TidalMap

Southwest Harbor Tide Times

Maine · Station 8413564 · Updated Aug 5, 2026

Southwest Harbor runs a mean tidal range of about 9.9 ft. This month the highest water, 12.2 ft, comes on the evening of Aug 12, and the lowest, a -1.1 ft minus tide, on the morning of Aug 13.

Nearest gauge measuring live water level: Bar Harbor (8413320), about 10 mi away — high and low tides here run on average about 14 min earlier.

Predictedno live gauge

Next high tide 10.9 ft at 4:11 PM

Predicted

Monthly tide calendar

Flood & low finder Flood tide ≥ ft Low tide ≤ ft

🌊 Biggest flood tides at Southwest Harbor this month: Aug 10, Aug 11, Aug 12, Aug 14, Aug 15, Aug 16. These spring highs push water up into the grass and over the oyster rock — prime for poling into flooded marsh for tailing reds.

🔻 Negative (minus) low tides at Southwest Harbor this month: Aug 10, Aug 11, Aug 12, Aug 13, Aug 14, Aug 15, Aug 16, Aug 30. These drain the flats and expose the oyster rock — prime for sight-fishing and clamming.

August 2026

Sun

Mon

Tue

Wed

Thu

Fri

Sat

1H:10.9L:0.2H:10.2L:0.9

2H:10.8L:0.2H:10.5L:0.8

3H:10.7L:0.3H:10.7L:0.7

4H:10.4L:0.4H:10.8L:0.6

5🌗H:10.1L:0.6H:10.9L:0.5

6🌗H:9.8L:0.9H:10.9L:0.5

7🌗H:9.5L:1.1H:11.0

8L:0.4H:9.4L:1.2H:11.1

9L:0.2H:9.5L:1.0H:11.4

10L:-0.2H:9.8L:0.7H:11.7

11L:-0.6H:10.3L:0.3H:12.1

12🌑L:-0.9H:10.8L:-0.0H:12.2

13🌑L:-1.1H:11.1L:-0.3

14🌑H:12.2L:-1.0H:11.3L:-0.3

15🌑H:11.9L:-0.8H:11.3L:-0.2

16H:11.5L:-0.3H:11.2L:0.0

17H:10.8L:0.2H:10.9L:0.4

18H:10.2L:0.8H:10.5L:0.8

19🌓H:9.5L:1.4H:10.2L:1.1

20🌓H:9.0L:1.9H:9.8L:1.4

21🌓H:8.6L:2.2H:9.6

22🌓L:1.5H:8.4L:2.3H:9.6

23L:1.4H:8.5L:2.2H:9.8

24L:1.2H:8.7L:1.9H:10.0

25L:0.9H:9.1L:1.6H:10.4

26L:0.6H:9.5L:1.3H:10.7

27🌕L:0.4H:9.9L:1.0H:10.9

28🌕L:0.1H:10.3L:0.7H:11.0

29🌕L:0.0H:10.6L:0.4

30H:11.1L:-0.0H:10.9L:0.2

31H:11.0L:0.0H:11.2L:0.0

Best fishing times (solunar)

Major and minor solunar windows for Southwest Harbor — peak feeding activity is around the moon overhead/underfoot (majors) and moonrise/moonset (minors). Score is the day's activity coefficient (0–100).

Day	Major windows	Minor windows	Score
Today 🌗	4:43–6:43 AM 5:08–7:08 PM	9:52–11:52 PM 12:19–2:19 PM	34
Thu Aug 6 🌗	5:39–7:39 AM 6:04–8:04 PM	10:30–12:30 AM 1:40–3:40 PM	40
Fri Aug 7 🌗	6:39–8:39 AM 7:04–9:04 PM	— 2:58–4:58 PM	53
Sat Aug 8 🌘	7:42–9:42 AM 8:07–10:07 PM	11:19–1:19 AM 4:09–6:09 PM	66
Sun Aug 9 🌘	8:47–10:47 AM 9:12–11:12 PM	12:21–2:21 AM 5:07–7:07 PM	76
Mon Aug 10 🌘	9:50–11:50 AM 10:15–12:15 AM	1:34–3:34 AM 5:53–7:53 PM	85
Tue Aug 11 🌘	10:49–12:49 PM 11:14–1:14 AM	2:54–4:54 AM 6:28–8:28 PM	92

Predictions & observations: NOAA CO-OPS station 8413564. Solunar windows computed from the moon's position for this location. Times shown in the station's local time. Not for navigation.

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