Kilcummin Harbour Surf Break

Lat Long: 54.28° N 9.22° W

Kilcummin Harbour Surf Forecast and Surf Report

Issued: 6 pm 26 Aug 2026 (local time)

Forecast update in  hr  min

Today's Kilcummin Harbour sea temperature is
16.4°C
1.4° 

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


Kilcummin Harbour surf forecast from 26 Aug 2026:

  • Best quality surf: Sunday 30 Aug, 1PM (local time) - 2.5ft (0.8m), 10s period, WSW swell with cross-offshore winds.
  • Most powerful swell: Tuesday 1 Sep, 4AM (local time) - 11ft (3.5m), 9s period, WNW swell with 2,012 kJ wave energy.
  • Next surfable swell (1★+): Thursday 27 Aug, 10PM (local time) - 2ft (0.6m), 8s period with W swell.

Best Forecast Surf Conditions for Kilcummin Harbour this week:

The surf forecast for Kilcummin Harbour over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Aug 27) at 10PM. The primary swell is predicted to be 0.6m and 8s period with a secondary swell of 0.1m and 9s. Another secondary swell of 0.8m and 5s is also forecast. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Kilcummin Harbour in the next 16 days are 3.5m 9s and forecast to arrive on Tuesday (Sep 01) at 4AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 6s period and expected on Monday (Aug 31) at 1PM.

Wave TypeTime (IST) & Date Wave Height & Period
Next good surf (1 star+)10PM (Thu 27th Aug)2ft (0.6m) 8s
Best Surf 1PM (Sun 30th Aug)2.5ft (0.8m) 10s
Most Powerful 4AM (Tue 1st Sep)11ft (3.5m) 9s

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


The Lowdown

Alright folks, Rusty here. Let’s get into it.

To be straight with you, the next 16 days at Kilcummin Harbour are looking pretty grim. There’s a long stretch of poor surf conditions ahead, and for the first few days, it’s barely worth getting the wetsuit on. The combined swell energy is weak, with values staying under 100 (48) for the first few days, and the wind is all wrong. We’re looking at a gap of several days with no real recommendations.

Wednesday the 26th kicks off with a tiny 2 ft swell from the west and a cross-shore wind. The water is a touch warmer than normal at 62°, about 3° above average for this time of year, but with poor surf conditions, it doesn’t matter. Thursday and Friday are much the same story – small, weak swells and poor conditions.

Saturday the 30th shows a bit of a glimmer. On Sunday morning, we get a 2 ft swell from the WSW with a cross-offshore wind, and things clean up. The energy picks up to 132 (moderate), and the forecast says “surfable waves but very ordinary conditions.” It’s not a standout, but it’s the first real chance to get a wave.

Monday the 31st is where things get a little more interesting. The morning brings a 5 ft swell from the west, with a period of 10 seconds and a moderate cross-offshore wind. The combined energy jumps to 527 (strong), and the conditions are clean. This is the best of the first week, but it’s still only a marginal call. The afternoon drops off with a fresh breeze.

Then we hit a wall. From Tuesday the 1st of September through to the 9th, it’s a mix of poor surf, strong onshore winds, and messy conditions. On the 4th (Friday), we see a big 10 ft swell from the west, but with a fresh cross-offshore wind and a short period of 9 seconds, it’s lumpy and only for experts. The combined energy is a massive 1443 (very strong), but the quality is poor.

The only other half-decent window is on the 9th of September (Wednesday morning), with a 5 ft swell from the NW and a cross-offshore wind. The energy is 185 (moderate), but it’s still rated as poor.

Honestly, there’s no true standout here. If you’re desperate, the Monday morning of the 31st of August is your best bet at Kilcummin Harbour—a reef break that’s fairly consistent, so it might just hold the 5 ft west swell. The wind is clean, but the crowds are sometimes a problem. It’s a shallow reef, and with a 10-second period, it’s a groundswell. That means longer gaps between sets, but better shape. The swell direction is from the west, which is close to the optimum NNW direction, so it’ll wrap in okay.

Rusty.

Short Range Forecast

Light rain (total 9mm), mostly falling on Thu night. Warm (max 20°C on Thu afternoon, min 14°C on Fri night). Wind will be generally light.

Days 5-7 Weather Summary

Light rain (total 9mm), mostly falling on Sun morning. Very mild (max 16°C on Sat night, min 12°C on Mon night). Wind will be generally light.

Wed
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
Monday
31
Tuesday
1
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
1
1
0
0
1
1
2
1
0
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.5
W
7
0.9
WNW
10
0.9
WNW
9
0.7
WNW
9
0.9
NNE
5
0.7
N
5
0.8
N
6
0.9
N
6
0.9
NNW
7
0.9
NNW
7
1
NNW
7
1
N
8
0.8
W
9
1.1
NNW
7
1.2
W
10
1.7
W
10
3
W
8
2
NW
9
1.4
W
8
1
W
8
Wave Graph
Metric surfscale
Energy kJ
27
150
135
80
36
23
40
62
77
77
111
118
106
136
284
529
1121
649
257
118
Wind (km/h)
15
E
10
E
10
ENE
10
ENE
5
N
15
NNW
15
NNW
10
NNE
20
NNE
15
NNW
5
W
15
SE
10
E
15
WNW
20
SW
25
WSW
20
W
20
NW
15
NW
5
SSW
Wind State
cross
cross
cross-on
cross-on
on
cross-on
on
cross-on
cross-on
on
glassy
cross-off
cross
cross-on
cross-off
cross-off
cross
cross-on
cross-on
glassy
High Tide
5:53PM3.23m
6:10AM2.90m
6:24PM3.43m
6:42AM3.05m
6:55PM3.57m
7:13AM3.15m
7:25PM3.64m
7:45AM3.21m
7:56PM3.62m
8:17AM3.22m
8:30PM3.53m
8:52AM3.16m
9:06PM3.35m
Low Tide
00:07AM0.49m
12:03PM0.42m
00:37AM0.31m
12:34PM0.29m
1:06AM0.18m
1:05PM0.21m
1:36AM0.10m
1:36PM0.19m
2:06AM0.10m
2:10PM0.23m
2:39AM0.17m
2:46PM0.33m
3:14AM0.32m
rain showers
rain showers
part cloud
rain showers
rain showers
clear
part cloud
cloud
cloud
cloud
part cloud
light rain
part cloud
part cloud
light rain
light rain
rain showers
part cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:33
6:35
6:37
6:39
6:41
6:43
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:43
8:40
8:38
8:36
8:34
8:30
8:29
 mm
1
1
2
5
3
2
2
2
Temp °C
19
18
18
20
16
16
16
14
16
15
16
14
15
14
13
15
13
14
14
13
Feels °C
18
17
17
20
17
14
14
13
13
12
15
12
14
12
10
10
9
10
10
11
  • Map Icons:
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  • 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 Kilcummin Harbour Surf forecast

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

Kilcummin Harbour is 19 km (12 miles) from Ballina. If you plan a holiday in Mayo and Achill Island, look for hotels and other accommodation in Ballina. Ballina has rooms for a wide range of budgets as well as car hire and transport links.

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