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Guam May Weather

Averages and records for weather in Guam in the month of May.

Typical Guam May Weather 1991–2020
Average daily high	88.6 °F
Average daily low	77.8 °F
Average monthly precipitation	4.3 inches
Average monthly snow	none
Daily chance of precipitation	62.0%
Daily chance of snow	0%

Guam May Weather Records 1945–2024
Highest temperature	94 °F	May 30, 1971
Lowest temperature	70 °F	May 3, 1993
Highest daily low	83 °F	May 27, 2018
Lowest daily high	79 °F	May 21, 1976
Hottest average high temperature	91.3 °F	1987
Coldest average high temperature	84.3 °F	1974
Most daily precipitation	18.5 inches	May 21, 1976
Most monthly precipitation	34.7 inches	1976
Most daily snow	none	-
Most monthly snow	none	-

Note: Daily averages are a moving average which includes 14 days before and after

Day	Average (°F)		Record (°F)
Day	High	Low	High	Low
May 1	88.3	77.5	91	72
May 2	88.4	77.5	92	72
May 3	88.4	77.6	91	70
May 4	88.4	77.6	92	71
May 5	88.4	77.6	93	73
May 6	88.4	77.6	92	71
May 7	88.4	77.6	92	72
May 8	88.4	77.7	92	73
May 9	88.4	77.7	91	72
May 10	88.5	77.7	92	71
May 11	88.5	77.7	92	72
May 12	88.5	77.7	92	71
May 13	88.5	77.8	92	72
May 14	88.6	77.8	93	73
May 15	88.6	77.8	92	74
May 16	88.6	77.8	92	73
May 17	88.6	77.8	91	72
May 18	88.7	77.8	92	74
May 19	88.7	77.8	92	74
May 20	88.7	77.8	92	73
May 21	88.7	77.8	92	74
May 22	88.7	77.8	93	73
May 23	88.7	77.8	92	70
May 24	88.7	77.8	92	73
May 25	88.7	77.8	92	73
May 26	88.7	77.9	93	72
May 27	88.7	77.9	93	71
May 28	88.7	78.0	92	74
May 29	88.7	78.0	92	73
May 30	88.7	78.0	94	72
May 31	88.7	78.0	93	72

Weather Station Details

Years	Station	Coordinates
1945–2024	Guam International Airport	location