Climatological Report (Daily)
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
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CDGM40 PGUM 151614
CLIGUM
CLIMATE REPORT
NATIONAL WEATHER SERVICE TIYAN GUAM
214 AM CHST SAT AUG 16 2025
...................................
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR AUGUST 15 2025...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1945 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 88 12:46 PM 91 1966 87 1 88
MINIMUM 76 4:56 AM 70 1989 77 -1 76
AVERAGE 82 82 0 82
PRECIPITATION (IN)
YESTERDAY T 9.64 2015 0.61 -0.61 0.05
MONTH TO DATE 6.64 8.51 -1.87 6.98
SINCE JUN 1 33.13 27.27 5.86 22.49
SINCE JAN 1 48.86 47.48 1.38 39.36
DEGREE DAYS
HEATING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE JUN 1 0 0 0 0
SINCE JUL 1 0 0 0 0
COOLING
YESTERDAY 17 17 0 17
MONTH TO DATE 261 255 6 261
SINCE JUN 1 1295 1349 -54 1338
SINCE JAN 1 3859 3861 -2 3819
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 2 RESULTANT WIND DIRECTION NE (50)
HIGHEST WIND SPEED 9 HIGHEST WIND DIRECTION N (350)
HIGHEST GUST SPEED MM HIGHEST GUST DIRECTION MM
AVERAGE WIND SPEED 3.6
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
RAIN
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 12:00 AM
LOWEST 70 1:00 PM
AVERAGE 80
..........................................................
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 87 91 1966
MINIMUM TEMPERATURE (F) 77 70 1949
SUNRISE AND SUNSET
AUGUST 16 2025........SUNRISE 6:08 AM CHST SUNSET 6:42 PM CHST
AUGUST 17 2025........SUNRISE 6:08 AM CHST SUNSET 6:41 PM CHST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$