Dipper › Co. Mayo

Bertra Beach, Murrisk

Excellent Quality 2025 Blue Flag faces WNW

🌊 Dip🏄 Surf
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Surf score now
5
Grim · flat
Waves
0.3 m
12 s period from WNW · model cell 1.7 km out
Sea
15.2°
Grand. M2 buoy, Irish Sea east of Dublin, 281 km away.
Tide
2.3 m
Rising. High at 09:40.
Wind
23 km/h
Moderate breeze, SSW, cross, gusts 37
Daylight
07:41
Sunrise. Sunset 19:14. Air 15°C.

Best surf each day

Daylight hours
Today
08:00
Grim 5/100
flat · 0.3 m · 29 km/h
▼ 03:10 ▲ 09:40 ▼ 15:50 ▲ 22:20
Sat, 3 Oct
08:00
Grim 5/100
flat · 0.2 m · 14 km/h
▼ 04:10 ▲ 10:45 ▼ 17:05 ▲ 23:45
Sun, 4 Oct
08:00
Grim 5/100
flat · 0.2 m · 23 km/h
▼ 05:30 ▲ 12:05 ▼ 19:00
Mon, 5 Oct
10:00
Grim 5/100
flat · 0.2 m · 23 km/h
▲ 01:15 ▼ 07:20 ▲ 13:40 ▼ 20:30
Tue, 6 Oct
10:00
Grim 5/100
flat · 0.2 m · 17 km/h
▲ 02:55 ▼ 08:50 ▲ 15:00 ▼ 21:30
Wed, 7 Oct
10:00
Grim 0/100
no wave data here · 16 km/h
▲ 03:50 ▼ 09:50 ▲ 15:55 ▼ 22:25
Thu, 8 Oct
13:00
Grim 0/100
no wave data here · 13 km/h
▲ 04:35 ▼ 10:30 ▲ 16:40 ▼ 23:05

Week at a glance

Tap or drag to pick an hour. Everything below follows.
Fri 06:005 · Grimflat
Fri 2Sat 3Sun 4Mon 5Tue 6Wed 7Thu 80003060912151821Fri 01:00 · 27 Grim · nightFri 02:00 · 5 Grim · nightFri 03:00 · 5 Grim · nightFri 04:00 · 5 Grim · nightFri 05:00 · 5 Grim · nightFri 06:00 · 5 Grim · nightFri 07:00 · 5 Grim · nightFri 08:00 · 5 GrimFri 09:00 · 5 GrimFri 10:00 · 5 GrimFri 11:00 · 5 GrimFri 12:00 · 5 GrimFri 13:00 · 5 GrimFri 14:00 · 5 GrimFri 15:00 · 5 GrimFri 16:00 · 5 GrimFri 17:00 · 5 GrimFri 18:00 · 5 GrimFri 19:00 · 5 GrimFri 20:00 · 5 Grim · nightFri 21:00 · 5 Grim · nightFri 22:00 · 5 Grim · nightFri 23:00 · 5 Grim · nightSat 00:00 · 5 Grim · nightSat 01:00 · 5 Grim · nightSat 02:00 · 5 Grim · nightSat 03:00 · 5 Grim · nightSat 04:00 · 5 Grim · nightSat 05:00 · 5 Grim · nightSat 06:00 · 5 Grim · nightSat 07:00 · 5 Grim · nightSat 08:00 · 5 GrimSat 09:00 · 5 GrimSat 10:00 · 5 GrimSat 11:00 · 5 GrimSat 12:00 · 5 GrimSat 13:00 · 5 GrimSat 14:00 · 5 GrimSat 15:00 · 5 GrimSat 16:00 · 5 GrimSat 17:00 · 5 GrimSat 18:00 · 5 GrimSat 19:00 · 5 GrimSat 20:00 · 5 Grim · nightSat 21:00 · 5 Grim · nightSat 22:00 · 5 Grim · nightSat 23:00 · 5 Grim · nightSun 00:00 · 5 Grim · nightSun 01:00 · 5 Grim · nightSun 02:00 · 5 Grim · nightSun 03:00 · 5 Grim · nightSun 04:00 · 5 Grim · nightSun 05:00 · 5 Grim · nightSun 06:00 · 5 Grim · nightSun 07:00 · 5 Grim · nightSun 08:00 · 5 GrimSun 09:00 · 5 GrimSun 10:00 · 5 GrimSun 11:00 · 5 GrimSun 12:00 · 5 GrimSun 13:00 · 5 GrimSun 14:00 · 5 GrimSun 15:00 · 5 GrimSun 16:00 · 5 GrimSun 17:00 · 5 GrimSun 18:00 · 5 GrimSun 19:00 · 5 GrimSun 20:00 · 5 Grim · nightSun 21:00 · 5 Grim · nightSun 22:00 · 5 Grim · nightSun 23:00 · 5 Grim · nightMon 00:00 · 5 Grim · nightMon 01:00 · 5 Grim · nightMon 02:00 · 5 Grim · nightMon 03:00 · 5 Grim · nightMon 04:00 · 5 Grim · nightMon 05:00 · 5 Grim · nightMon 06:00 · 5 Grim · nightMon 07:00 · 5 Grim · nightMon 10:00 · 5 GrimMon 13:00 · 5 GrimMon 16:00 · 5 GrimMon 19:00 · 5 GrimMon 22:00 · 5 Grim · nightTue 01:00 · 5 Grim · nightTue 04:00 · 5 Grim · nightTue 07:00 · 5 Grim · nightTue 10:00 · 5 GrimTue 13:00 · 5 GrimTue 16:00 · 5 GrimTue 19:00 · 5 GrimTue 22:00 · 5 Grim · nightWed 01:00 · 5 Grim · 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, 06:00

5 Grim
  • flat
  • cross wind
NESWsunrisesunset0.3 m23 km/h
faces 297° WNW · wind cross
Waves
0.3 m @ 12 s from WNW
Wind
23 km/h SSW · gusts 37
Tide
2.2 m · lower half
Air
15°C · 0.1 mm rain

Meteogram

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

Hour by hour

Next 48 hours
TimeSurfWavesPeriodFromWindGustTideRainAirWhy
Today
06:005 Grim0.3 m (0.2 swell)12 sWNW23 km/h SSW372.2 m 0.1 mm15°flat
07:005 Grim0.3 m (0.2 swell)12 sWNW27 km/h SSW412.8 m 0.6 mm15°flat
08:005 Grim0.3 m12 sWNW29 km/h SSW463.4 m 1.1 mm15°flat
09:005 Grim0.3 m12 sWNW26 km/h SSW493.8 m ▲2.2 mm15°flat
10:005 Grim0.3 m12 sWNW31 km/h SSW533.9 m ▲3.6 mm15°flat
11:005 Grim0.3 m12 sWNW20 km/h SW543.7 m 3.3 mm13°flat
12:005 Grim0.3 m12 sWNW23 km/h SW473.1 m 2.3 mm13°flat
13:005 Grim0.3 m12 sWNW27 km/h SSW422.5 m 0.5 mm14°flat
14:005 Grim0.2 m11 sWNW27 km/h W411.9 m 0.1 mm15°flat
15:005 Grim0.2 m11 sWNW28 km/h W391.4 m ▼dry14°flat
16:005 Grim0.2 m11 sWNW27 km/h W401.3 m ▼dry14°flat
17:005 Grim0.3 m11 sWNW29 km/h W411.4 m ▼dry14°flat
18:005 Grim0.3 m11 sWNW29 km/h W401.8 m dry13°flat
19:005 Grim0.3 m11 sWNW27 km/h W372.3 m dry13°flat
20:005 Grim0.3 m11 sWNW25 km/h W332.8 m dry13°flat
21:005 Grim0.3 m11 sWNW22 km/h W303.3 m dry12°flat
22:005 Grim0.3 m11 sWNW18 km/h W273.6 m ▲dry12°flat
23:005 Grim0.2 m11 sWNW16 km/h WSW243.6 m ▲dry12°flat
Saturday, 3 October
00:005 Grim0.2 m11 sWNW16 km/h SW243.3 m dry11°flat
01:005 Grim0.2 m11 sWNW17 km/h SW242.8 m dry11°flat
02:005 Grim0.2 m11 sWNW16 km/h SW242.2 m dry12°flat
03:005 Grim0.2 m11 sWNW20 km/h SW231.8 m dry12°flat
04:005 Grim0.2 m10 sWNW19 km/h SW231.6 m ▼dry12°flat
05:005 Grim0.2 m10 sWNW15 km/h SW221.6 m ▼dry12°flat
06:005 Grim0.2 m10 sWNW13 km/h SW211.9 m dry12°flat
07:005 Grim0.2 m10 sWNW13 km/h SSW192.3 m dry11°flat
08:005 Grim0.2 m10 sWNW14 km/h SSW182.8 m dry11°flat
09:005 Grim0.2 m10 sWNW15 km/h SW173.2 m dry12°flat
10:005 Grim0.2 m10 sWNW13 km/h SW183.5 m ▲dry14°flat
11:005 Grim0.2 m10 sWNW14 km/h SW213.6 m ▲dry14°flat
12:005 Grim0.2 m10 sWNW12 km/h SW223.5 m dry15°flat
13:005 Grim0.2 m10 sWNW14 km/h SSW243.1 m dry16°flat
14:005 Grim0.2 m10 sWNW16 km/h SSW272.6 m dry16°flat
15:005 Grim0.2 m10 sWNW17 km/h SSW282.1 m dry16°flat
16:005 Grim0.2 m10 sWNW20 km/h SSW301.7 m ▼dry15°flat
17:005 Grim0.2 m10 sWNW22 km/h SSW301.5 m ▼dry15°flat
18:005 Grim0.2 m10 sWNW26 km/h SSW301.6 m ▼dry15°flat
19:005 Grim0.2 m10 sWNW28 km/h SSW301.8 m dry15°flat
20:005 Grim0.2 m10 sWNW26 km/h SSW302.1 m dry15°flat
21:005 Grim0.2 m10 sWNW27 km/h SSW312.6 m dry16°flat
22:005 Grim0.2 m10 sWNW26 km/h SW343.0 m dry16°flat
23:005 Grim0.2 m10 sWNW28 km/h SW373.3 m ▲dry16°flat
Sunday, 4 October
00:005 Grim0.2 m10 sWNW32 km/h SSW393.3 m ▲dry16°flat
01:005 Grim0.2 m10 sWNW34 km/h SW413.2 m dry16°flat
02:005 Grim0.2 m10 sWNW23 km/h SW422.9 m 0.1 mm16°flat
03:005 Grim0.2 m10 sWNW24 km/h SW422.5 m 0.1 mm16°flat
04:005 Grim0.2 m10 sWNW24 km/h SW422.1 m 0.2 mm16°flat
05:005 Grim0.2 m10 sWNW24 km/h SW411.9 m ▼0.1 mm16°flat

Where the energy comes from

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

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

Tide today

Roonagh, 16 km away · metres above chart datum
03:1009:4015:5022:20
Low 03:10 · 1.2 mHigh 09:40 · 3.9 mLow 15:50 · 1.3 mHigh 22:20 · 3.6 m

The spot

Faces
297° WNW
Swell window
W 260° → N 350°
Exposure
Sheltered · model cell 1.7 km out
Water
Excellent Quality · Blue Flag

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 Excellent. The EPA flags a short-term pollution risk here after heavy rain.

Beach profile (PDF) · beaches.ie

On the ground

Lifeguard: YesToiletsParkingAccessible: YesDogs on lead (Dogs only allowed before 12pm and after 6.30pm during the bathing season (1st June to 15th September), otherwise allowed at all times onto beach.)

As listed by Mayo County Council. Open in Maps.

Sauna after?

The Wild Atlantic Sauna (Slainte Saunas) · Old Head Beach, Louisburgh · 7 km · fixed

Big Dipper Sauna · Carrowniskey Beach, BigStyle Atlantic Lodge, Louisburgh · 18 km · fixed

Sweathouse (Renvyle) · Gurteen Pier, Renvyle, Connemara, Co. Galway · 29 km · fixed

Bertra beach consists of a sandy dune area with the centre of the designated bathing area enclosed by caged stone. Bertra Beach is an exposed beach and can be subject to rip tides/strong currents. The sand dunes consist of embryonic dunes and marrram dunes both of which are listed under Annex I of the EU Habitats Directive. Restoration work on the sand dunes due to erosion has taken place over the last decade and has reduced the extent of the erosion. Bertra Beach forms part of the Clew Bay Complex (SAC & SPA) Site Code 001482. In close proximity to Old Head Beach is Old Head SAC/pNHA (Site Code 000532). Bertra Beach lies at the foot of Croagh Patrick. Activities include swimming, surfing, canoeing and angling. The bathing water is approximately 1km2 in area. The medium and the maximum water depth within the designated bathing area is 0.5m and 5.0m respectively depending on the tides.

Put Bertra Beach, Murrisk 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
🏄 Bertra Beach, Murrisk surf · Grim · sea 15° · 0.3 mFri, 2 Oct 07:30–08:30 · flat
🏄 Bertra Beach, Murrisk surf · Grim · sea 15° · 0.2 mSat, 3 Oct 07:30–08:30 · flat
🏄 Bertra Beach, Murrisk surf · Grim · sea 15° · 0.2 mSun, 4 Oct 07:30–08:30 · flat

Nearby spots

Parkmore Lough

2 km · Co. Mayo · Not classified

Annagh Lough

4 km · Co. Mayo · Not classified

Killadangan Lough

5 km · Co. Mayo · Not classified

Prospect Lough

5 km · Co. Mayo · Not classified

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