Climatological Report (Daily)
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
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CDGM40 PGUM 290630
CLIGUM
CLIMATE REPORT
NATIONAL WEATHER SERVICE TIYAN GUAM
430 PM CHST FRI AUG 29 2025
...................................
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR AUGUST 29 2025...
VALID TODAY AS OF 0400 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 89 1:52 PM 91 2014 87 2 86
MINIMUM 81 8:01 AM 68 1979 76 5 77
AVERAGE 85 82 3 82
PRECIPITATION (IN)
TODAY 0.05 5.91 1997 0.58 -0.53 0.57
MONTH TO DATE 12.36 16.53 -4.17 13.41
SINCE JUN 1 38.85 35.29 3.56 28.92
SINCE JAN 1 54.58 55.50 -0.92 45.79
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 20 17 3 17
MONTH TO DATE 502 493 9 505
SINCE JUN 1 1536 1587 -51 1582
SINCE JAN 1 4100 4099 1 4063
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 13 RESULTANT WIND DIRECTION E (90)
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION E (80)
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION E (70)
AVERAGE WIND SPEED 13.2
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 88 8:00 AM
LOWEST 68 1:00 PM
AVERAGE 78
..........................................................
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 87 91 2016
MINIMUM TEMPERATURE (F) 76 65 1983
SUNRISE AND SUNSET
AUGUST 29 2025........SUNRISE 6:09 AM CHST SUNSET 6:34 PM CHST
AUGUST 30 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.
$$