Climatological Report (Monthly)
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
782
CXGM50 PGUM 040701
CLMGUM
CLIMATE REPORT
NATIONAL WEATHER SERVICE TIYAN GUAM
501 PM CHST WED JUN 04 2025
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...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR THE MONTH OF MAY 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 05/30/1971
LOW 70 05/23/1951
05/03/1993
HIGHEST 91 05/24 90 05/17
LOWEST 75 05/11 75 05/03
05/24
AVG. MAXIMUM 88.7 88.6 0.1 87.4
AVG. MINIMUM 77.9 77.8 0.1 77.8
MEAN 83.3
DAYS MAX >= 90 3 8.7 -5.7 1
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 31.15 2023 (02W TYPHOON MAWAR 24.71")
MINIMUM 0.40 1987
TOTALS 1.98 4.45 -2.47 3.82
DAILY AVG. 0.06 0.14 -0.08 0.12
DAYS >= .01 21 19.7 1.3 21
DAYS >= .10 9 9.4 -0.4 8
DAYS >= .50 0 2.3 -2.3 1
DAYS >= 1.00 0 0.7 -0.7 1
DAYS >= 3.00 0
GREATEST
24 HR. TOTAL 0.24 05/27 TO 05/27 1.93 05/23
DEGREE DAYS
COOLING TOTAL 576 564 12 555
SINCE 1/1 2564 2512 52 2482
FREEZE DATES
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WIND (MPH)
AVERAGE WIND SPEED 10.3
RESULTANT WIND SPEED/DIRECTION 10/090
HIGHEST WIND SPEED/DIRECTION 24/070 DATE 05/18
HIGHEST GUST SPEED/DIRECTION 38/070 DATE 05/14
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.27
NUMBER OF DAYS FAIR 27
NUMBER OF DAYS PC 4
NUMBER OF DAYS CLOUDY 0
AVERAGE RH (PERCENT) 73
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 0 HEAVY RAIN 3
RAIN 4 LIGHT RAIN 25
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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