Contend with cold at seaside (8)
I believe the answer is:
confront
'contend with' is the definition.
(thesaurus)
'cold at seaside' is the wordplay.
'cold' becomes 'c' (eg on taps).
'at' becomes 'on' (location).
'seaside' becomes 'front' (the seafront).
'c'+'on'+'front'='CONFRONT'
(Other definitions for confront that I've seen before include "Face in opposition" , "Challenge" , "Meet face to face with" , "Accost, come face to face with" , "Oppose head-on" .)