Back Strands Surf Break

Lat Long: 54.45° N 8.49° W

Back Strands Surf Forecast and Surf Report

Issued: 6 am 04 Sep 2026 (local time)

Forecast update in  hr  min

Today's Back Strands sea temperature is
16.5°C
2.0° 

Back Strands surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Back Strands surf forecast from 4 Sep 2026:

  • Best quality surf: Saturday 5 Sep, 4PM (local time) - 4.5ft (1.4m), 10s period, WNW swell with cross-offshore winds.
  • Most powerful swell: Tuesday 8 Sep, 10AM (local time) - 13ft (4.0m), 12s period, W swell with 3,939 kJ wave energy.
  • Next surfable swell (1★+): Saturday 5 Sep, 4PM (local time) - 4.5ft (1.4m), 10s period with WNW 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 Saturday (Sep 05) at 4PM. The primary swell is predicted to be 1.4m and 10s 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 4.0m 12s and forecast to arrive on Tuesday (Sep 08) 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 1.1m 5s period and expected on Sunday (Sep 06) at 1PM.

Wave TypeTime (IST) & Date Wave Height & Period
Next good surf (1 star+) 4PM (Sat 5th Sep)4.5ft (1.4m) 10s
Best Surf 4PM (Sat 5th Sep)4.5ft (1.4m) 10s
Most Powerful10AM (Tue 8th Sep)13ft (4.0m) 12s

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’s on the cards for this stretch. We’ve got a solid 16-day window, but honestly, the first couple of weeks are a bit of a write-off. We’re looking at a long, grim stretch of poor conditions from the start right through to mid-September. The only real glimmer of hope, and it’s a beauty, is way out at the end of the forecast. So, strap in.

The first real chance of a wave comes on Friday the 18th of September. That’s the standout. Up until then, it’s a tough watch. From the 4th of September, we’ve got a massive gap of nearly two weeks with nothing worthwhile. There’s a lot of wind and heavy swell making a mess of things at Back Strands. The combined energy of all swells is massive early on, hitting 4217 (off the charts), but it’s all cross-onshore gale-force wind from the West at 28 mph, which just rips it apart. The water temperature is 62°, which is a touch warmer than normal for this time of year, but that’s not much comfort when you’re getting blown off the face.

We get a tiny bit of relief on the 5th of September, with a 5 ft wave from the WNW (10-second period) and a light cross-offshore breeze, but it’s a one-off blip in a sea of poor scores. The end of the first week and all of the second week are dominated by strong breezes, mostly cross or cross-on, with heights up to 13 ft but all blown out. This is a proper beach-and-reef setup, and honestly, with the wind and the size of the swell, it looks more interesting for kite surfing than paddle surfing for most of that run.

Now, hold on. Thursday the 17th of September, we get a little sign of life. A 5 ft groundswell from the West (10-second period) with a light cross-offshore breeze, but the conditions are still described as “very ordinary.” The real magic happens on Friday the 18th of September. That’s the day. We’ve got an 8 ft swell from the WNW (10-second period) in the morning, and the combined energy is a solid 1326, which is a proper push. The wind is a light offshore breeze, and by the afternoon it goes glassy, with a slight air. The forecast says “expect very good surf conditions.” That’s a standout. The swell direction is West-northwest, which aligns with the optimum for this break. The only thing to be aware of is that Back Strands is a reef break and can be inconsistent, so don’t expect a wave every minute. The crowds are a possibility here, as it’s known to get busy. This is a proper groundswell, long period, and a reef break like this will handle it beautifully. It will be clean, powerful, and the wait for sets will be worth it. It’s a bit over 8 ft, so this is strictly for the experts. The Saturday after that, the 19th, drops back to a 3 ft wave with clean, offshore conditions, but it’s back to ordinary.

So, the call is simple. The first two weeks are a hard pass. Mark your calendar for Friday the 18th of September. That’s the one.

Rusty.

Short Range Forecast

Light rain (total 4mm), mostly falling on Fri morning. Very mild (max 19°C on Sun morning, min 13°C on Fri night). Winds decreasing (strong winds from the W on Fri morning, light winds from the SSW by Sat afternoon).

Days 4-6 Weather Summary

Heavy rain (total 22mm), heaviest during Wed afternoon. Very mild (max 17°C on Wed night, min 12°C on Mon night). Winds decreasing (strong winds from the W on Tue morning, moderate winds from the SSW by Wed night).

Friday
4
Saturday
5
Sunday
6
Monday
7
Tuesday
8
Wednesday
9
Thursday
10
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
2
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
4
W
12
3
W
12
2.5
W
12
1.7
W
10
1.4
WNW
10
0.8
WNW
9
0.7
W
8
0.7
W
10
1.4
W
11
1.6
W
10
1.9
W
9
3
W
10
4
W
12
3.5
WNW
11
2.5
WNW
11
1.6
WNW
9
1.2
WNW
9
0.9
W
8
1.4
W
7
1.3
W
8
1.8
W
6
Wave Graph
Metric surfscale
Energy kJ
4217
3035
1805
644
378
106
68
98
467
474
593
1962
3939
3152
1447
433
213
104
212
202
255
Wind (km/h)
45
W
45
W
30
W
20
SW
10
SSW
20
SSE
40
SSE
40
SSW
25
WSW
25
SW
40
SW
35
W
45
W
40
W
35
W
25
SSW
35
S
30
WSW
35
W
35
W
30
WNW
Wind State
cross-on
cross-on
cross-on
cross
cross-off
off
cross-off
cross-off
cross-on
cross
cross
cross-on
cross-on
cross-on
cross-on
cross-off
cross-off
cross
cross-on
cross-on
cross-on
High Tide
11:18AM2.76m
11:53PM2.61m
12:40PM2.65m
1:30AM2.47m
2:18PM2.72m
3:09AM2.55m
3:39PM3.00m
4:20AM2.77m
4:39PM3.34m
5:13AM3.02m
5:27PM3.64m
5:57AM3.22m
6:09PM3.85m
Low Tide
5:22PM0.97m
5:58AM1.05m
7:02PM1.11m
7:40AM1.13m
8:53PM0.99m
9:13AM0.98m
10:09PM0.69m
10:16AM0.72m
11:03PM0.38m
11:05AM0.45m
11:47PM0.12m
11:47AM0.23m
00:25AM-0.05m
rain showers
clear
part cloud
part cloud
cloud
cloud
part cloud
rain showers
rain showers
part cloud
rain showers
rain showers
rain showers
rain showers
rain showers
cloud
mod rain
light rain
light rain
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:45
6:47
6:48
6:50
6:52
6:54
6:56
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:19
8:15
8:14
8:10
8:08
8:06
8:04
 mm
2
1
1
3
4
2
1
1
7
4
1
Temp °C
15
15
14
15
15
17
19
19
16
16
15
13
14
14
14
15
14
17
15
15
14
Feels °C
7
7
7
12
13
15
13
13
12
10
8
6
5
6
7
11
9
13
9
8
7
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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.

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