Surf Forecasts:
Crab Island surf forecast from 9 Sep 2026:
- Best quality surf: Sunday 13 Sep, 10AM (local time) - 2.5ft (0.8m), 11s period, WNW swell with glassy winds.
- Most powerful swell: Saturday 12 Sep, 7AM (local time) - 10ft (3.0m), 10s period, WSW swell with 1,470 kJ wave energy.
- Next surfable swell (1★+): Sunday 13 Sep, 10AM (local time) - 2.5ft (0.8m), 11s 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 (Sep 13) at 10AM. The primary swell is predicted to be 0.8m and 11s period with a secondary swell of 0.9m and 9s. 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 3.0m 10s and forecast to arrive on Saturday (Sep 12) at 7AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Thursday (Sep 10) at 4AM.
| Wave Type | Time (IST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Sun 13th Sep) | 2.5ft (0.8m) 11s |
| Best Surf | 10AM (Sun 13th Sep) | 2.5ft (0.8m) 11s |
| Most Powerful | 7AM (Sat 12th Sep) | 10ft (3.0m) 10s |
Table - best surf conditions forecast for Crab Island over the next 16 days.
The Lowdown
Alright, let’s be honest here – the next stretch is mostly a dud. There’s a lot of bumpy, cross-shore junk in the forecast, and you’re gonna have to pick your moments carefully.
The first decent chance is the morning of Sunday the 13th. Swell’s only 0.8m from the west-northwest, but the wind is glassy with a slight offshore feel. It’s a reef break at Crab Island (Clare), so even small swell can have some shape, but energy is weak (287), so it’ll be slow. Get out early because the afternoon goes cross-on and soft.
Then it’s back to the grind. Monday the 14th and Tuesday the 15th are lumpy and cross-onshore, with Tuesday morning having a little more size (1.7m) but nothing clean about it.
The next real look is Sunday the 20th. Cross-offshore wind from the southeast, clean conditions, and 1.6m of west swell with an 11-second period. Energy’s moderate (611) and it’s got more push than anything else in this window. Still not perfect, but it’s the best trade-off between size and clean surf. The afternoon stays clean-ish with 1.5m.
After that, it’s mostly downhill. The 21st and 22nd get messy again, and by the 23rd and 24th the swell’s almost gone and the wind’s screaming – that’s more kite weather than surf weather. Water temp is 17°, running about 2° warmer than average for this time of year.
So, circle Sunday the 13th if you want clean but tiny, and Sunday the 20th for a bit more size and better conditions. Otherwise, I’d stay patient. Things change fast around here.
Rusty.
Short Range ForecastModerate rain (total 11mm), heaviest on Fri night. Very mild (max 17°C on Thu afternoon, min 13°C on Wed night). Winds increasing (light winds from the W on Wed morning, strong winds from the SSW by Fri night). | Days 4-6 Weather SummaryModerate rain (total 10mm), heaviest on Mon night. Warm (max 20°C on Mon afternoon, min 14°C on Sat night). Winds increasing (calm on Sun morning, strong winds from the SW by Mon night). | ||||||||||||||||||||
Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | |||||||||||||||
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 | W 8 | W 7 | WSW 10 | WSW 10 | W 10 | W 8 | W 8 | WNW 13 | W 11 | W 10 | WNW 12 | WNW 11 | WSW 9 | WSW 9 | WSW 8 | WSW 8 | WSW 8 | W 9 | W 9 | W 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 220 | 129 | 106 | 741 | 804 | 470 | 279 | 271 | 632 | 1439 | 596 | 322 | 149 | 106 | 79 | 101 | 206 | 681 | 505 | 325 | 239 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-off | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | on | glassy | cross-on | cross-off | cross-on | cross-on | cross-on | on | on | cross-on |
High Tide | 4:51PM4.35m | 5:24AM4.26m | 5:34PM4.59m | 6:03AM4.44m | 6:13PM4.70m | 6:40AM4.52m | 6:51PM4.69m | 7:14AM4.49m | 7:27PM4.56m | 7:48AM4.37m | 8:02PM4.33m | 8:21AM4.16m | 8:38PM4.02m | ||||||||
Low Tide | 10:40AM0.61m | 11:07PM0.10m | 11:21AM0.33m | 11:46PM-0.11m | 11:59AM0.15m | 00:22AM-0.19m | 12:35PM0.08m | 00:57AM-0.12m | 1:10PM0.13m | 1:30AM0.06m | 1:44PM0.28m | 2:02AM0.35m | 2:18PM0.52m | 2:34AM0.69m | |||||||
 | |  |  |  |  | | |  | | | |  | | | | |  | |  | | |
 | 7:00 | — | — | 7:01 | — | — | 7:03 | — | — | 7:05 | — | — | 7:05 | — | — | 7:07 | — | — | 7:09 | — | — |
 | — | 8:07 | — | — | 8:06 | — | — | 8:04 | — | — | 8:00 | — | — | 7:59 | — | — | 7:55 | — | — | 7:53 | — |
mm | — | — | 1 | 1 | 1 | — | — | — | 8 | 2 | 1 | — | — | — | — | — | 2 | 5 | 2 | — | — |
Temp °C | 15 | 15 | 14 | 16 | 17 | 15 | 15 | 15 | 17 | 19 | 18 | 17 | 15 | 15 | 17 | 18 | 20 | 17 | 15 | 15 | 14 |
Feels °C | 11 | 10 | 9 | 13 | 12 | 11 | 12 | 11 | 13 | 17 | 14 | 14 | 15 | 14 | 14 | 14 | 14 | 11 | 11 | 11 | 9 |
Swell 1 Height (m) Direction Period (s) | W 9 | W 8 | W 7 | — | — | — | W 8 | W 8 | WNW 13 | W 11 | W 10 | WSW 9 | WSW 9 | WSW 9 | WSW 9 | WSW 8 | WNW 11 | — | W 9 | W 9 | W 9 |
| kJ | 220 | 129 | 106 | — | — | — | 279 | 271 | 632 | 1439 | 596 | 225 | 138 | 106 | 79 | 101 | 43 | — | 505 | 325 | 239 |
Swell 2 Height (m) Direction Period (s) | — | W 13 | W 12 | — | — | — | — | WNW 11 | — | — | WNW 12 | WNW 12 | WNW 11 | WNW 10 | WNW 10 | NW 9 | — | — | — | — | W 13 |
| kJ | — | 3 | 11 | — | — | — | — | 12 | — | — | 459 | 322 | 149 | 92 | 60 | 19 | — | — | — | — | 14 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | W 18 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | 6 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | SSE 3 | WSW 10 | WSW 10 | W 10 | — | — | SW 8 | — | — | — | — | — | — | — | WSW 8 | WSW 8 | — | — | — |
| kJ | — | — | 3 | 741 | 804 | 470 | — | — | 248 | — | — | — | — | — | — | — | 206 | 681 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 97 | 117 | 27 | 99 | 630 | 97 | 101 | 115 | 409 | 82 | 82 | 97 | 0 | 99 | 14 | 101 | 101 | 410 | 97 | 343 | 108 |
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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