Dipper › Co. Dublin

Half Moon

Excellent Quality 2025 faces E

Any tidePrefer highPrefer low
Dip score now
86
Grand · gentle breeze, dry
Waves
0.4 m
5 s period from SE · model cell 1.8 km out
Sea
14.9°
Fresh. M2 buoy, Irish Sea east of Dublin, 51 km away.
Tide
1.1 m
Low tide. High at 16:10.
Wind
19 km/h
Gentle breeze, SSW, cross, gusts 36
Daylight
07:27
Sunrise. Sunset 19:00. Air 17°C.

Best dip each day

Daylight hours, preferring low tide
Today
09:00
Grand 87/100
gentle breeze, dry, small waves 0.4 m · 0.4 m · 13 km/h
▲ 03:40 ▼ 09:15 ▲ 16:10 ▼ 21:50
Sat, 3 Oct
11:00
Grand 97/100
light winds, dry, calm sea · 0.1 m · 10 km/h
▲ 04:45 ▼ 10:15 ▲ 17:15 ▼ 23:10
Sun, 4 Oct
12:00
Grand 93/100
gentle breeze, dry, calm sea · 0.2 m · 17 km/h
▲ 06:10 ▼ 11:45 ▲ 18:40
Mon, 5 Oct
13:00
Grand 93/100
gentle breeze, dry, calm sea · 0.2 m · 18 km/h
▼ 00:45 ▲ 07:45 ▼ 13:15 ▲ 20:00
Tue, 6 Oct
16:00
Grand 94/100
light winds, dry, calm sea · 0.2 m · 11 km/h
▼ 02:10 ▲ 09:00 ▼ 14:30 ▲ 21:10
Wed, 7 Oct
13:00
Grand 81/100
gentle breeze, dry · 15 km/h
▼ 03:15 ▲ 10:00 ▼ 15:40 ▲ 22:05
Thu, 8 Oct
19:00
Grand 86/100
light winds, dry · 10 km/h
▼ 04:05 ▲ 10:50 ▼ 16:20 ▲ 22:55

Week at a glance

Tap or drag to pick an hour. Everything below follows.
Fri 10:0085 · Grandgentle breeze · dry
Fri 2Sat 3Sun 4Mon 5Tue 6Wed 7Thu 80003060912151821Fri 08:00 · 82 GrandFri 09:00 · 87 GrandFri 10:00 · 85 GrandFri 11:00 · 71 DecentFri 12:00 · 67 DecentFri 13:00 · 63 DecentFri 14:00 · 59 FreshFri 15:00 · 47 FreshFri 16:00 · 38 BlowyFri 17:00 · 41 BlowyFri 18:00 · 35 BlowyFri 19:00 · 46 FreshFri 20:00 · 59 Fresh · nightFri 21:00 · 64 Decent · nightFri 22:00 · 83 Grand · nightFri 23:00 · 76 Decent · nightSat 00:00 · 78 Decent · nightSat 01:00 · 58 Fresh · nightSat 02:00 · 70 Decent · nightSat 03:00 · 70 Decent · nightSat 04:00 · 72 Decent · nightSat 05:00 · 70 Decent · nightSat 06:00 · 75 Decent · nightSat 07:00 · 80 GrandSat 08:00 · 86 GrandSat 09:00 · 91 GrandSat 10:00 · 96 GrandSat 11:00 · 97 GrandSat 12:00 · 93 GrandSat 13:00 · 89 GrandSat 14:00 · 79 DecentSat 15:00 · 59 FreshSat 16:00 · 55 FreshSat 17:00 · 67 DecentSat 18:00 · 70 DecentSat 19:00 · 80 GrandSat 20:00 · 79 Decent · nightSat 21:00 · 90 Grand · nightSat 22:00 · 94 Grand · nightSat 23:00 · 99 Grand · nightSun 00:00 · 97 Grand · nightSun 01:00 · 93 Grand · nightSun 02:00 · 89 Grand · nightSun 03:00 · 85 Grand · nightSun 04:00 · 81 Grand · nightSun 05:00 · 77 Decent · nightSun 06:00 · 73 Decent · nightSun 07:00 · 76 Decent · nightSun 08:00 · 75 DecentSun 09:00 · 80 GrandSun 10:00 · 85 GrandSun 11:00 · 90 GrandSun 12:00 · 93 GrandSun 13:00 · 89 GrandSun 14:00 · 85 GrandSun 15:00 · 81 GrandSun 16:00 · 83 GrandSun 17:00 · 79 DecentSun 18:00 · 69 DecentSun 19:00 · 68 DecentSun 20:00 · 72 Decent · nightSun 21:00 · 77 Decent · nightSun 22:00 · 81 Grand · nightSun 23:00 · 86 Grand · nightMon 00:00 · 91 Grand · nightMon 01:00 · 93 Grand · nightMon 02:00 · 89 Grand · nightMon 03:00 · 85 Grand · nightMon 04:00 · 81 Grand · nightMon 05:00 · 77 Decent · nightMon 06:00 · 73 Decent · nightMon 07:00 · 69 Decent · nightMon 10:00 · 73 DecentMon 13:00 · 93 GrandMon 16:00 · 83 GrandMon 19:00 · 76 DecentMon 22:00 · 81 Grand · nightTue 01:00 · 95 Grand · nightTue 04:00 · 92 Grand · nightTue 07:00 · 80 Grand · nightTue 10:00 · 69 DecentTue 13:00 · 78 DecentTue 16:00 · 94 GrandTue 19:00 · 75 DecentTue 22:00 · 67 Decent · nightWed 01:00 · 81 Grand · nightWed 04:00 · 83 Grand · nightWed 07:00 · 70 Decent · nightWed 10:00 · 63 DecentWed 13:00 · 81 GrandWed 19:00 · 76 DecentThu 01:00 · 72 Decent · nightThu 07:00 · 74 Decent · nightThu 13:00 · 74 DecentThu 19:00 · 86 Grand

Fri, 2 Oct, 10:00

85 Grand
  • gentle breeze
  • dry
  • small waves 0.4 m
  • low tide
  • cross wind
NESWsunrisesunset0.4 m19 km/h
faces 100° E · wind cross
Waves
0.4 m @ 5 s from SE
Wind
19 km/h SSW · gusts 36
Tide
1.1 m · low
Air
17°C · dry

Meteogram

Score, waves, wind (green offshore, amber cross, red onshore), rain and air, tide

Hour by hour

Next 48 hours
TimeDipWavesPeriodFromWindGustTideRainAirWhy
Today
09:0087 Grand0.4 m5 sSE13 km/h S281.1 m ▼dry16°gentle breeze, dry, small waves 0.4 m
10:0085 Grand0.4 m5 sSE19 km/h SSW361.1 m ▼dry17°gentle breeze, dry, small waves 0.4 m
11:0071 Decent0.5 m5 sSE21 km/h SSW401.6 m dry17°moderate breeze, dry, small waves 0.5 m
12:0067 Decent0.5 m5 sSE25 km/h SSW442.2 m dry18°moderate breeze, dry, small waves 0.5 m
13:0063 Decent0.5 m6 sSE26 km/h S472.8 m dry17°moderate breeze, dry, small waves 0.5 m
14:0059 Fresh0.6 m7 sSE28 km/h SSW493.2 m 0.1 mm17°moderate breeze, dry, small waves 0.6 m
15:0047 Fresh0.7 m8 sSE26 km/h SSW483.6 m ▲0.2 mm17°moderate breeze, showers possible, small waves 0.7 m
16:0038 Blowy0.7 m8 sSE25 km/h S473.8 m ▲0.4 mm17°moderate breeze, rain, small waves 0.7 m
17:0041 Blowy0.7 m8 sSE26 km/h S473.7 m ▲0.5 mm17°moderate breeze, rain, small waves 0.7 m
18:0035 Blowy0.7 m8 sSE35 km/h SW453.3 m 0.7 mm17°fresh breeze, showers possible, small waves 0.7 m
19:0046 Fresh0.7 m8 sSE37 km/h WSW392.6 m 0.4 mm17°fresh breeze, offshore, flatter inshore, showers possible
20:0059 Fresh0.6 m8 sSE31 km/h W351.9 m dry15°fresh breeze, offshore, flatter inshore, dry
21:0064 Decent0.5 m8 sSE29 km/h W361.3 m ▼dry14°fresh breeze, offshore, flatter inshore, dry
22:0083 Grand0.5 m8 sSE24 km/h W361.1 m ▼dry14°moderate breeze, offshore, flatter inshore, dry
23:0076 Decent0.4 m8 sSE26 km/h W351.3 m ▼dry13°moderate breeze, offshore, flatter inshore, dry
Saturday, 3 October
00:0078 Decent0.4 m8 sSE24 km/h W331.7 m dry12°moderate breeze, offshore, flatter inshore, dry
01:0058 Fresh0.3 m6 sSE31 km/h W332.3 m dry11°fresh breeze, offshore, flatter inshore, dry
02:0070 Decent0.3 m6 sSE27 km/h W312.8 m dry11°moderate breeze, offshore, flatter inshore, dry
03:0070 Decent0.3 m6 sSE19 km/h W253.2 m dry11°gentle breeze, dry, calm sea
04:0072 Decent0.3 m5 sSE11 km/h W193.5 m ▲dry11°light winds, dry, calm sea
05:0070 Decent0.2 m5 sSE8 km/h WSW173.6 m ▲dry11°light winds, dry, calm sea
06:0075 Decent0.2 m5 sSE7 km/h WSW173.5 m dry11°light winds, dry, calm sea
07:0080 Grand0.2 m5 sSE10 km/h W173.0 m dry11°light winds, dry, calm sea
08:0086 Grand0.2 m4 sSE10 km/h WSW172.3 m dry12°light winds, dry, calm sea
09:0091 Grand0.2 m4 sSE9 km/h WSW171.8 m dry12°light winds, dry, calm sea
10:0096 Grand0.1 m4 sSE9 km/h W161.4 m ▼dry13°light winds, dry, calm sea
11:0097 Grand0.1 m4 sSE10 km/h W161.4 m ▼dry14°light winds, dry, calm sea
12:0093 Grand0.1 m4 sSE10 km/h W161.7 m dry14°light winds, dry, calm sea
13:0089 Grand0.1 m4 sSE8 km/h SW182.2 m dry15°light winds, dry, calm sea
14:0079 Decent0.1 m4 sSE12 km/h SE202.7 m dry15°gentle breeze, dry, calm sea
15:0059 Fresh0.1 m4 sSE23 km/h SE243.1 m dry15°moderate breeze, onshore, choppy, dry
16:0055 Fresh0.1 m4 sSE20 km/h SSE253.4 m ▲dry15°moderate breeze, onshore, choppy, dry
17:0067 Decent0.1 m3 sSE13 km/h WSW253.6 m ▲dry17°gentle breeze, dry, calm sea
18:0070 Decent0.1 m3 sSE15 km/h WSW243.6 m ▲dry16°gentle breeze, dry, calm sea
19:0080 Grand0.1 m3 sSE8 km/h SW213.3 m dry16°light winds, dry, calm sea
20:0079 Decent0.1 m3 sSE12 km/h S202.7 m dry15°gentle breeze, dry, calm sea
21:0090 Grand0.1 m3 sSE10 km/h S202.1 m dry14°light winds, dry, calm sea
22:0094 Grand0.1 m3 sSE7 km/h WSW191.6 m dry14°light winds, dry, calm sea
23:0099 Grand0.1 m3 sSE10 km/h W191.3 m ▼dry14°light winds, dry, calm sea
Sunday, 4 October
00:0097 Grand0.1 m3 sSE9 km/h WSW201.3 m ▼dry14°light winds, dry, calm sea
01:0093 Grand0.1 m3 sSE5 km/h S221.6 m dry14°light winds, dry, calm sea
02:0089 Grand0.1 m3 sSE7 km/h SSE232.1 m dry14°light winds, dry, calm sea
03:0085 Grand0.2 m4 sSE10 km/h SSE252.5 m dry14°light winds, dry, calm sea
04:0081 Grand0.2 m4 sSE5 km/h SSE272.9 m dry14°light winds, dry, calm sea
05:0077 Decent0.2 m4 sSE12 km/h SW303.3 m ▲dry14°light winds, dry, calm sea
06:0073 Decent0.2 m4 sSE11 km/h SW323.5 m ▲dry15°light winds, dry, calm sea
07:0076 Decent0.2 m4 sSE10 km/h SW333.4 m ▲dry15°light winds, dry, calm sea
08:0075 Decent0.2 m4 sSE13 km/h SW323.1 m dry15°gentle breeze, dry, calm sea

Where the energy comes from

Wave energy (H²·T) this week by direction, against the swell window

Swell 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 datum
03:4009:1516:1021:50
High 03:40 · 3.9 mLow 09:15 · 1.1 mHigh 16:10 · 3.8 mLow 21:50 · 1.1 m

The spot

Faces
100° E
Swell window
NNE 20° → SSE 160°
Exposure
Bay · model cell 1.8 km out
Water
Excellent Quality

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.

Beach profile (PDF) · beaches.ie

On the ground

No lifeguard listedNo toiletsParkingDogs on lead (Yes)

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&amp;data=05%7C02%7C%7C87832797e7f04f86bcdc08dc297b7a20%7C03f164957710409d90cb9b3f403feeea%7C0%7C0%7C638430857721299040%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&amp;sdata=fNDpL7pcYw1LNii2yyrtaB0RYeXkdcLg8gfwjz3cxIQ%3D&amp;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 dip hour here into your phone every day, with waves, sea temperature, tide and a 45-minute nudge. Up to three spots.

Set up Dipper Plus
🌊 Half Moon dip · Grand · sea 15° · 0.4 mFri, 2 Oct 08:30–09:30 · gentle breeze, dry, small waves 0.4 m
🌊 Half Moon dip · Grand · sea 15° · 0.1 mSat, 3 Oct 10:30–11:30 · light winds, dry, calm sea
🌊 Half Moon dip · Grand · sea 15° · 0.2 mSun, 4 Oct 11:30–12:30 · gentle breeze, dry, calm sea

Nearby spots

Score is Dipper's own blend. It rates comfort, not safety. Forecast: Met Éireann. Waves: Marine Institute Irish Shelf wave model.