Indonesia Travel Weather

January

Java → One of the rainiest months of the year. Heavy rainfall and thunderstorms can be expected, especially on the northeast coast, which is additionally prone to flooding. Temperatures are around 27°C during the day and 22°C at night. Rainy weather is not conducive to climbing Bromo and Ijen volcanoes. Roads can be slippery and muddy and thus partially inaccessible.

Sulawesi → The weather is warm and humid with an average temperature of about 26°C. Rain and thunderstorms can be expected, especially in the southern regions and on the southwest coast. Diving conditions are not the best in Manado Bay, mainly due to rough water and poor visibility.

Kalimantan → Here it is also rainy. Precipitation comes in the form of brief but intense downpours. Days are often overcast and the average temperature is around 27°C.

Sumatra → The rainy season is underway, however, the northern part of Sumatra (Medan area) is slightly more serene than the south of the island, where rainfall is more intense. With heavily overcast skies, temperatures are hovering around 26°C, and humidity rises to over 80%.

Bali → One of the rainiest months of the year, during which intense downpours occur on sunny warm days. Temperatures generally do not drop below 25°C. The exception is the area around Kintamani and the Batur volcano, where the air is fresher and cooler.

Nusa Tenggara (Lombok, Flores, Komodo National Park, Sumba) → There is heavy rainfall and the temperature reaches 28°C, the humidity rises and it becomes steamy. The rough seas are not safe for divers off the coast of Lombok and in Komodo National Park. Occurring storms can cause significant difficulties for boat and ferry trips.

February

Java → The rainy season is underway across the island, although there is slightly less rainfall in the central-southern (Surabaya area) and eastern parts. West Java and the northeastern coast (Jakarta) are still subject to flooding during this time. Temperatures remain around 27°C. This is a bad time to trek to the Bromo and Ijen volcanoes.

Sulawesi → Monsoon still covers the southern areas of the island, including the area around Tana Toraja. The northern part of Sulawesi is more serene. Days are warm, with temperatures around 27°C, but there is cloud cover.

Kalimantan → A warm month (26°C - 27°C), but very humid and rainy. Not the best time to visit national parks, as animals are less visible.

Sumatra → A good time to visit the northern part of Sumatra. There is much less rainfall here than on neighboring islands. A favorable time for trekking through the jungles of Bukit Lawang and viewing orangutans. The rainy season continues in southern Sumatra, where heavy downpours are still the order of the day.

Bali → The rainy season is underway, and warm days can be expected along with frequent passing downpours. The rough sea does not make for good diving and snorkeling conditions around Menjangan and West Bali National Park.

Nusa Tenggara (Lombok, Flores, Komodo National Park, Sumba) → Aura similar to January. It's very warm and humid, with frequent fleeting rains.

March

Java → The rainy season still prevails, but the frequency and intensity of rainfall is gradually decreasing. Temperatures reach 30°C. In March, you can take part in the "Sekaten" festival (in the cities of Yogyakarta and Surakarta), commemorating the birthday of the Prophet Muhammad. It is a spectacular carnival with offerings and processions.

Sulawesi → Monsoon rains are easing around Tana Toraja and the southern part of the island. Northern areas (including Manado) are a bit drier. In between the fleeting rainfall, you can count on a good dose of sunshine.

Sumatra → The northern part of the island is definitely drier than the southern part, where it still rains heavily.

Bali → Hot and rainy weather prevails. Intense but short-lived downpours occur in the afternoon. In March, Bali celebrates the Hindu New Year (Hari Raya Nyepi), during which meditation and tranquility prevail. You cannot light fires, work or indulge in entertainment. There may be minor communication problems during this time.

Nusa Tenggara (Lombok, Flores, Komodo National Park, Sumba) → On Lombok and the Gili Islands, Flores and Sumba, the rainy season is coming to an end. Temperatures are rising to over 30°C.

Kalimantan → Rainfall gradually decreases, sunny and bright days increase.

April

Java → The dry season begins, the number of sunny and rainless days increases. Nature flourishes, hills and rice fields turn green. Temperatures can exceed 30°C.

Kalimantan → Variable weather prevails, you can still expect some fleeting rains, but also plenty of sunshine.

Sumatra → Milder weather in the southern areas of the island, with gradually more sunshine and cloudless skies. Northern regions are drier and more serene. Temperatures above 30°C and fleeting rainfall can be found throughout the island.

Bali → Sunny and relatively dry weather returns. Temperatures reach 28°C, coastlines are warmer and less windy. The beach and water sports season begins. Favorable diving conditions around Menjangan and West Bali National Park, as well as off the east coast.

Nusa Tenggara (Lombok, Flores, Komodo National Park, Sumba) → Dry season begins, islands experience plenty of sunshine and cloudless skies. A good time for beachcombing and enjoying the sea. Good conditions for diving off the coast of Lombok, the Gili Islands and Komodo National Park. Longer treks, such as to the Rinjani volcano (Lombok), can be arranged without much trouble.

Sulawesi → The southern part of the island (including Tana Toraja) is more serene and dry than the northern part, where the rains this month intensify.

May

Java → The dry season is in full swing. Sunny days encourage sightseeing and trekking to Bromo and Ijen volcano.

Sulawesi → Hot and sunny days with average temperatures of 29°C - 32°C. Rainfall can still be expected in the northern part of the island, the southern regions are more cheerful and dry. May gives rise to good diving conditions in Manado Bay, which last until October. A very good time to visit the Maros and Bantimurung area.

Bali → Hot, sunny and rainless days guarantee pleasant relaxation on the beaches. Very good conditions for diving and trekking.

Nusa Tenggara (Lombok, Flores, Komodo National Park, Sumba) → Here there are also excellent conditions for beachcombing and water sports. The diving season is underway off the coast of Lombok, the Gili Islands and in Komodo National Park. Treks to the Rinjani volcano (Lombok) are organized.

Kalimantan → Air temperature (up to 33°C) and humidity are rising. It is muggy and steamy, and there may also be fleeting rainfall.

Sumatra → The dry season continues on the southern part of the island, however, fleeting rainfall may still occur. The northern regions are wetter and rainier this month, but a fair amount of sunshine can be expected there as well.

The most important Buddhist festival, Wesak, is celebrated in May. Numerous processions and rituals recall the birth of the Buddha.

June - September

Java → The peak tourist season is underway, so try to make advance reservations for airline tickets and accommodations. The weather across the island is sunny and dry. Due to the large number of tourists, trekking trails to the Bromo and Ijen volcanoes and around the Borobudur temple can be crowded.

Sulawesi → One of the driest months of the year, and one of the best times to visit Sulawesi. Sunny days and cloudless skies encourage a visit. Transient rainfall may still occur around Manado and the northern regions. Very good diving conditions around Manado Bay.

Kalimantan → Relatively dry and sunny weather across the island, the best time to visit this part of Indonesia. It's hot and humidity levels remain high, especially around the rainforest, where there can be brief, intense downpours. A good time to observe orangutans in Tanjung Puting National Park.

Bali → A very popular time to visit, the beautiful weather guarantees a trouble-free holiday. Plenty of sunshine and cloudless skies are conducive to beachcombing and water sports. There are favorable conditions for diving around Menjangan and West Bali National Park, as well as off the east coast. Due to the large number of tourists, it is advisable to try to make advance reservations for tickets and hotel accommodations.

Nusa Tenggara (Lombok, Flores, Komodo National Park, Sumba) → The peak tourist season continues here as well. Sunny and relatively rain-free days encourage visitors. An ideal time for beachcombing, trekking and scuba diving.

Sumatra → One of the best months to visit this area of the country as well. A high prevalence of dry and sunny days prevails throughout the island.

October

Java → A warm and relatively dry month. Last, before the rainy season, time to climb Bromo volcano and Ijen volcano.

Sulawesi → Still a hot (about 35°C) and relatively dry season. The last month (before the rainy season) of favorable diving conditions in Manado Bay.

Kalimantan → The month heralding the return of the rainy season. Gradually increasing cloud cover and rainfall.

Bali → A good time to visit Bali. The weather is no longer ideal, there may be some fleeting rainfall, but it does not significantly hinder your vacation. Good conditions for beachcombing and snorkeling around Menjangan and West Bali National Park.

Nusa Tenggara (Lombok, Flores, Komodo National Park, Sumba) → The islands continue to enjoy plenty of dry and sunny days. There may be mild, fleeting afternoon rainfall, but it is not so intense as to spoil your vacation. This is the last date before the rainy season for climbing the Rinjani volcano. Good diving conditions are also gradually coming to an end off the coast of Lombok, the Gili Islands and Komodo National Park.

Sumatra → One of the hottest months of the year, with temperatures around 33°C. Palembang and the southern part of the island experience more sunshine and dry days. Northern areas are more rainy.

November

Java → The dry season is coming to an end on the island. Days become cloudy and rainy, and thunderstorms may also occur.

Sulawesi → Gradual arrival of the monsoon near Tana Toraja and South Sulawesi. Rainfall also increases in the northern part of the island.

Kalimantan → A rainy month, the greatest increase in rainfall occurs in the southern and western parts of the island. Despite the cloudiness, the air temperature remains high, around 27°C.

Bali → The rainy season has arrived here as well. Despite increasing rainfall, you can still count on high temperatures (around 27°C) and piercing sunshine. However, hiking to the top of the Batur volcano is not advisable.

Nusa Tenggara (Lombok, Flores, Komodo National Park, Sumba) → One of the rainiest months of the year. Intense rainfall can complicate travel around the islands, with flooded roads and local flooding making some areas inaccessible to tourists.

Sumatra → Northern regions experience intense rainfall. Cloudy days and heavy rains also occur in the southern part, but are no longer as intense.

December

Java → The rainy season is in full swing. This is one of the wettest months of the year. Intense rains and thunderstorms prevail throughout the island. Temperatures hover around 27°C.

Sulawesi → The monsoon season continues throughout the island, with cloudy skies and rainy days. Poor diving conditions in Manado Bay.

Kalimantan → Intense but short-lived downpours occur, which are not as annoying as on other islands.

Bali → Increased rainfall is also recorded in Bali, although sunshine can still be counted on to break through. Average air temperatures remain at 27°C. During the Christmas and New Year period, the number of tourists arriving in Bali increases, and despite the not so good weather, it gets crowded.

Nusa Tenggara (Lombok, Flores, Komodo National Park, Sumba) → Most islands experience increased rainfall and higher humidity. The air temperature stays around 30°C.

Sumatra → The rainy season continues throughout the island, but the northern part experiences slightly milder rains than the southern part. It is hot and humid throughout Sumatra.