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 3:10 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
0.1ft
rising · Station 1630000
Next high tide
8:25 PM
Wed, Aug 122.6 ft
Next low tide
1:46 AM
Thu, Aug 131.5 ft
Current Weather
88°F

Mostly Clear

Observed

WSW 16 mph

Observed
Tide Forecast
NOAA APRA HARBOR, GUAM · Station 1630000 · MLLW datum · local time
currentOfficial NOAA curve
-2 ft-0.5 ft1 ft2.5 ft4 ft2.6 ft1.5 ft2.8 ft-0.3 ft2.6 ft1.3 ft2.7 ft-0.0 ftWed, Aug 123:00 PMThu, Aug 133:00 AMThu, Aug 133:00 PMFri, Aug 143:00 AMFri, Aug 143:00 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

Temperature88°FObserved

Humidity70%Observed

Pressure1010 mbObserved

Wind

SustainedWSW 16 mphObserved

Gusts23 mphObserved

Rain chance16%Model

Marine

Wave height0.0 ftModel

DirectionCalm / No DirectionModel

Water87.3°FObservedNOAA Apra Harbor, Guam · At Station
Sun & Moon

Sunrise6:08 AM

Sunset6:45 PM

MoonWaning Crescent

Hourly Forecast
Model
National Weather Service point forecast when the live feed is available.
Local date & timeConditionsTempWindGustsRain
Wed, Aug 12, 20263:00 PMIsolated Rain Showers86°FWSW 15 mph22 mph16%
Wed, Aug 12, 20264:00 PMIsolated Rain Showers85°FWSW 15 mph22 mph16%
Wed, Aug 12, 20265:00 PMIsolated Rain Showers85°FWSW 15 mph18 mph16%
Wed, Aug 12, 20266:00 PMIsolated Rain Showers84°FWSW 15 mph17 mph9%
Wed, Aug 12, 20267:00 PMIsolated Rain Showers84°FWSW 15 mph16 mph9%
Wed, Aug 12, 20268:00 PMIsolated Rain Showers83°FWSW 10 mph15 mph9%
Wed, Aug 12, 20269:00 PMIsolated Rain Showers82°FWSW 10 mph14 mph9%
Wed, Aug 12, 202610:00 PMIsolated Rain Showers82°FWSW 10 mph14 mph9%
Wed, Aug 12, 202611:00 PMIsolated Rain Showers81°FWSW 10 mph14 mph9%
Thu, Aug 13, 202612:00 AMIsolated Rain Showers80°FWSW 10 mph14 mph9%
Thu, Aug 13, 20261:00 AMIsolated Rain Showers80°FWSW 10 mph13 mph9%
Thu, Aug 13, 20262:00 AMIsolated Rain Showers79°FWSW 10 mph13 mph9%

Fishing, Crabbing & Surfing Analysis

Transparent environmental scores based on tide, wind and marine conditions. These are not user reports, catch guarantees or substitutes for official closures and safety guidance.

72/100 · Good
Fishing
Environmental planning guidance, not a catch guarantee.

Best planning window

2 hours around the next tide change

  • Moderate wind16 mph sustained wind
  • Mostly dry16% 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 exchange3.2 ft range in the next cycle
11/100 · 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 period9s dominant period
  • Strong local wind16 mph may reduce surface quality
  • 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 Wed, Aug 12 at 3:10 PM

National Weather Service observation and hourly forecastofficial-forecast

Fetched Wed, Aug 12 at 3:11 PM

National Weather Service coastal marine gridofficial-forecast

Fetched Wed, Aug 12 at 3:11 PM

NOAA CO-OPS water temperature at Apra Harbor, Guamobserved

Fetched Wed, Aug 12 at 3:10 PM

U.S. Naval Observatory astronomical applicationsofficial-calculation

Fetched Wed, Aug 12 at 3:11 PM

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