694
CXGM50 PGUM 050704
CLMGUM
CLIMATE REPORT
NATIONAL WEATHER SERVICE TIYAN GUAM
504 PM CHST FRI SEP 05 2025
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...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR THE MONTH OF AUGUST 2025...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1945 TO 2025
WEATHER OBSERVED NORMAL DEPART LAST YEAR'S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
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TEMPERATURE (F)
RECORD
HIGH 94 08/30/1994
08/06/1994
LOW 70 08/15/1989
08/22/1886
08/13/1967
HIGHEST 90 08/18 89 08/24
08/27
08/28
LOWEST 74 08/19 74 08/17
08/22
08/30
AVG. MAXIMUM 87.1 87.2 -0.1 87.6
AVG. MINIMUM 76.6 76.5 0.1 76.7
MEAN 81.8
DAYS MAX >= 90 1 4.5 -3.5 0
DAYS MAX <= 32 0 0.0 0.0 0
DAYS MIN <= 32 0 0.0 0.0 0
DAYS MIN <= 0 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 37.32 2004 (7.52" DURING TY CHABA)
MINIMUM 3.91 1965
TOTALS 13.06 17.66 -4.60 14.84
DAILY AVG. 0.42 0.57 -0.15 0.48
DAYS >= .01 27 25.9 1.1 25
DAYS >= .10 20 19.2 0.8 19
DAYS >= .50 12 9.7 2.3 11
DAYS >= 1.00 4 5.2 -1.2 4
DAYS >= 3.00 0 1
GREATEST
24 HR. TOTAL 1.58 08/07 TO 08/07 3.65 08/02
DEGREE DAYS
COOLING TOTAL 531 522 9 540
SINCE 1/1 4129 4128 1 4098
FREEZE DATES
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WIND (MPH)
AVERAGE WIND SPEED 6.6
RESULTANT WIND SPEED/DIRECTION 5/090
HIGHEST WIND SPEED/DIRECTION 24/050 DATE 08/21
HIGHEST GUST SPEED/DIRECTION 36/080 DATE 08/18
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.30
NUMBER OF DAYS FAIR 22
NUMBER OF DAYS PC 9
NUMBER OF DAYS CLOUDY 0
AVERAGE RH (PERCENT) 82
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 3 HEAVY RAIN 15
RAIN 16 LIGHT RAIN 31
FOG 0 HAZE 0
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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