


Tide Report
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
570 SOGM40 PGUM 191610 TIDGUM GUAM CLIMATE AND TIDE DATA NATIONAL WEATHER SERVICE TIYAN GU 209 AM CHST SUN JUL 20 2025 FOR GUAM INTERNATIONAL AIRPORT: RAINFALL YESTERDAY...... 0.28 INCHES MONTH TO DATE........... 6.11 INCHES YEAR TO DATE............ 35.34 INCHES TODAY JULY 20 2025 SUNRISE 6:03 AM CHST SUNSET 6:52 PM CHST TOMORROW JULY 21 2025 SUNRISE 6:03 AM CHST SUNSET 6:51 PM CHST MOON PHASE: WANING CRESCENT, 33% ILLUMINATED (COURTESY OF US NAVAL OBSERVATORY) ASTRONOMICAL TIDE PREDICTIONS FOR APRA HARBOR GUAM (COURTESY OF NOAA`S NATIONAL OCEAN SERVICE) TODAY 2025-07-20 LOW TIDE 0.1 FEET AT 9:41 AM HIGH TIDE 2.2 FEET AT 5:09 PM LOW TIDE 1.8 FEET AT 9:24 PM TOMORROW 2025-07-21 HIGH TIDE 2.7 FEET AT 2:51 AM LOW TIDE -0.1 FEET AT 10:40 AM HIGH TIDE 2.4 FEET AT 6:23 PM LOW TIDE 2.0 FEET AT 10:45 PM $$