Nope. Unless all your manpages are in there.
More like
/usr/local/man:/usr/man:/usr/X11R6/man:/usr/lib/java/man:/usr/lib/qt-3.2.1/doc/man:
/usr/share/texmf/man:/usr/local/share/man:/usr/local/share/man
or so.
Something got screwed up in /etc/profile, ~/.bash_profile, ~/.bashrc, or something.
Fix that or add
export MANPATH="$MANPATH:/usr/local/share/man"
with whatever path you'd like, to ~/.bash_profile or wherever you'd like.