Palau has no public transportation system. Movement between islands and locations requires rental cars, taxis, or boat charters. Roman Tmetuchl International Airport sits on Babeldaob, connected to Koror by the Japan-Palau Friendship Bridge, completed in 2002 after the previous bridge collapsed in 1996. The bridge spans 413 meters. Most accommodations and services concentrate in Koror, though the capital Ngerulmud lies 20 kilometers northeast on Babeldaob. Palau Pacific Airways operates domestic flights to Peleliu and Angaur, though schedules vary with demand and aircraft availability.
Rental cars operate on the right side of paved roads connecting Koror to Ngerulmud and extending along Babeldaob's circumference. International driving permits are accepted alongside valid home-country licenses. No rental agencies provide vehicles on islands other than Babeldaob and Koror. Speed limits reach 40 kilometers per hour in most areas. Roads on Babeldaob received funding through the Compact Road project, completed in phases between 2001 and 2013 with United States appropriations. Taxis charge rates without meters, typically ranging from 10 to 30 US dollars for trips within Koror. No rideshare applications operate in Palau.
Access to the Rock Islands Southern Lagoon and dive sites requires boat charter. Most dive operations and tour companies base from Malakal Island's commercial harbor. Full-day Rock Islands tours cost 150 to 250 US dollars per person, including the mandatory Rock Islands Permit fee of 50 US dollars valid for ten days, plus Jellyfish Lake entry at 100 US dollars. Tour operators bundle transportation, guide services, and lunch into package rates. Private boat charters command 500 to 1,200 US dollars daily depending on vessel size and range. Weather conditions particularly between July and October can cancel scheduled trips without refund guarantees.
Kayak rentals provide independent access to lagoons and channels near Koror at 25 to 50 US dollars per day. Paddling to most Rock Islands destinations from Koror requires hours of open-water travel beyond recreational kayaking range. Tour operators prohibit solo visits to Jellyfish Lake and most protected marine areas within the UNESCO World Heritage Site boundaries established in 2012. The Ngerukewid Islands Wildlife Preserve remains closed to all visitors. Walking trails exist at Ngardmau Waterfall and Badrulchau Stone Monoliths on Babeldaob, reached only by rental car as no transport services run scheduled stops.
Bicycle rentals operate sporadically in Koror with no established pricing structure. Palau's tropical heat and absence of dedicated cycling infrastructure limit practical bicycle range. Motorcycles and scooters are not available for tourist rental. Inter-island cargo vessels occasionally accept passengers to Peleliu, Angaur, and Kayangel, but schedules depend on freight demand and provide no amenities. These trips can take four to eight hours depending on sea conditions and intermediate stops. No ferries run fixed passenger routes. Swimming between islands is prohibited and dangerous due to strong currents and saltwater crocodile populations documented throughout Palauan waters.
Palau sits seven degrees north of the equator, experiencing year-round temperatures between 24 and 31 degrees Celsius. Rainfall occurs in all months, with annual precipitation averaging 3,800 millimeters. No distinct dry season exists. February through April receive somewhat less rain than other months, averaging 250 to 300 millimeters monthly compared to 350 to 450 millimeters from July through October. Typhoons track north of Palau during the Western Pacific typhoon season from June through December, occasionally bringing increased rainfall and wind without direct strikes. The last typhoon to directly impact Palau was Typhoon Haiyan in November 2013, which passed south of the main islands.
Water visibility for diving and snorkeling reaches optimal conditions from November through May when plankton blooms diminish. Visibility during these months ranges from 25 to 40 meters at sites including Blue Corner and German Channel. Between June and October, plankton increases reduce visibility to 15 to 25 meters while simultaneously attracting manta rays to cleaning stations. Blue Corner sees strongest currents from December through March, creating drift dive conditions that require advanced certification but concentrate pelagic fish. Water temperature remains 27 to 29 degrees Celsius throughout the year, requiring only 3-millimeter wetsuits for thermal protection.
Jellyfish Lake closed to visitors in 2016 after golden jellyfish populations collapsed due to El Niño warming and drought conditions. The lake reopened in January 2019 after jellyfish numbers recovered to observable levels. Population fluctuations continue, with counts varying between 200,000 and 5 million individuals depending on seasonal rainfall and salinity levels. Tour operators confirm current jellyfish presence before trips, but no minimum population guarantees exist. The lake has naturally closed and reopened to jellyfish multiple times in documented history, most recently for complete closure from 1999 to 2000.