Because of Guam's
geographical location, a generally favorable tropical climate prevails
throughout the year. The island enjoys only two major seasons:
the "dry season" which begins in the cool month of December through
the mid summer month of June. The "wet or rainy season" follows
thereafter. Temperature throughout the year generally fluctuates
between the 70s and 90s. The summer months of May and June are
the warmest while December is the coolest. Guam rainfall
averages 100 inches per year. The current
weather on Guam:
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