Lough Nastachan
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
86
Grand · gentle breeze, dry
Wind
14 km/h
Gentle breeze, WSW, gusts 29
Daylight
07:34
Sunrise. Sunset 19:00. Air 8°C.
Best dip each day
Daylight hours, preferring high tideToday
14:00
Grand 100/100
light winds, dry · 12 km/h
☀ 07:34–19:00
Sun, 4 Oct
10:00
Grand 84/100
moderate breeze, dry · 27 km/h
☀ 07:36–18:58
Mon, 5 Oct
19:00
Grand 92/100
light winds, showers possible · 10 km/h
☀ 07:37–18:55
Tue, 6 Oct
19:00
Grand 91/100
gentle breeze, dry · 18 km/h
☀ 07:39–18:53
Wed, 7 Oct
19:00
Decent 69/100
moderate breeze, rain · 23 km/h
☀ 07:41–18:50
Thu, 8 Oct
10:00
Grand 97/100
light winds, dry · 8 km/h
☀ 07:43–18:48
Fri, 9 Oct
13:00
Fresh 59/100
moderate breeze, rain · 28 km/h
☀ 07:45–18:45
Week at a glance
Tap or drag to pick an hour. Everything below follows.Sat 01:0086 · Grand
Sat, 3 Oct, 01:00
86 Grand- gentle breeze
- dry
Waves
–
Wind
14 km/h WSW · gusts 29
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 | ||||||||||
| 01:00 | 86 Grand | – | – | – | 14 km/h WSW | 29 | – | dry | 8° | gentle breeze, dry |
| 02:00 | 86 Grand | – | – | – | 13 km/h SW | 26 | – | dry | 8° | gentle breeze, dry |
| 03:00 | 86 Grand | – | – | – | 14 km/h SW | 25 | – | dry | 8° | gentle breeze, dry |
| 04:00 | 86 Grand | – | – | – | 13 km/h SW | 24 | – | dry | 8° | gentle breeze, dry |
| 05:00 | 86 Grand | – | – | – | 13 km/h SW | 24 | – | dry | 8° | gentle breeze, dry |
| 06:00 | 92 Grand | – | – | – | 12 km/h SSW | 23 | – | dry | 8° | light winds, dry |
| 07:00 | 92 Grand | – | – | – | 11 km/h S | 22 | – | dry | 8° | light winds, dry |
| 08:00 | 86 Grand | – | – | – | 12 km/h SW | 23 | – | dry | 9° | gentle breeze, dry |
| 09:00 | 86 Grand | – | – | – | 15 km/h SW | 24 | – | dry | 10° | gentle breeze, dry |
| 10:00 | 91 Grand | – | – | – | 15 km/h SSW | 26 | – | dry | 11° | gentle breeze, dry |
| 11:00 | 91 Grand | – | – | – | 16 km/h SSW | 28 | – | dry | 11° | gentle breeze, dry |
| 12:00 | 91 Grand | – | – | – | 14 km/h WSW | 28 | – | dry | 12° | gentle breeze, dry |
| 13:00 | 97 Grand | – | – | – | 12 km/h WSW | 28 | – | dry | 12° | light winds, dry |
| 14:00 | 100 Grand | – | – | – | 12 km/h W | 27 | – | dry | 14° | light winds, dry |
| 15:00 | 100 Grand | – | – | – | 11 km/h WSW | 27 | – | dry | 14° | light winds, dry |
| 16:00 | 100 Grand | – | – | – | 11 km/h SW | 26 | – | dry | 14° | light winds, dry, sunny |
| 17:00 | 100 Grand | – | – | – | 11 km/h SSW | 25 | – | dry | 14° | light winds, dry |
| 18:00 | 100 Grand | – | – | – | 10 km/h S | 23 | – | dry | 13° | light winds, dry, sunny |
| 19:00 | 97 Grand | – | – | – | 12 km/h S | 19 | – | dry | 12° | light winds, dry, sunny |
| 20:00 | 91 Grand | – | – | – | 13 km/h S | 19 | – | dry | 11° | gentle breeze, dry |
| 21:00 | 91 Grand | – | – | – | 13 km/h S | 23 | – | dry | 10° | gentle breeze, dry |
| 22:00 | 91 Grand | – | – | – | 17 km/h S | 26 | – | dry | 10° | gentle breeze, dry |
| 23:00 | 91 Grand | – | – | – | 18 km/h S | 30 | – | dry | 10° | gentle breeze, dry |
| Sunday, 4 October | ||||||||||
| 00:00 | 86 Grand | – | – | – | 19 km/h S | 33 | – | dry | 10° | gentle breeze, dry |
| 01:00 | 91 Grand | – | – | – | 18 km/h SSE | 37 | – | dry | 10° | gentle breeze, dry |
| 02:00 | 81 Grand | – | – | – | 23 km/h S | 41 | – | dry | 11° | moderate breeze, dry |
| 03:00 | 81 Grand | – | – | – | 26 km/h S | 46 | – | dry | 11° | moderate breeze, dry |
| 04:00 | 65 Decent | – | – | – | 32 km/h S | 48 | – | dry | 11° | fresh breeze, dry |
| 05:00 | 81 Grand | – | – | – | 28 km/h SSW | 49 | – | dry | 11° | moderate breeze, dry |
| 06:00 | 81 Grand | – | – | – | 28 km/h SSW | 49 | – | dry | 11° | moderate breeze, dry |
| 07:00 | 65 Decent | – | – | – | 29 km/h SSW | 47 | – | dry | 12° | fresh breeze, dry |
| 08:00 | 81 Grand | – | – | – | 26 km/h SSW | 45 | – | dry | 12° | moderate breeze, dry |
| 09:00 | 81 Grand | – | – | – | 25 km/h SSW | 44 | – | dry | 13° | moderate breeze, dry |
| 10:00 | 84 Grand | – | – | – | 27 km/h SSW | 44 | – | dry | 13° | moderate breeze, dry |
| 11:00 | 84 Grand | – | – | – | 26 km/h SSW | 44 | – | dry | 14° | moderate breeze, dry |
| 12:00 | 84 Grand | – | – | – | 23 km/h SSW | 44 | – | dry | 14° | moderate breeze, dry |
| 13:00 | 84 Grand | – | – | – | 25 km/h SSW | 45 | – | dry | 15° | moderate breeze, dry |
| 14:00 | 84 Grand | – | – | – | 26 km/h SSW | 45 | – | dry | 15° | moderate breeze, dry |
| 15:00 | 84 Grand | – | – | – | 22 km/h SSW | 45 | – | dry | 15° | moderate breeze, dry |
| 16:00 | 84 Grand | – | – | – | 23 km/h SSW | 45 | – | dry | 15° | moderate breeze, dry |
| 17:00 | 84 Grand | – | – | – | 24 km/h SW | 43 | – | dry | 15° | moderate breeze, dry |
| 18:00 | 84 Grand | – | – | – | 23 km/h SW | 42 | – | dry | 16° | moderate breeze, dry |
| 19:00 | 84 Grand | – | – | – | 21 km/h SW | 41 | – | dry | 16° | moderate breeze, dry |
| 20:00 | 94 Grand | – | – | – | 19 km/h SW | 41 | – | dry | 15° | gentle breeze, dry |
| 21:00 | 84 Grand | – | – | – | 21 km/h SSW | 41 | – | dry | 15° | moderate breeze, dry |
| 22:00 | 84 Grand | – | – | – | 24 km/h WSW | 42 | – | dry | 16° | moderate breeze, dry |
| 23:00 | 84 Grand | – | – | – | 24 km/h SW | 43 | – | dry | 16° | moderate breeze, dry |
| Monday, 5 October | ||||||||||
| 00:00 | 84 Grand | – | – | – | 27 km/h SW | 44 | – | dry | 16° | 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
Access, parking and swimming areas are not recorded for this lake. Respect private land.
Sauna after?
The Sea View Sauna (Culdaff) · Culdaff Beach car park · 7 km · fixed
The Sea View Sauna (Shroove) · Shroove Beach, Greencastle, Inishowen · 10 km · fixed
HotBox Sea Sauna (Benone) · Benone Strand, Magilligan, Co. Londonderry (NI) · 16 km · fixed
Sauna & Sea · Portstewart Strand (National Trust), Co. Londonderry (NI) · 24 km · fixed
Put Lough Nastachan 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 Nastachan dip · GrandSat, 3 Oct 13:30–14:30 · light winds, dry
🌊 Lough Nastachan dip · GrandSun, 4 Oct 09:30–10:30 · moderate breeze, dry
🌊 Lough Nastachan dip · GrandMon, 5 Oct 18:30–19:30 · light winds, showers possible
Nearby spots
Score is Dipper's own blend. It rates comfort, not safety. Forecast: Met Éireann. Lake data: © OpenStreetMap contributors.