Tide Report
Issued by NWS Tiyan, Guam

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372
SOGM40 PGUM 181605
TIDGUM

GUAM CLIMATE AND TIDE DATA
NATIONAL WEATHER SERVICE TIYAN GU
204 AM CHST TUE AUG 19 2025

FOR GUAM INTERNATIONAL AIRPORT:

RAINFALL YESTERDAY......  0.41 INCHES
MONTH TO DATE...........  7.32 INCHES
YEAR TO DATE............ 49.54 INCHES

TODAY    AUGUST 19 2025 SUNRISE 6:09 AM CHST SUNSET 6:40 PM CHST
TOMORROW AUGUST 20 2025 SUNRISE 6:09 AM CHST SUNSET 6:40 PM CHST

MOON PHASE: WANING CRESCENT, 24% ILLUMINATED
(COURTESY OF US NAVAL OBSERVATORY)

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

TODAY 2025-08-19
HIGH TIDE 2.4 FEET AT  2:28 AM
LOW TIDE -0.2 FEET AT 10:28 AM
HIGH TIDE 2.4 FEET AT  6:19 PM
 LOW TIDE 1.9 FEET AT 11:04 PM

TOMORROW 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

$$