Mulu is not strongly affected by the monsoonal seasons that most of South East Asia experiences. July – September are the driest months (it only rains about 3 days in 7) but it is also hotter without the cooling rains. March and April have a little less rain than the wettest months of October - January and May - June.

A Typical day in Mulu

Each Mulu morning usually dawns with a clear sky and a temperature around 23 degrees.

By early afternoon the temperature has risen to about 34 degrees and 60% humidity; around 3.00 – 5.00 pm it will start raining and the humidity increases to 90%. Showers may last 30 – 60 minutes, but after the rain the air is cool and fresh, the evenings are usually fine.

As it rarely rains in the morning those doing the Pinnacles climb go up in dry conditions and if they are slower to return they may get wet towards the end of their walk. Cancellation of the Pinnacles climb due to wet weather would average no more than 10 days per year.

Yes we do get between 4 – 7 metres of rain each year so you will experience wonderful tropical down-pours which swell the rivers and sometimes make them flood.

Peak Season

July, August and September are usually busier than other times of the year we recommend that at all times you should make bookings for accommodation and guides in advance to avoid disappointment. Once the facilities are full and the guides booked then there is nothing we can do to help even though you have traveled a long way to visit.