TidalMap

Harlem River, Randalls Island Tide Times

New York · Station 8518643 · Updated Sep 20, 2026

Harlem River, Randalls Island runs a mean tidal range of about 4.4 ft. This month the highest water, 5.9 ft, comes on the afternoon of Sep 29, and the lowest, a -0.2 ft minus tide, on the evening of Sep 28.

Nearest gauge measuring live water level: NEW York (The Battery) (8518750), about 8 mi away, high and low tides here run on average about 116 min later.

Predictedno live gauge

Next high tide 3.7 ft at 5:42 AM

Predicted

Today's tides
High tide	5:42 AM	3.7 ft
Low tide	11:36 AM	1.4 ft
High tide	6:00 PM	4.4 ft

Monthly tide calendar

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

🌊 Biggest flood tides at Harlem River, Randalls Island this month: Sep 1, Sep 2, Sep 12, Sep 13, Sep 26, Sep 27, Sep 28, Sep 29, Sep 30. 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 Harlem River, Randalls Island this month: Sep 27, Sep 28, Sep 29, Sep 30. These drain the flats and expose the oyster rock, prime for sight-fishing and clamming.

September 2026

Sun

Mon

Tue

Wed

Thu

Fri

Sat

1H:4.8L:0.2H:5.6L:0.1

2H:4.6L:0.3H:5.5L:0.3

3🌗H:4.4L:0.5H:5.4L:0.4

4🌗H:4.3L:0.6H:5.3L:0.5

5🌗H:4.2L:0.7H:5.2

6🌗L:0.6H:4.2L:0.7H:5.2

7L:0.5H:4.4L:0.7H:5.2

8L:0.4H:4.7L:0.6H:5.3

9L:0.3H:5.0L:0.4H:5.3

10L:0.2H:5.3L:0.2H:5.3

11🌑L:0.1H:5.4L:0.1H:5.2

12🌑L:0.1H:5.5L:0.1

13🌑H:5.0L:0.2H:5.5L:0.2

14H:4.8L:0.4H:5.4L:0.3

15H:4.6L:0.6H:5.2L:0.5

16H:4.3L:0.8H:5.0L:0.7

17H:4.1L:1.0H:4.8L:1.0

18🌓H:3.9L:1.2H:4.6L:1.1

19🌓H:3.8L:1.4H:4.5L:1.2

20🌓H:3.7L:1.4H:4.4

21🌓L:1.1H:3.9L:1.3H:4.5

22L:1.0H:4.1L:1.1H:4.6

23L:0.8H:4.4L:0.9H:4.7

24L:0.6H:4.8L:0.6H:4.9

25🌕L:0.4H:5.2L:0.3H:5.0

26🌕L:0.2H:5.5L:0.0H:5.1

27🌕L:0.1H:5.7L:-0.2H:5.0

28🌕L:0.1H:5.8L:-0.2

29H:5.0L:0.1H:5.9L:-0.2

30H:4.8L:0.2H:5.8L:-0.1

Best fishing times (solunar)

Major and minor solunar windows for Harlem River, Randalls Island, 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 🌓	7:32–9:32 PM 7:57–9:57 AM	2:59–4:59 PM 11:09–1:09 AM	54
Mon Sep 21 🌓	8:19–10:19 PM 8:44–10:44 AM	3:31–5:31 PM 12:10–2:10 AM	67
Tue Sep 22 🌔	9:05–11:05 PM 9:30–11:30 AM	3:59–5:59 PM 1:14–3:14 AM	77
Wed Sep 23 🌔	9:49–11:49 PM 10:14–12:14 PM	4:24–6:24 PM 2:18–4:18 AM	86
Thu Sep 24 🌔	10:32–12:32 AM 10:57–12:57 PM	4:46–6:46 PM 3:23–5:23 AM	93
Fri Sep 25 🌕	— —	5:08–7:08 PM 4:29–6:29 AM	96
Sat Sep 26 🌕	11:16–1:16 AM 11:41–1:41 PM	5:30–7:30 PM 5:36–7:36 AM	97

Predictions & observations: NOAA CO-OPS station 8518643. 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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