TideAhead
GuamNOAA 1630000

APRA HARBOR, GUAM Tides & Coastal Conditions

Official tide predictions, weather observations and forecasts, marine-grid context, astronomy, and jurisdiction-specific rules for this NOAA station.

All official layers availableUpdated 4:23 PM GMT+10

Current Conditions

Tide predictions are relative to MLLW. NWS point and marine-grid forecasts can differ at exposed shorelines.

Estimated tide now
1.4ft
rising · Station 1630000
Next high tide
7:26 PM
Sat, Sep 262.4 ft
Next low tide
1:41 AM
Sun, Sep 270.6 ft
Current Weather
83°F

Mostly Cloudy

Observed

S 9 mph

Observed
Tide Forecast
NOAA APRA HARBOR, GUAM · Station 1630000 · MLLW datum · local time
currentOfficial NOAA curve
-1 ft0.3 ft1.5 ft2.8 ft4 ft2.4 ft0.6 ft2.4 ft0.6 ft2.5 ft0.3 ft2.4 ft0.9 ftSat, Sep 264:00 PMSun, Sep 274:00 AMSun, Sep 274:00 PMMon, Sep 284:00 AMMon, Sep 284:00 PM
Official NOAA predicted heights relative to MLLW. Times are shown in the place's local timezone.

Weather, Light & Marine

Conditions that affect shoreline access, small craft, fishing and surf.

Air

Temperature83°FObserved

Humidity79%Observed

Pressure1010 mbObserved

Wind

SustainedS 9 mphObserved

Gusts7 mphModel

Rain chance21%Model

Marine

Wave height0.0 ftModel

DirectionCalm / No DirectionModel

WaterUnavailable
Sun & Moon

Sunrise6:11 AM

Sunset6:15 PM

MoonFull Moon

Hourly Forecast
Model
National Weather Service point forecast when the live feed is available.
Local date & timeConditionsTempWindGustsRain
Sat, Sep 26, 20264:00 PMIsolated Rain Showers88°FWNW 5 mph7 mph21%
Sat, Sep 26, 20265:00 PMIsolated Rain Showers88°FWNW 5 mph7 mph21%
Sat, Sep 26, 20266:00 PMIsolated Rain Showers88°FWNW 5 mph6 mph20%
Sat, Sep 26, 20267:00 PMIsolated Rain Showers88°FWNW 5 mph6 mph20%
Sat, Sep 26, 20268:00 PMIsolated Rain Showers88°FWNW 5 mph5 mph20%
Sat, Sep 26, 20269:00 PMIsolated Rain Showers87°FWNW 5 mph5 mph20%
Sat, Sep 26, 202610:00 PMIsolated Rain Showers87°FWNW 5 mph5 mph20%
Sat, Sep 26, 202611:00 PMIsolated Rain Showers87°F 0 mph3 mph20%
Sun, Sep 27, 202612:00 AMIsolated Rain Showers87°F 0 mph3 mph20%
Sun, Sep 27, 20261:00 AMIsolated Rain Showers87°F 0 mph3 mph20%
Sun, Sep 27, 20262:00 AMIsolated Rain Showers86°F 0 mph3 mph20%
Sun, Sep 27, 20263:00 AMIsolated Rain Showers86°F 0 mph3 mph20%

Fishing, Crabbing & Surfing Analysis

These scores use the available tide, wind, and marine data. They do not predict catches, report local activity, or replace safety notices.

84/100 · Very good
Fishing
Environmental planning guidance, not a catch guarantee.

Best planning window

2 hours around the next tide change

  • Manageable wind9 mph sustained wind
  • Mostly dry21% precipitation chance
  • Moving waterA rising tide can improve nearshore feeding activity
69/100 · Good
Crabbing
Conditions are secondary to seasons, closures and safety.

Best planning window

Near slack water, if the marine area is open

  • Regulations requiredConfirm the marine area is open before setting gear
  • Moderate tidal exchange2.1 ft range in the next cycle
23/100 · Poor
Surfing
Offshore model guidance with nearshore uncertainty.

Best planning window

Compare swell direction, local wind and tide before leaving

  • Limited swell0.0 ft NWS forecast waves
  • Short period0s dominant period
  • Nearshore uncertaintyOffshore model conditions are not the same as breaking-wave height at this beach
Guam Division of Aquatic and Wildlife Resources fishing rulesGuam · state or territoryNOAA Fisheries federal recreational fishing resourcesU.S. federal waters · federalNational Weather Service rip-current safetyUnited States · safety
Nearby NOAA Tide Stations
Official station locations from the national NOAA CO-OPS tide-prediction catalog.

Pago Bay, Guam

NOAA 1631428 · GU

9.6 mi

Tanapag Harbor, Saipan Island

NOAA 1633227 · GU

142.9 mi

Laysan Island

NOAA 1619645 · HI

2947.3 mi

MASSACRE BAY

NOAA 9460150 · AK

3141.1 mi

East Island, French Frigate Shoals

NOAA 1619222 · HI

3279.4 mi

Ogliuga Island (east coast)

NOAA 9461081 · AK

3331.2 mi

Sources And Confidence

NOAA CO-OPS tide predictions at APRA HARBOR, GUAMofficial-forecast

Fetched Sat, Sep 26 at 4:23 PM

National Weather Service observation and hourly forecastofficial-forecast

Fetched Sat, Sep 26 at 4:23 PM

National Weather Service coastal marine gridofficial-forecast

Fetched Sat, Sep 26 at 4:23 PM

U.S. Naval Observatory astronomical applicationsofficial-calculation

Fetched Sat, Sep 26 at 4:23 PM

Not for navigation. Conditions can change faster than source update intervals. Always check local warnings, closures and on-site conditions.