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Kilcummin Harbour Surf Forecast
/ Mayo and Achill Island (14 surf breaks) /
Surf Forecasts:
Kilcummin Harbour surfForecast / Mayo and Achill Island / Ireland
48hr Weather and Surf, issued 6 pm Thursday 18 Sep 2025 IST
How big are the waves at Kilcummin Harbour today?
The current surf forecast for Kilcummin Harbour at 7PM is: 1.3m 13s primary swell from a North-northwest direction and 1.6m 9s secondary swell from a West direction (forecast issued at 06:00pm September 18). An open ocean swell of 0.5m 3s is not directed at the surf break. The wind direction is predicted to be offshore and the swell rating is 3.
| Time (IST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Sep) | - | - |
| Afternoon (18 Sep) | 4.5ft (1.3m) | 10s |
| Evening (18 Sep) | 6ft (1.8m) | 12s |
Table - waves today at Kilcummin Harbour. (Swell directed towards the surf break)
Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | |||||||||||||||||||||
| 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 10 | 13 | 12 | 12 | 12 | 11 | 11 | 10 | 10 | 12 | 11 | 10 | 10 | 12 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 9 | 10 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 342 | 530 | 947 | 1064 | 976 | 708 | 526 | 470 | 541 | 1058 | 900 | 663 | 494 | 966 | 1132 | 1688 | 2481 | 3109 | 3728 | 2872 | 2221 | 1967 | 1753 | 1334 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | off | cross- off | cross- off | cross- off | off | off | cross- off | cross- off | cross- off | off | off | off | off | cross- on | cross- on | cross- on | on | on | on | cross- on | on | on | on |
High Tide / height (m) | 4:31PM 3.14 | 5:05AM 2.80 | 5:16PM 3.36 | 5:44AM 2.98 | 5:53PM 3.52 | 6:17AM 3.12 | ||||||||||||||||||
Low Tide / height (m) | 10:58PM 0.51 | 10:56AM 0.62 | 11:36PM 0.32 | 11:33AM 0.43 | 12:08AM 0.18 | 12:07PM 0.30 | ||||||||||||||||||
Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | 7:15 | - | - | - | - | - | - | - | 7:16 | - | - | - | - | - | - | - | 7:18 | - |
| Sunset | - | 7:46 | - | - | - | - | - | - | - | 7:44 | - | - | - | - | - | - | - | 7:42 | - | - | - | - | - | - |
 | |  |  | | |  | | |  |  | | | | |  | |  |  | | | | | | |
Rain (mm) | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | 1 | 1 | 1 | 1 | 2 | 3 | 1 | - | 1 | - |
| Temp. °C | 14 | 17 | 17 | 15 | 14 | 12 | 13 | 14 | 15 | 13 | 12 | 11 | 11 | 11 | 12 | 12 | 12 | 13 | 11 | 10 | 11 | 12 | 12 | 12 |
| Feels °C (?) | 11 | 14 | 12 | 10 | 11 | 10 | 11 | 10 | 10 | 9 | 9 | 8 | 8 | 9 | 7 | 6 | 5 | 8 | -1 | -3 | 1 | 2 | 3 | 4 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for Mayo and Achill Island
Cross-off wind 40 km from Kilcummin Harbour has swung offshore (light winds from the SSW.(Wind varies from 160 to 230 degs) at Sligo Airport). 1.4m 10s swell from the WNW with a 1.0m 12s groundswell from the NW and a 0.6m 8s swell, also from the NW. 3 swells combining to make bigger set waves.
40 km away, 1 h 54 min ago
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