Indonesia has a tropical climate. The east monsoon from June to September is generally dry, while the west monsoon from December to March is the wet season. The transitional periods between these two seasons are characterised by occasional rain showers, but even in the middle of the wet season, temperatures range from 21° C (70° F) to 33° C. (90° F) except at higher altitudes which are cooler. The Heaviest rainfall is normally in December and January. Humidity is between 60 to 100%