Surf Forecasts:
Back Strands surf forecast from 30 Aug 2026:
- Best quality surf: Tuesday 1 Sep, 10PM (local time) - 4ft (1.2m), 8s period, W swell with cross-offshore winds.
- Most powerful swell: Friday 4 Sep, 7AM (local time) - 16ft (5.0m), 13s period, W swell with 9,027 kJ wave energy.
- Next surfable swell (1★+): Tuesday 1 Sep, 10PM (local time) - 4ft (1.2m), 8s period with W swell.
Best Forecast Surf Conditions for Back Strands this week:
The surf forecast for Back Strands over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Sep 01) at 10PM. The primary swell is predicted to be 1.2m and 8s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Back Strands in the next 16 days are 5.0m 13s and forecast to arrive on Friday (Sep 04) 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 0.9m 4s period and expected on Sunday (Sep 06) at 10AM.
| Wave Type | Time (IST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Tue 1st Sep) | 4ft (1.2m) 8s |
| Best Surf | 10PM (Tue 1st Sep) | 4ft (1.2m) 8s |
| Most Powerful | 7AM (Fri 4th Sep) | 16ft (5.0m) 13s |
Table - best surf conditions forecast for Back Strands over the next 16 days.
The Lowdown
G'day, Rusty here. Let's have a look at what's on the table for Back Strands.
Right, the forecast is a bit of a mixed bag, to be honest. We're looking at a patchy run of swell, but the wind is going to be the real spoiler for most of the first week or so. The water temp is sitting at 62°, which is a touch warmer than normal for this time of year, so the shower's not too cold when you get in.
The real standout in the whole 16-day window is shaping up to be a late call. For the next few days, from Sunday the 30th through to early September, the wind is just nasty. We've got a small 1ft to 2ft west swell on Sunday, but the rain and funky wind ruin it. Then from Monday the 31st, we get a pulse of bigger swell, 6ft on Monday morning from the WNW, and it builds right up. But every time that swell gets some size, the wind is a total write-off – cross, cross-on, or just howling. There's a 6ft W swell on Monday the 7th of September, but it's cross-onshore again. The wave energy gets massive mid-week, with a 13ft west swell on Friday the 4th, and the combined energy is a whopping 5056, but it's being thrashed by a strong cross-onshore breeze. That's a messy, dangerous situation that's really only for experts, and even then, the quality is poor. For the kites, that setup might look more interesting than paddling.
Now, if you're looking for the best chance of a clean wave, you have to wait. The absolute highlight is on Saturday the 12th of September. We've got a small but clean 2ft west swell rolling in with a moderate 11-second period and glassy conditions in the afternoon. The combined energy is a modest 83, so it's weak energy, but it's clean and surfable. The morning of that day is also clean with a light offshore breeze. There's also a brief window on the Wednesday afternoon the 2nd of September where a 3ft swell lines up with clean cross-offshore winds, but it's small and the energy is weak at 73. The early morning of Saturday the 5th of September also has a 5ft WNW swell with light cross-on wind, making it only marginal for surf.
So, what's the call? That Saturday the 12th of September is the one to pencil in. It's not going to be epic, but it's the cleanest and most accessible surf in the whole run. Be aware that this spot can get crowded sometimes, so you might have some company. It's a fairly consistent reef break, so the wait for a clean wave should pay off. Everything else before that is a wait-and-see game with the wind, and the big swells are just too blown out.
This is Rusty, signing off.
Short Range ForecastHeavy rain (total 21mm), heaviest during Tue night. Very mild (max 17°C on Tue morning, min 13°C on Sun night). Mainly fresh winds. | Days 4-6 Weather SummaryModerate rain (total 12mm), heaviest on Wed afternoon. Very mild (max 18°C on Wed morning, min 13°C on Fri night). Winds decreasing (near gales from the SW on Thu night, light winds from the NW by Fri night). | ||||||||||||||||||||
Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | |||||||||||||||
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 10 | W 9 | WNW 4 | WNW 8 | WNW 8 | W 7 | W 8 | W 9 | W 8 | W 8 | W 8 | WSW 7 | W 11 | W 12 | W 12 | W 13 | WNW 12 | WNW 11 | WNW 10 | WNW 9 | WNW 8 |
Wave Graph | |||||||||||||||||||||
33 | 63 | 32 | 361 | 143 | 86 | 247 | 332 | 140 | 124 | 72 | 259 | 1126 | 1721 | 5064 | 5056 | 3376 | 1211 | 391 | 173 | 90 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | on | on | cross-on | cross-on | cross-off | cross | cross-on | off | cross | cross-off | cross | cross | cross | cross | cross-on | cross-on | on | cross-on | cross-off | cross-off |
High Tide | 8:00PM3.70m | 8:21AM3.29m | 8:33PM3.60m | 8:55AM3.23m | 9:10PM3.42m | 9:34AM3.12m | 9:51PM3.18m | 10:19AM2.95m | 10:42PM2.89m | 11:18AM2.76m | 11:53PM2.61m | 12:40PM2.65m | 1:30AM2.47m | ||||||||
Low Tide | 1:40PM0.18m | 2:10AM0.10m | 2:13PM0.22m | 2:42AM0.18m | 2:49PM0.33m | 3:17AM0.33m | 3:29PM0.50m | 3:57AM0.55m | 4:17PM0.73m | 4:47AM0.81m | 5:22PM0.97m | 5:58AM1.05m | 7:02PM1.11m | ||||||||
6:35 | — | — | 6:37 | — | — | 6:39 | — | — | 6:41 | — | — | 6:43 | — | — | 6:45 | — | — | 6:47 | — | — | |
— | 8:30 | — | — | 8:29 | — | — | 8:25 | — | — | 8:23 | — | — | 8:21 | — | — | 8:19 | — | — | 8:15 | — | |
mm | 2 | 3 | — | — | 1 | — | 1 | 1 | 13 | — | 1 | 2 | — | 2 | 2 | 2 | 2 | 1 | — | — | — |
Temp °C | 16 | 16 | 15 | 15 | 16 | 15 | 17 | 17 | 17 | 18 | 18 | 16 | 17 | 16 | 15 | 15 | 14 | 14 | 14 | 16 | 16 |
Feels °C | 15 | 16 | 14 | 9 | 11 | 11 | 13 | 13 | 15 | 14 | 13 | 11 | 12 | 9 | 6 | 7 | 6 | 7 | 12 | 12 | 11 |
Swell 1 Height (m) Direction Period (s) | W 10 | W 9 | W 11 | — | W 10 | W 9 | — | W 9 | W 8 | — | W 8 | NW 11 | NW 11 | — | — | W 13 | — | — | WNW 10 | WNW 9 | WNW 8 |
33 | 63 | 10 | — | 47 | 39 | — | 332 | 140 | — | 72 | 5 | 5 | — | — | 5056 | — | — | 391 | 173 | 90 | |
Swell 2 Height (m) Direction Period (s) | W 8 | NW 6 | — | — | — | NW 7 | — | — | — | — | N 8 | — | — | — | — | — | — | — | — | — | — |
5 | 1 | — | — | — | 2 | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | NW 6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | WNW 4 | WNW 8 | WNW 8 | W 7 | W 8 | — | SSE 2 | W 8 | SSW 3 | WSW 7 | W 11 | W 12 | W 12 | — | WNW 12 | WNW 11 | — | — | SSW 4 |
— | — | 32 | 361 | 143 | 86 | 247 | — | 1 | 124 | 4 | 259 | 1126 | 1721 | 5064 | — | 3376 | 1211 | — | — | 10 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 7 | 7 | 243 | 292 | 265 | 53 | 260 | 53 | 0 | 211 | 452 | 292 | 145 | 210 | 512 | 568 | 727 | 313 | 27 | 27 | 61 |
Best forecast wave conditions in Sligo | |||||||||||||||||||||
Best forecast wave conditions in Ireland | |||||||||||||||||||||
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Information about the Back Strands Surf forecast
The above surf forecast table for Back Strands provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Back Strands can be found by selecting the local surf guide option on the grey menu. Our Back Strands 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 (Back Strands) 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 Back Strands 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 Sligo? If you are looking for accommodation near Back Strands, camping, hotels and holiday cottages in Sligo, consider staying in Sligo which is 19 km (12 miles) away. Other places in and around Sligo where you can find information about places to rent, and car hire include Killybegs which is 21 km (13 miles) away, Enniskillen, Ballina and Letterkenny.











