Climatological Report (Daily)
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
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CDGM40 PGUM 300725
CLIGUM
CLIMATE REPORT
NATIONAL WEATHER SERVICE TIYAN GUAM
525 PM CHST SAT AUG 30 2025
...................................
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR AUGUST 30 2025...
VALID TODAY AS OF 0500 PM LOCAL TIME.
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)
TODAY
MAXIMUM 83 1:17 PM 91 2016 87 -4 87
MINIMUM 74 7:23 AM 65 1983 76 -2 76
AVERAGE 79 82 -3 82
PRECIPITATION (IN)
TODAY 0.62 3.16 1985 0.57 0.05 1.42
MONTH TO DATE 13.04 17.10 -4.06 14.83
SINCE JUN 1 39.53 35.86 3.67 30.34
SINCE JAN 1 55.26 56.07 -0.81 47.21
DEGREE DAYS
HEATING
TODAY 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
TODAY 14 17 -3 17
MONTH TO DATE 515 510 5 522
SINCE JUN 1 1549 1604 -55 1599
SINCE JAN 1 4113 4116 -3 4080
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 5 RESULTANT WIND DIRECTION E (110)
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION S (160)
HIGHEST GUST SPEED 31 HIGHEST GUST DIRECTION NE (50)
AVERAGE WIND SPEED 6.3
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
HEAVY RAIN
RAIN
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 9:00 AM
LOWEST 79 2:00 PM
AVERAGE 88
..........................................................
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 87 91 2009
2016
MINIMUM TEMPERATURE (F) 76 68 1979
SUNRISE AND SUNSET
AUGUST 30 2025........SUNRISE 6:09 AM CHST SUNSET 6:33 PM CHST
AUGUST 31 2025........SUNRISE 6:09 AM CHST SUNSET 6:33 PM CHST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$