Kilcummin Harbour Surf Break

Lat Long: 54.28° N 9.22° W

Kilcummin Harbour Surf Forecast and Surf Report

Issued: 12 am 06 Aug 2026 (local time)

Forecast update in  hr  min

Today's Kilcummin Harbour sea temperature is
16.3° C
1.3° 

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 Aug 2026:

  • Best quality surf: Saturday 8 Aug, 7AM (local time) - 7ft (2.2m), 9s period, WNW swell with offshore winds.
  • Most powerful swell: Friday 7 Aug, 7PM (local time) - 8ft (2.5m), 10s period, WNW swell with 1,153 kJ wave energy.
  • Next surfable swell (1★+): Thursday 6 Aug, 7AM (local time) - 4.5ft (1.4m), 8s 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 Thursday (Aug 06) at 7AM. The primary swell is predicted to be 1.4m and 8s period with a secondary swell of 0.3m and 10s. Another secondary swell of 0.7m and 6s is also forecast. 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 Friday (Aug 07) at 7PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 5s period and expected on Friday (Aug 07) at 1AM.

Wave TypeTime (IST) & Date Wave Height & Period
Next good surf (1 star+) 7AM (Thu 6th Aug)4.5ft (1.4m) 8s
Best Surf 7AM (Sat 8th Aug)7ft (2.2m) 9s
Most Powerful 7PM (Fri 7th Aug)8ft (2.5m) 10s

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


The Lowdown

Alright folks, Rusty here. Let’s have a look at what’s cooking for Kilcummin Harbour. It’s a reef setup that needs a solid NNW swell to really fire, and we’ve got a mixed bag over the next couple of weeks.

The first few days are a bit of a write-off. Thursday the 6th and Friday the 7th are seeing poor surf conditions with cross-off winds and messy, low-energy swell. The swell energy is weak (182) on Thursday, and while it jumps to a moderate 452 on Friday morning, the conditions are still poor. You’d be fighting the wind more than the wave.

Things start to look up on Saturday the 8th. The morning brings a solid 7ft swell from the WNW with a period of 9 seconds and a clean offshore wind from the south. The combined energy is a strong 723, and the wave state is described as “moderate offshore and clean.” This is the standout of the window. The water temp is about average for the time of year, so no nasty surprises. Remember, this is a reef, so with a bit of size it’ll be offering up some proper walls. The crowds are just “sometimes” here, so you might get a few waves to yourself.

Sunday the 9th morning is still okay – 5ft from the WNW with light cross-off winds and clean conditions (438 energy) – but it’s a step down from Saturday. By the afternoon, a cross-shore wind kicks in and the quality drops. Monday the 10th morning brings a clean 4ft north swell with a long 11-second period and offshore winds, giving 458 energy and good conditions. That long period groundswell will wrap nicely into this reef.

After that, we hit a dry spell. From Tuesday the 11th through to Sunday the 16th, the surf is small and ordinary. Swell heights drop below 3ft, with mostly weak energy (under 200) and only occasional clean windows. It’s a long gap of about 5-6 days with no real recommendation. The 16th of August has a tiny 2ft north swell going glassy in the afternoon, but it’s barely surfable.

We get a late pulse around the 19th of August. Wednesday morning shows a 7ft WNW swell with a 10-second period and strong energy of 874, but the wind is cross-off and the forecast is only marginal due to tide or conditions. A bit too far out to get too excited, but keep an eye on it.

So, the best bet is Saturday morning, August 8th. That 7ft WNW swell with clean offshore winds is your ticket. It’s not so big that it’s only for experts, but given the reef and the size, it’s probably not a beginner’s wave either. Sunday the 9th and Monday the 10th mornings are your backup windows. Get in the water when you can.

Rusty.

Short Range Forecast

Light rain (total 4mm), mostly falling on Sat morning. Very mild (max 17°C on Fri morning, min 13°C on Wed night). Mainly fresh winds.

Days 4-6 Weather Summary

Mostly dry. Warm (max 24°C on Tue afternoon, min 13°C on Sat night). Wind will be generally light.

Thursday
6
Friday
7
Saturday
8
Sunday
9
Monday
10
Tuesday
11
Wednesday
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)
0
0
0
0
2
2
3
1
2
2
1
2
2
1
2
1
1
1
1
0
1
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
8
0.8
N
7
0.5
N
7
1.8
WNW
8
2.4
WNW
10
2.3
WNW
10
2.1
WNW
9
2
WNW
9
1.7
WNW
9
1.4
WNW
8
1.8
WNW
9
1.2
W
8
1.1
N
11
1.1
N
10
1
N
10
0.7
N
9
0.6
N
8
0.8
WSW
10
0.9
WSW
9
0.9
WSW
10
0.9
WSW
11
Wave Graph
Metric surfscale
Energy kJ
144
67
23
445
1066
901
721
655
456
284
477
187
269
239
186
76
50
109
124
129
161
Wind (km/h)
15
WSW
25
WSW
15
SSW
25
WSW
30
WSW
20
SSW
20
S
25
SW
10
SW
10
SW
20
W
5
SSW
10
SSE
5
N
5
SSE
15
SSE
15
S
15
S
20
SSW
20
SW
10
SSE
Wind State
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
off
cross-off
cross-off
cross-off
cross
cross-off
off
on
glassy
off
off
off
off
cross-off
off
High Tide
11:42AM2.63m
00:04AM2.74m
12:54PM2.57m
1:26AM2.61m
2:20PM2.64m
2:57AM2.62m
3:40PM2.86m
4:15AM2.77m
4:44PM3.18m
5:15AM2.96m
5:37PM3.50m
6:06AM3.13m
6:24PM3.77m
Low Tide
5:18AM0.72m
5:36PM0.95m
6:23AM0.88m
7:00PM1.06m
7:48AM0.94m
8:38PM0.99m
9:12AM0.86m
10:00PM0.75m
10:19AM0.66m
11:03PM0.45m
11:12AM0.43m
11:55PM0.18m
11:59AM0.22m
00:41AM-0.01m
cloud
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part cloud
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part cloud
part cloud
light rain
light rain
part cloud
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
part cloud
rain showers
clear
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:56
5:58
6:00
6:01
6:03
6:05
6:07
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:27
9:24
9:22
9:21
9:19
9:16
9:15
 mm
3
1
1
Temp °C
16
16
14
17
17
15
16
17
16
19
20
16
20
20
18
23
24
21
21
21
18
Feels °C
12
12
11
11
11
13
13
16
15
17
16
15
19
19
17
20
21
20
17
17
17
  • 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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