Climate of Indonesia: Hot & Rainy Paradise

Some of the most critical questions of every traveler and tourist who decides to visit an exotic country such as Indonesia usually refer to the climate of the area they are interested in, since it influences not only their clothes selection but also the time of the year when they will visit the destination, as well as their itinerary. Therefore, we are bringing you some of the basic information related to climate of Indonesia that you can expect in this wonderful part of the world.

Telaga Warna Dieng Plateau – Climate of Indonesia

Since Indonesia is a country made up of an archipelago located in the equatorial zone, it can offer you a pretty warm weather. It has a very hot climate, enriched with abundant rainfalls during the summer, although in its higher terrains, such as in the high mountainous areas it can get pretty windy, with slightly lower temperatures. This is the reason why this area is now and then referred to as the area that can fulfill everyone’s demands regarding weather conditions. All you have to do is to wisely choose the period of your vacation in Indonesia, having in mind your own preferences.

How hot can it be there?

Really hot.

A perfect morning at Nusa Dua beach, Bali – Climate of Indonesia

The average annual temperature in Indonesia is around 25 Celsius degrees, and it is well known for its rains since the rainy season lasts from November to April. Luckily, for the rest of the year, Indonesia is a real tropical paradise for all of the lovers of heat, beaches and water sports activities.

In the most parts of the eastern, western and equatorial islands, climate conditions of Indonesia are literally tropical. The warm waters constitute more than 80 percent of the area of Indonesia and that ensures that the temperatures of the ground remain relatively the same through the year, with coastal temperature balancing at an average of 28 ° C in the coastal areas, and mountain areas’ temperature with the average of 26 ° C. Its highest regions offer you the lowest temperatures, with an average of 23 ° C.

Evening storm – Climate of Indonesia

The temperature does not vary significantly from one season of the year to another. Indonesia experiences relatively small and not so drastic changes in the length of the daylight hours from one season to another. The difference between the longest and the shortest day of the year is only forty-eight minutes, which is really a minimal difference compared to some other parts of the world.


However, the most important characteristic of the Indonesian climate is neither its temperature, nor its air pressure, but its rainfalls. Believe it or not, but the relative humidity of this area has been always in the upper part of the scale, rarely under 70 percent.

The winds in Indonesia are moderate and generally predictable, monsoons blowing from the south and east usually last from June to September and the ones blowing from the northwest last from December to March.

More about monsoons and the climate of Indonesia

Monsoon season – Climate of Indonesia

Significant changes in the amount of the rainfall are mostly affected by monsoons, and this change actually divides the year in Indonesia into two main seasons:

  • The dry period from April to October, which is affected by Australian continental air masses,
  • The rainy period from November to March, which is the result of the interaction of Asian air masses with the influences coming from the Pacific Ocean.

Anyway, it is not strange for local winds to importantly influence and change the overall ways of wind blows, which is the case with the Maluku islands, and some other places of the country, such as Ambon and Buru. This pattern of annual oscillation of wind and rain is related to the geographical location of Indonesia as an isthmus between two great continents.

Gunung Kerinci, Gadang – Climate of Indonesia

In September and May, the high air pressure above the Gobi desert influences the winds to move toward the northwestern areas. As the winds reach the equator, the rotation of the Earth causes diverting from its original course northeast toward the mainland of Southeast Asia. During January and February, a low-pressure system makes the reversed pattern. The result is a monsoon, which is enhanced by the moist breezes from the Indian Ocean, producing significant quantities of rain in many parts of the archipelago.


Breezes, rainfall and climate in Indonesia

Beautiful day coming – Climate of Indonesia