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Geography
Climate
As in most tropical islands in the western Pacific, the weather on Guam is warm throughout the year with less humidity from November through March. The mean annual temperature near sea level is about 81 F (27.2 C) with monthly means ranging from 80 F (26.7 C) in January to a little over 82 F (27.8 C) in June. Rarely does the temperature exceed 90 F (32.2 C) during the daytime hours or fall below 70 F (21.1 C) at night. The relative humidity commonly exceeds 84 percent at night throughout the year, but the average monthly humidity hovers near 66 per cent.
Guam's climate is characterized by two distinct seasons a dry season from January to May, and a rainy season from July to November: June and December are bansitional months. The mean annual rainfall varies from about 80 inches in the central and coastal lowlands up to 110 inches on the uplands in southern Guam. A wide variation in rainfall can occur from year to year. In 1952, for example, a maximum of 145.5 inches was recorded, while the minimum rainfall recorded was 60.42 inches three years later.
The easterly trade winds, usually between 4 and 12 miles per hour (mph), are dominant throughout the year. Only occasionally do winds exceed 24 mph, except during major tropical storms or typhoons small scale storms, or squalls, can occur at any time and with little notice. The likelihood of typhoons is greatest during July through September, but they can occur during any month of the year.
Land Area
Guam covers an area of 212 square miles (549 square km), and is about 30 miles (48.39 km) in length with a width of 8 1/2 miles (13.71 km) at the northern tip and a maximum width in the south of 11 1/2 miles (18.55 km).
Air Quality
Guam's air quality is one of the cleanest in the world and generally free from Air Pollution despite the high concentration of human activity in Guam's downtown metropolitan area, favorable meteorological conditions, in particular the nearly constant, northeast trade winds, have prevented the build-up of any significant amount of pollutants.
Water Quality
The island's ground water and ocean water resources have the rare advantage of being free from the pollution discharges similar to its neighboring continental land masses. The result Guam's water quality remains consistently pure. Water quality is regularly monitored for compliance with federal and local standards.
As in most tropical islands in the western Pacific, the weather on Guam is warm throughout the year with less humidity from November through March. The mean annual temperature near sea level is about 81 F (27.2 C) with monthly means ranging from 80 F (26.7 C) in January to a little over 82 F (27.8 C) in June. Rarely does the temperature exceed 90 F (32.2 C) during the daytime hours or fall below 70 F (21.1 C) at night. The relative humidity commonly exceeds 84 percent at night throughout the year, but the average monthly humidity hovers near 66 per cent.
Guam's climate is characterized by two distinct seasons a dry season from January to May, and a rainy season from July to November: June and December are bansitional months. The mean annual rainfall varies from about 80 inches in the central and coastal lowlands up to 110 inches on the uplands in southern Guam. A wide variation in rainfall can occur from year to year. In 1952, for example, a maximum of 145.5 inches was recorded, while the minimum rainfall recorded was 60.42 inches three years later.
The easterly trade winds, usually between 4 and 12 miles per hour (mph), are dominant throughout the year. Only occasionally do winds exceed 24 mph, except during major tropical storms or typhoons small scale storms, or squalls, can occur at any time and with little notice. The likelihood of typhoons is greatest during July through September, but they can occur during any month of the year.
Land Area
Guam covers an area of 212 square miles (549 square km), and is about 30 miles (48.39 km) in length with a width of 8 1/2 miles (13.71 km) at the northern tip and a maximum width in the south of 11 1/2 miles (18.55 km).
Air Quality
Guam's air quality is one of the cleanest in the world and generally free from Air Pollution despite the high concentration of human activity in Guam's downtown metropolitan area, favorable meteorological conditions, in particular the nearly constant, northeast trade winds, have prevented the build-up of any significant amount of pollutants.
Water Quality
The island's ground water and ocean water resources have the rare advantage of being free from the pollution discharges similar to its neighboring continental land masses. The result Guam's water quality remains consistently pure. Water quality is regularly monitored for compliance with federal and local standards.
