1

January is usually one of the rainiest months.

2

According to what I've read.

January is the wettest month of the year in Bali. It’s the peak of the annual wet season and visitors can expect around 300mm of rainfall during the month. Skies will be mostly overcast, with rain falling throughout the day. With the high temperatures and high precipitation comes high humidity; around 85%. This makes January one of the most humid months of the year.

3

It is true January falls in the middle of the wet season and there are over 300mm of rain during the month. But there is also lots of sunshine and clear skies to be enjoyed in Bali at that time of year. In Denpasar in January you can expect 8 hours of sunshine a day. 60% of daylight hours are usually sunny; that’s about the same as Sydney in September.

In the mountains and foothills such as at Ubud there will be more cloud and less sunshine, but assuming you are going to be staying somewhere in the south of the island or at least on the coast you can expect the best weather of the day to be first thing in the morning.

Cloud will then start to build during the day and sometime after about 2pm in the afternoon it will rain, perhaps for as much as 2 hours and then clear again as the evening approaches. Sometimes there is no rain on the coast, while higher up it is raining hard. If you are planning a trip to the volcano at Batur or the temple at Besakih it is best to travel really early in the day.

Although high in January, Heat and Humidity, which is our measure of how hot it feels, is not as high in January as it is in December and March. Temperatures during the day usually rise to over 30°C but fall in the evening to around 23°C. I have spent the whole month of January in Bali sleeping without air-conditioning and it was fine. Stay as near to the beach as you can it is always a little bit cooler with more breeze right on the coast.

4

Based on 15 years of 24/7 living on Bali, the information provided in the previous post is a very accurate assessment of the weather to be expected on Bali during the month of January.