Mullaghmore Surf Break

Lat Long: 54.46° N 8.45° W

Mullaghmore Surf Forecast and Surf Report

Issued: 6 am 25 Aug 2026 (local time)

Forecast update in  hr  min

Today's Mullaghmore sea temperature is
16.6°C
1.8° 

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


Mullaghmore surf forecast from 25 Aug 2026:

  • Most powerful swell: Tuesday 1 Sep, 10AM (local time) - 7.5ft (2.3m), 10s period, W swell with 1,055 kJ wave energy.

Best Forecast Surf Conditions for Mullaghmore this week:

The most powerful waves expected at Mullaghmore in the next 16 days are 2.3m 10s and forecast to arrive on Tuesday (Sep 01) at 10AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 5s period and expected on Tuesday (Sep 01) at 1AM.

Wave TypeTime (IST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful10AM (Tue 1st Sep)7.5ft (2.3m) 10s

Table - best surf conditions forecast for Mullaghmore over the next 16 days.


The Lowdown

Hey, it’s Rusty. Let’s get right into it.

The next couple of weeks are a real mixed bag. We’ve got a lot of poor conditions to sift through, and honestly, the start of the period is a bit of a bust. For the first few days, there’s just nothing doing. Swell is tiny, mostly under 2ft, and while it’s clean, the energy is weak, so it’s not worth getting wet for. We need to be patient.

Things stay flat and quiet through the rest of August. There’s a little bump on Sunday the 30th with some 2ft swell and a bit more energy, but it’s still poor. Monday afternoon the wind clocks onshore and gets fresh, so that’s a write-off. The first genuine sign of life comes on the morning of Tuesday the 1st of September. We finally see some proper swell push in at 8ft from the west with a period of 10 seconds. The energy jumps, finally something with a pulse. But, here’s the catch—the wind is cross-off and moderate, which is good, but the guidance only rates it as marginal, mostly due to questionable tide. Still, that’s the best raw size we’ve seen all period. It’s a peaky afternoon, but the wind swings cross-on and fresh, so the morning window is the one to watch. That’s a solid, albeit brief, shot at some real waves.

After that, it gets messy again. The 2nd and 3rd see a bit more size, 5ft to 5ft, but the winds are either strong cross-shore or strong onshore, making things lumpy and choppy. The energy is moderate, but the quality just isn’t there. We get a bit of a breather on the 6th with lighter winds and chest-high waves, but it’s still not clean.

Then, the real standout appears. On Monday the 7th of September, we’ve got the biggest swell of the window. The morning shows 8ft at 8 seconds, and the afternoon jumps to 8ft from the WNW with a period of 9 seconds and a massive energy reading. That’s strong, very strong energy. However, the wind is onshore (NNW), so it’s going to be pretty messy. This one is for the experts only; at that size, beginners should stay well clear. It’s a powerful, chunky swell, but the onshore wind will chop it up. The saving grace is in the following morning, Tuesday the 8th. The swell drops back to a more manageable 3ft, but the wind goes offshore from the SE. That will be clean and crisp, but with only moderate energy, it’s not the same beast.

For the rest of the second week, things settle down. Wednesday the 9th brings a 3ft to 3ft swell with a long period of 12 seconds. That’s a clean, groundswell pulse, and the wind is light and cross-off. Energy is moderate, and it looks like a proper little clean-up day.

So, the best bets are the morning of September 1st for a big, powerful session, and the morning of September 8th for the cleanest conditions of the fortnight. The 1st is bigger, but the 8th will be prettier. The 7th is for the brave, and it’s just for experts.

The water is sitting at about 62°F, which is a touch warmer than usual for this time of year, so it’s not too bad on the skin.

Alright, that’s the look. Keep your eyes on the calendar and your patience up.

Rusty.

Short Range Forecast

Moderate rain (total 16mm), heaviest on Tue night. Very mild (max 19°C on Tue afternoon, min 14°C on Tue night). Wind will be generally light.

Days 4-6 Weather Summary

Moderate rain (total 11mm), heaviest on Sun afternoon. Very mild (max 16°C on Fri morning, min 12°C on Sat night). Wind will be generally light.

Tuesday
25
Wednesday
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
Monday
31
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
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)
0.8
W
10
0.6
W
9
0.4
W
8
0.3
W
8
0.3
W
7
0.6
W
10
0.6
W
9
0.5
W
9
0.4
WNW
8
0.4
NW
6
0.4
NW
5
0.3
NW
6
0.3
NW
6
0.4
NW
6
0.5
W
9
0.5
NW
9
0.5
NW
9
0.4
NW
10
0.5
W
10
0.9
W
9
1.1
W
9
Wave Graph
Metric surfscale
Energy kJ
118
56
21
10
10
67
60
40
22
11
10
5
6
10
43
42
41
34
48
130
181
Wind (km/h)
20
ESE
15
ESE
15
ENE
20
E
15
ENE
10
ENE
10
ENE
5
NNW
5
ENE
10
NW
15
WNW
0
WNW
5
NNW
10
NW
5
WNW
10
E
15
NE
25
NW
15
SW
35
W
20
WSW
Wind State
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
on
cross-off
on
on
glassy
glassy
on
cross-on
cross-off
cross-off
on
cross
cross-on
cross-on
High Tide
5:23PM3.06m
5:41AM2.80m
5:57PM3.30m
6:13AM2.97m
6:28PM3.50m
6:45AM3.12m
6:58PM3.64m
7:16AM3.23m
7:29PM3.71m
7:48AM3.29m
8:00PM3.70m
8:21AM3.29m
8:33PM3.60m
Low Tide
11:00AM0.83m
11:37PM0.71m
11:35AM0.61m
00:09AM0.50m
12:06PM0.43m
00:40AM0.32m
12:37PM0.29m
1:09AM0.18m
1:08PM0.20m
1:39AM0.11m
1:40PM0.18m
2:10AM0.10m
2:13PM0.22m
2:42AM0.18m
cloud
light rain
mod rain
light rain
light rain
part cloud
part cloud
part cloud
rain showers
part cloud
part cloud
light rain
light rain
part cloud
clear
light rain
light rain
rain showers
rain showers
rain showers
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:26
6:28
6:30
6:31
6:33
6:35
6:37
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:43
8:40
8:37
8:36
8:32
8:30
8:29
 mm
1
9
1
1
4
2
2
1
4
2
1
2
3
Temp °C
18
19
15
16
16
16
18
19
17
16
16
15
15
15
14
13
13
12
14
15
13
Feels °C
15
15
13
14
15
15
18
20
17
15
14
14
14
13
12
11
10
7
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 Mullaghmore Surf forecast

The above surf forecast table for Mullaghmore provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Mullaghmore can be found by selecting the local surf guide option on the grey menu. Our Mullaghmore 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 (Mullaghmore) 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 Mullaghmore 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.

Mullaghmore is 20 km (12 miles) from Killybegs. If you plan a holiday in Sligo, look for hotels and other accommodation in Killybegs. Killybegs has rooms for a wide range of budgets as well as car hire and transport links.

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