Guam Weather

Guam Average Weather & Yearly Climate

Average weather in Guam is normally about 20 throughout the year but differs each month.

Weather figures shows that July is the hottest period and January is coldest with average monthly temperatures varying by 25. Average Yearly Temperatures are 20 in Spring (March, April and May) , 32 in Summer and 20 during Autumn and 8 in Winter (Dec – Feb) .

Month Degrees Celsius
January 7
February 9
March 15
April 22
May 22
June 31
July 32
August 32
September 22
October 22
November 15
December 8


What are the Weather Insights, Yearly Temperature, Climate in Guam?

We have collected several historical weather facts and data to help you determine when the best time to visit Guam

  • Typical Average Daily Temperature: 20
  • Typical Hottest Month: July
  • Typical Coldest Month: January
  • Average Spring Temperature: 20
  • Average Summer Temperature: 32
  • Average Autumn Temperature: 20
  • Average Winter Temperature: 8