Kilcummin Harbour Surf Break

Lat Long: 54.28° N 9.22° W

Issued: 12 pm 06 Jul 2026 (local time)

Forecast update in  hr  min

Today's Kilcummin Harbour sea temperature is
15.0° C

Slightly warmer than usual

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 6 Jul 2026:

  • Best quality surf: Friday 10 Jul, 4AM (local time) - 5ft (1.5m), 11s period, W swell with glassy winds.
  • Most powerful swell: Friday 10 Jul, 4AM (local time) - 5ft (1.5m), 11s period, W swell with 553 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 7 Jul, 10PM (local time) - 5ft (1.5m), 9s 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 Tuesday (Jul 07) at 10PM. The primary swell is predicted to be 1.5m and 9s period with a secondary swell of 0.2m 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 1.5m 11s and forecast to arrive on Friday (Jul 10) at 4AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Monday (Jul 13) at 1AM.

Wave TypeTime (IST) & Date Wave Height & Period
Next good surf (1 star+)10PM (Tue 7th Jul)5ft (1.5m) 9s
Best Surf 4AM (Fri 10th Jul)5ft (1.5m) 11s
Most Powerful 4AM (Fri 10th Jul)5ft (1.5m) 11s

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


Updates in  hr  min  s Forecast update imminent

G’day, I’m Rusty. Let’s take a look at what’s shaping up at Kilcummin Harbour – a reef break that’s exposed to the swell, fairly consistent, and likes the swell coming from the NNW.

Right now, there’s nothing going on. The first few days are a bust. Monday 6 July through to Tuesday morning has a solid 6ft swell from the west with a short 8-second period, but the wind is messy cross-off at 12-16 mph and the energy is only moderate (382-450). It’s marginal at best – not worth getting wet. That continues into Tuesday and Wednesday morning – the swell drops a little, wind lightens, but it’s still poor. By Wednesday 8 July afternoon, we’ve got 4ft at 10 seconds from the west, light cross-off breeze, energy at 305 – it’s clean but not firing. Just surfable.

Thursday 9 July stays clean with 4-5ft from the west, 9-second period, light wind, energy around 305 to 259. Getting better.

Then the standout: Friday 10 July morning. This is the one. The swell is 5ft from the west, period jumps to 11 seconds – that’s proper groundswell with energy. Combined energy hits a strong 513. And the wind? Glassy – NE at 3 mph, dead offshore for this reef. That means clean, peeling lines. Water temp is 59°, about normal for this time of year. This is the best session of the outlook – get on it early because the afternoon turns ugly with northerly wind.

Saturday 11 July and Sunday 12 July drop off fast. Swell shrinks to 3ft then 2ft, wind shifts onshore or cross-on at 16 mph, and energy drops to a weak 87-41. Not worth it. That flat, windy stretch continues right through to Saturday 19 July – waves under 3ft, mostly onshore, energy often below 100. A long dull gap of more than a week.

Now, a big pulse arrives Monday 20 July and Tuesday 21 July – the swell jumps to 10-12ft from the WNW with a 10-11 second period. Combined energy explodes to 1941-2725 – very strong. But the wind is cross-on or onshore at 6-12 mph, and it’s marginal. At this size, it’s experts only – beginners stay away. For a reef, that much energy will be heavy and challenging, especially with wind chop. It’s a serious session for the experienced, but not the clean, glassy perfection of that Friday 10 July morning.

That Friday 10 July morning is your best bet. Mark it. If you’re an expert and want power, the 20th-21st might be worth a look, but expect it to be rough.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 21°C on Tue morning, min 14°C on Mon night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 21°C on Thu afternoon, min 12°C on Fri night). Wind will be generally light.

Monday
6
Tuesday
7
Wednesday
8
Thursday
9
Friday
10
Saturday
11
Sunday
12
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
1
1
1
0
2
2
2
2
2
2
2
3
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)
1.7
W
8
1.7
W
8
1.7
W
8
1.7
W
9
1.6
W
9
1.5
W
9
1.4
W
9
1.3
W
10
1.3
W
9
1.4
W
9
1.3
W
9
0.8
WNW
12
1.5
W
11
1.4
W
10
1.2
W
10
1
WNW
9
1
WNW
8
0.9
WNW
8
0.7
WNW
8
0.5
WNW
7
0.4
WNW
7
Wave Graph
Metric surfscale
Energy kJ
382
392
401
445
413
367
334
301
274
304
258
186
505
392
267
169
151
94
50
29
16
Wind (km/h)
20
WSW
25
SW
20
SW
20
WSW
20
W
10
SW
10
SW
10
WSW
15
S
15
SSW
15
SW
5
ESE
5
NE
20
N
20
N
25
NNE
25
NNE
15
NNE
10
NE
20
NNE
5
ESE
Wind State
cross-off
cross-off
cross-off
cross-off
cross
cross-off
cross-off
cross-off
off
cross-off
cross-off
glassy
glassy
on
on
cross-on
on
cross-on
cross-on
on
glassy
High Tide
10:34AM2.59m
10:49PM3.06m
11:25AM2.55m
11:38PM2.95m
12:24PM2.53m
00:37AM2.85m
1:31PM2.57m
1:48AM2.81m
2:42PM2.70m
3:03AM2.84m
3:49PM2.90m
4:14AM2.94m
4:50PM3.16m
Low Tide
4:17PM0.79m
5:10AM0.71m
5:07PM0.92m
6:03AM0.74m
6:10PM1.01m
7:07AM0.76m
7:26PM1.03m
8:16AM0.73m
8:46PM0.92m
9:24AM0.64m
9:59PM0.71m
10:25AM0.50m
11:02PM0.46m
cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
part cloud
part cloud
cloud
cloud
cloud
part cloud
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:11
5:11
5:13
5:13
5:15
5:16
5:16
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
10:10
10:09
10:08
10:08
10:07
10:07
10:06
 mm
Temp °C
17
17
15
21
21
17
18
20
18
20
21
17
17
15
12
14
15
16
18
19
21
Feels °C
14
13
12
18
18
16
17
19
17
18
20
18
17
13
8
9
10
12
17
17
22
Swell 1
Height (m)
Direction
Period (s)
0.1
N
9
0.2
N
9
1.7
W
9
1.6
W
9
1.5
W
9
1.4
W
9
1.3
W
10
1.3
W
9
1.4
W
9
1.3
W
9
1
W
9
1.5
W
11
1.4
W
10
1.2
W
10
1
WNW
9
1
WNW
8
0.9
WNW
8
0.7
WNW
8
0.5
WNW
7
0.5
N
5
Energy kJ
2
7
445
413
367
334
301
274
304
258
150
505
392
267
169
151
94
50
29
12
Swell 2
Height (m)
Direction
Period (s)
0.2
N
8
0.2
N
8
0.2
N
8
0.2
N
8
0.2
N
7
0.2
N
7
0.1
N
7
0.1
N
6
0.8
WNW
12
0.2
N
10
0.2
N
10
0.2
WNW
11
0.1
N
8
0.5
N
5
0.5
N
5
0.4
WNW
7
Energy kJ
5
5
6
5
4
4
1
1
186
8
8
12
1
11
11
16
Swell 3
Height (m)
Direction
Period (s)
0.1
N
8
0.1
N
11
0.1
W
21
Energy kJ
1
2
9
Wind waves
Height (m)
Direction
Period (s)
1.7
W
8
1.7
W
8
1.7
W
8
1
N
4
0.8
NNE
4
1.1
NNE
5
1.1
NNE
5
0.8
NE
5
0.2
E
3
0.4
ESE
3
Energy kJ
382
392
401
40
25
56
61
26
1
3
Nearest Offshore or Glassy
Rating
(10 max)
2
2
2
1
2
2
2
2
2
2
2
2
3
2
2
1
1
1
1
1
1
Distance (km)
2
2
2
31
247
0
0
0
0
0
0
0
0
281
67
39
67
39
37
166
282
Best forecast wave conditions in Mayo and Achill Island
Rating
(10 max)
2
2
2
2
2
2
2
2
2
2
3
2
1
1
1
1
Best forecast wave conditions in Ireland
Rating
(10 max)
2
2
2
1
2
2
2
2
2
2
2
2
3
2
1
1
1
1
1
1
Header Global
Rating
(10 max)
8
7
5
5
9
8
9
9
5
6
6
5
8
6
5
5
5
9
9
7
4
  • 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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