Surf Forecasts:
Back Strands surf forecast from 31 Aug 2026:
- Best quality surf: Saturday 5 Sep, 4PM (local time) - 4.5ft (1.4m), 10s period, WNW swell with offshore winds.
- Most powerful swell: Friday 4 Sep, 10AM (local time) - 11ft (3.5m), 13s period, W swell with 4,112 kJ wave energy.
- Next surfable swell (1★+): Wednesday 2 Sep, 1AM (local time) - 3.5ft (1.0m), 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 Wednesday (Sep 02) at 1AM. The primary swell is predicted to be 1.0m 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 3.5m 13s and forecast to arrive on Friday (Sep 04) at 10AM. 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 4s period and expected on Tuesday (Sep 01) at 4AM.
| Wave Type | Time (IST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Wed 2nd Sep) | 3.5ft (1.0m) 8s |
| Best Surf | 4PM (Sat 5th Sep) | 4.5ft (1.4m) 10s |
| Most Powerful | 10AM (Fri 4th Sep) | 11ft (3.5m) 13s |
Table - best surf conditions forecast for Back Strands over the next 16 days.
The Lowdown
Alright, folks, Rusty here. Let's be straight with you – the next couple of weeks are looking pretty bleak for a proper paddle. We've got a lot of onshore junk and blown-out conditions on the cards for the main stretch.
We're starting off this Monday the 31st with a weak, short-period swell, maybe 5ft, but it’s coming in with a Westerly wind and rain. It’s messy, it’s lumpy, and honestly, not worth getting wet for. The wave energy is weak, and the water is 62°F, which is about two degrees warmer than usual for this time of year – a touch of tropical juice in the air, but it doesn’t help the surf. That poor form just carries on through Tuesday and Wednesday. The swell stays small and the wind keeps swinging around, cross-shore and cross-on, keeping everything chopped up.
Thursday stays marginal, but Friday the 4th is where it gets properly serious. A big Westerly groundswell hits, pushing 12ft with a 13-second period. The energy reading is huge – strong to very strong. But the wind is screaming from the WSW at 28 mph, making it an absolute washing machine. The break is going to be messy, blown-out and dangerous. If it's a beach setup, this is looking way more interesting for the kite surfers than for anyone on a paddleboard. Beginners should stay well clear of this one; at over 8ft, this is expert-only territory, and even then, it’s not going to be pretty.
The first real glimmer of hope comes on Saturday the 5th. The swell drops back to a cleaner 6ft from the WNW, and the wind finally relents, turning offshore for the morning. It’s not perfect, and the tide might be a bit funny, but it’s the cleanest we’ve seen. It’ll be a bit of a scramble for waves, but it’s something. Sunday and Monday next week just fade back into small, weak surf again.
Then we look to the following week, and there are a couple of interesting blips on the radar. The first is on Tuesday the 8th, with a clean 5ft from the WNW, but the winds are up and down. The more promising window is that Monday the 14th and Tuesday the 15th of September. There’s another solid groundswell building – we’re looking at 7ft to 12ft with a long 13-second period. The energy readings are strong. The winds are cross-offshore, which could make for some clean, big waves. But this is a long way out, so treat it as promising, not guaranteed. At that size, it’s for experienced surfers only, and that long period can make beach breaks close out – something like Back Strands, being a reef, might handle it better. Just be aware of the strong winds that could mess it up.
So, the short story? This week is a write-off. Saturday the 5th is your only real chance of a clean-ish wave before things get big and messy again. Keep an eye on that big swell around the 14th and 15th, but don’t book the day off work just yet. Forecasts change.
Rusty.
Short Range ForecastModerate rain (total 18mm), heaviest on Wed morning. Very mild (max 18°C on Wed afternoon, min 13°C on Mon night). Mainly fresh winds. | Days 4-6 Weather SummaryLight rain (total 9mm), mostly falling on Thu morning. Very mild (max 18°C on Sat night, min 13°C on Thu night). Winds decreasing (strong winds from the WSW on Fri morning, light winds from the SW by Fri night). | ||||||||||||||||||||
Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | |||||||||||||||
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) | WNW 7 | W 10 | W 6 | W 8 | W 8 | W 8 | W 8 | W 7 | W 7 | W 8 | W 8 | W 11 | W 13 | W 13 | WNW 12 | WNW 11 | WNW 10 | WNW 9 | WNW 8 | W 8 | W 8 |
Wave Graph | |||||||||||||||||||||
199 | 190 | 78 | 146 | 253 | 134 | 57 | 40 | 106 | 131 | 219 | 1124 | 4112 | 3513 | 1641 | 672 | 348 | 113 | 70 | 60 | 69 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-off | cross | cross-on | cross-off | off | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-off | off | cross-off | cross-off | cross-off | on |
High Tide | 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 | 2:18PM2.72m | 3:09AM2.55m | ||||||||
Low Tide | 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 | 7:40AM1.13m | 8:53PM0.99m | ||||||||
6:37 | — | — | 6:39 | — | — | 6:41 | — | — | 6:43 | — | — | 6:45 | — | — | 6:47 | — | — | 6:48 | — | — | |
— | 8:29 | — | — | 8:25 | — | — | 8:23 | — | — | 8:21 | — | — | 8:19 | — | — | 8:15 | — | — | 8:14 | — | |
mm | 1 | 1 | — | — | 4 | 2 | 8 | 1 | 1 | 2 | 1 | 3 | 1 | — | 1 | — | 1 | — | 1 | 1 | 2 |
Temp °C | 15 | 15 | 14 | 17 | 15 | 15 | 16 | 18 | 17 | 17 | 17 | 15 | 15 | 15 | 14 | 15 | 16 | 18 | 18 | 18 | 17 |
Feels °C | 10 | 12 | 10 | 12 | 11 | 13 | 15 | 15 | 14 | 14 | 12 | 9 | 6 | 7 | 8 | 12 | 12 | 16 | 15 | 16 | 16 |
Swell 1 Height (m) Direction Period (s) | W 11 | NW 7 | W 9 | W 8 | — | W 8 | W 8 | W 7 | NNW 11 | NW 11 | NW 10 | N 10 | — | — | — | WNW 11 | WNW 10 | WNW 9 | WNW 8 | W 8 | W 8 |
21 | 16 | 39 | 146 | — | 134 | 57 | 40 | 11 | 4 | 4 | 2 | — | — | — | 672 | 348 | 113 | 70 | 60 | 69 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | NW 8 | — | — | — | — | — | — | — | — | — | — | — | NW 8 | NW 8 |
— | — | — | — | — | — | — | 2 | — | — | — | — | — | — | — | — | — | — | — | 11 | 3 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | WNW 7 | W 10 | W 6 | SW 4 | W 8 | — | SE 2 | SW 3 | W 7 | W 8 | W 8 | W 11 | W 13 | W 13 | WNW 12 | — | — | S 3 | S 3 | S 3 | S 3 |
199 | 190 | 78 | 12 | 253 | — | 1 | 3 | 106 | 131 | 219 | 1124 | 4112 | 3513 | 1641 | — | — | 4 | 5 | 4 | 1 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 524 | 53 | 14 | 53 | 53 | 0 | 7 | 89 | 53 | 53 | 504 | 319 | 504 | 727 | 265 | 3 | 0 | 27 | 27 | 27 | 457 |
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.











