Dipper › Co. Galway

Knockboy Lough

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.
Dip score now
86
Grand · gentle breeze, dry
Wind
13 km/h
Gentle breeze, W, gusts 24
Daylight
07:43
Sunrise. Sunset 19:13. Air 10°C.

Best dip each day

Daylight hours, preferring low tide
Today
10:00
Grand 100/100
light winds, dry, sunny · 5 km/h
☀ 07:43–19:13
Sun, 4 Oct
08:00
Grand 84/100
moderate breeze, dry · 22 km/h
☀ 07:45–19:10
Mon, 5 Oct
19:00
Grand 94/100
gentle breeze, dry · 19 km/h
☀ 07:47–19:08
Tue, 6 Oct
13:00
Grand 94/100
gentle breeze, dry · 16 km/h
☀ 07:49–19:06
Wed, 7 Oct
10:00
Grand 91/100
gentle breeze, dry · 17 km/h
☀ 07:50–19:03
Thu, 8 Oct
13:00
Grand 92/100
light winds, showers possible · 11 km/h
☀ 07:52–19:01
Fri, 9 Oct
19:00
Fresh 51/100
fresh breeze, rain · 30 km/h
☀ 07:54–18:58

Week at a glance

Tap or drag to pick an hour. Everything below follows.
Sat 00:0086 · Grandgentle breeze · dry
Sat 3Sun 4Mon 5Tue 6Wed 7Thu 8Fri 90003060912151821Sat 00:00 · 86 Grand · nightSat 01:00 · 91 Grand · nightSat 02:00 · 91 Grand · nightSat 03:00 · 92 Grand · nightSat 04:00 · 91 Grand · nightSat 05:00 · 91 Grand · nightSat 06:00 · 97 Grand · nightSat 07:00 · 97 Grand · nightSat 08:00 · 97 GrandSat 09:00 · 97 GrandSat 10:00 · 100 GrandSat 11:00 · 100 GrandSat 12:00 · 100 GrandSat 13:00 · 100 GrandSat 14:00 · 94 GrandSat 15:00 · 94 GrandSat 16:00 · 94 GrandSat 17:00 · 94 GrandSat 18:00 · 100 GrandSat 19:00 · 97 GrandSat 20:00 · 97 Grand · nightSat 21:00 · 97 Grand · nightSat 22:00 · 97 Grand · nightSat 23:00 · 94 Grand · nightSun 00:00 · 94 Grand · nightSun 01:00 · 84 Grand · nightSun 02:00 · 84 Grand · nightSun 03:00 · 84 Grand · nightSun 04:00 · 84 Grand · nightSun 05:00 · 84 Grand · nightSun 06:00 · 84 Grand · nightSun 07:00 · 84 Grand · nightSun 08:00 · 84 GrandSun 09:00 · 84 GrandSun 10:00 · 84 GrandSun 11:00 · 68 DecentSun 12:00 · 68 DecentSun 13:00 · 68 DecentSun 14:00 · 84 GrandSun 15:00 · 84 GrandSun 16:00 · 84 GrandSun 17:00 · 84 GrandSun 18:00 · 84 GrandSun 19:00 · 84 GrandSun 20:00 · 84 Grand · nightSun 21:00 · 84 Grand · nightSun 22:00 · 84 Grand · nightSun 23:00 · 84 Grand · nightMon 00:00 · 84 Grand · nightMon 01:00 · 76 Decent · nightMon 02:00 · 84 Grand · nightMon 03:00 · 84 Grand · nightMon 04:00 · 84 Grand · nightMon 05:00 · 73 Decent · nightMon 06:00 · 84 Grand · nightMon 07:00 · 84 Grand · nightMon 08:00 · 84 GrandMon 09:00 · 84 GrandMon 10:00 · 84 GrandMon 11:00 · 84 GrandMon 12:00 · 84 GrandMon 13:00 · 84 GrandMon 14:00 · 84 GrandMon 15:00 · 84 GrandMon 16:00 · 84 GrandMon 17:00 · 84 GrandMon 18:00 · 84 GrandMon 19:00 · 94 GrandMon 22:00 · 86 Grand · nightTue 01:00 · 86 Grand · nightTue 04:00 · 80 Grand · nightTue 07:00 · 86 Grand · nightTue 10:00 · 83 GrandTue 13:00 · 94 GrandTue 16:00 · 94 GrandTue 19:00 · 91 GrandTue 22:00 · 91 Grand · nightWed 01:00 · 97 Grand · nightWed 04:00 · 92 Grand · nightWed 07:00 · 92 Grand · nightWed 10:00 · 91 GrandWed 13:00 · 81 GrandWed 16:00 · 81 GrandWed 19:00 · 91 GrandWed 22:00 · 91 Grand · nightThu 01:00 · 91 Grand · nightThu 07:00 · 91 Grand · nightThu 13:00 · 92 GrandThu 19:00 · 60 FreshFri 01:00 · 49 Fresh · nightFri 07:00 · 35 Blowy · nightFri 13:00 · 44 BlowyFri 19:00 · 51 Fresh

Sat, 3 Oct, 00:00

86 Grand
  • gentle breeze
  • dry
NESWsunrisesunset13 km/h
facing unknown
Waves
–
Wind
13 km/h W · gusts 24
Tide
–
Air
10°C · dry

Meteogram

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

Hour by hour

Next 48 hours
TimeDipWavesPeriodFromWindGustTideRainAirWhy
Today
00:0086 Grand–––13 km/h W24–dry10°gentle breeze, dry
01:0091 Grand–––14 km/h W23–dry10°gentle breeze, dry
02:0091 Grand–––14 km/h WSW22–dry10°gentle breeze, dry
03:0092 Grand–––10 km/h WSW23–dry10°light winds, dry
04:0091 Grand–––13 km/h WSW23–dry11°gentle breeze, dry
05:0091 Grand–––13 km/h W22–dry12°gentle breeze, dry
06:0097 Grand–––11 km/h WSW20–dry11°light winds, dry
07:0097 Grand–––9 km/h WSW17–dry11°light winds, dry
08:0097 Grand–––9 km/h W15–dry12°light winds, dry
09:0097 Grand–––4 km/h WNW14–dry11°light winds, dry
10:00100 Grand–––5 km/h SW16–dry13°light winds, dry, sunny
11:00100 Grand–––9 km/h SW21–dry14°light winds, dry, sunny
12:00100 Grand–––11 km/h SSW23–dry15°light winds, dry
13:00100 Grand–––12 km/h SSW25–dry15°light winds, dry
14:0094 Grand–––14 km/h SSW27–dry15°gentle breeze, dry
15:0094 Grand–––14 km/h SSW30–dry15°gentle breeze, dry
16:0094 Grand–––14 km/h SSW31–dry14°gentle breeze, dry
17:0094 Grand–––14 km/h SSW31–dry14°gentle breeze, dry
18:00100 Grand–––12 km/h SSW30–dry14°light winds, dry
19:0097 Grand–––10 km/h SSW28–dry12°light winds, dry
20:0097 Grand–––10 km/h S29–dry12°light winds, dry
21:0097 Grand–––11 km/h S32–dry12°light winds, dry
22:0097 Grand–––10 km/h S36–dry13°light winds, dry
23:0094 Grand–––14 km/h S41–dry14°gentle breeze, dry
Sunday, 4 October
00:0094 Grand–––17 km/h S45–dry14°gentle breeze, dry
01:0084 Grand–––24 km/h SSW47–dry14°moderate breeze, dry
02:0084 Grand–––23 km/h SSW48–dry15°moderate breeze, dry
03:0084 Grand–––22 km/h SSW48–dry15°moderate breeze, dry
04:0084 Grand–––21 km/h SSW48–dry15°moderate breeze, dry
05:0084 Grand–––23 km/h SW48–0.1 mm15°moderate breeze, dry
06:0084 Grand–––24 km/h SW48–0.1 mm15°moderate breeze, dry
07:0084 Grand–––23 km/h SW48–dry15°moderate breeze, dry
08:0084 Grand–––22 km/h SW48–dry15°moderate breeze, dry
09:0084 Grand–––24 km/h SW47–0.1 mm15°moderate breeze, dry
10:0084 Grand–––25 km/h SW47–0.1 mm15°moderate breeze, dry
11:0068 Decent–––29 km/h SW47–dry15°fresh breeze, dry
12:0068 Decent–––29 km/h SW47–0.1 mm15°fresh breeze, dry
13:0068 Decent–––29 km/h SW47–0.1 mm15°fresh breeze, dry
14:0084 Grand–––28 km/h SW48–0.1 mm15°moderate breeze, dry
15:0084 Grand–––28 km/h SW48–0.1 mm15°moderate breeze, dry
16:0084 Grand–––25 km/h SW47–dry15°moderate breeze, dry
17:0084 Grand–––24 km/h SW46–dry15°moderate breeze, dry
18:0084 Grand–––23 km/h SW45–dry15°moderate breeze, dry
19:0084 Grand–––26 km/h SW44–dry15°moderate breeze, dry
20:0084 Grand–––26 km/h WSW41–dry15°moderate breeze, dry
21:0084 Grand–––23 km/h WSW41–0.1 mm15°moderate breeze, dry
22:0084 Grand–––24 km/h SW40–dry15°moderate breeze, dry
23:0084 Grand–––27 km/h SW42–dry15°moderate breeze, dry

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?

Oileanra Seaweed Baths and Sauna · Cuigeal, Lettermullan · 14 km · fixed

Cois Tra Rugged Retreat · Connemara Sands Hotel, Mannin Bay, Ballyconneely · 19 km · fixed

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

Put Knockboy Lough 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
🌊 Knockboy Lough dip · GrandSat, 3 Oct 09:30–10:30 · light winds, dry, sunny
🌊 Knockboy Lough dip · GrandSun, 4 Oct 07:30–08:30 · moderate breeze, dry
🌊 Knockboy Lough dip · GrandMon, 5 Oct 18:30–19:30 · gentle breeze, dry

Nearby spots

Lough Bola

1 km · Co. Galway · Not classified

Black Lough

1 km · Co. Galway · Not classified

Loch Throiscín

1 km · Co. Galway · Not classified

Loch na nÉan

1 km · Co. Galway · Not classified

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