Sembakung Atulai District is included in the figure for Sembakung District, from which it was split. (d) the 2010 populations of Tulin Onsoi District and Sei Menggaris District are included in the figure for Sebuku District, from which they were split. (e) Nunukan District comprises the western half of Nunukan Island (including the town of Nunukan), together with adjacent areas on the 'mainland' of Kalimantan. (f) Nunukan Selatan District comprises the eastern half of Nunukan Island. (g) Sebatik District comprises a southeast portion of Sebatik Island, while Sebatik Barat District comprises a southwest portion (the northern half of this island is part of Malaysian North Borneo, as the international boundary divides this island in two). (h) Since 2010, three additional districts have been created on (the Indonesian portion of) Sebatik Island - Sebatik Timur, Sebatik Tengah and Sebatik Utara - by the division of existing districts. The popululations in these districts in 2010 are included with the figures for Sebatik Barat District and Sebatik District. Climate Nunukan town, the seat of the regency has a tropical rainforest climate (Af) with moderate rainfall in January and February and heavy rainfall in the remaining months. References Regencies of North Kalimantan