Average Temperatures and Rainfall for Guam

The average annual temperatures for Guam is 28°C/82°F.

Average annual rainfall for Guam is 2,866mm (113 inches).

What is the warmest or hottest month in Guam?

May is the hottest or warmest month in Guam, with an average maximum temperate of 32°C/90°F.

What is the coldest or coolest month in Guam?

January is the coolest or coldest month in Guam, with an average minimum temperate of 24°C/75°F.

What is the most rainy or wettest month in Guam?

September is the wettest or most rainy month in Guam, with an average rainfall of 484mm (19 inches).

What is the least rainy or driest month in Guam?

March is the driest or least rainy month in Guam, with an average rainfall of 83mm (3 inches).

Average Monthly Temperatures
Average Maximum Temperature Average Minimum Temperature
Average Monthly Rainfall
Compare Guam's climate with other countries
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Climates for other countries
Afghanistan Aland Islands Albania Algeria American Samoa Andorra Argentina Armenia Australia Austria Azerbaijan Bahamas Bahrain Bangladesh Barbados Belarus Belgium Belize Benin Bermuda Bolivia Bosnia and Herzegovina Botswana Brazil Brunei Bulgaria Burkina Faso Cabo Verde Cambodia Cameroon Canada Cayman Islands Central African Republic Chad Chile China Colombia Costa Rica Croatia Cuba Cyprus Czechia Democratic Republic of the Congo Denmark Dominican Republic Ecuador Egypt El Salvador Estonia Ethiopia Faroe Islands Fiji Finland France French Guiana French Polynesia French Southern Territories Gabon Gambia Georgia Germany Ghana Greece Greenland Guadeloupe Guatemala Guernsey Guinea Guinea-Bissau Honduras Hong Kong Hungary Iceland India Indonesia Iran Iraq Ireland Isle of Man Israel Italy Ivory Coast Jamaica Japan Jersey Jordan Kazakhstan Kenya Kiribati Kosovo Kuwait Kyrgyzstan Laos Latvia Lebanon Lesotho Liberia Libya Liechtenstein Lithuania Luxembourg Madagascar Malaysia Maldives Mali Malta Marshall Islands Mauritania Mauritius Mayotte Mexico Micronesia Moldova Monaco Mongolia Montenegro Morocco Mozambique Myanmar Namibia Nepal Netherlands New Zealand Niger Nigeria North Korea North Macedonia Northern Mariana Islands Norway Oman Pakistan Palau Palestinian Territory Peru Philippines Poland Portugal Puerto Rico Qatar Republic of the Congo Reunion Romania Russia Rwanda San Marino Saudi Arabia Senegal Serbia Seychelles Slovakia Slovenia Solomon Islands South Africa South Korea Spain Sri Lanka Sudan Suriname Svalbard and Jan Mayen Sweden Switzerland Syria Taiwan Tajikistan Tanzania Thailand Togo Trinidad and Tobago Tunisia Turkey Turkmenistan Tuvalu U.S. Virgin Islands Ukraine United Arab Emirates United Kingdom United States Uruguay Uzbekistan Vanuatu Vietnam Wallis and Futuna Zimbabwe