Climate and Key Facts

We will advise you on the best time of the year to travel and, just as importantly, when not to go to a particular region or place. We hope the following guidelines are useful:


The best travelling period is in the dry season between May and September. The sun shines 12 hours per day, as Sumatra lis situated around the equator.


The wet season on Java is from October till March, but don’t let that put you off.


Bali has a similar climate to East Java and has low rainfall during the dry season, which is from April to November. Bali is also an island that you can visit at any time of the year.

Lombok and Sunda Islands

The best time to travel to Lombok and the Sunda Islands is in the dry season from April/May until October. January and February are the wettest months on the Sunda Islands, but even during monsoon season, it isn’t raining the whole day.


The wet season is from October to March. The temperature on Sulawesi is between the 25 and 34 degrees and, because Sulawesi lies on the equator, the sun shines around 12 hours a day. In the mountains in the middle of Sulawesi  there is often a bit of rain in the late afternoon for a couple of hours.

Kalimantan (Borneo)

Kalimantan has a lot of rainfall in the tropical forest. The centre of the mountains is the wettest area and the southern part of the island is the driest.  The wet season is from October until June and the dry period is from July until September. In the dry season it is still possible to have some rain, but only in the late afternoon for around an hour or so. The sun shines 12 hours per day.


The dry season in Papua is from April to   November and the wettest months are December to March with the heaviest rains in January/February.


Please click onto the links for up-to-date visa and entry requirements for British nationals travelling to Indonesia.


Passport validity

Please make sure your passport is valid and up to date. Your passport should be valid for a minimum period of 6 months from your date of arrival into all South East Asian countries.  


Yellow fever

Evidence of Yellow Fever vaccination may be required for travellers who are going to or have recently been to countries where there is a risk of yellow fever transmission.


Travelling with children

Single parents or adults travelling with children under the age of 18 are required to provide notarised documentary evidence of parental responsibility, or consent to travel from those with parental responsibility. Such documentation is often required before being allowed to enter South East Asian countries and, in many cases, before permitting children to leave the country.  


Local airport taxes

International and domestic airport taxes may be payable locally if it is not included with your airline tickets. This is usually payable in US dollars and it may not always be possible to pay by credit/debit card.

For up-to-date advice on any vaccination requirements and any health risks associated with visiting South East Asia please contact your GP.

The following NHS website provides helpful health information and advice for travellers:

For information on the Zika virus, please see the factsheet published by the World Health Organisation:

The following recommendations are published by Fit for Travel:



Please click onto the links for up-to-date advice from the Foreign and Commonwealth office:



Help for British nationals in South East Asia:


Further Advice to follow soon.

In general terms it is best to travel with US dollars.

Credit cards are widely accepted in hotels and the better restaurants and shops but may not be accepted in small shops, cafes, bars and restaurants, nor in local markets.



Exchange rates are subject to change at any time but the following table provides indicative information for South East Asia and beyond:

Indonesia: GMT + 6-8 hours

Sumatra, Java, Central & West Kalimantan: GMT + 6 hours

Bali, Sulawesi, East Kalimantan: GMT + 7

Malulu, Papua: GMT + 8 hours