Abnormal Seasons Duration in Indonesia Currently, I lives in Indonesia. Unlike other countries, there are just two seasons here in a year. Those are dry season and rainy season. Generally, the dry season occur between April and October month, and the rainy season occur between October and April month. In the last year, the rainy season was started late about 1-2 months. The long dry season was causing so many woods burned away. It was also causing smog in some cities. People were using masker to do their outdoor activities. Another bad thing is, it is seem that the rainy season in this year will start earlier than it should.