Kilcummin Harbour Surf Break

Lat Long: 54.28° N 9.22° W

Kilcummin Harbour Surf Forecast and Surf Report

Issued: 12 am 26 Aug 2026 (local time)

Forecast update in  hr  min

Today's Kilcummin Harbour sea temperature is
16.5°C
1.5° 

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: Tuesday 1 Sep, 1AM (local time) - 7ft (2.1m), 8s period, W swell with offshore winds.
  • Most powerful swell: Tuesday 1 Sep, 4AM (local time) - 7ft (2.1m), 8s period, W swell with 617 kJ wave energy.
  • Next surfable swell (1★+): Sunday 30 Aug, 1AM (local time) - 4.5ft (1.4m), 7s period with NNW 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 Sunday (Aug 30) at 1AM. The primary swell is predicted to be 1.4m and 7s period with a secondary swell of 0.7m and 11s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Kilcummin Harbour in the next 16 days are 2.1m 8s and forecast to arrive on Tuesday (Sep 01) at 4AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 5s period and expected on Monday (Aug 31) at 7AM.

Wave TypeTime (IST) & Date Wave Height & Period
Next good surf (1 star+) 1AM (Sun 30th Aug)4.5ft (1.4m) 7s
Best Surf 1AM (Tue 1st Sep)7ft (2.1m) 8s
Most Powerful 4AM (Tue 1st Sep)7ft (2.1m) 8s

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


The Lowdown

Alright, let's break down the surf around Kilcummin Harbour. The first few days, from Wednesday the 26th through Saturday the 29th of August, are pretty much a total loss. We're talking small, weak, and messy swell with no decent wind. The wave energy is pitiful, barely registering. Don't even think about paddling out.

Finally, on Sunday the 30th of August, we get a window. The morning is glassy, with a light WSW breeze, and a clean 1.3m swell from the NNW. The period is 8 seconds, and the combined energy is a moderate 292. It's a small, clean wave, perfect for a longboard or a funboard. The water temp is about what you'd expect for this time of year.

The next real standout, and it's a big one, is Thursday the 3rd of September. The morning brings a solid 3.0m swell from the WSW with a 10-second period. The combined energy is a massive 1727 – that's strong. The wind is clean offshore from the SSW. This is a powerful, expert-only wave. The afternoon sees it drop to 1.9m, still clean.

After that, we get a few days of big, choppy, wind-affected swell. Then, on Sunday the 6th of September, we get a clean morning with 0.8m swell from the west and a 9-second period, with a moderate offshore wind. The energy is 211 (moderate). A nice, clean, smaller option.

Then comes a monster. Monday the 7th of September morning is showing a massive 4.5m swell from the NW with a 10-second period. The combined energy hits 4132 – that's very strong. The wind is a strong cross-offshore, but it's blowing a near-gale at 30 mph. That's not a surf session; that's a survival situation. The setup looks more interesting for kite surfing than paddle surfing. The afternoon is a bit smaller at 4.0m with an 11-second period, but still a gale.

The final nice spot is Wednesday the 9th of September. A clean 1.6m from the west with an 8-second period, and a gentle offshore wind from the south. Energy is 441 (moderate). A solid, clean, everyday wave.

So, the best clean session is Sunday the 30th of August. The big, expert-only standout is the morning of Thursday the 3rd of September. And keep an eye on Wednesday the 9th of September for a clean, solid wave.

Rusty.

Short Range Forecast

Light rain (total 7mm), mostly falling on Tue night. Very mild (max 17°C on Wed morning, min 15°C on Tue night). Wind will be generally light.

Days 4-6 Weather Summary

Heavy rain (total 21mm), heaviest during Fri night. Very mild (max 17°C on Sun afternoon, min 12°C on Sat night). Mainly fresh winds.

Wednesday
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
Monday
31
Tuesday
1
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
2
2
0
0
0
0
3
1
1
1
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
8
0.5
W
7
0.9
WNW
10
0.9
WNW
9
0.7
WNW
9
0.5
W
8
0.4
WNW
7
0.4
WNW
7
0.6
N
5
1
N
6
1
N
6
1.4
NNW
7
1.3
NNW
8
1.3
NNW
8
1
N
8
0.9
W
10
1.4
W
9
2.1
W
8
1.6
W
8
1.5
W
8
1.2
W
8
Wave Graph
Metric surfscale
Energy kJ
29
27
150
135
80
33
18
18
19
62
69
180
204
186
120
158
327
583
351
311
196
Wind (km/h)
15
E
10
E
10
ENE
10
NE
10
N
10
NW
10
NNW
15
N
10
NNE
20
NE
30
NNW
15
WSW
5
WSW
15
WNW
25
WNW
30
W
25
W
20
SSW
20
SSW
30
SSW
20
WSW
Wind State
cross
cross
cross-on
cross-on
on
cross-on
on
on
cross-on
cross-on
cross-on
cross-off
glassy
cross
cross
cross
cross
off
cross-off
off
cross-off
High Tide
5:37AM2.73m
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
11:31AM0.60m
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
part cloud
part cloud
part cloud
part cloud
clear
rain showers
rain showers
cloud
mod rain
mod rain
light rain
part cloud
clear
clear
rain showers
rain showers
part cloud
light rain
cloud
light rain
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:31
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
7
7
5
1
1
1
1
1
Temp °C
17
17
17
17
17
16
16
16
15
14
14
13
16
17
14
15
16
16
18
18
17
Feels °C
15
16
17
16
16
16
15
15
15
11
9
10
14
14
8
9
11
13
13
14
15
  • 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 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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