September remains within the rainy season; expect intermittent heavy rain and higher seas. Some travelers prefer this period for lower prices, but plan flexibly for weather-related changes.
Lukas from Munich, Germany derivative work: Inkey CC BY-SA 4.0 Wikimedia Commons
Average daily low and high (°C) and monthly rainfall. The badge shows how it feels, allowing for humidity.
Average temperature across Palau in September.
Main Hub
September still carries the bulk of the wet-season weather with strong, humid days and recurring downpours; surf near exposed points can be rough and uninviting for casual swimmers. Many dive operators run reduced schedules or focus on protected sites inside the lagoon where visibility is better. Pack a good rain jacket, waterproof footwear for muddy shorelines, and plan more time for transfers-roads can be slow after heavy rainfall.
Interior & North
September’s frequent showers continue to swell rivers and trap humidity, making lengthy land travel tiring and occasionally unpredictable-check with hosts about road conditions before setting out. If your interest is wildlife or river photography, this is a productive time as water levels are high, but plan flexible schedules. Carry waterproof boots and keep electronics in dry cases as boat transfers may be substituted for impassable roads.
Diving, Kayaking & Snorkeling
September continues the wet pattern with frequent heavy showers that can cloud the water and reduce coral-viewing quality near runoff zones; photographers should expect softer light and moody skies. Protected bays still deliver rewarding snorkeling, though it pays to be pragmatic about plans and to check daily weather briefings. Bring solid rain protection and accept that some long boat trips may be postponed.
Southern Historic Islands
September’s continuing wet pattern keeps visitor numbers low and makes land-based trail walking more adventurous due to mud and dense vegetation. If you come for quiet reflection on the historical sites, this is a slow period-just plan for wet-weather conditions and less reliable transport. Waterproof bags and sturdy, closed-toe shoes are indispensable for safe exploration.
Kayangel, Ngarchelong
September still carries wet-season rhythms and rougher ocean conditions that make outer-cay exploration intermittent; early mornings may provide usable windows for short trips. If you’re intent on seeing remote sandbars, book flexible, local-guided charters that can adapt to changing sea states. Waterproof cases for cameras and spares for basic first-aid are useful on these isolated outings.
There are no major festivals or events in Palau during September to be aware of.
See how September compares with the rest of the year, then read the full guide.