Inter-island transport in Kiribati operates through irregular shipping schedules and limited air connections that separate the three island groups—Gilbert, Phoenix, and Line Islands—by distances exceeding 3,000 kilometers. Air Kiribati holds a monopoly on domestic flights, flying Harbin Y-12 turboprop aircraft that seat 19 passengers on routes connecting South Tarawa to Kiritimati, Tabiteuea, Abemama, Maiana, Aranuka, Marakei, Butaritari, and Makin. The airline operates under a government subsidy structure because passenger volumes cannot support commercial viability on most routes. Flight frequency varies from three times weekly on the Tarawa-Kiritimati route to fortnightly service on smaller atolls. Seats sell out weeks in advance during school holidays and festive periods. Baggage allowances restrict passengers to 10 kilograms of checked luggage and 3 kilograms carried on board. Excess baggage costs 2 Australian dollars per kilogram when space permits, but cargo frequently bumps passengers entirely during copra harvesting season.
Shipping between islands relies on government vessels and private cargo boats that prioritize freight over passengers. The government operates two vessels serving the Gilbert group with published monthly schedules that change without notice based on weather, mechanical failures, and cargo demands. The journey from South Tarawa to Butaritari in the northern Gilbert Islands takes approximately 48 hours under favorable conditions but extends to five days when vessels stop at intermediate atolls. Passengers sleep on deck or in cramped below-deck spaces without air conditioning. Ships to Kiritimati and the Line Islands depart approximately monthly but cancel frequently. No regular shipping operates to the Phoenix Islands since the establishment of the Phoenix Islands Protected Area in 2008 eliminated permanent settlement except on Kanton, which receives government vessels three to four times yearly.
Ground transportation on South Tarawa consists of minibuses, taxis, and motorcycles operating along a single paved road connecting settlements from Betio through Bairiki to Bonriki. Minibuses charge fixed fares of 50 cents to 1 Australian dollar depending on distance and run from approximately 6 AM to 9 PM on irregular schedules determined by passenger demand. Drivers pack 15 to 20 people into vehicles designed for 12 passengers. No published timetables exist. Taxis operate on negotiated fares that start at 5 Australian dollars for short trips within individual settlements and reach 20 Australian dollars for the full Betio-to-Bonriki route. Motorcycle taxis charge roughly half these rates but carry higher accident risk on roads where speed limits lack enforcement.
Transportation on outer atolls depends primarily on walking, bicycles, and occasional motorcycles on the few atolls with paved causeways connecting islets. Kiritimati maintains approximately 150 kilometers of unpaved coral roads serviced by a small number of private vehicles and bicycles. Most atolls consist of separate islets connected only by boat, requiring visitors to negotiate transport with local boat owners on a case-by-case basis. Outboard motorboats charge 10 to 50 Australian dollars per trip depending on distance and fuel costs. Traditional sailing canoes still operate for inter-islet travel on some southern Gilbert atolls but increasingly give way to motorized craft.
Rental vehicles do not exist on most atolls. Kiritimati offers a limited number of rental cars through guesthouses at approximately 80 to 100 Australian dollars per day. South Tarawa rental options consist of a handful of operators charging 100 to 150 Australian dollars daily for vehicles ranging from small sedans to 4WD trucks. International driving permits paired with home country licenses grant legal operation authority. The poor condition of available vehicles and roads with potholes deep enough to damage axles make mechanical knowledge advisable. Fuel costs approximately 2.50 Australian dollars per liter on South Tarawa and increases 30 to 50 percent on outer islands when available.
Kiribati sits astride the equator, producing consistently high temperatures year-round with minimal seasonal variation in daylight hours. South Tarawa records average daily maximums between 28 and 32 degrees Celsius across all months, with overnight minimums rarely dropping below 25 degrees. Water temperature in the lagoons maintains 27 to 29 degrees throughout the year. The Gilbert Islands experience two somewhat distinct seasons: a wetter period from November through March when the Intertropical Convergence Zone shifts south, and a drier period from April through October influenced by trade winds. Monthly rainfall on South Tarawa averages 300 to 400 millimeters during wet months compared to 70 to 150 millimeters in the drier period, but daily rain showers occur year-round regardless of season. The Line Islands including Kiritimati sit north of the equator and experience inverted seasonal rainfall, receiving more precipitation from April through August.