Surf Forecasts:
Back Strands surf forecast from 1 Sep 2026:
- Best quality surf: Tuesday 1 Sep, 10PM (local time) - 3.5ft (1.0m), 8s period, W swell with cross-offshore winds.
- Most powerful swell: Tuesday 8 Sep, 1AM (local time) - 10ft (3.0m), 11s period, W swell with 2,319 kJ wave energy.
- Next surfable swell (1★+): Tuesday 1 Sep, 10PM (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 Tuesday (Sep 01) at 10PM. 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 3.0m 11s and forecast to arrive on Tuesday (Sep 08) at 1AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 5s period and expected on Monday (Sep 07) at 10PM.
| Wave Type | Time (IST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Tue 1st Sep) | 3.5ft (1.0m) 8s |
| Best Surf | 10PM (Tue 1st Sep) | 3.5ft (1.0m) 8s |
| Most Powerful | 1AM (Tue 8th Sep) | 10ft (3.0m) 11s |
Table - best surf conditions forecast for Back Strands over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what we’ve got for the next couple of weeks. It’s a bit of a mixed bag, and honestly, you’ll be waiting a while before anything really good lines up. We’ve got a long stretch of messy, poor-quality surf to get through first.
The first few days are a write-off. That 4ft to 5ft west swell on Tuesday and Thursday is completely wasted by strong cross-shore winds, making for a lumpy, choppy mess. The combined energy is moderate at best (212 to 430), but it’s not worth getting wet for. By Friday the 4th, the swell jumps up to a solid 8ft, with a long 11-second period, and the wave energy is strong (1555 to 1789), but that 28 mph cross-onshore wind from the west will turn it into a washing machine. That’s strictly for the kite surfers, not for paddle surfing.
We have a real lull from the 6th to the 13th. The swell drops right off, with heights mostly under 3ft and weak energy readings (often under 100). The wind does go offshore or clean a few times, but there’s just not enough swell to do anything with. It’s a frustrating week of nothing.
The one standout, and it’s over a week away, arrives on Monday the 14th of September at Back Strands. That morning, a clean 5ft west swell rolls in with a 9-second period, and a light offshore breeze from the ESE. The water temperature is 62°F, which is a touch warmer than normal for this time of year. The energy is moderate (401), and the conditions are clean. The real magic happens that afternoon, though. The swell jumps to 8ft with a solid 11-second period, and the combined energy surges to a very strong 1656. The wind shifts to a gentle cross-offshore from the SSE, leaving it clean. This is proper groundswell, and it’s going to be excellent for experienced surfers. That size is too much for beginners, and with a long period like that, the reef at Back Strands will be the place to be. The optimum swell direction is west, and this is coming from the west, so it’s a perfect match. Keep in mind, crowds are possible here.
The next day, Tuesday the 15th, still has some good energy. The morning offers a 7ft WNW swell with a 10-second period, clean conditions, and strong energy (850). It’s a very good follow-up day. The swell drops off again after that, and by Wednesday the 16th, we get a massive 8ft, 14-second period west swell, but the wind is light cross-onshore, and the conditions are described as marginal. It’s a lot of power (2237) that might not be clean enough to make the most of it.
So, the clear winner here is the afternoon of Monday the 14th at Back Strands. That’s your session. The morning of the 15th is a solid backup. Everything else before that is a long wait for a couple of hours of magic.
Rusty.
Short Range ForecastHeavy rain (total 22mm), heaviest during Thu afternoon. Very mild (max 18°C on Wed afternoon, min 13°C on Thu night). Winds increasing (light winds from the S on Tue night, strong winds from the WSW by Thu night). | Days 4-6 Weather SummaryLight rain (total 7mm), mostly falling on Fri morning. Very mild (max 19°C on Sun afternoon, min 12°C on Sat night). Winds decreasing (strong winds from the W on Fri morning, light winds from the S by Sat night). | ||||||||||||||||||||
Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | |||||||||||||||
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 8 | W 8 | W 8 | W 8 | W 7 | W 7 | W 7 | W 10 | W 10 | W 11 | W 11 | WNW 12 | WNW 10 | WNW 10 | WNW 9 | WNW 8 | W 9 | W 6 | W 8 | W 9 | W 11 |
Wave Graph | |||||||||||||||||||||
212 | 182 | 127 | 57 | 40 | 127 | 86 | 426 | 666 | 1555 | 1789 | 1455 | 521 | 295 | 113 | 39 | 39 | 108 | 234 | 247 | 2319 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-off | off | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross | cross-on | off | cross-off | cross-off | cross-off | on | cross-on | cross-off |
High Tide | 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 | 3:39PM3.00m | |||||||||
Low Tide | 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 | 9:13AM0.98m | 10:09PM0.69m | ||||||||
6:39 | — | — | 6:41 | — | — | 6:43 | — | — | 6:45 | — | — | 6:47 | — | — | 6:48 | — | — | 6:50 | — | — | |
— | 8:25 | — | — | 8:23 | — | — | 8:21 | — | — | 8:19 | — | — | 8:15 | — | — | 8:14 | — | — | 8:10 | — | |
mm | 1 | 3 | 1 | 3 | 1 | 1 | 1 | 7 | 4 | 1 | 1 | 1 | — | — | — | — | — | 4 | — | — | 5 |
Temp °C | 17 | 16 | 15 | 15 | 18 | 17 | 17 | 15 | 14 | 14 | 14 | 14 | 15 | 16 | 15 | 18 | 19 | 18 | 15 | 15 | 15 |
Feels °C | 13 | 14 | 14 | 14 | 16 | 13 | 12 | 11 | 11 | 6 | 6 | 8 | 11 | 13 | 13 | 13 | 15 | 16 | 14 | 15 | 9 |
Swell 1 Height (m) Direction Period (s) | — | W 8 | W 8 | W 8 | W 7 | NNW 11 | W 7 | NW 10 | N 10 | — | — | — | WNW 10 | WNW 10 | WNW 9 | WNW 8 | W 9 | W 9 | W 8 | W 9 | — |
— | 182 | 127 | 57 | 40 | 11 | 86 | 4 | 2 | — | — | — | 521 | 295 | 113 | 39 | 39 | 41 | 234 | 247 | — | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | NW 9 | — | NNW 11 | — | — | — | — | — | — | — | — | W 8 | NW 9 | — | W 13 | — | — |
— | — | — | — | 3 | — | 11 | — | — | — | — | — | — | — | — | 32 | 19 | — | 13 | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | W 8 | — | — | SE 2 | SW 3 | W 7 | — | W 10 | W 10 | W 11 | W 11 | WNW 12 | — | — | SSE 3 | S 4 | S 4 | W 6 | SW 4 | SSW 4 | W 11 |
212 | — | — | 1 | 2 | 127 | — | 426 | 666 | 1555 | 1789 | 1455 | — | — | 2 | 13 | 22 | 108 | 12 | 28 | 2319 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 53 | 27 | 0 | 7 | 53 | 53 | 89 | 53 | 145 | 292 | 319 | 265 | 53 | 53 | 0 | 61 | 102 | 53 | 19 | 15 | 27 |
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.











