Climatological Report (Daily)
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
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793
CDGM40 PGUM 081607
CLIGUM
CLIMATE REPORT
NATIONAL WEATHER SERVICE TIYAN GUAM
207 AM CHST SAT AUG 09 2025
...................................
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR AUGUST 8 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 87 3:54 PM 93 1991 87 0 88
MINIMUM 78 5:54 AM 71 1967 77 1 77
AVERAGE 83 82 1 83
PRECIPITATION (IN)
YESTERDAY T 2.61 2012 0.57 -0.57 0.01
MONTH TO DATE 4.33 4.30 0.03 6.14
SINCE JUN 1 30.82 23.06 7.76 21.65
SINCE JAN 1 46.55 43.27 3.28 38.52
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 18 17 1 18
MONTH TO DATE 137 136 1 137
SINCE JUN 1 1171 1230 -59 1214
SINCE JAN 1 3735 3742 -7 3695
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 5 RESULTANT WIND DIRECTION E (110)
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION E (100)
HIGHEST GUST SPEED MM HIGHEST GUST DIRECTION MM
AVERAGE WIND SPEED 5.1
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 94 3:00 AM
LOWEST 70 4:00 PM
AVERAGE 82
..........................................................
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 87 91 1986
1987
1994
MINIMUM TEMPERATURE (F) 77 73 1952
SUNRISE AND SUNSET
AUGUST 9 2025........SUNRISE 6:07 AM CHST SUNSET 6:45 PM CHST
AUGUST 10 2025........SUNRISE 6:07 AM CHST SUNSET 6:45 PM CHST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$