690  
SOGM40 PGUM 130630  
TIDGUM  
 
GUAM CLIMATE AND TIDE DATA  
NATIONAL WEATHER SERVICE TIYAN GU  
428 PM CHST SUN SEP 13 2026  
 
FOR GUAM INTERNATIONAL AIRPORT:  
 
RAINFALL SO FAR TODAY... 0.57 INCHES  
MONTH TO DATE........... 8.34 INCHES  
YEAR TO DATE............100.37 INCHES  
 
TODAY SEPTEMBER 13 2026 SUNRISE 6:10 AM CHST SUNSET 6:24 PM CHST  
TOMORROW SEPTEMBER 14 2026 SUNRISE 6:10 AM CHST SUNSET 6:23 PM CHST  
 
MOON PHASE: WAXING CRESCENT, 5% ILLUMINATED  
(COURTESY OF US NAVAL OBSERVATORY)  
 
ASTRONOMICAL TIDE PREDICTIONS FOR APRA HARBOR GUAM  
(COURTESY OF NOAA'S NATIONAL OCEAN SERVICE)  
 
TODAY 2026-09-13  
HIGH TIDE 2.4 FEET AT 8:54 PM  
 
TOMORROW 2026-09-14  
LOW TIDE 0.4 FEET AT 3:31 AM  
HIGH TIDE 2.3 FEET AT 9:41 AM  
LOW TIDE 1.0 FEET AT 3:41 PM  
HIGH TIDE 2.4 FEET AT 9:17 PM  
 
TUESDAY 2026-09-15  
LOW TIDE 0.3 FEET AT 4:08 AM  
HIGH TIDE 2.2 FEET AT 10:36 AM  
 
 
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