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What is the climate like in Guam?

The climate of Guam has an average yearly temperature of 31°C. Throughout the year, the average monthly temperature can drop to 30°C and rise to 32°C.

Annually, about 2244 mm of rain falls. This gives a good overview of how much rain to expect in Guam.

The best time to visit Guam is February and March. During this period, you will experience pleasant temperatures and not too much rain, making it ideal to visit Guam.

Temperature 30 to 32°C
Rain 2244 mm

GoodStarStarStarStar

The sky was clear and there were beautiful sunsets.... more

Amber Maarleveld

GoodStarStarStarStar

All in all, a great experience.... more

Olaf

The climate of Guam
  • Average yearly temperature: 31°C
  • Highest temperature: 32°C in May and June
  • Lowest temperature: 30°C in January and February
  • Rainfall: 2244 mm per year, averaging 187 mm by month
  • Driest months: 60 mm in March, 81 mm in February and 92 mm in April
  • Wettest months: 355 mm in August, 335 mm in October and 331 mm in September

Climate table Guam

The climate table for Guam shows the average temperatures, rainfall, and UV index by month.

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daytime temperature (°C) 30 30 31 31 32 32 31 31 31 31 31 31
Nighttime temperature (°C) 25 25 25 26 27 27 26 26 26 26 26 26
Rainfall (mm) 134 81 60 92 153 129 280 355 331 335 171 123
UV Index 5 6 6 6 7 6 7 5 5 5 5 6
Best month No Yes Yes No No No No No No No No No

Temperature by month in Guam

This graph shows the average high temperatures in degrees Celsius for each month in Guam

Temperature by month in Guam

Rainfall by month in Guam

This graph shows the average monthly rainfall in millimeters in Guam.

Rainfall by month in Guam

UV index by month in Guam

This graph shows the average UV index by month in Guam.

UV index by month in Guam

Yearly temperature in Guam

This graph shows the average yearly temperature in Guam, measured in degrees Celsius.

Yearly temperature in Guam

Yearly total rainfall in Guam

This graph shows the average yearly rainfall in millimeters in Guam.

Rainfall per year in Guam

Weather experiences in Guam

The weather in Guam is rated an average of 4 out of 5 stars by 11 visitors.

Write your own review
Weather Experience: Good StarStarStarStar

The sky was clear and there were beautiful sunsets.— This text has been automatically translated into English

Weather Experience: Good StarStarStarStar

All in all, a great experience.— This text has been automatically translated into English

Weather Experience: Good StarStarStarStar

The heat was intense, but the many hours of sunshine made up for it. It rained several days, which cooled it down a bit. In short: beautiful weather!— This text has been automatically translated into English

Weather Experience: Good StarStarStarStar

For an unashamed sun worshipper, the brilliant sun was heavenly and the evenings remained surprisingly warm. The sun shone constantly, but sometimes thunderstorms played against us.— This text has been automatically translated into English

Weather Experience: Good StarStarStarStar

Regular rainfall caused some inconvenience, but fortunately this was short-lived.— This text has been automatically translated into English

Weather Experience: Good StarStarStarStar

The evenings cooled off pleasantly and provided a good night's sleep. There were occasional tropical showers, but they were brief and refreshing.— This text has been automatically translated into English

Weather Experience: Good StarStarStarStar

It was tropically warm, perfect for the beach and outdoor activities. In the evening it was pleasantly cool.— This text has been automatically translated into English

Weather Experience: Good StarStarStarStar

It was hot, averaging 30 degrees, but not too hot. The light rain was pleasant and refreshing. The perfect escape from the winter cold!— This text has been automatically translated into English

Weather Experience: Good StarStarStarStar

Tropical temperatures that may even rise and occasional showers. In short, wonderful weather!— This text has been automatically translated into English

Weather Experience: Good StarStarStarStar

Not too hot, not too chilly. There will be isolated, brief showers. Ideal for anyone who likes a mild, humid climate.— This text has been automatically translated into English

Weather Experience: Good StarStarStarStar

A wonderful combination of sunshine and some rain with temperatures around 28 degrees Celsius. Ideal for anyone who loves a warm Christmas. One small downside, it gets dark quite early.— This text has been automatically translated into English

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Average weather in Guam by month

Click on a month below to see in detail how the weather typically is in Guam and what to expect. Based on the historical weather data of Guam, you can view the average temperature, rainfall, wind, and UV index for each day of the month.