Kilcummin Harbour Surf Break

Lat Long: 54.28° N 9.22° W

Kilcummin Harbour Surf Forecast and Surf Report

Issued: 6 pm 06 Sep 2026 (local time)

Forecast update in  hr  min

Today's Kilcummin Harbour sea temperature is
16.3°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 7 Sep 2026:

  • Best quality surf: Saturday 12 Sep, 7AM (local time) - 10ft (3.0m), 14s period, WNW swell with offshore winds.
  • Most powerful swell: Tuesday 8 Sep, 7PM (local time) - 15ft (4.5m), 11s period, NW swell with 4,922 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 9 Sep, 10AM (local time) - 6.5ft (2.0m), 9s 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 Wednesday (Sep 09) at 10AM. The primary swell is predicted to be 2.0m 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 4.5m 11s and forecast to arrive on Tuesday (Sep 08) at 7PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 4s period and expected on Thursday (Sep 10) at 4AM.

Wave TypeTime (IST) & Date Wave Height & Period
Next good surf (1 star+)10AM (Wed 9th Sep)6.5ft (2.0m) 9s
Best Surf 7AM (Sat 12th Sep)10ft (3.0m) 14s
Most Powerful 7PM (Tue 8th Sep)15ft (4.5m) 11s

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


The Lowdown

Righto, Rusty here. Let’s have a look at what’s on offer for Kilcummin Harbour over the next couple of weeks.

First up, the water’s sitting at 61° – a touch warmer than normal for this time of year, so you might get away with a thinner wetsuit.

The forecast kicks off with a bit of swell but it’s not really game on. Sunday the 6th has some 7ft swell from the WSW, but the wind is a cross-off at 19 mph, and the combined energy is moderate (899). The surf is there, but the report says it’s marginal, so don’t expect any standouts. Monday the 7th sees a bump to 8ft from the W, still cross-off wind, and energy climbs to 1403, but again, it’s labelled marginal. Not the cleanest or most reliable start.

Tuesday the 8th is a write-off. Swell jumps to 13ft and 15ft, but the wind cranks up to 25-28 mph from the WNW, creating strong cross-shore and cross-onshore mess. The energy is huge (3682 and 4387), but the surf quality is poor. This is more of a kite-surfing session than a paddling one.

Now, Wednesday morning the 9th is the first real glimmer. Swell drops to 7ft from the NNW, period of 9 seconds, and the wind is a light cross-off at just 6 mph. The energy is moderate (986), and the report says “expect very good surf conditions.” The wind is light, clean, and the swell is manageable. This is the best on offer in the first week. It’s a reef break, so it can handle longer period swells, but the 9-second period is solid. It’s fairly consistent, and crowds are only sometimes, so you might have it reasonably quiet.

Thursday the 10th and Friday the 11th drop back into marginal territory – 6ft to 6ft swell, moderate winds, and energy in the 500-600 range. Not terrible, but nothing to get excited about.

Saturday the 12th sees a big pulse of 12ft from the WNW with a very long period of 14 seconds, and energy rockets to 4124. But the wind is cross-shore at 19 mph, making it lumpy. The afternoon shifts to cross-on and choppy. This is a big, powerful groundswell, but the wind spoils it for this exposed reef.

Sunday the 13th morning is a solid option – 7ft from the WNW, 12-second period, light cross-off wind from the SSW at 9 mph. Energy is moderate (1224), and the report gives it a decent nod. Clean, good shape potential, and the reef will handle that long period well.

Monday the 14th morning has 12ft from the W, but the wind is fresh cross-off at 19 mph. The afternoon, however, is a standout: 15ft from the WNW, 12-second period, energy at 5827, and the report says wind and tide are favourable, but the swell is predicted to be too big for this break. That’s expert-only territory – over 8ft, and it’s a reef, so it’s going to be heavy and powerful. If you’re a seasoned charger, this is the one to circle.

The rest of the week after that is a mix of too big or too windy. Wednesday the 16th again has 15ft with clean offshore wind, but again, it’s too big for the break. Thursday the 17th morning is excellent for experienced surfers – 10ft from the NW, 10-second period, offshore wind at 16 mph, energy 1819. Clean, offshore, and powerful. The afternoon drops to 7ft with fresh offshore wind, still clean but less size.

From Friday the 18th onward, the swell drops back into the 7ft to 12ft range, but the wind stays cross-off and fresh. The energy is moderate to strong (769 to 2204), but the surf is labelled marginal. The last few days of the forecast (20th and 21st) see the swell fading to 4ft to 7ft, with energy dropping to 316-1112, and the wind is still cross-off. Nothing to write home about.

Overall, the standout windows are Wednesday morning the 9th for a clean, fun session, and Monday the 14th afternoon if you’re an expert looking for a serious challenge. The 17th Thursday morning is also a good call for experienced surfers. There are long gaps of marginal surf in between, but the area does have some consistent pulses.

Rusty.

Short Range Forecast

Light rain (total 7mm), mostly falling on Sun afternoon. Very mild (max 18°C on Sun afternoon, min 12°C on Mon night). Winds decreasing (strong winds from the WNW on Tue morning, light winds from the WSW by Wed morning).

Days 5-7 Weather Summary

Moderate rain (total 17mm), heaviest on Fri night. Very mild (max 18°C on Thu morning, min 12°C on Wed night). Mainly fresh winds.

Sun
6
Monday
7
Tuesday
8
Wednesday
9
Thursday
10
Friday
11
Saturday
12
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
2
2
2
0
0
0
3
2
1
2
1
1
1
1
4
2
0
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.1
WSW
10
1.8
W
10
2.5
W
10
2.5
W
10
3
W
10
4
WNW
10
4.5
NW
11
3.5
NW
10
2
NNW
9
1.3
N
9
1.2
W
7
1.7
W
11
1.7
WSW
10
2
W
10
1.9
WNW
8
1.7
WNW
8
2.5
WNW
13
3.5
WNW
14
3.5
WNW
14
3
WNW
13
Wave Graph
Metric surfscale
Energy kJ
884
693
1401
1375
2098
3682
4387
2795
655
263
155
657
586
745
534
422
2310
4124
3949
2519
Wind (km/h)
30
SW
25
SW
25
SW
30
WSW
30
W
40
WNW
45
WNW
30
NW
10
WSW
20
SW
30
S
20
SSW
30
WSW
20
W
15
W
20
SW
20
SSE
30
WNW
20
NW
15
W
Wind State
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross-on
cross-on
cross-off
cross-off
off
cross-off
cross-off
cross
cross
cross-off
off
cross
cross-on
cross
High Tide
3:05AM2.49m
3:35PM2.94m
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
Low Tide
8:50PM0.96m
9:09AM0.97m
10:06PM0.67m
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
light rain
cloud
rain showers
light rain
rain showers
rain showers
rain showers
clear
part cloud
cloud
part cloud
cloud
rain showers
part cloud
part cloud
part cloud
heavy rain
rain showers
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:54
6:56
6:56
6:58
7:01
7:03
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:16
8:14
8:12
8:08
8:07
8:04
8:01
 mm
1
1
1
1
2
1
1
14
2
Temp °C
18
14
15
15
13
14
14
13
15
15
14
18
17
15
15
15
14
15
14
13
Feels °C
14
12
8
9
7
6
6
6
12
10
12
13
12
11
10
10
10
10
10
11
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
How to use the Wavefinder 
submit an eyeball surf report

Quick surf report for Kilcummin Harbour:

join our community of surf reporters

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Kilcummin Harbour surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


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.

Nearest locationNearest