Borneo is one of the few places in Southeast Asia that is at its best during the summer months. It’s generally dry and sunny between March and October, which makes for ideal jungle trekking conditions. This is the best time to view wild orang-utans, whilst the turtle season on Lankanyan Island runs between June and September. Jungle lodges and beach properties will be in short supply, so it’s a good idea to book far in advance.
As it is a tropical island rainfall can occur throughout the year, however the wettest months tend to be between November and February. For keen wildlife enthusiasts who don’t mind the rain, the start of the wet season could be a rewarding time to visit as the lush jungle attracts plenty of wildlife and you’ll find fewer visitors at national parks. We would avoid December and January as the heavy rains and thunderstorms make getting to certain areas more difficult, and wildlife sightings less frequent.
Temperatures remain fairly constant throughout the year, averaging around 30°C, whilst humidity is generally at 80%. However, there are ways to escape the heat. You can head to one of Borneo’s idyllic beaches to snorkel and cool off in clear waters, or add a trek up Mount Kinabalu to your trip to enjoy cooler temperatures (as well as outstanding views).