Borneo Weather in January
A visit to Sabah, Borneo is definitely worth considering in January, even if the weather is a bit more humid and choppy than expected. It may not be peak season and there may be occasional storms bought on by the winds of the northeast monsoon, but with less people holidaying, you can expect a much quieter time on safari and lower rates for accommodation and travel.
Borneo has tropical weather, with quite high humidity, unexpected rain, and choppy seas appearing seemingly out of nowhere all year round.
The rainfall is higher in January than it would be in, say, August, but the temperature sticks around 27 degrees Celsius for the month, with about 300mm of rain in Sabah and 680mm in Sarawak.