Using Surf-Forecast’s Historical Surf Data To Find The Most Consistent Waves On Earth
Using our statistical data for 7000 spots dating back to 2006, we can find those waves that break the most, with the best winds.
Surf Forecasts:
Kilcummin Harbour surfForecast / Mayo and Achill Island / Ireland
48hr Weather and Surf, issued 11 am Sunday 21 Dec 2025 ISTForecast update in hr min s Forecast update imminent
Kilcummin Harbour surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Kilcummin Harbour sea temperature is
10.4° C
(Which is normal for this time of year)How big are the waves at Kilcummin Harbour today?
The current surf forecast for Kilcummin Harbour at 6PM is: 4.0m 15s primary swell from a West-northwest direction (forecast issued at 11:00am December 21). The wind direction is predicted to be glassy and the swell rating is 7.
| Time (IST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Dec) | 16ft (5.0m) | 16s |
| Afternoon (21 Dec) | 13ft (4.0m) | 15s |
| Evening (21 Dec) | 11ft (3.5m) | 14s |
Table - waves today at Kilcummin Harbour. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | |||||||||||||||||||||
| 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 16 | 16 | 15 | 15 | 14 | 14 | 13 | 13 | 12 | 12 | 12 | 11 | 11 | 11 | 16 | 15 | 14 | 13 | 13 | 13 | 16 | 14 | 14 | 13 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 11185 | 9753 | 8014 | 6324 | 5120 | 3905 | 2955 | 2415 | 1659 | 1444 | 1170 | 843 | 711 | 606 | 362 | 726 | 2318 | 2665 | 2860 | 2283 | 4340 | 3825 | 2867 | 2310 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | glass | cross | cross | cross- on | on | cross- on | cross- on | glass | glass | glass | glass | glass | on | on | on | on | on | on | on | cross- on | cross- on |
High Tide / height (m) | 6:31PM 2.87 | 6:54AM 3.29 | 7:07PM 2.82 | 7:30AM 3.29 | 7:43PM 2.75 | |||||||||||||||||||
Low Tide / height (m) | 12:26PM 0.53 | 12:26AM 0.44 | 1:03PM 0.55 | 12:59AM 0.46 | 1:40PM 0.59 | 1:33AM 0.51 | ||||||||||||||||||
Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | |||||||||||||||||||||
| Sunrise | 8:55 | - | - | - | - | - | - | - | 8:55 | - | - | - | - | - | - | - | 8:56 | - | - | - | - | - | - | - |
| Sunset | - | - | 4:14 | - | - | - | - | - | - | - | 4:14 | - | - | - | - | - | - | - | 4:15 | - | - | - | - | - |
 |  | |  | | | |  |  | | | | | | | | | | | | | |  | | |
Rain (mm) | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 6 | 7 | 7 | 7 | 7 | 8 | 8 | 8 | 8 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 8 | 8 |
| Feels °C (?) | 3 | 2 | 4 | 5 | 4 | 5 | 5 | 6 | 6 | 7 | 8 | 8 | 8 | 8 | 8 | 8 | 7 | 7 | 5 | 4 | 3 | 4 | 3 | 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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