Climate Guam Island
The climate in Guam is tropical and warm all year round. The humidity is 66 percent, from November to March somewhat lower. The average annual temperature is 27°C. The whole year a wind blows from the east.
The dry season runs from January to May, the rainy season from July to November.
The climatic conditions are good all year round. High season on the island is during the Japanese holidays: Christmas, Golden Week (late April/early May) and Obon (August).