Dipper › Co. Roscommon

Lough O Donnellan

Monitored, not designated

🌊 Dip🏄 Surf
Any tidePrefer highPrefer low
Not an EPA-monitored bathing water. This lake comes from OpenStreetMap. There is no water-quality testing, no bathing notices and no facilities information here; the score is weather and daylight only. Check locally for blue-green algae warnings before you swim.
Surf score now
0
Grim · no wave data here
Wind
23 km/h
Moderate breeze, SSW, gusts 57
Daylight
07:35
Sunrise. Sunset 19:08. Air 15°C.

Best surf each day

Daylight hours, preferring high tide
Today
14:00
Grim 0/100
no wave data here · 23 km/h
☀ 07:35–19:08
Sat, 3 Oct
08:00
Grim 0/100
no wave data here · 7 km/h
☀ 07:37–19:06
Sun, 4 Oct
08:00
Grim 0/100
no wave data here · 15 km/h
☀ 07:39–19:03
Mon, 5 Oct
08:00
Grim 0/100
no wave data here · 21 km/h
☀ 07:41–19:01
Tue, 6 Oct
10:00
Grim 0/100
no wave data here · 14 km/h
☀ 07:43–18:59
Wed, 7 Oct
10:00
Grim 0/100
no wave data here · 11 km/h
☀ 07:44–18:56
Thu, 8 Oct
13:00
Grim 0/100
no wave data here · 10 km/h
☀ 07:46–18:54

Week at a glance

Tap or drag to pick an hour. Everything below follows.
Fri 14:000 · Grimno wave data here
Fri 2Sat 3Sun 4Mon 5Tue 6Wed 7Thu 80003060912151821Fri 13:00 · 0 GrimFri 14:00 · 0 GrimFri 15:00 · 0 GrimFri 16:00 · 0 GrimFri 17:00 · 0 GrimFri 18:00 · 0 GrimFri 19:00 · 0 GrimFri 20:00 · 0 Grim · nightFri 21:00 · 0 Grim · nightFri 22:00 · 0 Grim · nightFri 23:00 · 0 Grim · nightSat 00:00 · 0 Grim · nightSat 01:00 · 0 Grim · nightSat 02:00 · 0 Grim · nightSat 03:00 · 0 Grim · nightSat 04:00 · 0 Grim · nightSat 05:00 · 0 Grim · nightSat 06:00 · 0 Grim · nightSat 07:00 · 0 Grim · nightSat 08:00 · 0 GrimSat 09:00 · 0 GrimSat 10:00 · 0 GrimSat 11:00 · 0 GrimSat 12:00 · 0 GrimSat 13:00 · 0 GrimSat 14:00 · 0 GrimSat 15:00 · 0 GrimSat 16:00 · 0 GrimSat 17:00 · 0 GrimSat 18:00 · 0 GrimSat 19:00 · 0 GrimSat 20:00 · 0 Grim · nightSat 21:00 · 0 Grim · nightSat 22:00 · 0 Grim · nightSat 23:00 · 0 Grim · nightSun 00:00 · 0 Grim · nightSun 01:00 · 0 Grim · nightSun 02:00 · 0 Grim · nightSun 03:00 · 0 Grim · nightSun 04:00 · 0 Grim · nightSun 05:00 · 0 Grim · nightSun 06:00 · 0 Grim · nightSun 07:00 · 0 Grim · nightSun 08:00 · 0 GrimSun 09:00 · 0 GrimSun 10:00 · 0 GrimSun 11:00 · 0 GrimSun 12:00 · 0 GrimSun 13:00 · 0 GrimSun 14:00 · 0 GrimSun 15:00 · 0 GrimSun 16:00 · 0 GrimSun 17:00 · 0 GrimSun 18:00 · 0 GrimSun 19:00 · 0 GrimSun 20:00 · 0 Grim · nightSun 21:00 · 0 Grim · nightSun 22:00 · 0 Grim · nightSun 23:00 · 0 Grim · nightMon 00:00 · 0 Grim · nightMon 01:00 · 0 Grim · nightMon 02:00 · 0 Grim · nightMon 03:00 · 0 Grim · nightMon 04:00 · 0 Grim · nightMon 05:00 · 0 Grim · nightMon 06:00 · 0 Grim · nightMon 07:00 · 0 Grim · nightMon 08:00 · 0 GrimMon 09:00 · 0 GrimMon 10:00 · 0 GrimMon 11:00 · 0 GrimMon 12:00 · 0 GrimMon 13:00 · 0 GrimMon 14:00 · 0 GrimMon 15:00 · 0 GrimMon 16:00 · 0 GrimMon 17:00 · 0 GrimMon 18:00 · 0 GrimMon 19:00 · 0 GrimMon 22:00 · 0 Grim · nightTue 01:00 · 0 Grim · nightTue 04:00 · 0 Grim · nightTue 07:00 · 0 Grim · nightTue 10:00 · 0 GrimTue 13:00 · 0 GrimTue 16:00 · 0 GrimTue 19:00 · 0 GrimTue 22:00 · 0 Grim · nightWed 01:00 · 0 Grim · nightWed 04:00 · 0 Grim · nightWed 07:00 · 0 Grim · nightWed 10:00 · 0 GrimWed 13:00 · 0 GrimWed 16:00 · 0 GrimWed 19:00 · 0 GrimWed 22:00 · 0 Grim · nightThu 01:00 · 0 Grim · nightThu 07:00 · 0 Grim · nightThu 13:00 · 0 GrimThu 19:00 · 0 Grim

Fri, 2 Oct, 14:00

0 Grim
  • no wave data here
NESWsunrisesunset23 km/h
facing unknown
Waves
–
Wind
23 km/h SSW · gusts 57
Tide
–
Air
15°C · 5.1 mm rain

Meteogram

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

Hour by hour

Next 48 hours
TimeSurfWavesPeriodFromWindGustTideRainAirWhy
Today
14:000 Grim–––23 km/h SSW57–5.1 mm15°no wave data here
15:000 Grim–––31 km/h SW51–1.8 mm15°no wave data here
16:000 Grim–––14 km/h WSW41–dry15°no wave data here
17:000 Grim–––19 km/h W37–dry14°no wave data here
18:000 Grim–––22 km/h W36–dry13°no wave data here
19:000 Grim–––15 km/h WSW33–dry12°no wave data here
20:000 Grim–––12 km/h WSW25–dry10°no wave data here
21:000 Grim–––12 km/h WSW22–dry9°no wave data here
22:000 Grim–––10 km/h SW20–dry8°no wave data here
23:000 Grim–––11 km/h SW19–dry6°no wave data here
Saturday, 3 October
00:000 Grim–––10 km/h WSW18–dry6°no wave data here
01:000 Grim–––9 km/h SW17–dry5°no wave data here
02:000 Grim–––8 km/h SW16–dry5°no wave data here
03:000 Grim–––8 km/h SW15–dry5°no wave data here
04:000 Grim–––7 km/h SSW14–dry5°no wave data here
05:000 Grim–––6 km/h SSW14–dry6°no wave data here
06:000 Grim–––7 km/h SW13–dry6°no wave data here
07:000 Grim–––7 km/h SSW13–dry6°no wave data here
08:000 Grim–––7 km/h SSW13–dry5°no wave data here
09:000 Grim–––6 km/h SSW14–dry7°no wave data here
10:000 Grim–––8 km/h SSW17–dry10°no wave data here
11:000 Grim–––9 km/h SW19–dry13°no wave data here
12:000 Grim–––10 km/h WSW22–dry14°no wave data here
13:000 Grim–––9 km/h WSW23–dry15°no wave data here
14:000 Grim–––8 km/h SW24–dry16°no wave data here
15:000 Grim–––10 km/h SSW27–dry16°no wave data here
16:000 Grim–––11 km/h SSW28–dry16°no wave data here
17:000 Grim–––12 km/h SW28–dry16°no wave data here
18:000 Grim–––9 km/h SSW25–dry15°no wave data here
19:000 Grim–––8 km/h S19–dry13°no wave data here
20:000 Grim–––6 km/h S16–dry11°no wave data here
21:000 Grim–––6 km/h S18–dry10°no wave data here
22:000 Grim–––8 km/h SSW21–dry10°no wave data here
23:000 Grim–––13 km/h SSW25–dry10°no wave data here
Sunday, 4 October
00:000 Grim–––13 km/h SSW28–dry10°no wave data here
01:000 Grim–––13 km/h SSW30–dry10°no wave data here
02:000 Grim–––15 km/h S31–dry10°no wave data here
03:000 Grim–––13 km/h S32–dry10°no wave data here
04:000 Grim–––11 km/h S33–dry10°no wave data here
05:000 Grim–––10 km/h S34–dry10°no wave data here
06:000 Grim–––10 km/h S35–0.1 mm11°no wave data here
07:000 Grim–––14 km/h SW35–0.1 mm12°no wave data here
08:000 Grim–––15 km/h SSW36–0.1 mm13°no wave data here
09:000 Grim–––17 km/h SSW36–0.1 mm13°no wave data here
10:000 Grim–––18 km/h SSW37–0.1 mm14°no wave data here
11:000 Grim–––22 km/h SSW38–0.1 mm14°no wave data here
12:000 Grim–––23 km/h SW39–0.1 mm14°no wave data here
13:000 Grim–––22 km/h SW39–0.1 mm15°no wave data here

The spot

Faces
Unknown (inland)
Swell window
None (sheltered)
Exposure
Lake
Water
Not classified

Lakes have no tide or swell; the score is wind, rain, air temperature and daylight. Know better? Tell us.

Getting there

Open in Maps · OpenStreetMap

Access, parking and swimming areas are not recorded for this lake. Respect private land.

Sauna after?

Cavetown Lake Sauna · Cavetown Lough, near Croghan · 10 km · fixed

Lough Allen Adventure Sauna · Lough Allen Adventure Centre, Ballinaglera, Co. Leitrim · 34 km · fixed

Put Lough O Donnellan 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
🏄 Lough O Donnellan surf · GrimFri, 2 Oct 13:30–14:30 · no wave data here
🏄 Lough O Donnellan surf · GrimSat, 3 Oct 07:30–08:30 · no wave data here
🏄 Lough O Donnellan surf · GrimSun, 4 Oct 07:30–08:30 · no wave data here

Nearby spots

Lough Nahincha

0 km · Co. Roscommon · Not classified

Loughanammer

1 km · Co. Roscommon · Not classified

Simon's Lough

1 km · Co. Roscommon · Not classified

Killynagh Lough

1 km · Co. Roscommon · Not classified

Score is Dipper's own blend. It rates comfort, not safety. Forecast: Met Éireann. Lake data: © OpenStreetMap contributors.