weeks. We’re looking at a solid stretch of poor conditions with hardly anything to get excited about. The swell is tiny and weak, and the wind is mostly wrong for this place. It’s a reef break that needs a clean window, and we just aren’t getting one.

The first real chance of anything decent doesn’t roll around until Thursday the 13th of August. Even then, it’s only marginal. The morning shows a small 4ft swell from the west with a period of 9 seconds, and the combined energy is still moderate at 280. The wind is light from the south, keeping it cross-shore but with only small ripples. It’s not great, but it’s the first sign of life after days of nothing.

The standout, and I mean the only real standout in this whole 16-day outlook, arrives on Friday the 14th of August. That morning, we see a bump in swell to 6ft out of the west, with a period of 10 seconds – that’s a proper groundswell with good energy. The combined energy jumps to 586, which is strong. The wind is light from the north, giving us a clean, cross-offshore breeze. That’s the recipe for clean, well-shaped waves at this reef. Expect very good surf conditions. Keep in mind, though, that 6ft can be a bit much for beginners, and the period is long enough that it’ll be better for the reef setup than a beach break. Also, crowds are often around here, so don’t expect to have it to yourself.

Before that, it’s pretty much a write-off. From the 30th of July right through to the morning of the 13th of August, the swell is mostly below 3ft, with the combined energy rarely breaking 100. The wind is almost always onshore or cross-on, and the water temps are about average for this time of year. It’s a long dry spell, but the good news is this spot is fairly consistent, so a blank run like this isn’t the norm. Forecasts can change.

Rusty, signing off.

Short Range Forecast

Light rain (total 3mm), mostly falling on Thu night. Very mild (max 15°C on Wed night, min 14°C on Wed night). Mainly fresh winds.

Days 4-6 Weather Summary

Light rain (total 3mm), mostly falling on Sun night. Very mild (max 18°C on Mon afternoon, min 12°C on Sun night). Wind will be generally light.

Thursday
30
Friday
31
Saturday
1
Sunday
2
Monday
3
Tuesday
4
Wednesday
5
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
0
0
0
0
0
1
0
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)
0.9
WNW
8
1
W
8
1.1
W
7
1.1
W
7
1.1
W
7
0.8
WNW
6
0.4
WSW
9
0.5
WNW
7
0.4
WSW
8
0.3
W
10
0.5
SW
10
0.6
SW
9
0.4
SW
8
0.3
SW
8
0.2
SSW
8
0.1
W
11
0.1
W
11
0.2
W
10
0.2
W
10
0.2
W
11
0.3
W
10
Wave Graph
Metric surfscale
Energy kJ
107
115
110
110
104
53
31
25
23
17
45
67
25
10
6
2
2
8
9
10
19
Wind (km/h)
20
NW
25
W
20
W
25
W
25
W
15
WNW
15
WNW
15
W
5
NNE
10
E
10
SSW
10
ENE
25
ENE
20
NE
25
NE
25
NE
20
NE
15
NE
20
NE
15
NNE
15
NE
Wind State
cross-on
on
on
on
on
on
on
on
glassy
off
cross-on
off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
High Tide
6:42AM3.91m
6:50PM4.26m
7:16AM3.99m
7:23PM4.31m
7:49AM4.02m
7:56PM4.30m
8:22AM4.01m
8:30PM4.21m
8:58AM3.96m
9:06PM4.07m
9:36AM3.86m
9:48PM3.89m
10:21AM3.73m
10:38PM3.67m
Low Tide
12:34PM0.65m
1:00AM0.35m
1:06PM0.57m
1:31AM0.29m
1:38PM0.55m
2:02AM0.29m
2:11PM0.59m
2:34AM0.36m
2:46PM0.69m
3:09AM0.50m
3:25PM0.83m
3:49AM0.70m
4:11PM1.03m
clear
clear
rain showers
rain showers
part cloud
clear
clear
part cloud
cloud
cloud
light rain
light rain
cloud
cloud
cloud
cloud
cloud
rain showers
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:50
5:52
5:54
5:54
5:56
5:58
6:00
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:36
9:34
9:31
9:30
9:29
9:27
9:24
 mm
1
2
1
2
1
Temp °C
15
15
15
15
15
15
15
15
15
16
16
13
17
18
16
14
15
14
16
17
16
Feels °C
10
10
11
10
10
11
12
12
13
15
14
11
14
14
13
10
12
11
14
15
13
  • Map Icons:
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  • 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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