Coomnagrossaun Lake
Monitored, not designated
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
68
Decent · fresh breeze, dry
Wind
33 km/h
Fresh breeze, SSW, gusts 54
Daylight
07:41
Sunrise. Sunset 19:16. Air 13°C.
Best dip each day
Daylight hours, preferring high tideToday
18:00
Grand 91/100
gentle breeze, dry · 17 km/h
☀ 07:41–19:16
Sat, 3 Oct
12:00
Grand 94/100
gentle breeze, dry, sunny · 15 km/h
☀ 07:43–19:14
Sun, 4 Oct
08:00
Grand 94/100
gentle breeze, dry · 15 km/h
☀ 07:45–19:12
Mon, 5 Oct
10:00
Grand 86/100
gentle breeze, showers possible · 15 km/h
☀ 07:46–19:09
Tue, 6 Oct
19:00
Grand 91/100
gentle breeze, dry · 16 km/h
☀ 07:48–19:07
Wed, 7 Oct
10:00
Grand 91/100
gentle breeze, dry · 14 km/h
☀ 07:50–19:05
Thu, 8 Oct
13:00
Grand 91/100
gentle breeze, dry · 15 km/h
☀ 07:51–19:03
Week at a glance
Tap or drag to pick an hour. Everything below follows.Fri 08:0068 · Decent
Fri, 2 Oct, 08:00
68 Decent- fresh breeze
- dry
Waves
–
Wind
33 km/h SSW · gusts 54
Tide
–
Air
13°C · dry
Meteogram
Score, waves, wind (green offshore, amber cross, red onshore), rain and air, tideHour by hour
Next 48 hours| Time | Dip | Waves | Period | From | Wind | Gust | Tide | Rain | Air | Why |
|---|---|---|---|---|---|---|---|---|---|---|
| Today | ||||||||||
| 07:00 | 68 Decent | – | – | – | 35 km/h SSW | 50 | – | dry | 13° | fresh breeze, dry |
| 08:00 | 68 Decent | – | – | – | 33 km/h SSW | 54 | – | dry | 13° | fresh breeze, dry |
| 09:00 | 60 Fresh | – | – | – | 36 km/h SSW | 58 | – | dry | 14° | fresh breeze, dry |
| 10:00 | 36 Blowy | – | – | – | 42 km/h SSW | 64 | – | 0.2 mm | 14° | strong wind, showers possible |
| 11:00 | 36 Blowy | – | – | – | 41 km/h SSW | 67 | – | 0.5 mm | 14° | strong wind, showers possible |
| 12:00 | 20 Grim | – | – | – | 45 km/h SSW | 69 | – | 2.3 mm | 14° | strong wind, rain |
| 13:00 | 14 Grim | – | – | – | 44 km/h SW | 70 | – | 3.6 mm | 14° | strong wind, rain |
| 14:00 | 14 Grim | – | – | – | 46 km/h SSW | 64 | – | 3.7 mm | 14° | strong wind, rain |
| 15:00 | 66 Decent | – | – | – | 23 km/h W | 53 | – | 1.4 mm | 13° | moderate breeze, rain |
| 16:00 | 83 Grand | – | – | – | 19 km/h WNW | 42 | – | 0.2 mm | 13° | gentle breeze, showers possible |
| 17:00 | 81 Grand | – | – | – | 20 km/h WNW | 35 | – | dry | 13° | moderate breeze, dry, sunny |
| 18:00 | 91 Grand | – | – | – | 17 km/h WNW | 31 | – | dry | 12° | gentle breeze, dry |
| 19:00 | 91 Grand | – | – | – | 14 km/h WNW | 24 | – | dry | 11° | gentle breeze, dry, sunny |
| 20:00 | 92 Grand | – | – | – | 10 km/h W | 19 | – | dry | 9° | light winds, dry, sunny |
| 21:00 | 92 Grand | – | – | – | 10 km/h WSW | 14 | – | dry | 8° | light winds, dry |
| 22:00 | 92 Grand | – | – | – | 10 km/h WSW | 12 | – | dry | 8° | light winds, dry |
| 23:00 | 92 Grand | – | – | – | 12 km/h SW | 10 | – | dry | 8° | light winds, dry |
| Saturday, 3 October | ||||||||||
| 00:00 | 92 Grand | – | – | – | 12 km/h SW | 10 | – | dry | 8° | light winds, dry |
| 01:00 | 92 Grand | – | – | – | 11 km/h SW | 10 | – | dry | 8° | light winds, dry |
| 02:00 | 92 Grand | – | – | – | 11 km/h SW | 10 | – | dry | 8° | light winds, dry |
| 03:00 | 92 Grand | – | – | – | 10 km/h SW | 9 | – | dry | 8° | light winds, dry |
| 04:00 | 92 Grand | – | – | – | 10 km/h SSW | 9 | – | dry | 9° | light winds, dry |
| 05:00 | 92 Grand | – | – | – | 10 km/h SSW | 10 | – | dry | 9° | light winds, dry |
| 06:00 | 86 Grand | – | – | – | 13 km/h S | 11 | – | dry | 9° | gentle breeze, dry |
| 07:00 | 86 Grand | – | – | – | 14 km/h SSW | 12 | – | dry | 10° | gentle breeze, dry |
| 08:00 | 86 Grand | – | – | – | 16 km/h SSW | 13 | – | dry | 9° | gentle breeze, dry, sunny |
| 09:00 | 86 Grand | – | – | – | 17 km/h SSW | 14 | – | dry | 9° | gentle breeze, dry |
| 10:00 | 91 Grand | – | – | – | 16 km/h S | 16 | – | dry | 11° | gentle breeze, dry, sunny |
| 11:00 | 91 Grand | – | – | – | 17 km/h S | 19 | – | dry | 13° | gentle breeze, dry, sunny |
| 12:00 | 94 Grand | – | – | – | 15 km/h SSE | 22 | – | dry | 14° | gentle breeze, dry, sunny |
| 13:00 | 94 Grand | – | – | – | 18 km/h SSE | 25 | – | dry | 15° | gentle breeze, dry, sunny |
| 14:00 | 84 Grand | – | – | – | 23 km/h S | 28 | – | dry | 15° | moderate breeze, dry |
| 15:00 | 84 Grand | – | – | – | 27 km/h S | 30 | – | dry | 14° | moderate breeze, dry |
| 16:00 | 84 Grand | – | – | – | 28 km/h S | 32 | – | dry | 14° | moderate breeze, dry |
| 17:00 | 84 Grand | – | – | – | 25 km/h SSW | 31 | – | dry | 14° | moderate breeze, dry |
| 18:00 | 94 Grand | – | – | – | 18 km/h SSW | 30 | – | dry | 14° | gentle breeze, dry |
| 19:00 | 94 Grand | – | – | – | 15 km/h SSW | 28 | – | dry | 14° | gentle breeze, dry |
| 20:00 | 94 Grand | – | – | – | 17 km/h SW | 27 | – | dry | 14° | gentle breeze, dry |
| 21:00 | 84 Grand | – | – | – | 23 km/h SW | 28 | – | dry | 14° | moderate breeze, dry |
| 22:00 | 84 Grand | – | – | – | 26 km/h SW | 28 | – | dry | 14° | moderate breeze, dry |
| 23:00 | 68 Decent | – | – | – | 30 km/h SSW | 30 | – | dry | 14° | fresh breeze, dry |
| Sunday, 4 October | ||||||||||
| 00:00 | 68 Decent | – | – | – | 30 km/h SSW | 31 | – | dry | 14° | fresh breeze, dry |
| 01:00 | 68 Decent | – | – | – | 35 km/h SW | 32 | – | dry | 14° | fresh breeze, dry |
| 02:00 | 94 Grand | – | – | – | 13 km/h SSW | 28 | – | dry | 14° | gentle breeze, dry |
| 03:00 | 94 Grand | – | – | – | 14 km/h SSW | 29 | – | 0.1 mm | 14° | gentle breeze, dry |
| 04:00 | 94 Grand | – | – | – | 14 km/h SSW | 30 | – | 0.1 mm | 14° | gentle breeze, dry |
| 05:00 | 86 Grand | – | – | – | 14 km/h SSW | 30 | – | 0.1 mm | 14° | gentle breeze, showers possible |
| 06:00 | 86 Grand | – | – | – | 15 km/h SSW | 30 | – | 0.1 mm | 14° | gentle breeze, showers possible |
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
Access, parking and swimming areas are not recorded for this lake. Respect private land.
Sauna after?
Rossbeigh Sauna · Rossbeigh Beach, Glenbeigh · 8 km · mobile
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Skellig Sauna · Cuas Crom Beach, Cahersiveen (also St Finian's Bay, Ballinskelligs) · 21 km · mobile
Sunset Sauna Kerry · Coornagillagh Beach, Tuosist, Kenmare Bay · 27 km · mobile
Put Coomnagrossaun Lake 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🌊 Coomnagrossaun Lake dip · GrandFri, 2 Oct 17:30–18:30 · gentle breeze, dry
🌊 Coomnagrossaun Lake dip · GrandSat, 3 Oct 11:30–12:30 · gentle breeze, dry, sunny
🌊 Coomnagrossaun Lake dip · GrandSun, 4 Oct 07:30–08:30 · gentle breeze, dry
Nearby spots
Score is Dipper's own blend. It rates comfort, not safety. Forecast: Met Éireann. Lake data: © OpenStreetMap contributors.