Climatological Report (Daily)
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
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207
CDGM40 PGUM 271618
CLIGUM
CLIMATE REPORT
NATIONAL WEATHER SERVICE TIYAN GUAM
218 AM CHST THU AUG 28 2025
...................................
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR AUGUST 27 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 1:39 PM 91 1999 87 1 89
2016
MINIMUM 79 12:05 AM 66 1983 76 3 77
AVERAGE 84 82 2 83
PRECIPITATION (IN)
YESTERDAY T 3.92 1974 0.58 -0.58 0.22
MONTH TO DATE 12.06 15.38 -3.32 12.57
SINCE JUN 1 38.55 34.14 4.41 28.08
SINCE JAN 1 54.28 54.35 -0.07 44.95
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 19 17 2 18
MONTH TO DATE 464 459 5 469
SINCE JUN 1 1498 1553 -55 1546
SINCE JAN 1 4062 4065 -3 4027
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 10 RESULTANT WIND DIRECTION E (110)
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION SE (120)
HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION SE (120)
AVERAGE WIND SPEED 10.5
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
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 2019
MINIMUM TEMPERATURE (F) 76 63 1983
SUNRISE AND SUNSET
AUGUST 28 2025........SUNRISE 6:09 AM CHST SUNSET 6:35 PM CHST
AUGUST 29 2025........SUNRISE 6:09 AM CHST SUNSET 6:34 PM CHST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$