September: 86 places at their best

Malaysia (Sabah and Sarawak), Asia

The best time to visit Borneo

Always hot, always green, and rainy to some degree year-round. The question is when the rain eases and the wildlife lines up.

Best months
Apr to Aug
Think twice
No month is a write-off
Quietest
January
Cheapest
January
Mount Kinabalu above Kundasang, Sabah, Borneo
BorneoPhoto: kallerna, CC BY-SA 4.0

The straight answer

The best time to visit Malaysian Borneo is March through September, the drier months for orangutan and river wildlife trips in Sabah and Sarawak, climbing Mount Kinabalu, and diving Sipadan.

Go between March and September. Malaysian Borneo is equatorial, so it is hot and humid every month, with highs near 88F (31C) and rain possible any afternoon. But the northeast monsoon from about November through February brings the heaviest, most persistent rain to Sabah's east coast and to Kuching in Sarawak, along with rougher seas and muddier trails. From March the rain eases, and mid year is the most reliable stretch for rainforest lodges, river cruises, and diving.

Wildlife does not follow a strict calendar. Orangutans at Sepilok and in the wild, proboscis monkeys on the Kinabatangan River, and pygmy elephants can be seen year-round, though drier months make river trips easier and some animals gather along riverbanks when water levels drop. Green turtle nesting on Sabah's Turtle Islands peaks from about July to October, and Sipadan diving is at its calmest from roughly April through December.

Mid year is also festival season: Kaamatan, the Sabah harvest festival in May, Gawai Dayak in Sarawak on June 1 and 2, and the Rainforest World Music Festival near Kuching. The trade-off is demand, since lodges on the Kinabatangan and permits for Kinabalu and Sipadan are limited and book out early for July and August.

Borneo, month by month

Every month gets a verdict. Tap one for its own page: weather, crowds, prices and what is on.

  1. JanuaryTradeoffsHot and wet, highs near 86F (30C), heavy rain on the east coast and in KuchingThe heart of the northeast monsoon. Wildlife trips still run, but expect rain, muddy trails, flooding risk, and rough seas. Chinese New Year brings regional visitors.CrowdsPrice
  2. FebruaryQuiet valueHighs near 86F (30C), rain easing late monthRain starts to ease on the west coast; Kinabalu often has clear mornings. Still wet in the east.CrowdsPrice
  3. MarchGoodHighs near 88F (31C), drier on most coastsA smart early pick: the monsoon is fading, crowds are low, and Kinabalu permits are easier to get.Hotels for March →CrowdsPrice
  4. AprilBestHighs near 90F (32C), among the driest monthsExcellent conditions for Kinabatangan river cruises, Danum Valley, and Sipadan diving before the summer rush.Hotels for April →CrowdsPrice
  5. MayBestHighs near 90F (32C), humid, afternoon showersDry enough, fewer visitors than midsummer, and Sabah's Kaamatan harvest festival runs all month.Hotels for May →CrowdsPrice
  6. JuneBestHighs near 90F (32C), mostly dry with short stormsGawai Dayak on June 1 and 2 in Sarawak, and the Rainforest World Music Festival often lands around midyear. Good wildlife viewing.Hotels for June →CrowdsPrice
  7. JulyBestHighs near 90F (32C), relatively dryPrime time, and the busiest. Turtle nesting season is underway. Book lodges and Kinabalu permits months ahead.Hotels for July →CrowdsPrice
  8. AugustBestHighs near 90F (32C), some stormsStill reliable weather and strong wildlife viewing, plus peak European holiday demand. Book early.Hotels for August →CrowdsPrice
  9. SeptemberGoodHighs near 88F (31C), rain slowly increasingCrowds thin, turtle nesting continues, and conditions remain decent in most places.Hotels for September →CrowdsPrice
  10. OctoberQuiet valueHighs near 88F (31C), wetter, especially on the west coastThe inter-monsoon brings heavier afternoon rain around Kota Kinabalu. Good deals, but pack for downpours.CrowdsPrice
  11. NovemberTradeoffsHighs near 87F (31C), heavy rain as the monsoon startsRain increases everywhere. Still workable for Sepilok and short river trips; rough seas can affect island and dive trips.CrowdsPrice
  12. DecemberTradeoffsHighs near 86F (30C), among the wettest monthsWet, especially in Kuching and eastern Sabah, with flooding in some years. Regional holiday travel adds demand at month's end.CrowdsPrice

Book Borneo for April.

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Why go to Borneo

Orangutans in their home forest

Borneo is one of only two islands where wild orangutans live. Sepilok's rehabilitation center and the forests of the Kinabatangan and Danum Valley give real chances to see them.

Some of the oldest rainforest on Earth

Borneo's lowland dipterocarp forests are among the oldest in the world, rich with hornbills, gibbons, clouded leopards, and pitcher plants.

Mount Kinabalu

At 13,435 ft (4,095m), Malaysia's highest peak is climbable without technical skills in two days, with a dawn summit above the clouds.

World-class diving

Sipadan, off Sabah's southeast coast, is famous for turtles, barracuda tornadoes, and a sheer wall dropping from the beach. Daily permits are limited.

Things to do, and when to do them

01

Sepilok Orangutan Rehabilitation Centre

Feeding times draw the most visitors. The adjacent Bornean Sun Bear Conservation Centre is worth the extra hour.

Official site ↗Tickets and tours →

02

Kinabatangan River

Dawn and dusk boat cruises for proboscis monkeys, hornbills, crocodiles, and sometimes pygmy elephants. Drier months are best.

Tickets and tours →

03

Mount Kinabalu

Climbs require a permit, a licensed guide, and an overnight at Laban Rata. Permits are limited and book out months ahead for midyear.

Official site ↗Tickets and tours →

04

Danum Valley

Primary rainforest with some of the best wild orangutan and gibbon viewing in Borneo. Lodges are limited, so book early.

Tickets and tours →

05

Gunung Mulu National Park

Huge caves, the Pinnacles limestone spires, and a bat exodus at dusk. Reached by small plane from Miri or Kota Kinabalu.

Official site ↗Tickets and tours →

06

Sipadan and Semporna

World-class diving with daily permit limits. April through December usually brings the best visibility.

Tickets and tours →

07

Kuching and Bako National Park

Sarawak's relaxed capital, plus proboscis monkeys and bearded pigs on Bako's coastal trails.

Tickets and tours →

Events and seasons worth planning around

All events
May

Kaamatan (Sabah Harvest Festival)

Throughout May, peaking at the end of the month

Kadazan-Dusun harvest celebrations with rice wine, traditional dress, and the Unduk Ngadau pageant.

June

Gawai Dayak

June 1 and 2 every year

Sarawak's Dayak harvest festival. Longhouses celebrate with feasts, music, and dancing; some businesses close.

JuneJuly

Rainforest World Music Festival

Midyear, usually June or July, varies by year

Held at the Sarawak Cultural Village near Kuching, with global and indigenous musicians. Hotels in Kuching book up.

JulyAugustSeptemberOctober

Turtle nesting season

Peaks roughly July to October

Green and hawksbill turtles nest nightly on the Turtle Islands, where overnight visitor numbers are strictly limited.

JanuaryFebruary

Chinese New Year

Late January to mid February, varies by lunar calendar

Kota Kinabalu and Kuching have large Chinese communities. Some shops close and regional travel spikes.

Beat the crowds

  • Travel in April, May, or September instead of July and August. The weather is similar and lodges and permits are easier to secure.
  • Book Kinabalu permits and Kinabatangan and Danum Valley lodges early; they are the real bottleneck, not crowds on the trail.
  • At Sepilok, arrive for the morning opening rather than feeding time to avoid the tour bus rush.
  • For Sipadan, pick a dive operator with guaranteed permit days; other days you dive nearby Mabul and Kapalai, which are excellent in their own right.

Open or closed

  • Mount Kinabalu climbs require a permit, a licensed guide, and accommodation at Laban Rata; trails can close temporarily after heavy rain or rockfall.
  • Sipadan access is limited to a fixed number of divers per day, allocated through licensed dive operators.
  • Turtle Islands Park allows only a small number of overnight visitors, so the few spaces sell out early in nesting season.
  • During the heaviest monsoon rains (December to February), river levels rise, some jungle trails close, and boat trips can be cancelled.
  • Gawai Dayak (June 1 and 2) and Hari Raya close some businesses and fill domestic transport in Sarawak and Sabah.

With kids in tow

  • Sepilok, the sun bear center, and a Kinabatangan river cruise make a very kid-friendly three to four day wildlife loop.
  • Kinabalu has a minimum age requirement for the summit climb; check with Sabah Parks before planning it with children.
  • Leeches are common in the rainforest. Leech socks and a positive attitude go a long way with kids.
  • For homeschool families, Borneo is a living biology lesson in rainforest ecology and conservation, especially on the palm oil and orangutan story.

Getting there

  • The main gateways are Kota Kinabalu (BKI) in Sabah and Kuching (KCH) in Sarawak. There are no nonstop flights from the US.
  • Most Americans connect through Kuala Lumpur, Singapore, Hong Kong, Seoul, or Tokyo; from Texas, a route via a Pacific or Gulf hub is typical.
  • Domestic flights link Kota Kinabalu with Sandakan (for Sepilok and the Kinabatangan), Tawau (for Semporna and Sipadan), and Miri (for Mulu).
  • Sabah and Sarawak run their own immigration checks, so bring your passport even when flying in from Peninsular Malaysia.

Packing? Packing cubes and the airport kit.

Borneo timing, quick answers

What is the best month to visit Borneo?

April or May: drier weather, good wildlife viewing, and fewer visitors than the midsummer peak. July and August are just as good for weather but far busier.

What is the cheapest time to visit Borneo?

November through February, during the northeast monsoon, when lodges discount. Expect heavy rain, possible flooding, and rougher seas.

When is the rainy season in Borneo?

The heaviest rain in Malaysian Borneo comes with the northeast monsoon from roughly November to February, especially on Sabah's east coast and in Kuching. Showers are possible year-round.

When is the best time to see orangutans in Borneo?

Orangutans can be seen year-round at Sepilok and in the wild. Drier months, roughly March to September, make forest walks and river trips easier.

When is the best time to climb Mount Kinabalu?

March through September generally gives the best chance of a clear summit morning. Permits are limited, so book months ahead.

When can you see turtles nesting in Borneo?

On Sabah's Turtle Islands, nesting happens year-round but peaks from about July through October.

Weighing alternatives

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