Back Strands Surf Break

Lat Long: 54.45° N 8.49° W

Back Strands Surf Forecast and Surf Report

Issued: 12 am 16 Sep 2026 (local time)

Forecast update in  hr  min

Today's Back Strands sea temperature is
15.7°C
1.7° 

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 16 Sep 2026:

  • Best quality surf: Tuesday 22 Sep, 4PM (local time) - 6ft (1.8m), 16s period, W swell with glassy winds.
  • Most powerful swell: Thursday 17 Sep, 7PM (local time) - 13ft (4.0m), 14s period, WNW swell with 6,365 kJ wave energy.
  • Next surfable swell (1★+): Sunday 20 Sep, 1PM (local time) - 7ft (2.1m), 12s 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 Sunday (Sep 20) at 1PM. The primary swell is predicted to be 2.1m and 12s 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 14s and forecast to arrive on Thursday (Sep 17) at 7PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Wednesday (Sep 16) at 7PM.

Wave TypeTime (IST) & Date Wave Height & Period
Next good surf (1 star+) 1PM (Sun 20th Sep)7ft (2.1m) 12s
Best Surf 4PM (Tue 22nd Sep)6ft (1.8m) 16s
Most Powerful 7PM (Thu 17th Sep)13ft (4.0m) 14s

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 the outlook for Back Strands over the next couple of weeks.

Well, it’s gonna be a bit of a mixed bag here at Back Strands. We’ve got some decent pulses of swell on the cards, but the wind is gonna be a real pain for a lot of it. The first proper window of surfable conditions doesn't actually roll around until Sunday the 20th, so if you’re itching for a paddle before that, you might be out of luck.

The early part of the week is messy. Tuesday afternoon the 15th sees a 5ft swell from the west, but it’s gonna be blown out with a fresh 18.6 mph onshore wind. Wednesday the 16th is much the same, with a 5.6ft west swell but cross-onshore winds making it choppy. Thursday the 17th is a write-off. We’re looking at a big, raw 10ft to 13ft west-northwest swell but it’s coming in with near gale-force cross-onshore winds. That’s not surfable, that’s a survival mission. If you’re into kiting, that setup might be more your speed.

Friday the 18th is marginal at best. An 8.2ft to 7.5ft west-northwest swell is there but the wind is still too strong and onshore for good waves. Saturday the 19th? Same story. Clean conditions aren't really on the menu yet.

Alright, here’s where it gets interesting. Sunday morning the 20th is the first standout. We finally get a break. A gentle offshore breeze from the SSE will be grooming a 6.9ft west-northwest groundswell (12-second period) into clean lines. There’s some good push there. It’s a reef break, and with that longer period, the waves should wrap in with some proper shape. The water temp is sitting at a touch warmer than average for this time of year, around 60°, so it’s not too bad. You’ll have to watch for crowds though – this spot can get them sometimes.

Monday the 21st will clean up a bit more. Still some good 5ft to 4.6ft west swell with clean conditions and light breezes.

Now, the absolute best window of the whole run looks like Tuesday the 22nd. Tuesday morning is already glassy with a 3.9ft west swell. But Tuesday afternoon is where it’s at. The wind drops to dead calm, glassy conditions, and a 6ft west swell rolls in with a very long 15-second period. That’s a proper groundswell. It’s got plenty of grunt. For a reef, that’s going to deliver some nice, clean, powerful walls. This one is for experienced surfers, as the report suggests. If you can get out there, this is the session to aim for.

Wednesday the 23rd holds clean too, with a gentle offshore from the SE and a 5ft 12-second west swell. Still good.

After that, it starts to get sloppy again. Thursday the 24th brings back the onshore winds, and another big but messy swell. From Friday the 25th through the rest of the run, the swell drops back to small 2.6ft to 3.3ft and the wind turns onshore again, offering nothing but poor conditions.

So, in a nutshell: The first week is a write-off wind-wise. Standouts are definitely Sunday the 20th morning for the first clean run, and Tuesday the 22nd afternoon is the one to circle on your calendar for the best chance of a quality, glassy session. It’s a reef, so that long period groundswell should produce some gems. Keep an eye on the forecast, but that Tuesday window looks promising.

Short Range Forecast

Heavy rain (total 20mm), heaviest during Fri morning. Very mild (max 16°C on Fri afternoon, min 12°C on Fri morning). Winds increasing (moderate winds from the W on Wed morning, strong winds from the W by Thu morning).

Days 4-6 Weather Summary

Some drizzle, heaviest during Fri night. Warm (max 20°C on Mon afternoon, min 11°C on Sun morning). Winds decreasing (fresh winds from the WSW on Fri night, light winds from the S by Sun afternoon).

Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
Monday
21
Tuesday
22
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
0
0
2
0
0
0
0
0
2
3
3
2
2
2
3
4
4
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.7
W
11
1.5
W
10
2.1
W
9
3.5
W
11
4
WNW
13
3.5
WNW
14
2.5
WNW
13
2.3
W
12
2.3
W
11
2.3
W
10
2.5
W
11
2.5
WNW
12
2.2
WNW
12
2
WNW
12
1.6
W
12
1.3
WNW
11
1.1
W
10
1.3
W
10
1
W
17
1.8
W
16
2
W
14
Wave Graph
Metric surfscale
Energy kJ
657
434
676
2691
5369
4822
2323
1519
1212
1087
1657
1879
1230
1054
723
438
270
361
610
1569
1594
Wind (km/h)
20
W
30
SW
35
W
50
W
45
W
35
W
25
SSW
35
WSW
35
WSW
35
W
35
W
25
W
15
SW
10
S
15
S
10
S
10
S
10
SSE
10
SSE
0
NNE
10
E
Wind State
cross-on
cross
cross-on
cross-on
cross-on
cross-on
cross-off
cross
cross
cross-on
cross-on
cross-on
cross-off
cross-off
cross-off
cross-off
cross-off
off
cross-off
glassy
cross-off
High Tide
9:26AM3.07m
9:44PM2.87m
10:03AM2.85m
10:23PM2.55m
10:49AM2.61m
11:18PM2.28m
12:00PM2.41m
00:50AM2.11m
1:47PM2.37m
2:42AM2.15m
3:16PM2.54m
3:52AM2.34m
4:09PM2.80m
Low Tide
3:27PM0.65m
3:40AM0.79m
4:07PM0.93m
4:17AM1.07m
5:00PM1.22m
5:11AM1.31m
6:32PM1.42m
6:54AM1.45m
8:43PM1.39m
8:47AM1.35m
9:52PM1.17m
9:48AM1.13m
10:34PM0.91m
part cloud
cloud
rain showers
light rain
rain showers
rain showers
mod rain
light rain
light rain
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
part cloud
clear
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:07
7:09
7:11
7:11
7:13
7:16
7:18
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:49
7:45
7:44
7:40
7:38
7:36
7:34
 mm
5
2
1
1
8
3
1
Temp °C
14
15
15
13
14
14
14
16
16
14
14
14
13
16
17
18
20
19
17
18
17
Feels °C
8
9
9
3
5
7
9
11
10
7
7
9
10
15
17
19
20
19
17
19
17
  • 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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