Station Name: Honolulu
Data Source: NOAA Tides and Currents

Elevation Above Sea Level: 0 feet

Sensor Depth: -5 feet

Nearest Address:
Aloha Tower Drive
Honolulu, HI 96850
Honolulu County

GPS Coordinates: 21.303, -157.865

Nearby Water Temperatures

Flood Watch issued March 21 at 3:53AM HST until March 22 at 6:00PM HST by NWS Honolulu HI

Effective: Sat March 21, 2026, 3:53 AM
Expires: Sat March 21, 2026, 6:00 PM

...FLOOD WATCH IN EFFECT THROUGH SUNDAY AFTERNOON FOR ALL ISLANDS IN THE STATE OF HAWAII... * WHAT...Flash flooding caused by excessive rainfall is possible. * WHERE...The island of Oahu, Molokai, Lanai, Kahoolawe, Maui, and the Big Island. * WHEN...Through Sunday afternoon. * IMPACTS...Significant flooding may occur due to the overflow of streams and drainages. Roads in several areas may be closed, along with property damage in urban or low lying spots due to runoff. Landslides may also occur in areas with steep terrain. * ADDITIONAL DETAILS... - A kona low developing west of the islands will draw abundant moisture northward as it strengthens and eventually departs to north early next week. Several rounds of moderate to heavy rainfall are anticipated. The heaviest rain is expected to last through tonight, except for the Big Island where the heaviest rain is expected on Sunday.

You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.

High Surf Advisory issued March 21 at 3:07AM HST until March 22 at 6:00AM HST by NWS Honolulu HI

Effective: Sat March 21, 2026, 3:07 AM
Expires: Sat March 21, 2026, 4:15 PM

...HIGH SURF ADVISORY FOR NORTH FACING SHORES OF NIIHAU KAUAI AND OAHU... .A northerly swell is building in and will create large surf for north facing shores peaking Saturday afternoon and then slowly declining Saturday night. * WHAT...Large breaking waves of 12 to 16 feet. * WHERE...North shores of Niihau, Kauai, and Oahu. * WHEN...From 6 AM this morning to 6 AM HST Sunday. * IMPACTS...Moderate. Strong breaking waves and strong currents will make swimming dangerous.

Heed all advice from ocean safety officials. When in doubt, don't go out.

Flood Watch issued March 21 at 4:56PM HST until March 22 at 6:00PM HST by NWS Honolulu HI

Effective: Sat March 21, 2026, 4:56 PM
Expires: Sun March 22, 2026, 7:00 AM

...FLOOD WATCH CONTINUES FOR OAHU MOLOKAI MAUI LANAI KAHOOLAWE AND THE BIG ISLAND... * WHAT...Flash flooding caused by excessive rainfall is possible. * WHERE...Oahu, Maui, Molokai, Lanai, Kahoolawe, and the Big Island. * WHEN...Through Sunday afternoon. * IMPACTS...Significant flooding may occur due to the overflow of streams and drainages. Roads in several areas may be closed, along with property damage in urban or low lying spots due to runoff. Landslides may also occur in areas with steep terrain. * ADDITIONAL DETAILS... - A kona low west of the islands has drawn abundant moisture northward. Rounds of moderate to heavy rainfall are anticipated. The heaviest rain is expected to last through tonight, except for the Big Island where the heaviest rain is expected Sunday.

You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.

High Surf Advisory issued March 21 at 3:13PM HST until March 22 at 6:00AM HST by NWS Honolulu HI

Effective: Sat March 21, 2026, 3:13 PM
Expires: Sun March 22, 2026, 4:15 AM

...HIGH SURF ADVISORY FOR NORTH FACING SHORES OF NIIHAU KAUAI AND OAHU... .A northerly swell will continue to produce borderline advisory level surf for north-facing shores through the rest of this evening, then gradually decline overnight. * WHAT...Large breaking waves of 10 to 15 feet. * WHERE...North facing shores of Niihau, Kauai, and Oahu. * WHEN...Until 6 AM HST Sunday. * IMPACTS...Moderate. Strong breaking waves and strong currents will make swimming dangerous.

Heed all advice from ocean safety officials. When in doubt, don't go out.