Kota Kinabalu in May

March through August gives you the driest weather and calmest seas. This is prime diving season at Sipadan and Mabul islands. Hotel prices peak in July and August when school holidays bring Malaysian families to town. April and May hit the sweet spot — less rain than other months but not yet peak tourist season. You'll find better hotel deals and shorter queues at popular restaurants. The northeast monsoon hits from November to February. Don't let that scare you off completely — rain usually comes in afternoon downpours, not all-day soakers. Just pack a light rain jacket and plan indoor activities for backup. Mount Kinabalu climbing permits get booked months ahead during dry season. If you're serious about the summit, book by January for a June climb. The mountain creates its own weather anyway, so you might get lucky with clear skies even during shoulder months.