le ▁Bay ▁( or ▁B ide ford ▁Bay ) ▁in ▁the ▁Br istol ▁Channel . ▁On ▁the ▁north ▁side ▁of ▁the ▁town , ▁the ▁River ▁T aw ▁is ▁joined ▁by ▁the ▁River ▁Ye o , ▁which ▁r ises ▁on ▁Ber ry ▁Down , ▁near ▁Com be ▁Martin . ▁ ▁The ▁greater ▁part ▁of ▁the ▁town ▁lies ▁on ▁the ▁eastern ▁bank ▁of ▁the ▁est u ary , ▁connected ▁to ▁the ▁western ▁side ▁by ▁the ▁ancient ▁Bar n st ap le ▁Long ▁Bridge ▁which ▁has ▁ 1 6 ▁arch es . ▁The ▁early ▁medieval ▁layout ▁of ▁the ▁town ▁is ▁still ▁apparent ▁from ▁the ▁street ▁plan ▁and ▁street ▁names , ▁with ▁B out port ▁Street ▁(" About ▁the ▁Port ") ▁following ▁the ▁cur ved ▁line ▁of ▁the ▁d itch ▁outside ▁the ▁town ▁walls . ▁The ▁area ▁of ▁medieval ▁ship building ▁and ▁repair ▁is ▁still ▁called ▁The ▁Str and , ▁the ▁Old ▁English ▁word ▁for ▁shore . ▁ ▁Cl imate ▁Bar n st ap le ▁has ▁cool , ▁wet ▁winter s ▁and ▁m ild , ▁wet ▁sum mers . ▁Tem per atures ▁range ▁from ▁ 9 ▁C ▁( 4 8 ▁F ) ▁in ▁January ▁to ▁ 2 1 ▁C ▁( 7 0 ▁F ) ▁in ▁July . ▁October ▁is ▁the ▁wet test ▁month ▁with ▁ 1 0 3   mm ▁( 4 . 1   in ) ▁of ▁rain . ▁The ▁record ▁high ▁is ▁ 3 4 ▁C ▁( 9 4 ▁F ), ▁and ▁the ▁record ▁low ▁is ▁− 9 ▁C ▁( 1 6 ▁F ). ▁Bar