Kilcummin Harbour Surf Break

Lat Long: 54.28° N 9.22° W

Kilcummin Harbour Surf Forecast and Surf Report

Issued: 6 am 18 Jul 2026 (local time)

Forecast update in  hr  min

Today's Kilcummin Harbour sea temperature is
17.3° C
2.6° 

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 18 Jul 2026:

  • Best quality surf: Friday 24 Jul, 4AM (local time) - 1.5ft (0.4m), 11s period, WNW swell with cross-offshore winds.
  • Most powerful swell: Saturday 25 Jul, 1PM (local time) - 8ft (2.5m), 10s period, WNW swell with 1,209 kJ wave energy.
  • Next surfable swell (1★+): Friday 24 Jul, 4AM (local time) - 1.5ft (0.4m), 11s period with WNW 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 Friday (Jul 24) at 4AM. The primary swell is predicted to be 0.4m and 11s period with a secondary swell of 0.7m and 6s. 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 2.5m 10s and forecast to arrive on Saturday (Jul 25) at 1PM. Winds are predicted to be cross-offshore at the time the swell arrives.

Wave TypeTime (IST) & Date Wave Height & Period
Next good surf (1 star+) 4AM (Fri 24th Jul)1.5ft (0.4m) 11s
Best Surf 4AM (Fri 24th Jul)1.5ft (0.4m) 11s
Most Powerful 1PM (Sat 25th Jul)8ft (2.5m) 10s

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


The Lowdown

Alright, let’s get into it. We’re looking at the local picture here, just the one spot, so we’ll work with what we’ve got.

First up, the water temp is sitting at 63°F with a big anomaly of 5°F warmer than normal. That’s a proper tropical feel for this time of year – you’ll be surfing in a shorty or maybe even boardies if you’re tough enough.

Right now, it’s a rough start. The first few days from Saturday the 18th right through to Thursday the 23rd are a write-off. The swell is small, the wind is onshore or cross-onshore, and the energy is weak (values between 44 and 144). The wave comment says it all: poor surf conditions. You’re better off staying home.

Then we get a flicker of hope on Friday the 24th. The swell picks up to 5ft from the WNW, with a period of 9 seconds and a combined energy of 370 (moderate). The wind is cross-offshore, keeping things clean. This is a marginal surf forecast, but it’s the first real sign of life. Still, the crowd factor might be an issue – it’s known to be busy sometimes.

Saturday the 25th is the standout. The morning shows 8ft from the WNW with a 9-second period and a big energy jump to 1057 (strong). The wind is cross-offshore again, so it’s clean. The swell is getting up there, though – over 8ft means this is for experienced surfers only. The break is a reef setup, and with the swell direction matching the optimum NNW, it should line up nicely. The afternoon holds at 8ft with a 10-second period. This is your best window, but it’s still only a marginal call, so don’t expect perfection.

Sunday the 26th gets messy. Morning has a fresh cross-shore wind with lumpy conditions – poor surf. Afternoon cleans up a bit with cross-offshore wind, but the energy is still strong (912). The 27th Monday morning has clean 8ft surf, but the wind is getting stronger (35 km/h) and the energy is 1033. Again, for experts only.

After that, the pattern gets choppy. Tuesday the 28th is cross-onshore and lumpy. Then Wednesday the 29th morning sees a solid 10ft from the WNW with a 9-second period and energy at 1219 (strong). The wind is cross-offshore, so it’s clean, but that’s serious size – only for the brave. The afternoon pushes energy to 1600.

Thursday the 30th has the biggest swell of the run: 12ft from the WNW with a 10-second period and energy at 2407 (very strong). But the wind is cross-onshore, making it choppy. The afternoon has the same size but onshore wind, which is no good.

The final days into the start of August show the swell dropping back to 5ft to 6ft, with onshore winds and fading energy (350-561). Poor conditions again.

Overall, the only real window for a decent, clean surf is Friday the 24th through to Monday the 27th, with Saturday the 25th being the pick of the bunch. But remember, this is a reef break that can be inconsistent, and the size means it’s not for everyone. The crowds could be a factor too.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 14°C on Sun afternoon, min 12°C on Sat afternoon). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Very mild (max 16°C on Thu afternoon, min 11°C on Tue night). Wind will be generally light.

Saturday
18
Sunday
19
Monday
20
Tuesday
21
Wednesday
22
Thursday
23
Friday
24
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
1
1
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.1
N
6
1.1
N
6
1.4
NNW
7
1
NNW
7
0.8
NNW
7
0.5
W
11
0.6
W
11
0.6
W
10
0.9
NNW
7
0.5
W
10
0.8
NNW
6
0.9
NNW
6
0.9
NNW
6
0.8
NNW
6
0.9
NNW
6
0.8
NNW
6
0.7
NNW
6
0.6
NW
6
1.5
WNW
9
2
W
8
2.3
WNW
9
Wave Graph
Metric surfscale
Energy kJ
80
77
163
102
57
61
82
78
77
55
51
56
58
48
68
44
32
20
370
522
851
Wind (km/h)
25
NNW
25
N
20
NNE
20
N
15
N
10
N
20
N
20
N
20
N
20
N
20
N
20
N
20
NNW
20
NNW
10
NW
10
NNW
15
NNW
10
WSW
20
W
25
W
20
SW
Wind State
on
on
on
on
on
on
on
on
on
on
on
on
on
cross-on
cross-on
cross-on
cross-on
cross-off
cross-off
cross
cross-off
High Tide
9:39PM3.65m
10:07AM2.88m
10:24PM3.39m
10:54AM2.73m
11:10PM3.07m
11:44AM2.59m
00:01AM2.76m
12:41PM2.49m
1:02AM2.51m
1:49PM2.44m
2:15AM2.38m
3:03PM2.48m
3:30AM2.37m
Low Tide
3:07PM0.29m
3:57AM0.29m
3:52PM0.48m
4:42AM0.50m
4:40PM0.72m
5:28AM0.73m
5:34PM0.95m
6:21AM0.94m
6:41PM1.14m
7:23AM1.08m
8:03PM1.23m
8:34AM1.13m
9:22PM1.18m
part cloud
part cloud
part cloud
clear
clear
part cloud
part cloud
part cloud
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
part cloud
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:24
5:26
5:28
5:30
5:31
5:33
5:33
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:59
9:58
9:55
9:54
9:52
9:52
9:50
 mm
1
Temp °C
13
13
13
13
14
14
13
12
12
12
13
12
15
15
14
15
16
15
18
18
15
Feels °C
9
9
10
10
11
12
10
9
9
8
10
9
12
12
13
13
13
13
14
14
11
  • 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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