Half Moon
Excellent Quality 2025 faces E
Best surf each day
Daylight hours, preferring high tideWeek at a glance
Tap or drag to pick an hour. Everything below follows.Fri, 2 Oct, 17:00
37 Blowy- waist-high 0.7 m
- cross-shore wind
- high-ish tide
- cross wind
Meteogram
Score, waves, wind (green offshore, amber cross, red onshore), rain and air, tideHour by hour
Next 48 hours| Time | Surf | Waves | Period | From | Wind | Gust | Tide | Rain | Air | Why |
|---|---|---|---|---|---|---|---|---|---|---|
| Today | ||||||||||
| 16:00 | 40 Blowy | 0.7 m | 7 s | SE | 29 km/h SSW | 50 | 3.8 m ▲ | 0.1 mm | 17° | waist-high 0.7 m, cross-shore wind, high-ish tide |
| 17:00 | 37 Blowy | 0.7 m | 8 s | SE | 28 km/h SSW | 48 | 3.7 m ▲ | 0.4 mm | 17° | waist-high 0.7 m, cross-shore wind, high-ish tide |
| 18:00 | 17 Grim | 0.7 m | 8 s | SE | 38 km/h SW | 46 | 3.3 m | 1.1 mm | 17° | waist-high 0.7 m, cross-shore wind, high-ish tide |
| 19:00 | 48 Fresh | 0.7 m | 8 s | SE | 25 km/h WSW | 40 | 2.6 m | 0.9 mm | 17° | waist-high 0.7 m, offshore wind, low-ish tide |
| 20:00 | 44 Blowy | 0.6 m | 7 s | SE | 27 km/h WSW | 37 | 1.9 m | dry | 16° | waist-high 0.6 m, offshore wind, low-ish tide |
| 21:00 | 16 Grim | 0.6 m | 7 s | SE | 26 km/h W | 38 | 1.3 m ▼ | dry | 15° | knee-high 0.6 m, offshore wind, low-ish tide |
| 22:00 | 13 Grim | 0.5 m | 7 s | SE | 26 km/h W | 36 | 1.1 m ▼ | dry | 14° | knee-high 0.5 m, offshore wind, low-ish tide |
| 23:00 | 16 Grim | 0.5 m | 7 s | SE | 22 km/h W | 35 | 1.3 m ▼ | dry | 13° | knee-high 0.5 m, offshore wind, low-ish tide |
| Saturday, 3 October | ||||||||||
| 00:00 | 19 Grim | 0.4 m | 7 s | SE | 23 km/h W | 34 | 1.7 m | dry | 12° | knee-high 0.4 m, offshore wind, low-ish tide |
| 01:00 | 22 Grim | 0.3 m | 7 s | SE | 28 km/h W | 34 | 2.3 m | dry | 12° | knee-high 0.4 m, offshore wind, low-ish tide |
| 02:00 | 25 Grim | 0.3 m | 7 s | SE | 23 km/h W | 32 | 2.8 m | dry | 11° | knee-high 0.3 m, offshore wind, high-ish tide |
| 03:00 | 5 Grim | 0.3 m | 7 s | SE | 10 km/h W | 26 | 3.2 m | dry | 10° | flat |
| 04:00 | 5 Grim | 0.2 m | 7 s | SE | 9 km/h W | 20 | 3.5 m ▲ | dry | 10° | flat |
| 05:00 | 5 Grim | 0.2 m | 5 s | SE | 11 km/h W | 18 | 3.6 m ▲ | dry | 10° | flat |
| 06:00 | 5 Grim | 0.2 m | 5 s | SE | 9 km/h WSW | 17 | 3.5 m | dry | 10° | flat |
| 07:00 | 5 Grim | 0.2 m | 5 s | SE | 10 km/h WSW | 16 | 3.0 m | dry | 11° | flat |
| 08:00 | 5 Grim | 0.2 m | 4 s | SE | 9 km/h W | 16 | 2.3 m | dry | 11° | flat |
| 09:00 | 5 Grim | 0.1 m | 4 s | SE | 9 km/h WSW | 16 | 1.8 m | dry | 12° | flat |
| 10:00 | 5 Grim | 0.1 m | 4 s | SE | 9 km/h WSW | 18 | 1.4 m ▼ | dry | 13° | flat |
| 11:00 | 5 Grim | 0.1 m | 4 s | SE | 10 km/h W | 19 | 1.4 m ▼ | dry | 14° | flat |
| 12:00 | 5 Grim | 0.1 m | 4 s | SE | 10 km/h W | 20 | 1.7 m | dry | 14° | flat |
| 13:00 | 5 Grim | 0.1 m | 4 s | SE | 10 km/h WSW | 19 | 2.2 m | dry | 15° | flat |
| 14:00 | 5 Grim | 0.1 m | 4 s | SE | 9 km/h WSW | 19 | 2.7 m | dry | 15° | flat |
| 15:00 | 5 Grim | 0.1 m | 4 s | SE | 9 km/h SW | 21 | 3.1 m | dry | 16° | flat |
| 16:00 | 5 Grim | 0.1 m | 4 s | SE | 19 km/h SE | 22 | 3.4 m ▲ | dry | 15° | flat |
| 17:00 | 5 Grim | 0.1 m | 3 s | SE | 19 km/h SSE | 23 | 3.6 m ▲ | dry | 15° | flat |
| 18:00 | 5 Grim | 0.1 m | 3 s | SE | 18 km/h SSE | 21 | 3.6 m ▲ | dry | 15° | flat |
| 19:00 | 5 Grim | 0.1 m | 3 s | SE | 12 km/h S | 18 | 3.3 m | dry | 15° | flat |
| 20:00 | 5 Grim | 0.1 m | 3 s | SE | 10 km/h SSE | 15 | 2.7 m | dry | 15° | flat |
| 21:00 | 5 Grim | 0.1 m | 3 s | SE | 10 km/h S | 17 | 2.1 m | dry | 14° | flat |
| 22:00 | 5 Grim | 0.1 m | 3 s | SE | 6 km/h SW | 18 | 1.6 m | dry | 13° | flat |
| 23:00 | 5 Grim | 0.1 m | 3 s | SE | 10 km/h WSW | 18 | 1.3 m ▼ | dry | 13° | flat |
| Sunday, 4 October | ||||||||||
| 00:00 | 5 Grim | 0.1 m | 3 s | SE | 14 km/h W | 19 | 1.3 m ▼ | dry | 13° | flat |
| 01:00 | 5 Grim | 0.1 m | 3 s | SE | 8 km/h WSW | 19 | 1.6 m | dry | 13° | flat |
| 02:00 | 5 Grim | 0.1 m | 3 s | SE | 6 km/h SW | 19 | 2.1 m | dry | 13° | flat |
| 03:00 | 5 Grim | 0.1 m | 3 s | SE | 6 km/h SE | 21 | 2.5 m | dry | 13° | flat |
| 04:00 | 5 Grim | 0.1 m | 3 s | SE | 5 km/h S | 22 | 2.9 m | dry | 13° | flat |
| 05:00 | 5 Grim | 0.1 m | 3 s | SE | 10 km/h SSE | 24 | 3.3 m ▲ | dry | 13° | flat |
| 06:00 | 5 Grim | 0.1 m | 3 s | SE | 9 km/h SSE | 26 | 3.5 m ▲ | dry | 13° | flat |
| 07:00 | 5 Grim | 0.1 m | 3 s | SE | 10 km/h SSE | 27 | 3.4 m ▲ | dry | 13° | flat |
| 08:00 | 5 Grim | 0.1 m | 3 s | SE | 12 km/h SSE | 29 | 3.1 m | dry | 14° | flat |
| 09:00 | 5 Grim | 0.2 m | 4 s | SE | 6 km/h S | 31 | 2.6 m | dry | 15° | flat |
| 10:00 | 5 Grim | 0.2 m | 4 s | SE | 12 km/h WSW | 34 | 2.1 m | dry | 16° | flat |
| 11:00 | 5 Grim | 0.2 m | 4 s | SE | 14 km/h SW | 35 | 1.7 m ▼ | dry | 16° | flat |
| 12:00 | 5 Grim | 0.1 m | 4 s | SE | 9 km/h SSW | 36 | 1.6 m ▼ | dry | 17° | flat |
| 13:00 | 5 Grim | 0.1 m | 4 s | SE | 10 km/h SSE | 37 | 1.8 m ▼ | dry | 17° | flat |
| 14:00 | 5 Grim | 0.1 m | 4 s | SE | 12 km/h SW | 35 | 2.1 m | dry | 18° | flat |
| 15:00 | 5 Grim | 0.1 m | 4 s | SE | 15 km/h WSW | 35 | 2.5 m | dry | 18° | flat |
Where the energy comes from
Wave energy (H²·T) this week by direction, against the swell windowSwell arriving between NNE and SSE reaches this spot; anything else is blocked by land and counts for much less.
Tide today
Dublin Port, 4 km away · metres above chart datumThe spot
Facing and swell window are derived from the wave model's coastline around the spot, not surveyed. Know better? Tell us.
Water quality
Recent grades: 2024 Excellent. The EPA flags a short-term pollution risk here after heavy rain.
On the ground
As listed by Dublin City Council. Open in Maps.
Sauna after?
Fad Saoil Saunas (Clontarf) · Clontarf seafront · 4 km · fixed
Fad Saoil Saunas (Blackrock) · Blackrock seafront · 4 km · fixed
Helios Sauna (Dun Laoghaire Floating Sauna) · Coal Harbour, Dun Laoghaire Harbour · 5 km · fixed
Saunos Sandycove · 49 Sandycove Road, Sandycove · 7 km · fixed
The Half Moon Bathing Water is located approximately half way along the Southside of Great South Wall. It is not a beach and access to the bathing water is via ladder or slipway from the Great South Wall. Access for pedestrians along the Great South Wall is permitted solely by foot or bicycle. Vehicle access (except for emergency vehicles) is limited at the beginning of the wall, where bicycle parking and car parking facilities are located. For additional parking, it is encouraged to use the nearby Shelley Banks car and bicycle parking facilities and refrain from parking along the roadway to prevent disturbance/damage to sand dunes. The bathing area is bounded by the Great South Wall to the North and the Irish Sea to the South thus flora and fauna have limited opportunity to grow. However, due to its position and coastal connection to Sean Moore Park and the Irishtown Nature Reserve, it is of international importance for migrating Light-bellied Brent Geese and of national importance for nine other waterfowl species. The Half Moon bathing location is located within the South Dublin Bay and River Tolka Estuary Special Protection Area (SPA), the South Dublin Bay Proposed Natural Heritage Areas and South Dublin Bay Special Area of Conservation (SAC). It is encouraged to check wind, weather and tidal forecasts before swimming. During times of adverse weather, Dublin Port Company (<a href="https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.dublinport.ie%2Fpublic-notices%2F&data=05%7C02%7C%7C87832797e7f04f86bcdc08dc297b7a20%7C03f164957710409d90cb9b3f403feeea%7C0%7C0%7C638430857721299040%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=fNDpL7pcYw1LNii2yyrtaB0RYeXkdcLg8gfwjz3cxIQ%3D&reserved=0">https://www.dublinport.ie/public-notices/</a>) and Dublin City Council will issue a public safety notice for the temporary closure of the Great South Wall.
Put Half Moon in your calendar
Dipper Plus drops the best surf hour here into your phone every day, with waves, sea temperature, tide and a 45-minute nudge. Up to three spots.
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Score is Dipper's own blend. It rates comfort, not safety. Forecast: Met Éireann. Waves: Marine Institute Irish Shelf wave model.