Dipper › Co. Donegal

Portarthur, Derrybeg

Excellent Quality 2025 Green Coast faces NW

🌊 Dip🏄 Surf
Any tidePrefer highPrefer low
Surf score now
59
Fresh · chest-high 1.3 m, period 12 s
Waves
1.3 m
12 s period from WNW · model cell 2 km out
Sea
14.9°
Fresh. M2 buoy, Irish Sea east of Dublin, 259 km away.
Tide
3.4 m
High tide. Low at 16:10.
Wind
32 km/h
Fresh breeze, S, offshore, gusts 56
Daylight
07:37
Sunrise. Sunset 19:08. Air 13°C.

Best surf each day

Daylight hours, preferring high tide
Today
10:00
Grand 89/100
chest-high 1.3 m, period 12 s, offshore wind · 1.3 m · 31 km/h
▼ 03:35 ▲ 10:00 ▼ 16:10 ▲ 22:35
Sat, 3 Oct
11:00
Decent 71/100
chest-high 1.1 m, period 10 s, cross-shore wind · 1.1 m · 22 km/h
▼ 04:25 ▲ 11:05 ▼ 17:40 ▲ 23:50
Sun, 4 Oct
11:00
Decent 66/100
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
16:00
Decent 66/100
chest-high 1.2 m, period 11 s, cross-shore wind · 1.2 m · 31 km/h
▲ 01:35 ▼ 07:30 ▲ 14:10 ▼ 21:05
Tue, 6 Oct
16:00
Fresh 61/100
chest-high 1.2 m, period 11 s, onshore wind · 1.2 m · 18 km/h
▲ 03:05 ▼ 09:00 ▲ 15:30 ▼ 22:05
Wed, 7 Oct
10:00
Grim 0/100
no wave data here · 21 km/h
▲ 04:05 ▼ 09:55 ▲ 16:25 ▼ 22:50
Thu, 8 Oct
13:00
Grim 0/100
no wave data here · 19 km/h
▲ 04:55 ▼ 10:50 ▲ 17:10 ▼ 23:25

Week at a glance

Tap or drag to pick an hour. Everything below follows.
Fri 11:0058 · Freshchest-high 1.3 m · period 12 s
Fri 2Sat 3Sun 4Mon 5Tue 6Wed 7Thu 80003060912151821Fri 10:00 · 89 GrandFri 11:00 · 58 FreshFri 12:00 · 73 DecentFri 13:00 · 39 BlowyFri 14:00 · 53 FreshFri 15:00 · 55 FreshFri 16:00 · 60 FreshFri 17:00 · 54 FreshFri 18:00 · 57 FreshFri 19:00 · 60 FreshFri 20:00 · 63 Decent · nightFri 21:00 · 66 Decent · nightFri 22:00 · 61 Fresh · nightFri 23:00 · 62 Decent · nightSat 00:00 · 66 Decent · nightSat 01:00 · 63 Decent · nightSat 02:00 · 59 Fresh · nightSat 03:00 · 56 Fresh · nightSat 04:00 · 52 Fresh · nightSat 05:00 · 53 Fresh · nightSat 06:00 · 56 Fresh · nightSat 07:00 · 59 Fresh · nightSat 08:00 · 62 DecentSat 09:00 · 65 DecentSat 10:00 · 68 DecentSat 11:00 · 71 DecentSat 12:00 · 68 DecentSat 13:00 · 65 DecentSat 14:00 · 62 DecentSat 15:00 · 59 FreshSat 16:00 · 56 FreshSat 17:00 · 53 FreshSat 18:00 · 52 FreshSat 19:00 · 55 FreshSat 20:00 · 59 Fresh · nightSat 21:00 · 62 Decent · nightSat 22:00 · 65 Decent · nightSat 23:00 · 68 Decent · nightSun 00:00 · 70 Decent · nightSun 01:00 · 62 Decent · nightSun 02:00 · 59 Fresh · nightSun 03:00 · 43 Blowy · nightSun 04:00 · 40 Blowy · nightSun 05:00 · 36 Blowy · nightSun 06:00 · 35 Blowy · nightSun 07:00 · 50 Fresh · nightSun 08:00 · 46 FreshSun 09:00 · 49 FreshSun 10:00 · 51 FreshSun 11:00 · 66 DecentSun 12:00 · 57 FreshSun 13:00 · 58 FreshSun 14:00 · 55 FreshSun 15:00 · 64 DecentSun 16:00 · 49 FreshSun 17:00 · 46 FreshSun 18:00 · 43 BlowySun 19:00 · 40 BlowySun 20:00 · 41 Blowy · nightSun 21:00 · 56 Fresh · nightSun 22:00 · 47 Fresh · nightSun 23:00 · 51 Fresh · nightMon 00:00 · 54 Fresh · nightMon 01:00 · 57 Fresh · nightMon 02:00 · 58 Fresh · nightMon 03:00 · 54 Fresh · nightMon 04:00 · 51 Fresh · nightMon 05:00 · 47 Fresh · nightMon 06:00 · 44 Blowy · nightMon 07:00 · 41 Blowy · nightMon 10:00 · 47 FreshMon 13:00 · 56 FreshMon 16:00 · 66 DecentMon 19:00 · 57 FreshMon 22:00 · 54 Fresh · nightTue 01:00 · 64 Decent · nightTue 04:00 · 68 Decent · nightTue 07:00 · 50 Fresh · nightTue 10:00 · 46 FreshTue 13:00 · 55 FreshTue 16:00 · 61 FreshTue 19:00 · 52 FreshTue 22:00 · 57 Fresh · nightWed 01:00 · 67 Decent · nightWed 04:00 · 0 Grim · nightWed 07:00 · 0 Grim · nightWed 10:00 · 0 GrimWed 13:00 · 0 GrimWed 19:00 · 0 GrimThu 01:00 · 0 Grim · nightThu 07:00 · 0 Grim · nightThu 13:00 · 0 GrimThu 19:00 · 0 Grim

Fri, 2 Oct, 11:00

58 Fresh
  • chest-high 1.3 m
  • period 12 s
  • strong offshore
  • high-ish tide
  • rain
  • offshore wind
NESWsunrisesunset1.3 m32 km/h
faces 319° NW · wind offshore
Waves
1.3 m @ 12 s from WNW
Wind
32 km/h S · gusts 56
Tide
3.4 m · high
Air
13°C · 1.4 mm rain

Meteogram

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

Hour by hour

Next 48 hours
TimeSurfWavesPeriodFromWindGustTideRainAirWhy
Today
10:0089 Grand1.3 m (1.1 swell)12 sWNW31 km/h S533.5 m ▲0.8 mm13°chest-high 1.3 m, period 12 s, offshore wind
11:0058 Fresh1.3 m (1.1 swell)12 sWNW32 km/h S563.4 m ▲1.4 mm13°chest-high 1.3 m, period 12 s, strong offshore
12:0073 Decent1.3 m (1.1 swell)12 sWNW29 km/h S593.0 m 3.0 mm13°chest-high 1.2 m, period 12 s, offshore wind
13:0039 Blowy1.2 m (1.1 swell)11 sWNW33 km/h SSW582.4 m 2.4 mm14°chest-high 1.2 m, period 11 s, cross-shore wind
14:0053 Fresh1.2 m (1.1 swell)11 sWNW23 km/h SSW521.8 m 1.1 mm13°chest-high 1.2 m, period 11 s, cross-shore wind
15:0055 Fresh1.2 m (1.0 swell)11 sWNW27 km/h SSW491.4 m ▼0.4 mm13°chest-high 1.2 m, period 11 s, cross-shore wind
16:0060 Fresh1.2 m (1.0 swell)11 sWNW12 km/h W451.2 m ▼0.1 mm13°chest-high 1.2 m, period 11 s, cross-shore wind
17:0054 Fresh1.2 m (1.0 swell)11 sWNW21 km/h WSW471.2 m ▼dry13°chest-high 1.2 m, period 11 s, cross-shore wind
18:0057 Fresh1.2 m (1.0 swell)11 sWNW26 km/h WSW491.5 m dry13°chest-high 1.2 m, period 11 s, cross-shore wind
19:0060 Fresh1.2 m (1.0 swell)11 sWNW19 km/h W471.9 m dry12°chest-high 1.2 m, period 11 s, cross-shore wind
20:0063 Decent1.2 m (1.0 swell)11 sNW29 km/h W442.5 m dry12°chest-high 1.2 m, period 11 s, cross-shore wind
21:0066 Decent1.2 m (1.0 swell)11 sNW25 km/h W432.9 m dry12°chest-high 1.2 m, period 11 s, cross-shore wind
22:0061 Fresh1.2 m (1.0 swell)11 sNW28 km/h W423.1 m ▲dry12°chest-high 1.2 m, period 11 s, onshore wind
23:0062 Decent1.2 m (1.0 swell)11 sNW27 km/h W403.2 m ▲dry12°chest-high 1.2 m, period 11 s, onshore wind
Saturday, 3 October
00:0066 Decent1.2 m (0.9 swell)11 sNW26 km/h W393.0 m dry12°chest-high 1.2 m, period 11 s, cross-shore wind
01:0063 Decent1.2 m (0.9 swell)11 sNW24 km/h W372.6 m dry12°chest-high 1.2 m, period 11 s, cross-shore wind
02:0059 Fresh1.2 m (0.9 swell)11 sNW24 km/h WSW362.1 m dry12°chest-high 1.2 m, period 11 s, cross-shore wind
03:0056 Fresh1.2 m (0.9 swell)11 sNW23 km/h WSW351.6 m dry12°chest-high 1.2 m, period 11 s, cross-shore wind
04:0052 Fresh1.2 m (0.9 swell)11 sNW24 km/h WSW361.3 m ▼dry13°chest-high 1.2 m, period 11 s, cross-shore wind
05:0053 Fresh1.2 m (0.9 swell)11 sNW24 km/h WSW381.3 m ▼dry12°chest-high 1.2 m, period 11 s, cross-shore wind
06:0056 Fresh1.2 m (0.8 swell)11 sNW24 km/h WSW391.5 m 0.1 mm12°chest-high 1.2 m, period 10 s, cross-shore wind
07:0059 Fresh1.2 m (0.8 swell)10 sNW25 km/h WSW391.9 m dry13°chest-high 1.2 m, period 10 s, cross-shore wind
08:0062 Decent1.1 m (0.8 swell)10 sNW23 km/h WSW362.4 m dry13°chest-high 1.2 m, period 10 s, cross-shore wind
09:0065 Decent1.1 m (0.8 swell)10 sNW21 km/h WSW332.8 m dry13°chest-high 1.1 m, period 10 s, cross-shore wind
10:0068 Decent1.1 m (0.8 swell)10 sNW23 km/h WSW333.1 m ▲dry14°chest-high 1.1 m, period 10 s, cross-shore wind
11:0071 Decent1.1 m (0.7 swell)10 sNW22 km/h WSW343.3 m ▲dry14°chest-high 1.1 m, period 10 s, cross-shore wind
12:0068 Decent1.1 m (0.7 swell)10 sNW22 km/h SW363.2 m ▲dry14°chest-high 1.1 m, period 10 s, cross-shore wind
13:0065 Decent1.1 m (0.7 swell)10 sWNW24 km/h SW373.0 m dry14°chest-high 1.1 m, period 10 s, cross-shore wind
14:0062 Decent1.1 m (0.7 swell)10 sWNW25 km/h SW392.5 m dry14°chest-high 1.1 m, period 10 s, cross-shore wind
15:0059 Fresh1.1 m (0.7 swell)10 sWNW25 km/h SW402.1 m dry15°chest-high 1.1 m, period 10 s, cross-shore wind
16:0056 Fresh1.1 m (0.7 swell)10 sWNW24 km/h SW401.7 m dry15°chest-high 1.1 m, period 10 s, cross-shore wind
17:0053 Fresh1.1 m (0.7 swell)10 sWNW21 km/h SSW401.5 m ▼dry15°chest-high 1.1 m, period 10 s, cross-shore wind
18:0052 Fresh1.1 m (0.7 swell)10 sWNW21 km/h SSW401.4 m ▼dry14°chest-high 1.1 m, period 10 s, cross-shore wind
19:0055 Fresh1.1 m (0.7 swell)10 sWNW19 km/h SSW411.6 m dry14°chest-high 1.1 m, period 10 s, cross-shore wind
20:0059 Fresh1.1 m (0.8 swell)10 sWNW26 km/h SSW441.9 m dry14°chest-high 1.1 m, period 10 s, cross-shore wind
21:0062 Decent1.1 m (0.8 swell)10 sWNW27 km/h SSW482.2 m dry14°chest-high 1.1 m, period 10 s, cross-shore wind
22:0065 Decent1.2 m (0.8 swell)10 sWNW27 km/h SSW502.6 m dry13°chest-high 1.2 m, period 10 s, cross-shore wind
23:0068 Decent1.2 m (0.8 swell)10 sWNW30 km/h S522.8 m ▲dry14°chest-high 1.2 m, period 10 s, cross-shore wind
Sunday, 4 October
00:0070 Decent1.2 m (0.8 swell)10 sWNW30 km/h S542.9 m ▲0.1 mm14°chest-high 1.2 m, period 10 s, cross-shore wind
01:0062 Decent1.2 m (0.8 swell)10 sWNW31 km/h SSW552.9 m 0.1 mm14°chest-high 1.2 m, period 10 s, cross-shore wind
02:0059 Fresh1.2 m (0.8 swell)10 sWNW32 km/h S562.6 m 0.1 mm14°chest-high 1.2 m, period 10 s, cross-shore wind
03:0043 Blowy1.2 m (0.8 swell)10 sWNW33 km/h SSW572.2 m 0.1 mm14°chest-high 1.2 m, period 10 s, cross-shore wind
04:0040 Blowy1.2 m (0.8 swell)10 sWNW33 km/h SSW571.8 m 0.2 mm15°chest-high 1.2 m, period 10 s, cross-shore wind
05:0036 Blowy1.2 m (0.8 swell)10 sWNW35 km/h SSW571.6 m ▼0.2 mm15°chest-high 1.2 m, period 10 s, cross-shore wind
06:0035 Blowy1.2 m (0.8 swell)10 sWNW32 km/h SSW571.5 m ▼0.2 mm15°chest-high 1.2 m, period 10 s, cross-shore wind
07:0050 Fresh1.2 m (0.8 swell)10 sWNW32 km/h SSW561.6 m ▼0.2 mm15°chest-high 1.2 m, period 10 s, cross-shore wind
08:0046 Fresh1.2 m (0.8 swell)10 sWNW35 km/h SW481.9 m 0.1 mm15°chest-high 1.2 m, period 10 s, cross-shore wind
09:0049 Fresh1.2 m (0.8 swell)10 sWNW35 km/h SW482.2 m 0.1 mm15°chest-high 1.2 m, period 10 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
03:3510:0016:1022:35
Low 03:35 · 1.0 mHigh 10:00 · 3.5 mLow 16:10 · 1.2 mHigh 22:35 · 3.2 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 · Grand · sea 15° · 1.3 mFri, 2 Oct 09:30–10:30 · chest-high 1.3 m, period 12 s, offshore wind
🏄 Portarthur, Derrybeg surf · Decent · sea 15° · 1.1 mSat, 3 Oct 10:30–11:30 · chest-high 1.1 m, period 10 s, cross-shore wind
🏄 Portarthur, Derrybeg surf · Decent · sea 15° · 1.2 mSun, 4 Oct 10:30–11:30 · chest-high 1.2 m, period 10 s, cross-shore wind

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.