Tide Report
Issued by NWS Tiyan, Guam

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632
SOGM40 PGUM 191640
TIDGUM

GUAM CLIMATE AND TIDE DATA
NATIONAL WEATHER SERVICE TIYAN GU
238 AM CHST WED AUG 20 2025

FOR GUAM INTERNATIONAL AIRPORT:

RAINFALL YESTERDAY......  1.24 INCHES
MONTH TO DATE...........  8.61 INCHES
YEAR TO DATE............ 50.83 INCHES

TODAY    AUGUST 20 2025 SUNRISE 6:09 AM CHST SUNSET 6:40 PM CHST
TOMORROW AUGUST 21 2025 SUNRISE 6:09 AM CHST SUNSET 6:39 PM CHST

MOON PHASE: WANING CRESCENT, 15% ILLUMINATED
(COURTESY OF US NAVAL OBSERVATORY)

ASTRONOMICAL TIDE PREDICTIONS FOR APRA HARBOR GUAM
(COURTESY OF NOAA`S NATIONAL OCEAN SERVICE)

TODAY 2025-08-20
HIGH TIDE 2.4 FEET AT  3:44 AM
LOW TIDE -0.2 FEET AT 11:30 AM
HIGH TIDE 2.4 FEET AT  7:04 PM

TOMORROW 2025-08-21
 LOW TIDE 1.7 FEET AT 12:06 AM
HIGH TIDE 2.5 FEET AT  4:55 AM
LOW TIDE -0.2 FEET AT 12:25 PM
HIGH TIDE 2.5 FEET AT  7:41 PM

$$