Rathbeale Reservoir
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
92
Grand · light winds, dry
Wind
11 km/h
Light breeze, SW, gusts 15
Daylight
07:29
Sunrise. Sunset 18:58. Air 8°C.
Best dip each day
Daylight hoursToday
12:00
Grand 100/100
light winds, dry, sunny · 9 km/h
☀ 07:29–18:58
Sun, 4 Oct
09:00
Grand 94/100
gentle breeze, dry · 17 km/h
☀ 07:31–18:56
Mon, 5 Oct
08:00
Grand 94/100
gentle breeze, dry · 18 km/h
☀ 07:33–18:53
Tue, 6 Oct
19:00
Grand 97/100
light winds, dry · 8 km/h
☀ 07:34–18:51
Wed, 7 Oct
16:00
Grand 94/100
gentle breeze, dry · 18 km/h
☀ 07:36–18:49
Thu, 8 Oct
19:00
Grand 97/100
light winds, dry · 8 km/h
☀ 07:38–18:46
Fri, 9 Oct
13:00
Decent 76/100
moderate breeze, showers possible · 28 km/h
☀ 07:40–18:44
Week at a glance
Tap or drag to pick an hour. Everything below follows.Sat 09:0092 · Grand
Sat, 3 Oct, 09:00
92 Grand- light winds
- dry
- sunny
Waves
–
Wind
11 km/h SW · gusts 15
Tide
–
Air
8°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 | ||||||||||
| 08:00 | 92 Grand | – | – | – | 11 km/h WSW | 15 | – | dry | 7° | light winds, dry, sunny |
| 09:00 | 92 Grand | – | – | – | 11 km/h SW | 15 | – | dry | 8° | light winds, dry, sunny |
| 10:00 | 97 Grand | – | – | – | 11 km/h SW | 18 | – | dry | 10° | light winds, dry, sunny |
| 11:00 | 97 Grand | – | – | – | 10 km/h WSW | 19 | – | dry | 12° | light winds, dry |
| 12:00 | 100 Grand | – | – | – | 9 km/h WSW | 19 | – | dry | 13° | light winds, dry, sunny |
| 13:00 | 100 Grand | – | – | – | 8 km/h WSW | 20 | – | dry | 14° | light winds, dry |
| 14:00 | 100 Grand | – | – | – | 8 km/h SW | 19 | – | dry | 14° | light winds, dry |
| 15:00 | 100 Grand | – | – | – | 8 km/h SW | 19 | – | dry | 15° | light winds, dry, sunny |
| 16:00 | 100 Grand | – | – | – | 8 km/h WSW | 20 | – | dry | 15° | light winds, dry, sunny |
| 17:00 | 100 Grand | – | – | – | 11 km/h SSE | 20 | – | dry | 14° | light winds, dry, sunny |
| 18:00 | 100 Grand | – | – | – | 12 km/h SSE | 18 | – | dry | 14° | light winds, dry, sunny |
| 19:00 | 97 Grand | – | – | – | 8 km/h SSE | 15 | – | dry | 12° | light winds, dry, sunny |
| 20:00 | 97 Grand | – | – | – | 6 km/h S | 12 | – | dry | 11° | light winds, dry |
| 21:00 | 92 Grand | – | – | – | 9 km/h SSW | 12 | – | dry | 10° | light winds, dry |
| 22:00 | 92 Grand | – | – | – | 11 km/h SW | 14 | – | dry | 10° | light winds, dry |
| 23:00 | 92 Grand | – | – | – | 12 km/h SW | 15 | – | dry | 9° | light winds, dry, sunny |
| Sunday, 4 October | ||||||||||
| 00:00 | 86 Grand | – | – | – | 13 km/h SW | 17 | – | dry | 9° | gentle breeze, dry, sunny |
| 01:00 | 86 Grand | – | – | – | 13 km/h SW | 18 | – | dry | 9° | gentle breeze, dry, sunny |
| 02:00 | 92 Grand | – | – | – | 12 km/h SW | 17 | – | dry | 9° | light winds, dry |
| 03:00 | 92 Grand | – | – | – | 12 km/h SW | 17 | – | dry | 9° | light winds, dry |
| 04:00 | 92 Grand | – | – | – | 10 km/h SW | 18 | – | dry | 9° | light winds, dry |
| 05:00 | 92 Grand | – | – | – | 9 km/h SSW | 18 | – | dry | 9° | light winds, dry |
| 06:00 | 97 Grand | – | – | – | 5 km/h SSW | 19 | – | dry | 10° | light winds, dry |
| 07:00 | 97 Grand | – | – | – | 10 km/h SW | 21 | – | dry | 11° | light winds, dry |
| 08:00 | 91 Grand | – | – | – | 13 km/h SW | 23 | – | dry | 12° | gentle breeze, dry |
| 09:00 | 94 Grand | – | – | – | 17 km/h SW | 27 | – | dry | 13° | gentle breeze, dry |
| 10:00 | 84 Grand | – | – | – | 20 km/h SW | 32 | – | dry | 14° | moderate breeze, dry |
| 11:00 | 94 Grand | – | – | – | 18 km/h SW | 35 | – | dry | 15° | gentle breeze, dry |
| 12:00 | 94 Grand | – | – | – | 19 km/h SW | 36 | – | dry | 16° | gentle breeze, dry |
| 13:00 | 84 Grand | – | – | – | 20 km/h WSW | 38 | – | dry | 17° | moderate breeze, dry |
| 14:00 | 84 Grand | – | – | – | 24 km/h SW | 39 | – | dry | 17° | moderate breeze, dry |
| 15:00 | 84 Grand | – | – | – | 23 km/h WSW | 39 | – | dry | 17° | moderate breeze, dry |
| 16:00 | 84 Grand | – | – | – | 22 km/h SW | 38 | – | dry | 18° | moderate breeze, dry, warm air |
| 17:00 | 84 Grand | – | – | – | 20 km/h SW | 37 | – | dry | 19° | moderate breeze, dry, warm air |
| 18:00 | 94 Grand | – | – | – | 18 km/h SW | 35 | – | dry | 18° | gentle breeze, dry |
| 19:00 | 94 Grand | – | – | – | 19 km/h SW | 34 | – | dry | 17° | gentle breeze, dry |
| 20:00 | 94 Grand | – | – | – | 18 km/h SW | 30 | – | dry | 17° | gentle breeze, dry |
| 21:00 | 94 Grand | – | – | – | 17 km/h SW | 31 | – | dry | 17° | gentle breeze, dry |
| 22:00 | 94 Grand | – | – | – | 18 km/h SW | 33 | – | 0.1 mm | 17° | gentle breeze, dry |
| 23:00 | 94 Grand | – | – | – | 19 km/h SW | 32 | – | dry | 16° | gentle breeze, dry |
| Monday, 5 October | ||||||||||
| 00:00 | 94 Grand | – | – | – | 19 km/h WSW | 32 | – | dry | 16° | gentle breeze, dry |
| 01:00 | 94 Grand | – | – | – | 18 km/h WSW | 35 | – | dry | 16° | gentle breeze, dry |
| 02:00 | 94 Grand | – | – | – | 17 km/h WSW | 33 | – | dry | 16° | gentle breeze, dry |
| 03:00 | 94 Grand | – | – | – | 19 km/h SW | 33 | – | dry | 16° | gentle breeze, dry |
| 04:00 | 94 Grand | – | – | – | 19 km/h SW | 34 | – | dry | 16° | gentle breeze, dry |
| 05:00 | 94 Grand | – | – | – | 19 km/h SW | 33 | – | dry | 16° | gentle breeze, dry |
| 06:00 | 94 Grand | – | – | – | 19 km/h SW | 33 | – | dry | 16° | gentle breeze, dry |
| 07:00 | 94 Grand | – | – | – | 19 km/h SW | 36 | – | dry | 16° | gentle 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
Access, parking and swimming areas are not recorded for this lake. Respect private land.
Sauna after?
Restore Sauna Portmarnock · White Sands Hotel, Coast Road, Portmarnock · 9 km · fixed
Mercury Sauna · Portmarnock Beach north car park · 10 km · fixed
The Sea Sauna · Tower Bay Beach, Portrane · 10 km · fixed
Fad Saoil Saunas (Clontarf) · Clontarf seafront · 12 km · fixed
Put Rathbeale Reservoir 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🌊 Rathbeale Reservoir dip · GrandSat, 3 Oct 11:30–12:30 · light winds, dry, sunny
🌊 Rathbeale Reservoir dip · GrandSun, 4 Oct 08:30–09:30 · gentle breeze, dry
🌊 Rathbeale Reservoir dip · GrandMon, 5 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.