Massachusetts Tide Charts
Worldwide Tides

King tides at Plum Island

The highest predicted waters at Plum Island, through 2030. Every high tide reaching 7.0 ft above MLLW.

What counts as a king tide

There is no official definition. NOAA does not publish one, and the California King Tides Project simply means the highest predicted tides of the year. This page lists every predicted high water of 7.0 ft or more above MLLW, which on this stretch of coast picks out the handful of days each winter when the water comes up unusually far.

They happen when the moon is closest to Earth and new or full at the same time, with the Earth near its own closest approach to the sun. That alignment stacks the solar and lunar pulls together, and it lands in November, December and January far more often than not.

These are predictions of astronomical tide only. A winter storm arriving on a king tide is what causes flooding, because surge and wind can add a foot or more on top of the figures here.

King tides still to come

24–28 November 2026

Date High water Height
24 NovTue10:33 am10.5 ft
24 NovTue11:10 pm8.9 ft
25 NovWed11:22 am10.8 ft
26 NovThu12:00 am9.0 ft
26 NovThu12:13 pm11.0 ft
27 NovFri12:51 am9.0 ft
27 NovFri1:06 pm10.9 ft
28 NovSat1:45 am9.0 ft
28 NovSat2:01 pm10.7 ft

5–9 June 2027

Date High water Height
5 JunSat12:36 pm8.8 ft
6 JunSun12:49 am10.8 ft
6 JunSun1:27 pm9.0 ft
7 JunMon1:41 am10.9 ft
7 JunMon2:19 pm9.1 ft
8 JunTue2:34 am10.8 ft
8 JunTue3:13 pm9.3 ft
9 JunWed3:30 am10.6 ft
9 JunWed4:08 pm9.4 ft

4–8 July 2027

Date High water Height
4 JulSun12:17 pm8.9 ft
5 JulMon12:32 am10.9 ft
5 JulMon1:08 pm9.2 ft
6 JulTue1:25 am11.0 ft
6 JulTue2:01 pm9.5 ft
7 JulWed2:18 am10.9 ft
7 JulWed2:53 pm9.8 ft
8 JulThu3:13 am10.5 ft
8 JulThu3:47 pm9.9 ft

1–5 August 2027

Date High water Height
1 AugSun11:04 am8.7 ft
1 AugSun11:22 pm10.7 ft
2 AugMon11:57 am9.2 ft
3 AugTue12:16 am10.9 ft
3 AugTue12:49 pm9.6 ft
4 AugWed1:09 am10.9 ft
4 AugWed1:39 pm10.0 ft
5 AugThu2:01 am10.7 ft
5 AugThu2:30 pm10.2 ft

19–23 September 2028

Date High water Height
19 SepTue12:19 pm10.7 ft
20 SepWed12:47 am10.4 ft
20 SepWed1:08 pm11.0 ft
21 SepThu1:38 am10.2 ft
21 SepThu1:57 pm11.1 ft
22 SepFri2:29 am9.9 ft
22 SepFri2:48 pm10.9 ft
23 SepSat3:22 am9.4 ft
23 SepSat3:40 pm10.6 ft

17–21 October 2028

Date High water Height
17 OctTue11:06 am10.6 ft
17 OctTue11:37 pm9.9 ft
18 OctWed11:56 am11.0 ft
19 OctThu12:28 am9.9 ft
19 OctThu12:45 pm11.1 ft
20 OctFri1:19 am9.7 ft
20 OctFri1:34 pm11.0 ft
21 OctSat2:09 am9.4 ft
21 OctSat2:24 pm10.7 ft

14–18 November 2028

Date High water Height
14 NovTue8:52 am10.4 ft
14 NovTue9:26 pm9.2 ft
15 NovWed9:44 am10.7 ft
15 NovWed10:20 pm9.3 ft
16 NovThu10:35 am10.9 ft
16 NovThu11:11 pm9.2 ft
17 NovFri11:24 am10.9 ft
18 NovSat12:00 am9.1 ft
18 NovSat12:13 pm10.7 ft

28 April – 2 May 2029

Date High water Height
28 AprSat12:01 pm9.8 ft
29 AprSun12:18 am11.2 ft
29 AprSun12:52 pm9.7 ft
30 AprMon1:08 am11.2 ft
30 AprMon1:44 pm9.6 ft
1 MayTue2:00 am11.1 ft
1 MayTue2:36 pm9.4 ft
2 MayWed2:52 am10.7 ft
2 MayWed3:29 pm9.1 ft

8–12 October 2029

Date High water Height
8 OctMon12:13 pm10.9 ft
9 OctTue12:44 am10.0 ft
9 OctTue1:01 pm11.2 ft
10 OctWed1:34 am9.9 ft
10 OctWed1:52 pm11.2 ft
11 OctThu2:26 am9.7 ft
11 OctThu2:44 pm11.1 ft
12 OctFri3:20 am9.4 ft
12 OctFri3:39 pm10.7 ft

5–9 November 2029

Date High water Height
5 NovMon9:59 am10.8 ft
5 NovMon10:33 pm9.6 ft
6 NovTue10:50 am11.2 ft
6 NovTue11:25 pm9.7 ft
7 NovWed11:40 am11.3 ft
8 NovThu12:16 am9.6 ft
8 NovThu12:32 pm11.3 ft
9 NovFri1:08 am9.5 ft
9 NovFri1:25 pm11.0 ft

17–21 May 2030

Date High water Height
17 MayFri11:58 am9.5 ft
18 MaySat12:15 am11.2 ft
18 MaySat12:51 pm9.6 ft
19 MaySun1:06 am11.3 ft
19 MaySun1:43 pm9.7 ft
20 MayMon1:59 am11.2 ft
20 MayMon2:37 pm9.6 ft
21 MayTue2:54 am11.0 ft
21 MayTue3:31 pm9.5 ft

15–19 June 2030

Date High water Height
15 JunSat11:40 am9.3 ft
15 JunSat11:56 pm11.2 ft
16 JunSun12:33 pm9.4 ft
17 JunMon12:49 am11.2 ft
17 JunMon1:26 pm9.5 ft
18 JunTue1:42 am11.1 ft
18 JunTue2:18 pm9.6 ft
19 JunWed2:35 am10.7 ft
19 JunWed3:11 pm9.6 ft

25–29 November 2030

Date High water Height
25 NovMon10:48 am11.0 ft
25 NovMon11:24 pm9.4 ft
26 NovTue11:39 am11.2 ft
27 NovWed12:15 am9.5 ft
27 NovWed12:31 pm11.2 ft
28 NovThu1:08 am9.5 ft
28 NovThu1:25 pm11.0 ft
29 NovFri2:02 am9.5 ft
29 NovFri2:20 pm10.7 ft

King tides already past

31 December – 2 January 2026

Date High water Height
31 DecWed8:42 pm8.3 ft
1 JanThu9:00 am10.3 ft
1 JanThu9:40 pm8.4 ft
2 JanFri9:56 am10.6 ft
2 JanFri10:36 pm8.6 ft

17–21 May 2026

Date High water Height
17 MaySun12:35 pm9.2 ft
18 MayMon12:49 am11.1 ft
18 MayMon1:27 pm9.2 ft
19 MayTue1:41 am11.1 ft
19 MayTue2:20 pm9.2 ft
20 MayWed2:35 am11.0 ft
20 MayWed3:15 pm9.1 ft
21 MayThu3:31 am10.6 ft
21 MayThu4:11 pm9.1 ft

14–18 June 2026

Date High water Height
14 JunSun11:23 am8.8 ft
14 JunSun11:38 pm11.0 ft
15 JunMon12:17 pm9.0 ft
16 JunTue12:31 am11.1 ft
16 JunTue1:10 pm9.1 ft
17 JunWed1:25 am11.1 ft
17 JunWed2:03 pm9.2 ft
18 JunThu2:19 am10.9 ft
18 JunThu2:57 pm9.3 ft