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The climate of Guam, city by city

This page lists the 4 cities in Guam for which climate normals are available. Each entry covers temperature, rainfall and how the climate changed between 1940 and 2025, computed from ERA5 reanalysis data.

Average across cities

26.9°C

Annual rainfall

1,878mm

Spread between cities

0°C

Warming

+0.7°C

Departure from normal across the country's largest cities, 1940–2025

Rankings

Across the 4 cities in this country with a measured climate.

The warmest

  1. 1Dededo Village26.9 °C
  2. 2Yigo Village26.9 °C
  3. 3Tamuning-Tumon-Harmon Village26.9 °C
  4. 4Mangilao Village26.9 °C

The coldest

  1. 1Dededo Village26.9 °C
  2. 2Yigo Village26.9 °C
  3. 3Tamuning-Tumon-Harmon Village26.9 °C
  4. 4Mangilao Village26.9 °C

The wettest

  1. 1Yigo Village1,879 mm
  2. 2Dededo Village1,878 mm
  3. 3Tamuning-Tumon-Harmon Village1,878 mm
  4. 4Mangilao Village1,878 mm

Frequently asked questions

What is the hottest city in Guam?

The hottest city in Guam is Dededo Village, with an average annual temperature of 26.9 °C.

What is the coldest city in Guam?

The coldest city in Guam is Dededo Village, with an average annual temperature of 26.9 °C.

What is the wettest city in Guam?

The wettest city in Guam is Yigo Village, with 1,879 mm of precipitation per year.

Has the climate of Guam warmed?

Based on its largest cities, Guam warmed by +0.7 °C between 1940 and 2025.

Cities by region

Dededo1

Mangilao1

Tamuning1

Yigo1