TidalMap

Port Jefferson Tide Times

Washington · Station 9445683 · Updated Aug 5, 2026

Port Jefferson runs a mean tidal range of about 7.0 ft. This month the highest water, 11.4 ft, comes on the evening of Aug 14, and the lowest, a -2.6 ft minus tide, on the morning of Aug 11.

Nearest gauge measuring live water level: SEATTLE (Madison St.), Elliott Bay (9447130), about 12 mi away — high and low tides here run on average about 4 min earlier.

Predictedno live gauge

Next low tide 5.4 ft at 3:53 PM

Predicted

Monthly tide calendar

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

🌊 Biggest flood tides at Port Jefferson this month: Aug 1, Aug 2, Aug 3, Aug 4, Aug 11, Aug 12, Aug 13, Aug 14, Aug 15, Aug 16, Aug 30, Aug 31. 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 Port Jefferson this month: Aug 1, Aug 7, Aug 8, Aug 9, Aug 10, Aug 11, Aug 12, Aug 13, Aug 14, Aug 25, Aug 26, Aug 27 …. These drain the flats and expose the oyster rock — prime for sight-fishing and clamming.

August 2026

Sun

Mon

Tue

Wed

Thu

Fri

Sat

1L:5.1H:9.0L:-0.2H:11.1

2L:4.2H:8.7L:0.8H:11.2

3L:3.2H:8.4L:2.2H:11.1

4L:2.1H:8.2L:3.7H:11.0

5🌗L:1.1H:8.0L:5.4H:10.7

6🌗L:0.3H:8.1L:6.9H:10.5

7🌗L:-0.5H:8.7L:8.0H:10.2

8L:-1.2H:9.6L:8.3

9H:10.1L:-1.9H:10.3L:8.0

10H:10.1L:-2.4H:10.8L:7.3

11H:10.2L:-2.6H:11.1L:6.4

12🌑H:10.2L:-2.4H:11.2L:5.5

13🌑H:10.1L:-1.9H:11.3

14🌑L:4.4H:9.9L:-0.9H:11.4

15🌑L:3.5H:9.5L:0.4H:11.3

16L:2.6H:9.1L:2.0H:11.0

17L:1.8H:8.7L:3.6H:10.7

18L:1.3H:8.3L:5.2H:10.1

19🌓L:1.0H:8.3L:6.6H:9.5

20🌓L:0.9H:8.5L:7.6H:8.9

21🌓L:0.9H:9.1L:7.8H:8.5

22🌓L:0.8H:9.7L:7.4

23H:8.3L:0.5H:10.0L:7.0

24H:8.4L:0.2H:10.2L:6.6

25H:8.7L:-0.1H:10.3L:6.1

26H:9.0L:-0.3H:10.4L:5.5

27🌕H:9.2L:-0.3H:10.5L:4.8

28🌕H:9.4L:-0.0H:10.7

29🌕L:3.8H:9.5L:0.6H:10.8

30L:2.8H:9.5L:1.6H:10.9

31L:1.7H:9.5L:2.8H:10.9

Best fishing times (solunar)

Major and minor solunar windows for Port Jefferson — 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 🌗	5:28–7:28 AM 5:53–7:53 PM	10:21–12:21 AM 1:20–3:20 PM	33
Thu Aug 6 🌗	6:24–8:24 AM 6:49–8:49 PM	10:56–12:56 AM 2:44–4:44 PM	42
Fri Aug 7 🌗	7:25–9:25 AM 7:50–9:50 PM	— 4:04–6:04 PM	55
Sat Aug 8 🌘	8:28–10:28 AM 8:53–10:53 PM	11:45–1:45 AM 5:14–7:14 PM	67
Sun Aug 9 🌘	9:33–11:33 AM 9:58–11:58 PM	12:49–2:49 AM 6:09–8:09 PM	78
Mon Aug 10 🌘	10:36–12:36 PM 11:01–1:01 AM	2:06–4:06 AM 6:50–8:50 PM	86
Tue Aug 11 🌘	11:34–1:34 PM 11:59–1:59 AM	3:29–5:29 AM 7:20–9:20 PM	92

Predictions & observations: NOAA CO-OPS station 9445683. 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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