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Surf Forecasts:
Lighthouse surfForecast / Sligo / Ireland
48hr Weather and Surf, issued 12 am Wednesday 20 May 2026 ISTForecast update in hr min s Forecast update imminent
Lighthouse surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Lighthouse sea temperature is
11.8° C
(Which is slightly warmer than usual)How big are the waves at Lighthouse today?
The current surf forecast for Lighthouse at 4AM is: 2.0m 14s primary swell from a West direction and 0.6m 4s secondary swell from a Southwest direction (forecast issued at 12:00am May 20). The wind direction is predicted to be cross-onshore.
| Time (IST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 May) | 6ft (1.9m) | 14s |
| Afternoon (20 May) | 5.5ft (1.7m) | 13s |
| Evening (20 May) | 5ft (1.5m) | 12s |
Table - waves today at Lighthouse. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 11mm), heaviest on Thu afternoon. Very mild (max 18°C on Fri afternoon, min 9°C on Tue night). Mainly fresh winds. | ||||||||||||||||||||||||
Wednesday 20 | Thursday 21 | Friday 22 | ||||||||||||||||||||||
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 | 4 PM | 7 PM | 10 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
W 15 | W 14 | W 14 | W 13 | W 13 | W 13 | W 12 | W 12 | W 12 | W 11 | W 11 | W 11 | W 11 | W 11 | W 11 | W 10 | W 11 | WSW 11 | WSW 10 | WSW 11 | WSW 12 | WSW 12 | WSW 11 | WSW 11 | |
1453 | 1663 | 1597 | 1275 | 1094 | 917 | 735 | 535 | 389 | 300 | 235 | 223 | 227 | 181 | 181 | 141 | 181 | 187 | 184 | 150 | 189 | 189 | 202 | 194 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | cross-on | on | on | on | cross-on | cross | cross-off | cross-off | cross-off | cross | cross | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | cross | cross | cross-on | cross-on | cross-on | |
High Tide | 9:03AM3.11m | 9:26PM3.53m | 10:00AM2.85m | 10:24PM3.38m | 11:04AM2.61m | |||||||||||||||||||
Low Tide | 2:45AM0.16m | 2:53PM0.37m | 3:43AM0.36m | 3:45PM0.59m | 4:50AM0.57m | 4:45PM0.80m | ||||||||||||||||||
 |  |  |  | |  | |  | | | | | | | | | | | | | | | | | |
 | — | 5:22 | — | — | — | — | — | — | — | 5:20 | — | — | — | — | — | — | — | 5:20 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 9:38 | — | — | — | — | — | — | — | 9:40 | — | — | — | — | — | — | — | 9:43 | — |
— | 1 | 1 | — | — | — | — | — | 1 | 1 | — | — | — | 2 | 3 | 1 | — | — | — | — | — | — | — | — | |
Temp °C | 9 | 11 | 11 | 11 | 13 | 15 | 13 | 13 | 13 | 13 | 14 | 14 | 15 | 15 | 14 | 13 | 13 | 12 | 13 | 15 | 17 | 18 | 16 | 14 |
5 | 7 | 7 | 6 | 8 | 11 | 10 | 11 | 10 | 9 | 11 | 11 | 13 | 13 | 9 | 9 | 9 | 9 | 10 | 11 | 12 | 14 | 13 | 13 | |
Swell 1 Height (m) Direction Period (s) | W 15 | W 14 | W 14 | W 13 | W 13 | W 13 | W 12 | W 12 | W 12 | W 11 | W 11 | W 11 | W 11 | W 11 | W 11 | W 10 | W 11 | WSW 11 | WSW 10 | WSW 11 | WSW 12 | WSW 12 | N 6 | WSW 11 |
 kJ | 1453 | 1663 | 1597 | 1275 | 1094 | 917 | 735 | 535 | 389 | 300 | 235 | 223 | 227 | 181 | 181 | 141 | 181 | 187 | 184 | 150 | 189 | 189 | 1 | 194 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | NW 6 | NW 6 | NW 8 | NW 8 | NW 8 | NW 8 | NW 7 | NW 7 | NNW 7 | NW 7 | NW 7 | NW 7 | NW 7 | NW 6 | — | N 6 |
| kJ | — | — | — | — | — | — | — | — | 14 | 20 | 68 | 53 | 37 | 20 | 8 | 8 | 5 | 2 | 2 | 2 | 2 | 2 | — | 1 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | NW 9 | — | — | — | — | NW 9 | NW 9 | N 9 | N 9 | N 8 | N 8 | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | 14 | — | — | — | — | 3 | 3 | 2 | 1 | 1 | 1 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WSW 3 | SW 4 | — | — | — | — | — | — | SSE 3 | SSE 3 | S 3 | S 3 | S 3 | S 3 | SSE 3 | S 4 | SSE 3 | S 3 | SSE 3 | S 3 | S 3 | SSW 3 | WSW 11 | — |
| kJ | 7 | 10 | — | — | — | — | — | — | 3 | 6 | 8 | 5 | 3 | 1 | 3 | 9 | 9 | 6 | 6 | 6 | 3 | 2 | 202 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 5 | 25 | 151 | 248 | 248 | 41 | 5 | 0 | 5 | 10 | 10 | 10 | 10 | 8 | 39 | 5 | 5 | 5 | 8 | 10 | 10 | 41 | 41 | 5 |
Best forecast wave conditions in Sligo | ||||||||||||||||||||||||
Best forecast wave conditions in Ireland | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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