Perigee data brief · NOAA CO-OPS predictions
2026 U.S. king tide dates
Across 29 established NOAA reference stations, October contains the annual highest predicted high at 11 locations and June at 8. The most common single peak date is October 27, 2026, shared by 5 representative stations. Use the table for a national view, then open the local calendar before making a shoreline plan.
Analysis by Ryan Cardin · Published
Reference stations
29
One per coastal state, district, or territory
Leading peak month
October
11 representative annual peaks
Most shared date
October 27
Shared by 5 reference stations
State-by-state reference station almanac
Peak times are local to each station. Heights are feet above that station's local MLLW datum; they are not a national flood-risk ranking. Where NOAA maps the station to a state directory, the coast name opens the fuller multi-station calendar.
| Coast | Representative station | Highest predicted high | Height | Other top-tide windows |
|---|---|---|---|---|
| Maine | PORTLANDNOAA 8418150 | 11:57 PM local | 11.7 ft MLLW | May 18–19 · Jun 14–15 · Jun 17 · Jul 14 · Dec 24–25 |
| New Hampshire | Fort PointNOAA 8423898 | 12:05 AM local | 11.1 ft MLLW | May 18–19 · Jun 14 · Jun 16–17 · Nov 26 · Dec 24–25 |
| Massachusetts | BOSTONNOAA 8443970 | 12:07 AM local | 12.0 ft MLLW | May 16 · May 18–19 · Jun 14 · Jun 16–17 · Nov 26 · Dec 25 |
| Rhode Island | NEWPORTNOAA 8452660 | 8:56 PM local | 4.9 ft MLLW | May 16–17 · Jun 14–16 · Jul 13–15 |
| Connecticut | BRIDGEPORTNOAA 8467150 | 11:38 PM local | 8.4 ft MLLW | May 15–16 · May 18 · Jun 13–14 · Jun 16 · Oct 26–27 |
| New York | NEW YORK (The Battery)NOAA 8518750 | 8:16 PM local | 6.2 ft MLLW | May 16–17 · Jun 13–15 · Jul 13–14 · Oct 27 |
| New Jersey | Sandy Hook, Fort HancockNOAA 8531680 | 7:58 PM local | 6.4 ft MLLW | May 16–17 · Jun 13–16 · Jul 13–14 |
| Pennsylvania | PHILADELPHIA, US Coast Guard Station, Pa.NOAA 8545240 | 2:08 AM local | 7.5 ft MLLW | May 16–19 · Jun 14–16 · Jul 14 |
| Delaware | LEWES (BREAKWATER HARBOR)NOAA 8557380 | 9:47 PM local | 5.6 ft MLLW | May 17–18 · Jun 14–16 · Jul 13–14 · Oct 28 |
| Maryland | Baltimore, Fort McHenryNOAA 8574680 | 7:20 AM local | 2.2 ft MLLW | Jun 14–16 · Jul 12–14 · Aug 10–11 |
| Washington, D.C. | WASHINGTON, Washington Channel, D.C.NOAA 8594900 | 8:44 AM local | 3.7 ft MLLW | May 16–18 · Jun 13–16 · Sep 29 |
| Virginia | HAMPTON ROADS (Sewells Point)NOAA 8638610 | 10:20 AM local | 3.5 ft MLLW | Sep 28–30 · Oct 11 · Oct 26–29 |
| North Carolina | WilmingtonNOAA 8658120 | 10:39 AM local | 5.4 ft MLLW | May 16–17 · Oct 10–11 · Oct 26–28 · Nov 8 |
| South Carolina | CHARLESTON (Customhouse Wharf)NOAA 8665530 | 9:06 AM local | 6.9 ft MLLW | May 16–17 · Oct 26–29 · Nov 25–26 |
| Georgia | Fort Pulaski, Savannah River EntranceNOAA 8670870 | 9:15 AM local | 8.9 ft MLLW | May 16–17 · Oct 26–28 · Nov 24–26 |
| Florida | KEY WESTNOAA 8724580 | 11:49 PM local | 2.5 ft MLLW | Sep 30 · Oct 26–28 · Oct 30 · Nov 24–26 |
| Alabama | DAUPHIN ISLANDNOAA 8735180 | 1:11 AM local | 2.0 ft MLLW | Oct 2–3 · Oct 29–30 |
| Mississippi | Pascagoula NOAA LabNOAA 8741533 | 1:34 AM local | 2.3 ft MLLW | Jun 15 · Oct 1–3 · Oct 28 |
| Louisiana | EAST POINT, GRAND ISLENOAA 8761724 | 12:30 AM local | 1.9 ft MLLW | Oct 2–3 · Oct 28 · Oct 30 |
| Texas | GALVESTON, Galveston ChannelNOAA 8771450 | 7:30 PM local | 2.1 ft MLLW | Oct 1 · Oct 3 · Oct 26–29 |
| California | SAN FRANCISCO (Golden Gate)NOAA 9414290 | 10:37 AM local | 7.2 ft MLLW | Jan 2–3 · Jun 14 · Jul 12–13 · Dec 23–25 |
| Oregon | ASTORIA (Tongue Point), Oreg.NOAA 9439040 | 12:40 PM local | 10.6 ft MLLW | Jan 2–3 · Nov 25–26 · Dec 22–25 |
| Washington | SEATTLE (Madison St.), Elliott BayNOAA 9447130 | 7:07 AM local | 13.0 ft MLLW | Jan 4–7 · Dec 25–28 |
| Alaska | JuneauNOAA 9452210 | 12:45 PM local | 19.9 ft MLLW | Jan 3–4 · Oct 27 · Nov 24–26 · Dec 24–25 |
| Hawaiʻi | HONOLULUNOAA 1612340 | 3:54 PM local | 2.7 ft MLLW | Jun 14–15 · Jul 12–14 · Nov 25 · Dec 24 |
| Guam | APRA HARBOR, GUAMNOAA 1630000 | 6:54 AM local | 2.9 ft MLLW | Jun 15–17 · Jul 13–16 · Aug 13 |
| American Samoa | PAGO PAGO Harbor, Tutuila IslandNOAA 1770000 | 7:46 PM local | 3.5 ft MLLW | Jan 2–3 · Jun 15 · Jul 13–14 · Dec 23–25 |
| Puerto Rico | SAN JUANNOAA 9755371 | 10:48 AM local | 2.1 ft MLLW | Oct 27–30 · Nov 24–27 |
| U.S. Virgin Islands | CHARLOTTE AMALIE, ST. THOMAS ISLANDNOAA 9751639 | 11:19 AM local | 1.2 ft MLLW | Oct 3 · Oct 27–30 |
Methodology and limits
One established NOAA reference station per coastal state, district, or territory. King-tide windows are consecutive dates containing the top 1% of that station's predicted high tides for the year. Times are station local; heights are feet above local MLLW.
A station is a representative comparison point, not a statewide maximum. MLLW is local, so heights must not be ranked across stations as a measure of flood risk.
The snapshot was generated directly from NOAA CO-OPS tide predictions. NOAA harmonic predictions describe the astronomical tide in station-local time. Actual water levels can run above or below them because of wind, pressure, waves, river flow, and other weather-driven effects. For datum context, read how MLLW and MSL differ.
Reproducibility: the downloadable CSV identifies every station, date, local time, threshold, coordinate, and linked source page used in the report. The report generator uses the same top-1% calculation as the individual Perigee annual and state calendars.
Questions about the 2026 almanac
When are the biggest king tides in the U.S. in 2026?
In this 29-station NOAA comparison set, October contains the annual highest predicted high at 11 representative stations and June contains it at 8. October 27, 2026 is the most common single peak date, shared by 5 stations. Exact dates vary by coast and inlet.
Is the listed tide the highest tide everywhere in the state?
No. Each row uses one established NOAA reference station as a transparent comparison point. Open the linked state calendar or local station page for the prediction nearest your shoreline.
Can the predicted heights be ranked across states?
No. Heights are measured above each station's local Mean Lower Low Water datum. MLLW is not one shared national zero, and flood impacts also depend on local elevation, weather, waves, and drainage.
Does a king tide prediction guarantee coastal flooding?
No. NOAA harmonic predictions describe the astronomical tide. Wind, atmospheric pressure, waves, rainfall, river flow, and observed water-level departures determine whether a location actually floods.
Related Perigee research
Predicted astronomical peaks are only one part of the coastal record. Compare them with the observed-water-level analysis of where U.S. high-tide flood days grew fastest from 2000 to 2025, or browse all Perigee data reports.