  In this paper, we study the stochastic wave equations in the spatial
dimension 3 driven by a Gaussian noise which is white in time and correlated in
space. Our main concern is the sample path H\"older continuity of the solution
both in time variable and in space variables. The conditions are given either
in terms of the mean H\"older continuity of the covariance function or in terms
of its spectral measure. Some examples of the covariance functions are proved
to satisfy our conditions, which include the case of the work \cite{dalang4}.
In particular, we obtain the H\"older continuity results for the solution of
the stochastic wave equations driven by (space inhomogeneous) fractional
Brownian noises. For this particular noise, the optimality of the obtained
H\"older exponents is also discussed.
