Weather in Indonesia can be divided into two seasons – dry and wet – with warm tropical temperatures in the region of 28°C all through the day, consistently. In many locales, the dry season ranges from May to September, with the downpours falling between October and April.

There are a couple of regional exemptions. In Sumatra, the downpours occur between October and January in the north, and between November and February in the south. The unusual-shaped Sulawesi likewise encounters marginally distinct weather patterns with rainfall being expected in the island’s northern regions between June and July.

Java

During the year, the best time to visit Java is in the middle of the dry season which ranges from May to September, when the days are hot, sunny, and dry. These months are likewise a perfect time to travel in the event that you are anticipating climbing the mountains of Ijen or Bromo.

Rainy season in Java starts in November and ends in March, even though East Java encounters less rainfall than the western areas. Days are categorized by frequent, serious rain showers that tend to keep going for hours.

Temperatures are constantly warm year-round, with normal day by day temperatures floating around 28-30°C, in spite of the fact that temperatures are chiller in the higher mountainous areas, for example, Mt Bromo, particularly during the night.

Nusa Tenggara (Flores, Lombok, Sumba, Komodo National Park)

The islands of Nusa Tenggara, including the Gili Islands and Lombok, Flores, and Sumba, regularly encounter dry season from April to September with a lot of sunshine and blue skies. These months are a perfect time to travel in the event that you are planning to take a dive on the Gili Islands, Komodo National Park, and the coast of Lombok or climb Mt Rinjani.

The wet season starts in October and ends in March, with November, December and January experiencing the highest rainfall. Like the nearby island of Bali, the normal temperature is relativelyconstant year round all over the islandsof Nusa Tenggara, ranging from 27 to 29°C.

Sumatra

Sumatra is a relativelylarge islanddivided by the equator with weather conditions varying marginally all over the island. North Sumatra and Medan encounter a more tropical climate with the possibility of rainfall year round, particularly in the jungle-clad regions, for example, Bukit Lawang.

The heaviest rainfall in the north is normally between October and January. South Sumatra and Palembang encounter a more fixed split betweendry and wet season, with drier weather naturally happening between April and October with rainfall from November to March. Regular temperatures float around 27-28°C consistently, in spite of the fact that highs of 33-34°C are normal in the drier months of summer.

Bali

Bali’s dry season ranges from April to September, with days categorized by the sunshine and blue skies. May, June, and September are perhaps the best time to visit when there are ideal weather conditions withaverage visitor numbers, which means the popular beach resorts of Sanur,Seminyak, and Jimbaran are not very swarmed.

The wet season in Bali falls between October and March, however,it is brief tropical rainfall as opposed monsoonal rainfalls. Temperatures in Bali are relativelyconstant year round, ranging from 26°C to 29°C, despite the fact that the central areas around Ubudincluding the mountains, for example, Mt Batur, encounter cooler temperatures and higher rainfall compared to the coastal areas.