Dipper › Co. Donegal

Portarthur, Derrybeg

Excellent Quality 2025 Green Coast faces NW

🌊 Dip🏄 Surf
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Surf score now
62
Decent · chest-high 1.1 m, period 10 s
Waves
1.1 m
10 s period from WNW · model cell 2 km out
Sea
15.3°
Grand. M2 buoy, Irish Sea east of Dublin, 259 km away.
Tide
2.2 m
Falling, nearly low. Low at 17:40.
Wind
19 km/h
Gentle breeze, SW, cross, gusts 33
Daylight
07:38
Sunrise. Sunset 19:05. Air 15°C.

Best surf each day

Daylight hours, preferring low tide
Today
18:00
Decent 78/100
chest-high 1.1 m, period 10 s, cross-shore wind · 1.1 m · 15 km/h
▼ 04:25 ▲ 11:05 ▼ 17:40 ▲ 23:50
Sun, 4 Oct
19:00
Decent 65/100
chest-high 1.2 m, period 10 s, cross-shore wind · 1.2 m · 32 km/h
▼ 05:40 ▲ 12:40 ▼ 19:25
Mon, 5 Oct
19:00
Decent 71/100
chest-high 1.3 m, period 11 s, light onshore · 1.3 m · 13 km/h
▲ 01:35 ▼ 07:30 ▲ 14:10 ▼ 21:05
Tue, 6 Oct
10:00
Fresh 60/100
chest-high 1.1 m, period 10 s, onshore wind · 1.1 m · 17 km/h
▲ 03:05 ▼ 09:00 ▲ 15:30 ▼ 22:05
Wed, 7 Oct
10:00
Decent 63/100
chest-high 1.2 m, period 10 s, onshore wind · 1.2 m · 28 km/h
▲ 04:05 ▼ 09:55 ▲ 16:25 ▼ 22:50
Thu, 8 Oct
10:00
Decent 76/100
chest-high 1.2 m, period 11 s, cross-shore wind · 1.2 m · 12 km/h
▲ 04:55 ▼ 10:50 ▲ 17:10 ▼ 23:25
Fri, 9 Oct
13:00
Grim 0/100
no wave data here · 37 km/h
▲ 05:35 ▼ 11:20 ▲ 17:50

Week at a glance

Tap or drag to pick an hour. Everything below follows.
Sat 15:0063 · Decentchest-high 1.1 m · period 10 s
Sat 3Sun 4Mon 5Tue 6Wed 7Thu 8Fri 90003060912151821Sat 03:00 · 66 Decent · nightSat 04:00 · 70 Decent · nightSat 05:00 · 69 Decent · nightSat 06:00 · 66 Decent · nightSat 07:00 · 63 Decent · nightSat 08:00 · 60 FreshSat 09:00 · 65 DecentSat 10:00 · 54 FreshSat 11:00 · 51 FreshSat 12:00 · 62 DecentSat 13:00 · 57 FreshSat 14:00 · 60 FreshSat 15:00 · 63 DecentSat 16:00 · 66 DecentSat 17:00 · 69 DecentSat 18:00 · 78 DecentSat 19:00 · 75 DecentSat 20:00 · 81 Grand · nightSat 21:00 · 78 Decent · nightSat 22:00 · 75 Decent · nightSat 23:00 · 72 Decent · nightSun 00:00 · 70 Decent · nightSun 01:00 · 73 Decent · nightSun 02:00 · 76 Decent · nightSun 03:00 · 62 Decent · nightSun 04:00 · 65 Decent · nightSun 05:00 · 64 Decent · nightSun 06:00 · 70 Decent · nightSun 07:00 · 85 Grand · nightSun 08:00 · 64 DecentSun 09:00 · 61 FreshSun 10:00 · 59 FreshSun 11:00 · 44 BlowySun 12:00 · 41 BlowySun 13:00 · 40 BlowySun 14:00 · 38 BlowySun 15:00 · 41 BlowySun 16:00 · 44 BlowySun 17:00 · 47 FreshSun 18:00 · 62 DecentSun 19:00 · 65 DecentSun 20:00 · 52 Fresh · nightSun 21:00 · 49 Fresh · nightSun 22:00 · 46 Fresh · nightSun 23:00 · 42 Blowy · nightMon 00:00 · 39 Blowy · nightMon 01:00 · 36 Blowy · nightMon 02:00 · 40 Blowy · nightMon 03:00 · 44 Blowy · nightMon 04:00 · 47 Fresh · nightMon 05:00 · 51 Fresh · nightMon 06:00 · 54 Fresh · nightMon 07:00 · 57 Fresh · nightMon 08:00 · 58 FreshMon 09:00 · 55 FreshMon 10:00 · 52 FreshMon 11:00 · 49 FreshMon 12:00 · 46 FreshMon 13:00 · 55 FreshMon 14:00 · 52 FreshMon 15:00 · 53 FreshMon 16:00 · 56 FreshMon 17:00 · 51 FreshMon 18:00 · 68 DecentMon 19:00 · 71 DecentMon 20:00 · 74 Decent · nightMon 21:00 · 77 Decent · nightMon 22:00 · 74 Decent · nightMon 23:00 · 71 Decent · nightTue 00:00 · 67 Decent · nightTue 01:00 · 64 Decent · nightTue 02:00 · 61 Fresh · nightTue 03:00 · 57 Fresh · nightTue 04:00 · 60 Fresh · nightTue 05:00 · 63 Decent · nightTue 06:00 · 67 Decent · nightTue 07:00 · 56 Fresh · nightTue 10:00 · 60 FreshTue 13:00 · 51 FreshTue 16:00 · 45 FreshTue 19:00 · 54 FreshTue 22:00 · 63 Decent · nightWed 01:00 · 53 Fresh · nightWed 04:00 · 43 Blowy · nightWed 07:00 · 53 Fresh · nightWed 10:00 · 63 DecentWed 13:00 · 37 BlowyWed 16:00 · 27 GrimWed 19:00 · 51 FreshWed 22:00 · 60 Fresh · nightThu 01:00 · 56 Fresh · nightThu 04:00 · 60 Fresh · nightThu 07:00 · 64 Decent · nightThu 10:00 · 76 DecentThu 13:00 · 64 DecentThu 19:00 · 52 FreshFri 01:00 · 44 Blowy · nightFri 07:00 · 0 Grim · nightFri 13:00 · 0 GrimFri 19:00 · 0 Grim

Sat, 3 Oct, 15:00

63 Decent
  • chest-high 1.1 m
  • period 10 s
  • cross-shore wind
  • low-ish tide
  • cross wind
NESWsunrisesunset1.1 m19 km/h
faces 319° NW · wind cross
Waves
1.1 m @ 10 s from WNW
Wind
19 km/h SW · gusts 33
Tide
2.1 m · lower half
Air
15°C · dry

Meteogram

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

Hour by hour

Next 48 hours
TimeSurfWavesPeriodFromWindGustTideRainAirWhy
Today
14:0060 Fresh1.1 m (0.6 swell)10 sWNW20 km/h SW322.5 m dry14°chest-high 1.1 m, period 10 s, cross-shore wind
15:0063 Decent1.1 m (0.7 swell)10 sWNW19 km/h SW332.1 m dry15°chest-high 1.1 m, period 10 s, cross-shore wind
16:0066 Decent1.1 m (0.7 swell)10 sWNW22 km/h SW341.7 m dry14°chest-high 1.1 m, period 10 s, cross-shore wind
17:0069 Decent1.1 m (0.7 swell)10 sWNW20 km/h SW341.5 m ▼dry14°chest-high 1.1 m, period 10 s, cross-shore wind
18:0078 Decent1.1 m (0.7 swell)10 sWNW15 km/h SW321.4 m ▼dry14°chest-high 1.1 m, period 10 s, cross-shore wind
19:0075 Decent1.1 m (0.7 swell)10 sWNW15 km/h SSW281.6 m dry13°chest-high 1.1 m, period 10 s, cross-shore wind
20:0081 Grand1.1 m (0.7 swell)10 sWNW14 km/h S281.9 m dry13°chest-high 1.1 m, period 10 s, offshore wind
21:0078 Decent1.1 m (0.8 swell)10 sWNW15 km/h S312.2 m dry12°chest-high 1.1 m, period 10 s, offshore wind
22:0075 Decent1.1 m (0.8 swell)10 sWNW18 km/h S362.6 m dry11°chest-high 1.2 m, period 10 s, offshore wind
23:0072 Decent1.2 m (0.8 swell)10 sWNW22 km/h S402.8 m ▲dry11°chest-high 1.2 m, period 10 s, offshore wind
Sunday, 4 October
00:0070 Decent1.2 m (0.8 swell)10 sWNW26 km/h S442.9 m ▲dry12°chest-high 1.2 m, period 10 s, offshore wind
01:0073 Decent1.2 m (0.8 swell)10 sWNW27 km/h S482.9 m dry12°chest-high 1.2 m, period 10 s, offshore wind
02:0076 Decent1.2 m (0.8 swell)10 sWNW29 km/h S512.6 m dry12°chest-high 1.2 m, period 10 s, offshore wind
03:0062 Decent1.2 m (0.8 swell)10 sWNW28 km/h S532.2 m dry12°chest-high 1.2 m, period 10 s, cross-shore wind
04:0065 Decent1.2 m (0.8 swell)10 sWNW29 km/h SSW541.8 m 0.1 mm13°chest-high 1.2 m, period 10 s, cross-shore wind
05:0064 Decent1.2 m (0.8 swell)10 sWNW29 km/h SSW551.6 m ▼0.1 mm13°chest-high 1.2 m, period 10 s, cross-shore wind
06:0070 Decent1.2 m (0.8 swell)10 sWNW29 km/h S541.5 m ▼0.1 mm13°chest-high 1.2 m, period 10 s, cross-shore wind
07:0085 Grand1.2 m (0.8 swell)10 sWNW29 km/h S541.6 m ▼0.1 mm13°chest-high 1.2 m, period 10 s, offshore wind
08:0064 Decent1.2 m (0.8 swell)10 sWNW26 km/h SSW531.9 m 0.1 mm14°chest-high 1.2 m, period 10 s, cross-shore wind
09:0061 Fresh1.2 m (0.8 swell)10 sWNW27 km/h SSW532.2 m 0.2 mm14°chest-high 1.2 m, period 10 s, cross-shore wind
10:0059 Fresh1.2 m (0.8 swell)10 sWNW30 km/h SSW522.6 m 0.2 mm15°chest-high 1.2 m, period 10 s, cross-shore wind
11:0044 Blowy1.2 m (0.8 swell)10 sWNW33 km/h SSW532.9 m 0.1 mm16°chest-high 1.2 m, period 10 s, cross-shore wind
12:0041 Blowy1.2 m (0.8 swell)10 sWNW35 km/h SSW533.1 m ▲0.2 mm16°chest-high 1.2 m, period 10 s, cross-shore wind
13:0040 Blowy1.2 m (0.8 swell)10 sWNW33 km/h SSW543.2 m ▲0.1 mm15°chest-high 1.2 m, period 10 s, cross-shore wind
14:0038 Blowy1.2 m (0.8 swell)10 sWNW34 km/h SSW553.0 m 0.1 mm15°chest-high 1.2 m, period 10 s, cross-shore wind
15:0041 Blowy1.2 m (0.8 swell)10 sWNW35 km/h SSW572.8 m 0.1 mm15°chest-high 1.2 m, period 10 s, cross-shore wind
16:0044 Blowy1.2 m (0.8 swell)10 sWNW36 km/h SW572.4 m 0.1 mm15°chest-high 1.2 m, period 10 s, cross-shore wind
17:0047 Fresh1.2 m (0.8 swell)10 sWNW35 km/h SW572.0 m 0.1 mm15°chest-high 1.2 m, period 10 s, cross-shore wind
18:0062 Decent1.2 m (0.8 swell)10 sWNW32 km/h SW561.7 m 0.1 mm15°chest-high 1.2 m, period 10 s, cross-shore wind
19:0065 Decent1.2 m (0.9 swell)10 sWNW32 km/h SW561.5 m ▼0.1 mm15°chest-high 1.2 m, period 10 s, cross-shore wind
20:0052 Fresh1.2 m (0.9 swell)10 sWNW34 km/h SW551.5 m ▼0.1 mm15°chest-high 1.2 m, period 10 s, cross-shore wind
21:0049 Fresh1.2 m (0.9 swell)11 sNW37 km/h SW561.6 m 0.1 mm15°chest-high 1.2 m, period 11 s, cross-shore wind
22:0046 Fresh1.2 m (0.9 swell)11 sNW35 km/h SW571.9 m 0.1 mm15°chest-high 1.2 m, period 11 s, cross-shore wind
23:0042 Blowy1.2 m (1.0 swell)11 sNW39 km/h SW592.3 m 0.1 mm15°chest-high 1.2 m, period 11 s, cross-shore wind
Monday, 5 October
00:0039 Blowy1.2 m (1.0 swell)11 sNW33 km/h SSW602.6 m dry15°chest-high 1.2 m, period 11 s, cross-shore wind
01:0036 Blowy1.3 m (1.0 swell)11 sNW38 km/h SW622.8 m ▲dry15°chest-high 1.3 m, period 11 s, cross-shore wind
02:0040 Blowy1.3 m (1.0 swell)11 sNW39 km/h SW532.8 m ▲0.1 mm15°chest-high 1.3 m, period 11 s, cross-shore wind
03:0044 Blowy1.3 m (1.0 swell)11 sNW36 km/h SW532.7 m 0.1 mm15°chest-high 1.3 m, period 11 s, cross-shore wind
04:0047 Fresh1.3 m (1.0 swell)11 sNW36 km/h SW542.4 m 0.1 mm15°chest-high 1.3 m, period 11 s, cross-shore wind
05:0051 Fresh1.3 m (1.1 swell)11 sNW36 km/h SW532.1 m 0.1 mm15°chest-high 1.3 m, period 11 s, cross-shore wind
06:0054 Fresh1.3 m (1.1 swell)11 sNW37 km/h SW511.8 m 0.1 mm15°chest-high 1.3 m, period 11 s, cross-shore wind
07:0057 Fresh1.3 m (1.0 swell)11 sNW35 km/h SW501.6 m ▼0.1 mm15°chest-high 1.3 m, period 11 s, cross-shore wind
08:0058 Fresh1.3 m (1.0 swell)11 sNW34 km/h SW491.6 m ▼0.1 mm15°chest-high 1.2 m, period 11 s, cross-shore wind
09:0055 Fresh1.2 m (1.0 swell)11 sNW34 km/h SW471.7 m 0.1 mm15°chest-high 1.2 m, period 11 s, cross-shore wind
10:0052 Fresh1.2 m (1.0 swell)11 sNW35 km/h SW462.0 m 0.2 mm15°chest-high 1.2 m, period 11 s, cross-shore wind
11:0049 Fresh1.2 m (1.0 swell)11 sNW35 km/h SW452.4 m 0.2 mm15°chest-high 1.2 m, period 11 s, cross-shore wind
12:0046 Fresh1.2 m (1.0 swell)11 sNW33 km/h SW442.8 m 0.2 mm15°chest-high 1.2 m, period 11 s, cross-shore wind
13:0055 Fresh1.2 m (1.0 swell)11 sNW32 km/h SW433.1 m ▲0.3 mm15°chest-high 1.2 m, period 11 s, cross-shore wind

Where the energy comes from

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

Swell arriving between W and NE reaches this spot; anything else is blocked by land and counts for much less.

Tide today

Aranmore, 17 km away · metres above chart datum
04:2511:0517:4023:50
Low 04:25 · 1.3 mHigh 11:05 · 3.3 mLow 17:40 · 1.4 mHigh 23:50 · 2.9 m

The spot

Faces
319° NW
Swell window
W 280° → NE 50°
Exposure
Open coast · model cell 2 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, 2023 Excellent, 2022 Good. The EPA flags a short-term pollution risk here after heavy rain.

Beach profile (PDF) · beaches.ie

On the ground

No lifeguard listedNo toiletsParkingAccessible: YesDogs on lead

As listed by Donegal County Council. Open in Maps.

Sauna after?

Wild Atlantic Sea Sauna Dooey Beach · Dooey Beach, Lettermacaward · 25 km · fixed

Cocoon Sauna · Portnablagh Pier, Dunfanaghy · 26 km · fixed

itSaunatrailer · The Wee Beach, Marble Hill, Dunfanaghy · 28 km · fixed

Portarthur beach is a north facing, long sandy beach; confined by a rocky outcrop east of Inishmeane Island to the North and a small estuary to the south. Fixed dunes are frequent throughout the site. They support a wide variety of plant species including some rare plant forms. There are also a wide range of bird species. Portarthur is situated in a Gaeltacht area with a variety of islands off the coast. Activities at Portarthur beach include swimming, kayaking, boating, sailing, power boating, jet skiing, diving and other land based activities on the beach. The designated bathing area is approx. 0.225km2 and the extent along the water is approximately is 1070m. There is a deep gradient off Portarthur Beach with the water depth reaching 1m approx. 10m from the water line and continuing out at a deep slope.

Put Portarthur, Derrybeg 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.

Set up Dipper Plus
🏄 Portarthur, Derrybeg surf · Decent · sea 15° · 1.1 mSat, 3 Oct 17:30–18:30 · chest-high 1.1 m, period 10 s, cross-shore wind
🏄 Portarthur, Derrybeg surf · Decent · sea 15° · 1.2 mSun, 4 Oct 18:30–19:30 · chest-high 1.2 m, period 10 s, cross-shore wind
🏄 Portarthur, Derrybeg surf · Decent · sea 15° · 1.3 mMon, 5 Oct 18:30–19:30 · chest-high 1.3 m, period 11 s, light onshore

Nearby spots

Lough Inishsirrer

2 km · Co. Donegal · Not classified

Loch Bhun an Inbhir

2 km · Co. Donegal · Not classified

Lough Bheithe

3 km · Co. Donegal · Not classified

Loch Mhachaire na nGall

4 km · Co. Donegal · Not classified

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