Discover the best time of year, based on historical climate, temperature, and precipitation.
The best weather in Borneo is from July. — some variation climate
🌧Rainy
| Score | 46 | 48 | 48 | 49 | 49 | 50 | 56 | 51 | 50 | 49 | 47 | 47 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Climate | Rainy | Rainy | Rainy | Rainy | Rainy | Rainy | Rainy | Rainy | Rainy | Rainy | Rainy | Rainy |
| Temperature | 18–25°C | 17–25°C | 18–25°C | 18–25°C | 18–25°C | 18–24°C | 17–24°C | 17–25°C | 17–25°C | 17–25°C | 18–25°C | 18–25°C |
| Feels like | 20–28°C | 20–29°C | 20–29°C | 20–29°C | 20–29°C | 20–28°C | 20–28°C | 19–28°C | 19–28°C | 19–29°C | 20–28°C | 20–28°C |
| Precipitation | 411mm 30 days | 366mm 30 days | 430mm 30 days | 442mm 30 days | 393mm 30 days | 318mm 29 days | 249mm 27 days | 285mm 27 days | 316mm 29 days | 352mm 30 days | 447mm 30 days | 379mm 30 days |
| Sunshine | 4.3h ☀︎ 36% | 4.8h ☀︎ 40% | 4.8h ☀︎ 39% | 5.3h ☀︎ 44% | 5.1h ☀︎ 42% | 5.6h ☀︎ 46% | 6.3h ☀︎ 52% | 5.9h ☀︎ 49% | 5.5h ☀︎ 45% | 5.1h ☀︎ 42% | 4.5h ☀︎ 37% | 4.6h ☀︎ 38% |
| Wind | NW · 7 km/h | N · 7 km/h | NW · 7 km/h | NW · 7 km/h | SW · 7 km/h | S · 7 km/h | S · 7 km/h | S · 7 km/h | SW · 7 km/h | W · 8 km/h | NW · 7 km/h | NW · 7 km/h |
| Humidity (%) | 90% | 89% | 90% | 91% | 91% | 90% | 88% | 89% | 88% | 89% | 91% | 90% |
| Day length | 12.1h | 12.1h | 12.1h | 12.1h | 12.2h | 12.2h | 12.2h | 12.1h | 12.1h | 12.1h | 12.1h | 12.1h |
Pontianak in West Kalimantan hosts one of Indonesia's most spectacular Cap Go Meh celebrations, marking the end of the C…
Held annually in Tenggarong, East Kalimantan, this vibrant festival showcases the rich cultural heritage of the Kutai Ki…
Celebrated by the indigenous Dayak communities across Kalimantan, this harvest festival is a time of thanksgiving and cu…
Travelers flood Indonesian Borneo at the turn of the year under relentless, drenching skies, missing the island's true sweet spot. July brings the clearest light, easier river journeys, and far lighter trails.
Borneo does not follow the gentle seasonal arcs of the temperate world. Cut across its middle by the equator and covered in ancient, primeval rainforests that stretch across Kalimantan, the island is permanently warm, perpetually humid, and relentlessly green. Yet travelers make a curious mistake here: they arrive in droves when the skies are at their most torrential, crowding the waterways just as the rivers threaten to burst their banks. To experience these vast jungle landscapes without fighting daily deluges, you have to invert that instinct.
July is the undisputed high point of the calendar in Kalimantan. The rain never stops entirely in a rainforest that has stood for millions of years, but midsummer brings long stretches of unbroken sunshine and brief, manageable showers that clear quickly rather than washing out whole afternoons. The canopy dries out, walking trails turn from thick mud to navigable earth, and the rivers settle into a calm, steady flow.
This is also the moment when East Kalimantan comes alive in Tenggarong along the Mahakam River for the Erau International Folk Art Festival, filling the riverbanks with Dayak and Kutai dances, music, and ceremonies. Out on the water and along the boardwalks, movement is unhurried. Despite being the best time to see wild orangutans swinging through the trees in Tanjung Puting National Park or to cruise inland waterways, visitor numbers are refreshingly modest. August keeps that momentum, offering warm, breezy evenings and clear forest dawns.
By September, the balance shifts. Humidity creeps higher and the clouds mass along the horizon before noon, unleashing heavy downpours that begin to reshape daily plans. As autumn deepens into October and November, rain ceases to be an afternoon novelty and becomes the defining condition of the day. The afternoon air feels thick and heavy, hovering around twenty-nine degrees, making long treks through dense foliage deeply taxing.
Traveling by river between interior outposts becomes dramatically faster as water levels rise, but trekking through the undergrowth requires serious resolve and knee-high rubber boots. November brings the most unrelenting rainfall of the entire year, swelling tributaries and keeping wildlife tucked deep beneath the shelter of the upper canopy.
The paradox of Borneo is that December and January see the heaviest visitor traffic of the year, driven by holiday wanderlust, right into the teeth of the monsoon. January is the busiest month on the island, yet it is also sodden and dark, with the sun struggling to break through the cloud cover for more than a few hours a day. Wooden longboats run against churning brown currents, and jungle tracks dissolve into slick clay.
February brings a brief, dazzling respite in West Kalimantan when Pontianak celebrates the Cap Go Meh Festival. The streets burst into color with towering dragon dances and spirit mediums processing through torrential, humid heat to close the lunar new year. March remains fiercely wet and busy, requiring patience as flash floods and persistent tropical squalls dictate travel schedules.
April marks a messy, beautiful turning point. The rain remains intense, but the suffocating moisture slowly begins to yield to longer, brighter mornings. By May and June, the crowds thin out considerably, leaving river towns and forest reserves peaceful and quiet.
This early summer window also coincides with the Gawai Dayak Festival, when Indigenous Dayak communities across Kalimantan celebrate the harvest with communal feasts, hornbill dances, and traditional rituals. The forest is vibrant and newly fed by months of downpours, offering lush greenery without the crushing holiday foot traffic of the winter months.