Crab Island Surf Break

Lat Long: 53.04° N 9.39° W

Crab Island Surf Forecast and Surf Report

Issued: 6 am 28 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 28 Jul 2026:

  • Best quality surf: Sunday 2 Aug, 7PM (local time) - 4ft (1.2m), 9s period, WSW swell with cross-offshore winds.
  • Most powerful swell: Tuesday 28 Jul, 10PM (local time) - 4.5ft (1.4m), 8s period, W swell with 273 kJ wave energy.
  • Next surfable swell (1★+): Sunday 2 Aug, 7PM (local time) - 4ft (1.2m), 9s period with WSW 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 7PM. The primary swell is predicted to be 1.2m and 9s period with a secondary swell of 0.2m and 7s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Crab Island in the next 16 days are 1.4m 8s and forecast to arrive on Tuesday (Jul 28) at 10PM. 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 Tuesday (Aug 04) at 1PM.

Wave TypeTime (IST) & Date Wave Height & Period
Next good surf (1 star+) 7PM (Sun 2nd Aug)4ft (1.2m) 9s
Best Surf 7PM (Sun 2nd Aug)4ft (1.2m) 9s
Most Powerful10PM (Tue 28th Jul)4.5ft (1.4m) 8s

Table - best surf conditions forecast for Crab Island over the next 16 days.


The Lowdown

Alright, let’s break it down. Crab Island is the only spot in the mix, and the whole 16-day outlook is a real bummer. The water’s at 62°F, which is about a degree warmer than usual for this time of year, so that’s a minor plus. But the surf? Barely a ripple.

The forecast starts on Tuesday, July 28th, with a weak 5ft swell from the west-southwest, but it’s got a short period of 8 seconds and a strong cross-onshore wind from the southwest at 19 mph. The combined energy is 308 (moderate), but the wind is wrecking it – messy and lumpy. Not surfable. Wednesday the 29th is smaller, 4ft to 3ft, with onshore wind, poor conditions. Energy drops to 182 then 120 (weak to moderate). Thursday the 30th is similar, 4ft, cross-onshore, choppy. Friday the 31st, 4ft with 19 mph onshore wind. The entire first week is a washout.

Then we hit a gap. Saturday, August 1st, swell drops to 3ft, energy down to 79 (weak). Sunday the 2nd, a tiny 1ft in the morning, but the wind goes cross-offshore from the southeast and conditions turn clean. The afternoon sees a bit more energy, 4ft from the west-southwest with a 9-second period and 178 (moderate) energy – still clean, but the swell is small and inconsistent. This pattern of clean but tiny surf continues through Monday the 3rd and Tuesday the 4th, with energy readings in the 25 to 77 range. Not enough to get excited about.

By Wednesday the 5th, the swell is gone – 0.7ft, 10-second period, but the wind is cross-onshore again. Thursday the 6th brings a 3ft, 4-second windswell from the north-northwest, energy only 34 (weak). Friday the 7th is glassy in the morning, with a 2ft, 5-second swell, still barely rideable. The afternoon sees a 3ft onshore bump, but it’s short period. Saturday the 8th is clean but tiny – 2ft, 5-second period, energy 33. Sunday the 9th and Monday the 10th are hammered by strong winds – 28 mph from the southwest – with swell up to 3ft, but it’s messy and blown out. Tuesday the 11th and Wednesday the 12th are the last days, with tiny 1ft to 2ft swell and light winds, but the energy is well under 100.

There’s one brief standout, and it’s a quiet one. The afternoon of Sunday, August 2nd: clean, cross-offshore wind, 4ft swell from the west-southwest at 9 seconds, with 178 (moderate) energy. For a reef break that’s fairly consistent and exposed to the west, that’s the best window in a very flat run. But with only 4ft, it’s still small, and the crowd is often there, so you’ll have company. Still, if you’re desperate, that’s your moment.

Otherwise, the whole 16-day outlook is a long, flat spell. For an exposed reef like Crab Island, it’s not uncommon to see runs like this. Forecasts can change, but right now, the only thing worth paddling for is that Sunday afternoon. Keep an eye on the charts, but I wouldn’t hold your breath.

Rusty.

Short Range Forecast

Light rain (total 8mm), mostly falling on Wed morning. Very mild (max 17°C on Tue morning, min 13°C on Wed morning). Winds decreasing (fresh winds from the SSW on Tue morning, light winds from the WSW by Tue night).

Days 4-6 Weather Summary

Light rain (total 7mm), mostly falling on Sun night. Very mild (max 19°C on Sun afternoon, min 14°C on Fri night). Winds decreasing (fresh winds from the W on Fri morning, calm by Sat night).

Tuesday
28
Wednesday
29
Thursday
30
Friday
31
Saturday
1
Sunday
2
Monday
3
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
0
0
0
0
0
0
1
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)
1.6
WSW
8
1.6
WSW
7
1.3
W
8
1.2
W
8
1
W
8
1.1
W
8
1.2
WNW
8
1
W
7
1.2
W
7
1.3
W
7
1.2
W
7
1
WNW
7
0.8
WNW
7
0.6
WNW
8
0.4
WNW
8
0.4
WSW
8
1.1
WSW
9
1
WSW
9
0.9
WSW
9
0.7
SW
9
0.5
SW
8
Wave Graph
Metric surfscale
Energy kJ
308
259
234
182
120
135
173
112
124
150
128
96
53
45
26
23
172
172
135
77
33
Wind (km/h)
30
SSW
30
SW
10
WSW
20
WSW
15
W
25
W
25
NW
25
WNW
25
WSW
30
WSW
30
W
30
WNW
25
W
20
W
0
WNW
15
SE
25
SE
10
SE
25
SE
25
SSE
15
WSW
Wind State
cross-on
cross-on
cross-on
on
on
on
cross-on
on
on
on
on
on
on
on
glassy
cross-off
cross-off
cross-off
cross-off
cross-off
cross-on
High Tide
5:41PM3.97m
6:08AM3.78m
6:17PM4.14m
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
Low Tide
11:28AM0.95m
11:55PM0.65m
12:02PM0.78m
00:28AM0.48m
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
cloud
cloud
light rain
light rain
rain showers
rain showers
part cloud
clear
clear
rain showers
part cloud
clear
clear
part cloud
cloud
cloud
cloud
mod rain
light rain
rain showers
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:47
5:48
5:50
5:52
5:54
5:54
5:56
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:38
9:37
9:36
9:34
9:31
9:30
9:29
 mm
3
3
1
1
1
6
4
2
3
Temp °C
17
17
16
16
15
15
14
14
15
15
15
15
15
15
15
14
19
17
19
19
17
Feels °C
13
13
14
14
11
11
8
9
10
10
9
10
12
12
14
10
17
15
16
18
16
  • 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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