Lough Herwainan
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
91
Grand · gentle breeze, dry
Wind
14 km/h
Gentle breeze, SW, gusts 30
Daylight
07:38
Sunrise. Sunset 19:05. Air 11°C.
Best dip each day
Daylight hours, preferring high tideToday
19:00
Grand 97/100
light winds, dry · 12 km/h
☀ 07:38–19:05
Sun, 4 Oct
08:00
Fresh 60/100
fresh breeze, dry · 33 km/h
☀ 07:40–19:02
Mon, 5 Oct
19:00
Grand 87/100
light winds, rain · 11 km/h
☀ 07:42–19:00
Tue, 6 Oct
10:00
Grand 83/100
gentle breeze, showers possible · 15 km/h
☀ 07:44–18:57
Wed, 7 Oct
19:00
Decent 69/100
moderate breeze, rain · 22 km/h
☀ 07:45–18:55
Thu, 8 Oct
10:00
Grand 97/100
light winds, dry · 10 km/h
☀ 07:47–18:52
Fri, 9 Oct
19:00
Blowy 41/100
fresh breeze, rain · 34 km/h
☀ 07:49–18:50
Week at a glance
Tap or drag to pick an hour. Everything below follows.Sat 07:0091 · Grand
Sat, 3 Oct, 07:00
91 Grand- gentle breeze
- dry
Waves
–
Wind
14 km/h SW · gusts 30
Tide
–
Air
11°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 | ||||||||||
| 06:00 | 91 Grand | – | – | – | 14 km/h WSW | 28 | – | dry | 11° | gentle breeze, dry |
| 07:00 | 91 Grand | – | – | – | 14 km/h SW | 30 | – | dry | 11° | gentle breeze, dry |
| 08:00 | 91 Grand | – | – | – | 14 km/h SW | 30 | – | dry | 11° | gentle breeze, dry |
| 09:00 | 91 Grand | – | – | – | 14 km/h SSW | 31 | – | 0.1 mm | 11° | gentle breeze, dry |
| 10:00 | 91 Grand | – | – | – | 14 km/h WSW | 33 | – | dry | 12° | gentle breeze, dry |
| 11:00 | 91 Grand | – | – | – | 14 km/h WSW | 34 | – | dry | 12° | gentle breeze, dry |
| 12:00 | 94 Grand | – | – | – | 16 km/h WSW | 33 | – | dry | 14° | gentle breeze, dry, sunny |
| 13:00 | 94 Grand | – | – | – | 17 km/h WSW | 32 | – | dry | 14° | gentle breeze, dry, sunny |
| 14:00 | 94 Grand | – | – | – | 18 km/h WSW | 31 | – | dry | 15° | gentle breeze, dry |
| 15:00 | 94 Grand | – | – | – | 16 km/h SW | 32 | – | dry | 15° | gentle breeze, dry |
| 16:00 | 94 Grand | – | – | – | 18 km/h SW | 32 | – | dry | 15° | gentle breeze, dry, sunny |
| 17:00 | 94 Grand | – | – | – | 15 km/h SW | 32 | – | dry | 15° | gentle breeze, dry, sunny |
| 18:00 | 94 Grand | – | – | – | 14 km/h SSW | 30 | – | dry | 14° | gentle breeze, dry |
| 19:00 | 97 Grand | – | – | – | 12 km/h SSW | 25 | – | dry | 13° | light winds, dry |
| 20:00 | 97 Grand | – | – | – | 11 km/h S | 23 | – | dry | 12° | light winds, dry |
| 21:00 | 91 Grand | – | – | – | 13 km/h SSW | 27 | – | dry | 12° | gentle breeze, dry |
| 22:00 | 91 Grand | – | – | – | 15 km/h SSW | 33 | – | dry | 12° | gentle breeze, dry, sunny |
| 23:00 | 81 Grand | – | – | – | 22 km/h SSW | 38 | – | dry | 12° | moderate breeze, dry |
| Sunday, 4 October | ||||||||||
| 00:00 | 65 Decent | – | – | – | 29 km/h SSW | 44 | – | dry | 12° | fresh breeze, dry |
| 01:00 | 65 Decent | – | – | – | 30 km/h SSW | 49 | – | dry | 12° | fresh breeze, dry |
| 02:00 | 65 Decent | – | – | – | 35 km/h SSW | 53 | – | dry | 13° | fresh breeze, dry |
| 03:00 | 57 Fresh | – | – | – | 34 km/h SSW | 56 | – | dry | 13° | fresh breeze, dry |
| 04:00 | 60 Fresh | – | – | – | 33 km/h SSW | 57 | – | 0.1 mm | 13° | fresh breeze, dry |
| 05:00 | 60 Fresh | – | – | – | 36 km/h SSW | 57 | – | 0.1 mm | 13° | fresh breeze, dry |
| 06:00 | 60 Fresh | – | – | – | 37 km/h SSW | 57 | – | 0.1 mm | 13° | fresh breeze, dry |
| 07:00 | 60 Fresh | – | – | – | 36 km/h SSW | 56 | – | 0.1 mm | 14° | fresh breeze, dry |
| 08:00 | 60 Fresh | – | – | – | 33 km/h SSW | 55 | – | 0.1 mm | 14° | fresh breeze, dry |
| 09:00 | 60 Fresh | – | – | – | 33 km/h SSW | 54 | – | 0.2 mm | 15° | fresh breeze, showers possible |
| 10:00 | 60 Fresh | – | – | – | 32 km/h SSW | 53 | – | 0.2 mm | 15° | fresh breeze, showers possible |
| 11:00 | 60 Fresh | – | – | – | 31 km/h SW | 53 | – | 0.2 mm | 16° | fresh breeze, showers possible |
| 12:00 | 60 Fresh | – | – | – | 32 km/h SSW | 54 | – | 0.2 mm | 16° | fresh breeze, showers possible |
| 13:00 | 52 Fresh | – | – | – | 31 km/h SSW | 54 | – | 0.2 mm | 16° | fresh breeze, showers possible |
| 14:00 | 60 Fresh | – | – | – | 30 km/h SSW | 55 | – | 0.1 mm | 16° | fresh breeze, dry |
| 15:00 | 52 Fresh | – | – | – | 30 km/h SW | 56 | – | 0.2 mm | 16° | fresh breeze, showers possible |
| 16:00 | 52 Fresh | – | – | – | 33 km/h SW | 57 | – | 0.2 mm | 16° | fresh breeze, showers possible |
| 17:00 | 60 Fresh | – | – | – | 32 km/h SW | 58 | – | 0.1 mm | 16° | fresh breeze, dry |
| 18:00 | 60 Fresh | – | – | – | 32 km/h SW | 57 | – | 0.1 mm | 16° | fresh breeze, dry |
| 19:00 | 60 Fresh | – | – | – | 30 km/h SW | 57 | – | 0.1 mm | 16° | fresh breeze, dry |
| 20:00 | 60 Fresh | – | – | – | 29 km/h SW | 56 | – | 0.1 mm | 16° | fresh breeze, dry |
| 21:00 | 60 Fresh | – | – | – | 34 km/h SW | 57 | – | 0.1 mm | 16° | fresh breeze, dry |
| 22:00 | 60 Fresh | – | – | – | 35 km/h SW | 58 | – | 0.1 mm | 15° | fresh breeze, dry |
| 23:00 | 44 Blowy | – | – | – | 39 km/h SW | 60 | – | 0.1 mm | 16° | strong wind, dry |
| Monday, 5 October | ||||||||||
| 00:00 | 60 Fresh | – | – | – | 36 km/h SW | 61 | – | dry | 15° | fresh breeze, dry |
| 01:00 | 44 Blowy | – | – | – | 39 km/h SW | 63 | – | 0.1 mm | 16° | strong wind, dry |
| 02:00 | 68 Decent | – | – | – | 37 km/h SW | 52 | – | 0.1 mm | 15° | fresh breeze, dry |
| 03:00 | 68 Decent | – | – | – | 35 km/h SW | 52 | – | 0.1 mm | 15° | fresh breeze, dry |
| 04:00 | 68 Decent | – | – | – | 35 km/h SW | 53 | – | 0.1 mm | 15° | fresh breeze, dry |
| 05:00 | 68 Decent | – | – | – | 34 km/h SW | 53 | – | 0.1 mm | 15° | fresh 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?
Cocoon Sauna · Portnablagh Pier, Dunfanaghy · 16 km · fixed
itSaunatrailer · The Wee Beach, Marble Hill, Dunfanaghy · 17 km · fixed
Put Lough Herwainan 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🌊 Lough Herwainan dip · GrandSat, 3 Oct 18:30–19:30 · light winds, dry
🌊 Lough Herwainan dip · FreshSun, 4 Oct 07:30–08:30 · fresh breeze, dry
🌊 Lough Herwainan dip · GrandMon, 5 Oct 18:30–19:30 · light winds, rain
Nearby spots
Score is Dipper's own blend. It rates comfort, not safety. Forecast: Met Éireann. Lake data: © OpenStreetMap contributors.