Kilcummin Harbour Surf Break

Lat Long: 54.28° N 9.22° W

Kilcummin Harbour Surf Forecast and Surf Report

Issued: 12 am 08 Sep 2026 (local time)

Forecast update in  hr  min

Today's Kilcummin Harbour sea temperature is
16.2°C
1.6° 

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 8 Sep 2026:

  • Best quality surf: Friday 11 Sep, 10PM (local time) - 10ft (3.0m), 14s period, WNW swell with offshore winds.
  • Most powerful swell: Friday 11 Sep, 10PM (local time) - 10ft (3.0m), 14s period, WNW swell with 3,706 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 9 Sep, 10AM (local time) - 5ft (1.6m), 9s period with N 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 Wednesday (Sep 09) at 10AM. The primary swell is predicted to be 1.6m and 9s period with a secondary swell of 1.5m and 8s. 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 3.0m 14s and forecast to arrive on Friday (Sep 11) at 10PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 4s period and expected on Saturday (Sep 12) at 1PM.

Wave TypeTime (IST) & Date Wave Height & Period
Next good surf (1 star+)10AM (Wed 9th Sep)5ft (1.6m) 9s
Best Surf10PM (Fri 11th Sep)10ft (3.0m) 14s
Most Powerful10PM (Fri 11th Sep)10ft (3.0m) 14s

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


The Lowdown

Righto, Rusty here. Let’s talk about what’s coming down the pipe at Kilcummin Harbour. Don’t bother looking for a wave for the first few days – it’s a write-off. Tuesday the 8th has fresh cross-onshore wind with a lumpy 13 to 13 ft mess of a swell pumping in from the WNW. The combined swell energy reading is a massive 3172, so there's plenty of ocean moving, but it's unsurfable. Wednesday morning the 9th brings a glimmer of hope with a drop to 5 ft from the north, clean conditions and a light offshore feel, but the energy drops to 753 and it’s a secondary option in the grand scheme. Thursday the 10th offers a clean 6 ft from the west with a moderate offshore breeze – not a standout, but a session saver for the die-hards.

The first real highlight comes on Friday afternoon the 11th. The swell bumps up to 7 ft from the WNW, the wind lays back to a cross-offshore breeze, and the energy hits a solid 1308. It’s clean, it’s got some push, and it’s the best of that first week stretch by a long shot. Saturday the 12th sees a jump to 10 ft from the WNW early, with a period stretching to 13 seconds – that’s a proper groundswell hitting the reef, but the wind is fresh and cross-off, keeping it from being perfect. The energy reading (3497) shows it’s got serious grunt, but at 10 ft, this is for experienced surfers only. Sunday the 13th is another good clean morning with 6 ft from the WNW, light offshore wind, and that long-period energy still pushing through at 750. It’s consistent, it’s clean, and it’s a solid go.

Now, the second week. There’s a rough patch from Monday the 14th through to the 16th with messy winds, lumpy conditions, and crook energy readings. Then Thursday the 17th morning shows up with 4 ft from the WNW and glassy conditions – rare, clean, but only a small wave for the logs. The real gold in the second week lands on Friday the 18th. The morning kicks in at 8 ft from the west, with a period of 11 seconds, and a gentle offshore wind leaving it clean. The energy reading is 1595 and the forecast calls it excellent for experienced surfers. This is the standout of the whole outlook – consistent, powerful, clean. Saturday the 19th is a strong follow-up with 7 ft from the WNW, moderate offshore wind, and that same 11-second period for clean shape. After that, it’s a mix of bigger, wind-affected days on the 21st (over 12 ft and a near-gale crosswind with energy at 5246 – that’s a kite day, not a paddle day) and some smaller, cleaner windows toward the 23rd.

Best of the best: Friday the 11th afternoon for a clean 7 ft WNW push, and Friday the 18th morning for a powerful, offshore-cleaned 8 ft west swell with excellent quality for experienced crew. Crowds at Kilcummin Harbour can pop up sometimes, so don’t expect a deserted lineup on those days.

Rusty.

Short Range Forecast

Light rain (total 5mm), mostly falling on Tue morning. Very mild (max 18°C on Thu morning, min 12°C on Tue night). Winds decreasing (fresh winds from the NW on Tue morning, light winds from the SW by Wed morning).

Days 4-6 Weather Summary

Light rain (total 2mm), mostly falling on Fri night. Very mild (max 18°C on Sat morning, min 13°C on Thu night). Winds decreasing (fresh winds from the SW on Sat morning, calm by Sat night).

Tuesday
8
Wednesday
9
Thursday
10
Friday
11
Saturday
12
Sunday
13
Monday
14
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
2
3
1
2
2
1
0
1
3
5
3
2
3
3
3
1
2
1
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
4
WNW
10
3.5
NW
10
2.5
NNW
10
1.6
N
9
1.4
WNW
8
1.3
W
7
1.8
W
9
1.8
WSW
10
1.7
W
10
2.2
WNW
9
2.2
WNW
10
3.5
WNW
13
3
WNW
13
2.5
WNW
13
2.5
WNW
12
1.7
WNW
11
1.4
NW
10
1.1
NW
9
0.6
N
13
1.6
W
11
1.7
W
10
Wave Graph
Metric surfscale
Energy kJ
3172
2629
1280
440
238
183
556
667
541
740
898
3642
3488
2021
1694
634
408
190
119
585
603
Wind (km/h)
35
WNW
35
NW
15
WNW
5
SW
20
SW
20
SSE
25
S
25
SW
25
WNW
20
WNW
20
WSW
20
S
30
SSW
30
WSW
10
WNW
10
SSE
15
SSW
20
SSW
25
SSW
25
SSW
15
SW
Wind State
cross-on
cross-on
cross
cross-off
cross-off
off
off
cross-off
cross
cross
cross-off
off
cross-off
cross-off
cross
off
off
cross-off
off
cross-off
cross-off
High Tide
4:17AM2.71m
4:35PM3.27m
5:09AM2.95m
5:23PM3.57m
5:53AM3.15m
6:06PM3.78m
6:32AM3.30m
6:44PM3.86m
7:09AM3.38m
7:21PM3.82m
7:43AM3.38m
7:56PM3.66m
8:16AM3.32m
8:31PM3.42m
Low Tide
10:12AM0.71m
11:00PM0.36m
11:01AM0.45m
11:44PM0.11m
11:44AM0.24m
00:22AM-0.05m
12:23PM0.09m
00:58AM-0.11m
1:00PM0.04m
1:31AM-0.07m
1:36PM0.07m
2:03AM0.06m
2:11PM0.19m
2:33AM0.27m
rain showers
clear
part cloud
cloud
cloud
light rain
rain showers
rain showers
part cloud
clear
part cloud
light rain
light rain
cloud
part cloud
part cloud
part cloud
cloud
part cloud
part cloud
heavy rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:56
6:56
6:58
7:01
7:03
7:05
7:05
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:12
8:08
8:07
8:04
8:01
7:59
7:57
 mm
2
1
1
1
1
1
39
Temp °C
14
14
13
15
16
13
18
17
14
15
16
15
18
16
15
16
18
17
20
20
17
Feels °C
6
7
8
10
12
9
14
13
10
11
12
10
12
11
14
14
15
15
16
17
16
  • 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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