Surf Forecasts:
Back Strands surf forecast from 14 Aug 2026:
- Best quality surf: Monday 17 Aug, 10AM (local time) - 2.5ft (0.8m), 8s period, W swell with cross-offshore winds.
- Most powerful swell: Tuesday 18 Aug, 4PM (local time) - 7ft (2.1m), 11s period, W swell with 1,104 kJ wave energy.
- Next surfable swell (1★+): Monday 17 Aug, 10AM (local time) - 2.5ft (0.8m), 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 Monday (Aug 17) at 10AM. The primary swell is predicted to be 0.8m 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 2.1m 11s and forecast to arrive on Tuesday (Aug 18) at 4PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 3s period and expected on Sunday (Aug 16) at 1PM.
| Wave Type | Time (IST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Mon 17th Aug) | 2.5ft (0.8m) 8s |
| Best Surf | 10AM (Mon 17th Aug) | 2.5ft (0.8m) 8s |
| Most Powerful | 4PM (Tue 18th Aug) | 7ft (2.1m) 11s |
Table - best surf conditions forecast for Back Strands over the next 16 days.
The Lowdown
Alright, let’s get this out there. I’ve been staring at the charts for Back Strands, and I’ll be honest with you, it’s a tough stretch. We’ve got a 16-day window, but the surf is mostly flat and the conditions are messy. Don’t get too excited yet, but there is a glimmer of something big way down the line.
For the first week, it’s pretty grim. We’re talking knee-to-waist high slop, if that. The energy is weak, in the 50s to 100s (56-104), which is just nothing. Wind is all over the place, and when it’s not cross, it’s onshore. The water temp is 62°, which is a touch warmer than normal for this time of year, so that’s one small win, but it’s not enough to make this stuff worth paddling out for. You’d be fighting for a crumbly closeout.
Things actually get a bit dangerous mid-week, around Tuesday the 18th. The swell jumps to 8ft at 10-11 seconds, with a strong 1375-1456 energy, but the wind is howling at 25 mph straight onshore. It’s going to be a complete mess. That’s a washing machine – more interesting for the kite surfers than for us. After that, it drops but stays poor and small for the rest of the week and into the next.
Now, for the second week, it’s mostly a write-off. There are days on end, from around Saturday the 23rd until the 27th, where there’s almost nothing rideable. We’re talking ankle-biters. If there’s no swell, there’s no surf.
But hold on. Look at the end of the window. Friday the 28th and Saturday the 29th. This is the one to keep an eye on. Friday morning shows a serious pulse of W swell at 13ft with a 14 second period. That’s a big, strong, very long-period groundswell. The energy readings are massive (5893). It’s going to be well overhead and powerful. The wind is light, but cross-on. This is a big, serious swell.
Back Strands (a fairly consistent reef break) can handle this kind of size, but the swell direction is optimal from the W and this is dead west. The main caveat is the period. These long-period swells, over 15 seconds, they can be tricky at beach breaks, but for a reef like this, it can be a dream. However, the wind will be up that afternoon, and it’s likely going to be a zoo out there given the crowds are “sometimes” around. This is an expert-only day. The forecast is far out, so treat it as promising but not a sure thing. Saturday morning the 29th still has some size, 8ft, with light winds, but it’s dropping.
So, the long and short of it: the next near fortnight is a dud. Save your energy. The one real standout, the one worth planning for, is that big Friday the 28th swell. But it’s a long way off, and it’s going to be heavy. Keep your eyes on it.
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Sun afternoon. Very mild (max 16°C on Fri afternoon, min 12°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 17mm), heaviest on Mon afternoon. Very mild (max 16°C on Mon afternoon, min 13°C on Wed night). Winds increasing (light winds from the S on Mon afternoon, strong winds from the W by Tue night). | |||||||||||||||||||
Fri 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | ||||||||||||||
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 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | W 7 | W 9 | W 8 | W 7 | W 7 | W 9 | W 11 | W 11 | WNW 10 | WNW 10 | WNW 9 | WNW 9 | WNW 9 | WNW 8 |
Wave Graph | ||||||||||||||||||||
49 | 65 | 83 | 83 | 52 | 37 | 46 | 102 | 84 | 40 | 243 | 606 | 1104 | 901 | 860 | 800 | 531 | 304 | 212 | 100 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross-on | cross-on | cross | cross-off | cross-off | cross | cross-off | cross-off | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | on | cross-on |
High Tide | 7:52PM4.02m | 8:16AM3.35m | 8:31PM3.91m | 8:54AM3.26m | 9:09PM3.67m | 9:31AM3.13m | 9:47PM3.35m | 10:09AM2.95m | 10:27PM3.01m | 10:51AM2.76m | 11:11PM2.67m | 11:41AM2.56m | 00:08AM2.39m | |||||||
Low Tide | 2:05AM-0.08m | 2:04PM0.06m | 2:43AM0.05m | 2:43PM0.20m | 3:18AM0.25m | 3:22PM0.41m | 3:54AM0.51m | 4:02PM0.67m | 4:31AM0.78m | 4:48PM0.95m | 5:14AM1.05m | 5:46PM1.21m | ||||||||
— | — | 6:09 | — | — | 6:09 | — | — | 6:11 | — | — | 6:13 | — | — | 6:16 | — | — | 6:18 | — | — | |
— | 9:07 | — | — | 9:06 | — | — | 9:04 | — | — | 9:01 | — | 8:59 | — | — | 8:57 | — | — | 8:54 | — | |
mm | — | — | — | — | — | — | 1 | — | 2 | 7 | — | — | — | 3 | 2 | 3 | 2 | — | — | — |
Temp °C | 16 | 14 | 14 | 14 | 14 | 14 | 16 | 15 | 14 | 16 | 16 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 14 | 13 |
Feels °C | 14 | 13 | 11 | 11 | 14 | 11 | 14 | 12 | 12 | 14 | 13 | 10 | 10 | 8 | 6 | 6 | 7 | 8 | 8 | 8 |
Swell 1 Height (m) Direction Period (s) | — | WNW 9 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | W 7 | W 9 | W 8 | W 7 | — | — | — | — | — | — | — | — | — | WNW 8 |
— | 8 | 83 | 83 | 52 | 37 | 46 | 102 | 84 | 40 | — | — | — | — | — | — | — | — | — | 100 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | NW 8 | NW 7 | — | N 7 | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | 9 | 2 | — | 1 | — | — | — | — | — | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | W 8 | WNW 8 | — | — | — | — | SSW 3 | W 4 | — | SSW 3 | W 7 | W 9 | W 11 | W 11 | WNW 10 | WNW 10 | WNW 9 | WNW 9 | WNW 9 | — |
49 | 65 | — | — | — | — | 2 | 13 | — | 1 | 243 | 606 | 1104 | 901 | 860 | 800 | 531 | 304 | 212 | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 276 | 278 | 276 | 53 | 753 | 27 | 7 | 22 | 27 | 0 | 80 | 501 | 265 | 534 | 494 | 1019 | 399 | 19 | 0 | 19 |
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.











