The climate
Split by the equator, Indonesia has a tropical and equatorial climate variable on each island. The equatorial zones crossing Sumatra, Borneo and Celebes are humid and have a short dry season while the tropical areas like Java, Bali and the Lesser Sunda Islands are characterised by an equal turnover of rainy and dry seasons.
The annual weather variations throughout the territory are small. The average temperature ranges between 24 and 26 °C; rarely below 20 °C except in the highlands where it can descend to 10 °C in the morning. Overall, we can say that Indonesia has a clement weather all year round. Even during the rainy season, the sky is typically clear and sunny until mid-day or afternoon.
The dry season normally starts in May and stretches until October but the rain has been coming later in recent years. In 2015, the first rainfall arrived only in the middle of December.