Climate comparison

Colors of the following climate diagrams:
Guam
United States

Daily maximum temperatures

The highest daytime temperatures in Guam are reached in June with an average of 31.8 °C. The coldest month, on the other hand, is January, with an average of just 30.1 °C. In the United States, July is the warmest month, with 30.8 °C. There, it is coolest in January with an average of 6.0 °C.

Night time lows

At night, it cools down to varying degrees depending on the country and altitude. In Guam, temperatures drop as low as 24.1 °C in February. The warmest nights are in June at 26.0 °C. In the United States, it is coolest at night in January at -4.2 °C and warmest in July at 18.8 °C. This corresponds to a cooling of 5.6 to 6.3 °C in Guam and 9.8 to 12.5 °C in the United States.

Rain days per month

By definition, a rain day is a day on which at least 0.1 liters of precipitation per m² fall. This corresponds to a 1 square meter puddle in which the water stands 0.1 mm high — insofar as the water does not seep away or evaporate. So it does not have to rain all day long. October brings the most rainy days (23.0) in Guam. With an average of only 11.4 days, February is the friendliest. In the United States, it rains most often in May with 8.3 days.

Precipitation amount per day

Depending on the season and the location of a country, the wind brings a varying amount of water with it. As a rule, the water evaporating in the oceans is absorbed and then transported inland. The greatest amount of rain (hail or dew are also forms of precipitation) in Guam occurs in September, when about 13.2 liters per square meter fall per day. In the United States, the average amount of precipitation ranges from 1.9 liters per day in January to 3.1 in June. However, these are average values. If you consider that there are only 20.1 rainy days in Guam in September, each of them accounts for about 19.7 liters.

Hours of daylight

The length of a day varies throughout the year and depends on the distance from the equator. In December, the day in Guam is only 11.4 hours long. In June, on the other hand, it is 12.9 hours. In the United States, it is 9.2 hours in December and 15.3 in June.