▁of ▁Japan . ▁ ▁, ▁the ▁city ▁had ▁an ▁estimated ▁population ▁of ▁ 6 1 , 6 4 7 ▁in ▁ 2 6 , 5 5 9 ▁households , ▁and ▁a ▁population ▁density ▁of ▁ 2 , 4 5 7 ▁persons ▁per ▁km ². ▁The ▁total ▁area ▁of ▁the ▁city ▁is ▁. ▁ ▁Geography ▁Ts ush ima ▁is ▁located ▁in ▁far ▁western ▁A ichi ▁Pref ect ure , ▁on ▁the ▁all uv ial ▁plain ▁of ▁the ▁K iso ▁Three ▁R ivers . ▁ ▁S urr ounding ▁municipal ities ▁A ichi ▁Pref ect ure ▁A is ai ▁K anie ▁Ama ▁ ▁Dem ograph ics ▁Per ▁Japanese ▁census ▁data , ▁the ▁population ▁of ▁Ts ush ima ▁has ▁been ▁relatively ▁steady ▁over ▁the ▁past ▁ 3 0 ▁years . ▁ ▁Cl imate ▁The ▁city ▁has ▁a ▁climate ▁character ized ▁by ▁hot ▁and ▁hum id ▁sum mers , ▁and ▁relatively ▁m ild ▁winter s ▁( K ö ppen ▁climate ▁classification ▁C fa ). ▁ ▁The ▁average ▁annual ▁temperature ▁in ▁Ts ush ima ▁is ▁ 1 5 . 6   ° C . ▁The ▁average ▁annual ▁ra inf all ▁is ▁ 1 7 1 0   mm ▁with ▁September ▁as ▁the ▁wet test ▁month . ▁The ▁temper atures ▁are ▁highest ▁on ▁average ▁in ▁August , ▁at ▁around ▁ 2 7 . 9   ° C ▁with ▁occas ional ▁ty ph o ons ▁, ▁and ▁lowest ▁in ▁January , ▁at ▁around ▁ 4 . 4   ° C ▁with ▁occas ional ▁snow . The ▁East ▁Asian ▁ra iny ▁season