▁located ▁in ▁south - central ▁G if u ▁Pref ect ure . ▁The ▁city ▁is ▁border ed ▁by ▁Se ki ▁to ▁the ▁west ▁and ▁Min ok amo ▁to ▁the ▁east . ▁Mount ▁Nash iw ari ▁is ▁within ▁the ▁town ' s ▁boundaries . ▁The ▁K awa ura ▁ ▁and ▁T sub o ▁R ivers ▁flow ▁through ▁the ▁town . ▁The ▁town ▁has ▁a ▁climate ▁character ized ▁by ▁character ized ▁by ▁hot ▁and ▁hum id ▁sum mers , ▁and ▁m ild ▁winter s ▁ ▁( K ö ppen ▁climate ▁classification ▁C fa ). ▁ ▁The ▁average ▁annual ▁temperature ▁in ▁Tom ika ▁is ▁ 1 5 . 1   ° C . ▁The ▁average ▁annual ▁ra inf all ▁is ▁ 2 0 7 4   mm ▁with ▁September ▁as ▁the ▁wet test ▁month . ▁The ▁temper atures ▁are ▁highest ▁on ▁average ▁in ▁August , ▁at ▁around ▁ 2 7 . 8   ° C , ▁and ▁lowest ▁in ▁January , ▁at ▁around ▁ 3 . 3   ° C . ▁ ▁Ne igh bour ing ▁municipal ities ▁G if u ▁Pref ect ure ▁Se ki ▁Min ok amo ▁ ▁Dem ograph ics ▁Per ▁Japanese ▁census ▁data , ▁the ▁population ▁of ▁Tom ika ▁has ▁increased ▁slightly ▁over ▁the ▁past ▁ 4 0 ▁years . ▁ ▁History ▁The ▁area ▁around ▁Tom ika ▁was ▁part ▁of ▁traditional ▁M ino ▁Province . ▁ ▁During ▁the ▁E do ▁period , ▁the ▁area ▁was ▁ten ry ō ▁territory ▁controlled ▁directly ▁by ▁the ▁Tok ug awa ▁sh og un ate . ▁With