Indonesia Weather, climate and geography

Indonesia is split by the equator, which results in a tropical climate across the archipelago with relatively even temperatures year-round. Inland and around the mountainous regions, temperatures average at 26°C (79°F) while the coastal regions averaging 28°C (82°F). While temperatures are relatively constant, rains do not follow the similar pattern. In general, Indonesia also has two monsoon seasons: the northeast monsoon (December to March) and the southwest monsoon (June to September). These monsoon seasons either bring an abundance of rainfall or a dry spell, depending on the geographical region you are visiting.

Jakarta: the sprawling capital of Indonesia is situated on the northwest coast of Java and is sheltered from the south-west monsoon. Jakarta has a tropical monsoon climate and is characterised by one long wet season, which runs from October to May and a short dry season, which runs from June throughout September. Year-round, the temperature is warm, with an average high temperature of 31°C (88°F) and an annual average low temperature of 26°C (79°F). The prime time to experience Jakarta is from June to mid-October, during the dry season when the skies are clear.

Bali: Bali allures tourists with its beautiful beaches, forested volcanic mountains and cultural sites. Located a few degrees south of the equator, this island experiences a tropical climate throughout the year. The rainy season is from November to May while the relatively dry season (some showers are still likely) is from June to October. The dry season is a good time to see Bali at its best, as there is little rain, low humidity and plenty of sunshine, with an average high of 31°C (88°F). Avid surfers can enjoy Bali's breaks all-year-round, but the best months for surfing is during the dry season.

Sumatra: the island of Sumatra receives abundant rainfall throughout the year. Medan, the capital of North Sumatra province, has a tropical climate with no real dry season, although February is slightly drier than the other months. Palembang, the capital of South Sumatra province, also sees plenty of rain throughout the year, although July is slightly drier than the other months.