Dipper › Co. Donegal

Lough Herwainan

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
91
Grand · gentle breeze, dry
Wind
14 km/h
Gentle breeze, SW, gusts 31
Daylight
07:38
Sunrise. Sunset 19:05. Air 11°C.

Best dip each day

Daylight hours, preferring low tide
Today
12:00
Grand 94/100
gentle breeze, dry · 15 km/h
☀ 07:38–19:05
Sun, 4 Oct
08:00
Fresh 60/100
fresh breeze, dry · 31 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 08:0091 · Grandgentle breeze · dry
Sat 3Sun 4Mon 5Tue 6Wed 7Thu 8Fri 90003060912151821Sat 07:00 · 91 Grand · nightSat 08:00 · 91 GrandSat 09:00 · 83 GrandSat 10:00 · 83 GrandSat 11:00 · 91 GrandSat 12:00 · 94 GrandSat 13:00 · 94 GrandSat 14:00 · 94 GrandSat 15:00 · 94 GrandSat 16:00 · 94 GrandSat 17:00 · 94 GrandSat 18:00 · 94 GrandSat 19:00 · 91 GrandSat 20:00 · 97 Grand · nightSat 21:00 · 97 Grand · nightSat 22:00 · 91 Grand · nightSat 23:00 · 81 Grand · nightSun 00:00 · 81 Grand · nightSun 01:00 · 65 Decent · nightSun 02:00 · 65 Decent · nightSun 03:00 · 57 Fresh · nightSun 04:00 · 57 Fresh · nightSun 05:00 · 60 Fresh · nightSun 06:00 · 60 Fresh · nightSun 07:00 · 60 Fresh · nightSun 08:00 · 60 FreshSun 09:00 · 60 FreshSun 10:00 · 52 FreshSun 11:00 · 60 FreshSun 12:00 · 52 FreshSun 13:00 · 52 FreshSun 14:00 · 52 FreshSun 15:00 · 52 FreshSun 16:00 · 60 FreshSun 17:00 · 60 FreshSun 18:00 · 60 FreshSun 19:00 · 60 FreshSun 20:00 · 60 Fresh · nightSun 21:00 · 60 Fresh · nightSun 22:00 · 60 Fresh · nightSun 23:00 · 44 Blowy · nightMon 00:00 · 60 Fresh · nightMon 01:00 · 60 Fresh · nightMon 02:00 · 60 Fresh · nightMon 03:00 · 44 Blowy · nightMon 04:00 · 44 Blowy · nightMon 05:00 · 60 Fresh · nightMon 06:00 · 60 Fresh · nightMon 07:00 · 60 Fresh · nightMon 08:00 · 60 FreshMon 09:00 · 60 FreshMon 10:00 · 60 FreshMon 11:00 · 60 FreshMon 12:00 · 60 FreshMon 13:00 · 56 FreshMon 14:00 · 72 DecentMon 15:00 · 72 DecentMon 16:00 · 72 DecentMon 17:00 · 81 GrandMon 18:00 · 81 GrandMon 19:00 · 87 GrandMon 20:00 · 87 Grand · nightMon 21:00 · 88 Grand · nightMon 22:00 · 79 Decent · nightMon 23:00 · 85 Grand · nightTue 00:00 · 85 Grand · nightTue 01:00 · 85 Grand · nightTue 02:00 · 89 Grand · nightTue 03:00 · 89 Grand · nightTue 04:00 · 89 Grand · nightTue 05:00 · 89 Grand · nightTue 06:00 · 89 Grand · nightTue 07:00 · 83 Grand · nightTue 10:00 · 83 GrandTue 13:00 · 83 GrandTue 16:00 · 73 DecentTue 19:00 · 83 GrandTue 22:00 · 73 Decent · nightWed 01:00 · 79 Decent · nightWed 04:00 · 69 Decent · nightWed 07:00 · 68 Decent · nightWed 10:00 · 68 DecentWed 13:00 · 68 DecentWed 16:00 · 68 DecentWed 19:00 · 69 DecentWed 22:00 · 83 Grand · nightThu 01:00 · 83 Grand · nightThu 04:00 · 97 Grand · nightThu 07:00 · 97 Grand · nightThu 10:00 · 97 GrandThu 13:00 · 73 DecentThu 19:00 · 47 FreshFri 01:00 · 18 Grim · nightFri 07:00 · 14 Grim · nightFri 13:00 · 40 BlowyFri 19:00 · 41 Blowy

Sat, 3 Oct, 08:00

91 Grand
  • gentle breeze
  • dry
NESWsunrisesunset14 km/h
facing unknown
Waves
–
Wind
14 km/h SW · gusts 31
Tide
–
Air
11°C · 0.1 mm rain

Meteogram

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

Hour by hour

Next 48 hours
TimeDipWavesPeriodFromWindGustTideRainAirWhy
Today
08:0091 Grand–––14 km/h SW31–0.1 mm11°gentle breeze, dry
09:0083 Grand–––17 km/h SSW33–0.2 mm11°gentle breeze, showers possible
10:0083 Grand–––14 km/h WSW35–0.2 mm12°gentle breeze, showers possible
11:0091 Grand–––18 km/h WSW35–dry13°gentle breeze, dry
12:0094 Grand–––15 km/h WSW34–dry13°gentle breeze, dry
13:0094 Grand–––18 km/h WSW33–dry14°gentle breeze, dry
14:0094 Grand–––17 km/h WSW32–dry15°gentle breeze, dry, sunny
15:0094 Grand–––16 km/h SW33–dry15°gentle breeze, dry, sunny
16:0094 Grand–––17 km/h SW33–dry15°gentle breeze, dry
17:0094 Grand–––14 km/h SW33–dry14°gentle breeze, dry
18:0094 Grand–––14 km/h SSW31–dry14°gentle breeze, dry
19:0091 Grand–––13 km/h SSW25–dry13°gentle breeze, dry
20:0097 Grand–––12 km/h S24–dry12°light winds, dry
21:0097 Grand–––12 km/h S27–dry12°light winds, dry
22:0091 Grand–––14 km/h SSW32–dry12°gentle breeze, dry
23:0081 Grand–––22 km/h SSW39–dry12°moderate breeze, dry
Sunday, 4 October
00:0081 Grand–––27 km/h SSW44–dry12°moderate breeze, dry
01:0065 Decent–––31 km/h SSW49–dry13°fresh breeze, dry
02:0065 Decent–––30 km/h SSW53–dry13°fresh breeze, dry
03:0057 Fresh–––33 km/h SSW55–dry13°fresh breeze, dry
04:0057 Fresh–––33 km/h SSW56–dry13°fresh breeze, dry
05:0060 Fresh–––34 km/h SSW57–0.1 mm13°fresh breeze, dry
06:0060 Fresh–––36 km/h SW57–0.1 mm13°fresh breeze, dry
07:0060 Fresh–––35 km/h SSW57–0.1 mm14°fresh breeze, dry
08:0060 Fresh–––31 km/h SSW56–0.1 mm14°fresh breeze, dry
09:0060 Fresh–––31 km/h SSW55–0.1 mm15°fresh breeze, dry
10:0052 Fresh–––32 km/h SW55–0.2 mm15°fresh breeze, showers possible
11:0060 Fresh–––35 km/h SW55–0.1 mm16°fresh breeze, dry
12:0052 Fresh–––32 km/h SSW55–0.2 mm16°fresh breeze, showers possible
13:0052 Fresh–––29 km/h SSW56–0.2 mm16°fresh breeze, showers possible
14:0052 Fresh–––32 km/h SSW57–0.2 mm16°fresh breeze, showers possible
15:0052 Fresh–––33 km/h SW58–0.2 mm16°fresh breeze, showers possible
16:0060 Fresh–––33 km/h SW59–0.1 mm16°fresh breeze, dry
17:0060 Fresh–––30 km/h SW59–0.1 mm16°fresh breeze, dry
18:0060 Fresh–––30 km/h SW58–0.1 mm16°fresh breeze, dry
19:0060 Fresh–––29 km/h SW57–0.1 mm16°fresh breeze, dry
20:0060 Fresh–––30 km/h SW58–0.1 mm16°fresh breeze, dry
21:0060 Fresh–––31 km/h SW59–0.1 mm16°fresh breeze, dry
22:0060 Fresh–––33 km/h SW61–dry16°fresh breeze, dry
23:0044 Blowy–––39 km/h WSW64–dry16°strong wind, dry
Monday, 5 October
00:0060 Fresh–––36 km/h WSW65–dry15°fresh breeze, dry
01:0060 Fresh–––37 km/h SW66–dry15°fresh breeze, dry
02:0060 Fresh–––36 km/h SW67–dry15°fresh breeze, dry
03:0044 Blowy–––41 km/h SW67–dry16°strong wind, dry
04:0044 Blowy–––44 km/h WSW66–dry15°strong wind, dry
05:0060 Fresh–––39 km/h SW65–dry15°fresh breeze, dry
06:0060 Fresh–––38 km/h SW63–0.1 mm15°fresh breeze, dry
07:0060 Fresh–––37 km/h WSW61–0.1 mm15°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

Open in Maps · OpenStreetMap

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 11:30–12:30 · gentle breeze, 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

Rocktown Lough

1 km · Co. Donegal · Not classified

Magheraroarty

3 km · Co. Donegal · Excellent Quality

Lough Lagha

3 km · Co. Donegal · Not classified

Mac Alea's Lough

4 km · Co. Donegal · Not classified

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